U.S. PATENT AND TRADEMARK OFFICE
Information Products Division |
U.S. Patent Classification System - Classification Definitions
as of June 30, 2000
Patents classified in a subclass may be accessed by either clicking on
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(definitions have been obtained from the
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Class 277
SEAL FOR A JOINT OR JUNCTURE
Class Definition:
This is the generic class for a sealing means or a process of
using a seal to act at a joint or juncture of adjacent parts
to oppose passage of a fluid. The sealing means or process:
(1) closes a space formed between or (2) deflects the fluid
away from the joint or juncture by using the fluid, another
fluid, or an article.
(1) Note. For a seal that does not claim a static or dynamic
use, it is permissible to use its disclosure for placement.
LINES WITH OTHER CLASSES AND WITHIN THIS CLASS
In Class 520, Synthetic Resins or Natural Rubbers, subclasses
1+ are the generic subclasses for a synthetic resin or
natural rubber preparation, and composition containing or
treatment thereof is to be considered an integral part of
Class 260 retaining all pertinent definitions and class
lines, and having Classes 521, 522, 523, 524, 525, 526, 527,
and 528 indented thereunder.
REFERENCES TO OTHER CLASSES
SEE OR SEARCH CLASS:
29, Metal Working, for a method of mechanical manufacture,
subclass 402.02 for a method of repairing a seal or element
thereof not provided for elsewhere, subclasses 888.07+ for a
method of piston ring or packing manufacture, or subclass
888.3 for a method of seal or packing manufacture; or for
apparatus to assemble or disassemble, subclasses 700+ for
general apparatus to assemble or disassemble, especially
subclasses 222+ for an apparatus to insert or remove a piston
ring, or subclass 236 for an apparatus to apply or remove a
resilient well protector from a well sucker rod.
34, Drying and Gas or Vapor Contact With Solids, for
apparatus to separate liquids from solids (i.e., drying) or
contacting solids with gases or vapors, subclass 242 for
means to seal an opening in a treating chamber against gas or
vapor leakage, or subclass 601 that may have a seal between a
rotating drum or receptacle, and a housing.
49, Movable or Removable Closures, for more than nominal
movable or removable closure structure (e.g., door jam,
etc.), subclass 475.1 for a seal acting at a juncture of the
closure and an adjacent member, especially subclass 477.1
having an inflatable or fluid pressure responsive feature;
subclass 478.1 having a magnetic feature, subclass 482.1
having a segmenting, replacing, adjusting, or severing
feature; subclass 483.1 having complementary engaging
portions on closure or closure and portal frame; subclass
489.1 anchored in channel or slot in closure or portal frame;
subclass 490.1 having a U-shaped member or portion to mount
the seal, or subclass 498.1 is tubular or has a tubular
portion.
52, Static Structures (e.g., Buildings), for a site erected
structure or related components (e.g., panels, beams,
columns, etc.), subclasses 140+ for a burial vault having a
separately placeable closure in abutting relation to wall
edges and sealing material retaining construction, subclasses
393+ for a relatively yieldable preformed separator (i.e.,
expansion joint), or subclasses 408+ for a disparate sheet
lamina between exposed surfaces of wall, floor, or roof
(e.g., vapor barrier, waterproofing membrane, etc.).
57, Textiles: Spinning, Twisting, and Twining, for a process
or apparatus for spinning, twisting, and twining.
73, Measuring and Testing, for a detailed structure or method
for measuring or testing, subclasses 7+ for a measurement
or test made involving anyone or any combination of
operations of abrasion, milling, rubbing or scuffing;
subclasses 46+ for testing or determining leakage between
parts mechanically fitted together and capable of being
separated without destruction; subclasses 700+ for direct
measurement of fluid pressure; subclasses 863+ for obtaining
a predetermined portion of a mass of material to be tested,
or subclass 865.8 for apparatus or process for sensing and
signaling, or for indicating a physical condition.
74, Machine Element or Mechanism, subclasses 18+ for a
flexible sealing material attached to a casing and a moving
rod, and a device or mechanism to move the rod.
87, Textiles: Braiding, Netting, or Lace Making, a process or
apparatus for forming strands or fabrics from yarns,
filaments or strands, by braiding, knotting, or intertwisting
the strands, and the corresponding products or fabrics.
92, Expansible Chamber Devices, subclass 168 for a
nonmetallic seal means between a piston or a part moved by
the piston and a cylinder end portion; or subclasses 172+ for
more than nominal detailed structure of a piston except where
limited to detailed structure (e.g., seat, fluid passageway
in seat, etc.) solely intended to cooperate with a piston
ring or piston ring expander.
100, Presses, subclass 269.21 for a seal or gasket around a
piston for a fluid activated reciprocating press.
114, Ships, for marine vehicles and accessories not otherwise
classifiable, subclass 93 that may have a seal for a joint
between a mast and a deck.
116, Signals and Indicators, for a specifically recited and
detailed mechanical device for giving signals of the nature
of an alarm or indicator that appeals to any one or more of
the senses and combined with nominal apparatus structure from
other classes, subclass 70 for a fluid-pressure variation
alarm giving audible indication usually operated
automatically; subclasses 101+ for a thermal alarm giving
audible indication usually operated automatically; subclasses
109+ for a liquid level alarm giving audible indication
usually operated automatically; subclass 112 for a fluid flow
alarm giving audible indication usually operated
automatically; subclass 208 for a wear indicator for an
element having means to convey information to one of the
senses; subclasses 216+ for a temperature responsive or
compensating means indicator having means to convey
information to one of the senses; subclasses 227+ for a
liquid level indicator having means to convey information to
one of the senses, or subclasses 266+ for a pressure
indicator having means to convey information to one of the
senses.
123, Internal-Combustion Engines, subclass 90.37 for a
poppet valve mechanism's lubrication system's seal or shield
that includes those mounted on a valve stem or subclass 188.6
for a seal in combination with a valve stem of an intake,
exhaust or fuel valve of an internal combustion engine having
a stationary opening (i.e., seat) and moving closure (i.e.,
head).
137, Fluid Handling, residual class for fluid material
handling process or apparatus; subclasses 248+ for a
liquid seal between relatively movable valving parts.
139, Textiles: Weaving, for manufacture of fabric by weaving
threads.
148, Metal Treatment, subclass 238 for a process of
nitriding using an externally supplied nitrogen source or
subclasses 317+ for a stock product of the nitriding
process.
156, Adhesive Bonding and Miscellaneous Chemical Manufacture,
subclasses 60+ for a process of manufacturing an article
involving surface bonding or assembly therefor or subclasses
349+ for an apparatus to manufacture an article involving
surface bonding or assembly therefor.
165, Heat Exchange, subclasses 47+ for a heat exchanger
including structural installation on apparatus external to
the subject matter of this class.
166, Wells, for well apparatus having a seal where the well
apparatus has a distinct feature (e.g.; above ground
apparatus preventing upward or downward movement of an inner
pipe, rod, or cable part depending into a well casing or
tubing; above ground apparatus sealing the annular space
between a broadly recited casing supported enclosure and an
inner member; lateral port or valve on the tubular member
above or below the packing; structural detail of the tubular
member not contributing to the sealing function; etc.) other
than sealing, subclass 82.1 for above ground apparatus
having a releasable sealing or cleaning means for an inner
part extending into the well; subclasses 84.1+ for above
ground apparatus with a seal for a reciprocating part (e.g.,
sucker rod, etc.); subclasses 86.1+ for above ground
apparatus having a valve combined with anchoring or sealing
means between a casing and an inner part; subclasses 88.1+
for above ground apparatus having a lateral port combined
with anchoring or sealing means between a casing and an inner
part, or subclasses 179+ for a packer or plug insertable from
the top of a well into a well conduit to seal between a
longitudinally extending tubular part and the well conduit,
especially subclass 87 for a seal expanded by confined fluid
from central chamber, pump or plunger and subclass 202 for a
cup type seal.
174, Electricity: Conductors and Insulators, for an
insulator and specialized apparatus to mount, support,
encase, box, or house an electrical component, subclass 23
for means using or adapted to use a fluid or vacuum including
a seal, subclass 35 for an electromagnetic shield or
anti-inductive device that may be a gasket, subclass 65 for a
box or housing structurally limited to electrical use or
including an electrical device, that may include a seal
between a cable and the box or housing, or subclasses 152+
for a grommet to insulate a conductor as it extends through a
wall or plate.
175, Boring or Penetrating the Earth, for processes and means
for initially forming or radially enlarging an elongated hole
in the earth in situ, subclasses 209+ for above ground
means engaging bore entrance directing or receiving fluid or
cuttings, subclass 214, for a seal located in a fluid head on
a tool shaft, subclass 359 for mutually contacting cutter
supports that are circumferentially displaced axes for a
rolling cutter bit or rolling cutter bit element with seal
details, or subclasses 371+ for a rolling cutter bit or
rolling cutter bit element with seal details.
184, Lubrication, for a unitized lubrication means removable
or installable from one machine to on another and intended to
lubricate a bearing part in a machine, subclasses 24+ for a
piston rod lubricator or subclasses 104.1+ for a lubricator
including a heating or cooling device.
188, Brakes, for means of retarding motion of or stopping of
machines; subclass 72.4 for a fluid pressure piston axially
actuating a brake element or housing against a wheel that may
include a seal, subclasses 73.44+ for an axially extending
pin to retain an actuator axially slidable in a plane
parallel to an axis of a rotating wheel that usually includes
a seal, subclass 322.17 for an internal resistance motion
retarder including a thrust component used to vary volume in
a fluid-filled chamber having a particular retarder component
structure with a dynamic sealing ring or flexible boot
between a piston rod and cylinder, or subclass 322.18 for an
internal resistance motion retarder including a thrust
component used to vary volume in a fluid filled chamber
having a particular retarder component structure with a
dynamic sealing ring between a piston and cylinder.
205, Electrolysis: Processes, Compositions Used Therein, and
Methods of Preparing the Compositions; for a process of
making an electrolytic coating not provided for elsewhere,
subclasses 178+ for multiple superposed coatings having at
least one chromium-containing coating, or subclasses 283+ for
a predominately chromium coating.
210, Liquid Purification or Separation, subclass 450 for a
filter in a flow line or a flow line connected closed casing
having a gasket between the filter and walls of the casing
(e.g., oil filter gasket, etc.).
215, Bottles and Jars, for a cap-type bottle or jar closure,
subclass 45 for neck structure to receive a particular
closure including a seal, subclass 233 for a hardenable
liquid or plastic seal where the closure seats on the bottle
or jar; subclass 234 for a liquid seal located where the
closure seats on the bottle or jar; or subclasses 341+ for a
cap-type closure having an identifiable integral or separate
seal or liner.
220, Receptacles, for a receptacle having an access opening
and a removable closure for the opening and means to seal the
juncture therebetween, subclass 228 for a liquid or
semi-liquid gasket or subclass 378 for a gasket or packing.
222, Dispensing, subclass 542 for a seal provided for a
joint, closure, or flow controller of a dispenser.
228, Metal Fusion Bonding; in general, for apparatus or
method of joining the meeting faces of juxtaposed or engaged
metal articles, of the same article originally in a form
sustaining state, or a metal article to a nonmetal article,
by direct application of heat or mechanical energy to the
articles causing a flowing or blending of the meeting faces
or causing a filler to flow or blend where the meeting faces
to form a continuous interconnecting zone.
241, Solid Material Comminution or Disintegration, subclass
216 for cooperating comminuting surfaces having a gyratory
member that includes rotary motion and means to seal the
comminuting zone from a drive or other moving parts.
251, Valves and Valve Actuation, for means to close or
restrict a flow of fluid through a passage by a definite
predetermined motion of the means combined with a seal,
subclass 1.1 for a plurality of relatively movable sealing
members that control an annular passage between a well casing
and a drill stem, axial rod or pipe; subclasses 171 for a
gland member pressing a seal constituting a valve seat
against a valve head; subclass 189 for separate actuators or
different functions of the same actuator to increase contact
pressure between piston type valves provided with expansible
sealing and a seat; subclass 191 for means to increase the
contact pressure between a piston-type valve having a seal
that expands upon closing and a seat; subclass 214 for a
valve actuated by a mechanical movement means and having a
particularly associated sealing means for either; subclass
257 for a valve actuated by a cam encased in a valve body
having a seal; subclasses 306+ for a rotary butterfly valve
having a seal carried by the valve or a valve seat;
subclasses 314+ for a rotary valve and a seat therefor or a
seal between the rotary valve and the seat; subclass 318 for
a reciprocating valve having a seal made of nonresilient
material on a reciprocating head element or seat made of a
resilient material; subclasses 335.1+ for a flexible wall
seal between an actuator and valve; or subclass 363 for a
removable valve seat having a seal between the valve seat and
its supporting structure.
252, Compositions; subclass 62.51 for a composition useful
for a magnetic purpose or a process for making the
composition; subclass 72 for a composition that contains an
agent for stopping or reducing a leak in a container; or
subclass 378 for a process of intumescing vermiculite, other
micaceous substances or other materials, or a product of such
a process, not provided for elsewhere.
264, Plastic and Nonmetallic Article Shaping or Treating:
Processes, subclasses 239+ for mechanical shaping or
molding to form or reform a shaped article, especially
subclasses 259+ for a composite article created by shaping or
forming molding material against and uniting to a preform.
285, Pipe Joints or Couplings, for means to secure in
end-to-end or side-to-side relationship a pipe to another
pipe, a plate, a wall, a receptacle, or other base where the
means are independent from a seal (i.e., more than the
frictional engagement of the seal secures a pipe end to
another part) or a sleeve securing the pipe ends or another
part; subclasses 95+ for a seal responsive to line
pressure or means to test the seal by using line pressure,
especially subclass 97 for a seal having an inflatable member
having an external pressure supply; subclass 187 for
temperature responsive means to maintain a good seal for
expansion or contraction in the pipe coupling; or subclasses
335+ for a seal combined with the pipe joint or coupling.
296, Land Vehicles: Bodies and Tops, for a body secured to
the running gear and a top therefor, subclass 93 for
weatherstripping to seal between panels or between a
windshield and the body or top.
301, Land Vehicles: Wheels and Axles, for a wheel or axle,
or where they are a dominant feature when combined with other
vehicle structure; subclass 123 for a seal to exclude dirt
or dust from a wheel or axle bearing.
305, Wheel Substitutes for Land Vehicles, subclasses 100+
for a flexible track joint structure (e.g., pin, link, etc.)
including a seal, deflector, or scraper; or subclass 118 for
a passageway in a connector pin to provide lubrication.
335, Electricity: Magnetically Operated Switches, Magnets,
and Electromagnets; subclasses 209+ for a magnet or an
electromagnet, configured or arranged to perform external
mechanical work but does not include the external mechanical
work.
366, Agitating, subclass 183.4 for a closed connection
(e.g., sealed joint, etc.) between a static conveyor with
gravity discharge and a rotating mixing chamber.
374, Thermal Measuring and Testing, subclasses 141+ for
temperature sensing in combination with only a nominally
recited diverse art device.
376, Induced Nuclear Reactions: Processes, Systems, and
Elements, subclasses 203+ for a seal at a joint or juncture
between and combined with fluid confining structures (e.g., a
nozzle, a vessel cover, etc.) of a nuclear reactor pressure
vessel.
384, Bearings, for more than nominal bearing structure or
detail (e.g., liner, bearing race, cage, etc.) combined with
a specific seal, subclasses 130+ for a plain radial bearing
having a specific seal, especially the following subclasses:
subclass 131 where fluid moves the seal; subclasses 132+
where the seal is a barrier of liquid or gas; subclasses 135+
where centrifugal force moves or holds the seal in place;
subclass 137 where the seal has means to remove excess
lubricant from the shaft and return it to a lubricant
reservoir or for removing material from the shaft about to
enter the bearing from the outside; subclasses 139+ where the
seal consists of a relatively rotatable radially extending
sealing face member (e.g., face, mechanical, etc.); subclass
144 where the seal is a labyrinth seal; subclasses 145+ where
the seal conforms to a bearing surface that has a shape of
sphere to permit angular or lateral movement; subclasses 147+
where the seal is a peripheral radially sealing flexible
projection extending axially of a center of a seal seat to
contact the relatively moving element to be sealed; subclass
149, where the seal is radially contained with an axially
acting follower; subclass 150 where mechanical means (e.g.,
nut, separate resilient elements, etc.) moves the seal; or
subclasses 151+ where the seal's material is resilient and on
the outer area of the bearing or shaft; subclass 159 for a
railway car journal bearing having a detailed seal;
subclasses 477+ for a radial antifriction bearing having a
specific seal, especially subclass 478 where centrifugal
force loads the seal or a liquid or gas forms a sealing
barrier; subclass 479 where the seal establishes a pressure
or pressure responsive means loads the seal; subclass 480
where the seal is a labyrinth seal; subclasses 481+ where the
seal is a relatively rotatable radially extending sealing
face member (e.g., face, mechanical, etc.); subclass 483
where the seal is a radially contained seal with an axially
acting follower; subclasses 484+ where the seal is a
peripheral radially sealing flexible projection contacting a
relatively rotating surface parallel to the axis of rotation;
subclass 488 where the seal is a radially extending, annular
flange approaching but not contacting a relatively rotating
member to substantially but not completely close an annular
opening; subclass 489 where the seal is a resilient O-ring
seal; or subclass 607 for a thrust bearing having a seal.
403, Joints and Connections, for a joint or connection
structure that goes beyond providing an environment for a
seal; subclasses 50+ for a flexible diaphragm or bellows
secured to each part; subclass 134 for a ball and socket
having an external seal (i.e., remote from the bearing
surface); subclasses 135+ for a ball and socket that may have
a seal at the bearing interface; or subclass 288 for a seal
distinct from the joint and unnecessary to the connection of
parts.
405, Hydraulic and Earth Engineering, subclass 152 for
method or apparatus to form an underground passageway (e.g.,
tunnel, etc.) lined by panels having a seal between adjacent
panels.
411, Expanded, Threaded, Driven, Headed, Tool-deformed, or
Locked-threaded Fastener, for a fastener suited for general
use, subclasses 369+ for a headed threaded fastening means
and nut having a washer and seal, or subclass 542 for a
washer configured for a fastener having a seal.
413, Sheet Metal Container Making, for a process or apparatus
for performing an attendant operation before final assembly
of a lid to a receptacle, subclass 7 for a process of
applying a sealant to an end joint between the lid and the
receptacle; subclass 9 for a process of joining a preformed
gasket or liner to the lid; subclasses 12+ for a process of
fabricating a frangible end closure or assembling a frangible
part to an end closure; subclasses 19+ for a process of
applying liquid to form a gasket or liner on the lid;
subclass 34 for apparatus to seam together the receptacle and
lid using a roller die including means to apply a gasket or
seal therebetween; subclasses 58+ for apparatus to form lid
having means to apply seal or liner, or subclasses 67+ for
apparatus to form lid having means to form frangible zone in
lid.
415, Rotary Kinetic Fluid Motors or Pumps, for a means of
guiding or confining (e.g., casing, distributing means, etc.)
a working fluid (i.e., a liquid or gas that contacts or
supports a rotary means that drives or is driven by the
liquid or gas), subclass 109 for a rotating shaft having an
abutment surface imparting motion in a sealing fluid inside a
chamber; subclasses 110+ this may include a seal to separate
a fluid path to an interior part of an assembly between
relatively movable parts and the working fluid path;
subclasses 170.1+ this may include a seal between the rotary
means (e.g., runner, etc.) and a static part, or subclass 230
for a seal between a shaft or shaft sleeve, and a static
part.
417, Pumps, for a general means to move a fluid from one
place to another having an inlet and an outlet, subclass
423.11 for a rotary electric motor and rotary non expansible
chamber pump having sealing means therebetween.
418, Rotary Expansible Chamber Devices, subclass 55.4 for a
helical working member (e.g., scroll, etc.) having planetary
or planetating movement including a seal or subclasses 104+
for a working member having relative rotation to a surface of
a working chamber to expand and contract the volume of the
working chamber with a movable, expansible, adjustable, or
deformable seal.
420, Alloys or Metallic Compositions, for a generic class for
alloys containing metal or metallic compositions that contain
a continuous phase of metal, methods of making it not
provided for elsewhere or "elemental" metal, per se.
425, Plastic Article Shaping or Earthenware Shaping or
Treating: Apparatus; a generic class for apparatus not
provided for elsewhere to mold a plastic, shape molten
materials where no molding surface is employed, treating a
product made by the apparatus of this class, randomly deposit
and bond particulate material, or a combination of apparatus
of this class with any diverse working or treating apparatus,
Digest 47 for a seal ring.
428, Stock Material or Miscellaneous Articles, a residual
class for a structurally defined stock material,
nonstructural laminate, an article of manufacture or
intermediate article of manufacture, not provided for
elsewhere; subclasses 131+ for a structurally defined web
or sheet (e.g., an overall dimension, etc.) including an
aperture; subclasses 320.2+ comprising a single or plural web
or sheet that contains components where at least one contains
a liquid or has a constituent trapped inside preformed walls;
subclasses 357+ containing or consisting of a strand, fiber,
grain, cell, particle, or any substance in terms of a
particular size or shape, a plurality or such arranged
relative to one another, a particular interengagement of a
plurality of such or a coating associated therewith;
subclasses 367+ containing carbon as an element or compound,
and consisting of or coating a rod, strand, filament or
fiber; subclass 406 containing or consisting of particulate
matter comprising glass having a particular size or shape and
a coating; subclasses 411.1+ for a composition of layers
adhered or cohered to each other; subclass 426 for layers
adhered or cohered to each other where a layer contains glass
that may be in fiber or mat form; subclasses 544+ for
metallic; subclasses 615+ comprising different contiguous
layers or portions, each having a matrix or continuous phase
of free metal; or subclasses 616+ comprising different
contiguous layers or portions, each having a matrix or
continuous phase of free metal having the property of bending
or lengthening in a circular fashion in response to an
increase in temperature.
445, Electric Lamp or Space Discharge Component or Device
Manufacturing, subclass 25 for a process of display or gas
panel making including a seal not elsewhere classified.
432, Heating, subclass 115 for a rotary drum mounted for
rotation about a horizontal or slightly inclined axis, the
rotation of the rotary drum imparting a tumbling motion to
material placed therein, forming a juncture against a
stationary part with a flexible seal, cooler seal, or an air
curtain-type flow controller therebetween to prevent escape
of the rotary drum's atmosphere or subclass 244 for a heating
device specialized to feed or discharge a work chamber
including a seal at the chamber's wall for conveyor arm or
shaft.
433, Dentistry, subclass 115 for a seal in a motorized
handheld tool or handpiece.
439, Electrical Connectors, for a generic electrical
connection between at least two conducting elements
permitting relative motion or where the connection is a
readily made or broken type, subclass 89 for a seal to a
connector having inductive shielding or arc suppressing means
including an elastomeric or nonmetallic conductive portion;
subclasses 271+ for a sealing element or material for
cooperation with the coupled connector (e.g., gasket, etc.);
subclass 559 for a seal to a coupling part that extends into
a panel opening; or subclass 927 for a conductive gasket.
440, Marine Propulsion, for a vessel and a device (e.g.,
propeller, impeller, etc.) other than a sail to move the
vessel through water, subclass 112 for means to mount an
engine within the vessel's hull and sealing means for a
propeller shaft that pierces the hull.
451, Abrading, subclasses 28+ for a process of performing
an abrading operation (i.e., where the sharp edges of mineral
crystals form the cutting instrument) and a process of
performing an ancillary operation not provided for
elsewhere.
464, Rotary Shafts, Gudgeons, Housings, and Flexible
Couplings for Rotary Shafts, subclass 131 for a drive
coupling that accommodates misaligned or angularly related
axes through a radially directed pin having a particular
bearing cup surrounding the pin end and a flexible seal,
subclass 133 for a drive coupling that accommodates
misaligned or angularly related axes through a radially
directed pin and a flexible seal or subclasses 173+ for a
flexible boot for a joint to transmit rotary torque.
494, Imperforate Bowl: Centrifugal Separators, for an
apparatus or process that breaks down or subdivides a mixture
of fluent material into components by using a receptaclelike
part having a wall to subject the material to centrifugal
force, subclasses 38+ including a seal.
501, Compositions: Ceramic, subclasses 1+ for inorganic
compositions other than Portland cement or cementitious
material prepared from gypsum that are heat-treated by
firing, calcining, sintering, or fusion of a part of the
inorganic material during manufacturing or subsequent use to
effect hardening or fusion followed by hardening when cooled
and processes not provided for elsewhere, and especially
subclasses 11+ for a glass composition or a composition
intended to be heat-treated to form a glass.
505, Superconductor Technology: Apparatus, Material,
Process, subclass 165 for a high temperature (tc greater
than 30 k) system, device, or component utilizing suspension
of superconducting particulate material in liquid (e.g.,
seal, pump, etc.).
520, Synthetic Resins or Natural Rubbers, subclasses 1+ are
the generic subclasses for a synthetic resin or natural
rubber preparation. See Lines With Other Classes and Within
This Class, for the lines between Classes 520, 260, 521, 522,
523, 524, 525, 526, 527, and 528.
523, Synthetic Resins or Natural Rubbers, subclass 179 for a
process of preparing a desired or intentional composition of
at least one solid polymer or specified intermediate
condensation product, or product thereof having utility as an
ablative, or an intumescent coating composition is claimed or
solely disclosed, or to processes or preparation thereof.
GLOSSARY:
FLUID(S)
A liquid, gas, or particulate matter (e.g., dust, etc.)
suspended in a liquid or gas.
MEMBER(S)
These are component(s) that make up the seal.
PART(S)
These are component(s) (e.g., housing, casing, rod, shaft,
etc.) of the joint or juncture.
SUBCLASSES
Subclass:
300
PROCESS OF DYNAMIC SEALING:
This subclass is indented under the class definition. Sealing
means comprising use of the sealing means to oppose the flow
of fluid at the joint or juncture between relatively movable
parts and having a relatively movable relationship to at
least one of the parts.
(1) Note. Relative movement between the parts need only
occur at one time during the operation of the parts being
sealed while maintaining sealing during movement, but such
movement excludes assembly or disassembly such as the
unscrewing of a packed, threaded pipe joint.
SEE OR SEARCH THIS CLASS, SUBCLASS:
subclasses 312+ for a process of static sealing.
subclasses 345+ for a seal between relatively movable parts
(i.e., a dynamic seal).
Subclass:
301
Close proximity seal (e.g., contactless, fluent, etc.):
This subclass is indented under subclass 300. Process of
dynamic sealing wherein the sealing means is free of
relatively movable sealing contact against the relatively
movable parts and capable of acting upon or causing sealed or
sealing fluid to oppose the flow of fluid at the joint or
juncture between the relatively movable parts.
(1) Note. This and indented subclasses are for a sealing
means not dependent upon the physical contact between a
sealing member and a relatively movable part to affect
sealing such as abrading or frictional contact that forms a
positive seal at the point of contact.
(2) Note. In a close proximity seal (e.g., contactless,
fluent, etc.) a distance between a sealing member and a part
or another sealing member is not dependent upon rotational
speed between relatively movable parts whereas in a
hydrodynamic relatively rotatable radially extending sealing
face member (e.g., face, mechanical, etc.) the distance will
change when the rotational speed from normal operation to
slower or nonrotational speeds.
SEE OR SEARCH THIS CLASS, SUBCLASS:
subclasses 409+ for a dynamic, close proximity seal (e.g.,
contactless, fluent, etc.).
904 for a seal formed by a viscous fluid usually contained
by one or more physical, contacting-type seals.
Subclass:
302
Magnetic:
This subclass is indented under subclass 301. Close proximity
seal wherein the sealing means uses a polar field to control
the movement of fluent material.
SEE OR SEARCH CLASS:
252, Compositions, subclass 62.51 for a composition useful
for a magnetic purpose or a process for making the
composition, not provided for elsewhere.
Subclass:
303
Labyrinth:
This subclass is indented under subclass 301. Close proximity
seal wherein the sealing means uses a succession of baffles
that define a clearance between each other or an additional
member to provide a series of throttling zones.
Subclass:
304
Formed by pressurized sealing fluid introduced to form
barrier:
This subclass is indented under subclass 301. Close proximity
seal wherein the joint or juncture has sealing fluid
introduced into it at a pressure equal to or greater than the
pressure of the sealed fluid to oppose the flow of the sealed
fluid.
SEE OR SEARCH THIS CLASS, SUBCLASS:
926 for a seal for other than a process of dynamic close
proximity seal (e.g., contactless, fluent, etc.) created by
pressurized sealing fluid introduced to form a barrier having
means to create a fluid pressure equilibrium at a joint or
juncture.
927 for a seal for other than a process of dynamic close
proximity seal (e.g., contactless, fluent, etc.) created by
pressurized sealing fluid introduced to form a barrier having
means to create a fluid pressure different from the sealed
fluid pressure.
Subclass:
305
Floating ring or bushing:
This subclass is indented under subclass 301. Close proximity
seal wherein the seal is an annular or tubular seal forming a
gap or clearance between the relatively movable parts and
having relative movement between the relatively movable parts
to oppose the flow of fluid.
(1) Note. A floater-type seal has relative motion between
the relatively movable parts it seals between, whereas a seal
that accommodates gyratory or oscillatory motion is capable
of sealing relatively movable parts that move angularly,
axially, or perpendicularly to its main axis of motion.
Subclass:
306
Relatively rotatable radially extending sealing face member
(e.g., face, mechanical, etc.):
This subclass is indented under subclass 300. Process of
dynamic sealing including at least one of a pair of opposing
surface members relatively rotating at the joint or juncture
that defines a sealing face and wherein the joint or juncture
is at an angle to a rotational axis formed between the
relatively movable parts.
(1) Note. In a hydrodynamic relatively rotatable radially
extending sealing face member (e.g., face, mechanical, etc.)
a distance between a sealing member and a part or another
sealing member will change when the rotational speed between
relatively movable parts goes from normal operation to slower
or non-rotational speeds whereas in a close proximity seal
(e.g., contactless, fluent, etc.) the distance is not
dependent upon rotational speed.
SEE OR SEARCH THIS CLASS, SUBCLASS:
subclasses 358+ for a relatively rotatable radially
extending sealing face member (e.g., face, mechanical,
etc.).
Subclass:
307
Formed by flexible projection:
This subclass is indented under subclass 306. Process of
dynamic sealing wherein the sealing member is a pliant or
resilient extension.
Subclass:
308
Contained or compressed by gland member in packing box:
This subclass is indented under subclass 300. Process of
dynamic sealing wherein the seal is intended for use in a
chamber having an axially opened end to receive the seal and
a member that substantially closes the open end to retain or
squeeze the seal within the chamber while having an opening
for passage for one of the relatively movable parts.
SEE OR SEARCH THIS CLASS, SUBCLASS:
subclasses 329+ for a seal for well apparatus where the
seal is in a packing box contained or compressed by a gland
member.
subclasses 510+ for a dynamic, circumferential contact seal
for other than a piston intended to be contained or
compressed by a gland member in a packing box.
Subclass:
309
Peripheral radially sealing flexible projection (e.g., lip,
piston cup seal, etc.):
This subclass is indented under subclass 300. Process of
dynamic sealing wherein the sealing means is a pliant or
resilient extension having a tip for relatively movable
contact to an inner or outer perimeter of one of the
relatively movable parts.
SEE OR SEARCH THIS CLASS, SUBCLASS:
311 for a process of dynamic sealing employing a flexible
ring.
subclasses 436+ for a piston ring having a peripheral
radially sealing flexible projection (e.g., piston cup,
etc.).
subclasses 549+ for a dynamic, circumferential contact seal
for other than a piston having a peripheral, radially
sealing, flexible projection (e.g., lip seal, etc.).
Subclass:
310
Piston ring for internal combustion engine:
This subclass is indented under subclass 300. Process of
dynamic sealing wherein the sealing means is an annulus for
use on a part (i.e., a piston) that reciprocates along an
axis of an enclosing wall of an internal combustion engine
and the seal is for engaging the wall.
SEE OR SEARCH THIS CLASS, SUBCLASS:
311 for a process of dynamic sealing employing a flexible
ring.
subclasses 434+ for a piston ring or piston ring expander
or seat therefor.
Subclass:
311
Flexible ring:
This subclass is indented under subclass 300. Process of
dynamic sealing wherein the sealing means is a pliant or
resilient annulus.
SEE OR SEARCH THIS CLASS, SUBCLASS:
309 for a process of dynamic sealing employing a peripheral,
radially sealing, flexible projection (e.g., lip seal, piston
cup, etc.).
310 for a process of dynamic sealing employing a piston ring
for an internal combustion engine.
subclasses 434+ for a piston ring or piston ring expander,
or seat therefor.
subclasses 500+ for a dynamic, circumferential contact seal
for other than a piston.
Subclass:
312
PROCESS OF STATIC SEALING:
This subclass is indented under the class definition. Sealing
means comprising use of the sealing means to oppose a flow of
fluid at the joint or juncture between stationary or
relatively movable parts and having a fixed relationship to
the parts.
(1) Note. Some relative movement is permissible due to such
examples as expansion, contraction, slippage, or variable
pressure load.
SEE OR SEARCH THIS CLASS, SUBCLASS:
subclasses 300+ for a process of dynamic sealing.
subclasses 590+ for a seal between fixed parts or having a
fixed relationship against relatively movable parts.
Subclass:
313
Between parts of internal combustion engine:
This subclass is indented under subclass 312. Process of
static sealing wherein the sealing means is for use at the
joint or juncture between static parts of an internal
combustion engine.
SEE OR SEARCH THIS CLASS, SUBCLASS:
subclasses 591+ for a static contact seal intended for use
between parts of an internal combustion engine.
Subclass:
314
Pipe, conduit, or cable:
This subclass is indented under subclass 312. Process of
static sealing intended for use on an extended hollow or
electrically insulated conductor part to seal the joint or
juncture between concentric extended hollow or electrically
insulated conductor parts; the extended hollow or
electrically insulated part's end, and another extended
hollow or electrically insulated conductor part's end; or the
extended hollow part or electrically insulated conductor, and
a wall.
SEE OR SEARCH THIS CLASS, SUBCLASS:
subclasses 602+ for a static contact seal intended for use
on a pipe, conduit, or cable.
Subclass:
315
Using flexible sleeve, boot, or diaphragm:
This subclass is indented under subclass 312. Process of
static sealing wherein the sealing means has a flexible wall
member to accommodate relatively movable parts allowing
static contact sealing against the parts.
SEE OR SEARCH THIS CLASS, SUBCLASS:
389 for a relatively rotatable radially extending sealing
face member (e.g., face, mechanical, etc.) including fluid
pressure acting against a bellows or diaphragm to create an
axial bias therefor.
subclasses 391+ for a relatively rotatable, radially
extending, sealing face member (e.g., face, mechanical, etc.)
including a flexible sleeve, boot, or diaphragm to provide a
secondary seal or driving connection therefor.
504 for a dynamic, circumferential contact seal for other
than a piston that accommodates gyratory or oscillatory
motion by using a flexible connection having static contact
between the seal and one of the relatively movable parts.
subclasses 634+ for a static contact flexible sleeve, boot,
or diaphragm seal for other than an internal combustion
engine, or a pipe, conduit, or cable.
Subclass:
316
Forming in place (i.e., in situ):
This subclass is indented under subclass 312. Process of
static sealing wherein the sealing means is a sealing
material initially in a fluent or transient state introduced
into the joint or juncture between the relatively static
parts where it transforms into its final functional
condition.
SEE OR SEARCH CLASS:
264, Plastic and Nonmetallic Article Shaping or Treating:
Processes, subclasses 239+ for mechanical shaping or
molding to form or reform a shaped article, especially
subclasses 259+ for a composite article created by shaping or
forming molding material against and uniting to a preform.
413, Sheet Metal Container Making, for a process or apparatus
for performing an attendant operation before final assembly
of a lid to a receptacle, subclass 7 for a process of
applying a sealant to an end joint between the lid and the
receptacle, subclass 9 for a process of joining a preformed
gasket or liner to the lid, or subclasses 19+ for a process
of applying liquid to form a gasket or liner on the lid,
Subclass:
317
SEAL COMBINED WITH INDICATOR, SAMPLER OR INSPECTION FEATURE:
This subclass is indented under the class definition. Sealing
means combined with other means to display, test, or examine
a condition or function of the sealing means or a chamber for
the sealing means.
SEE OR SEARCH CLASS:
73, Measuring and Testing, for a detailed structure or method
for measuring or testing, subclasses 863+ for obtaining a
predetermined portion of a mass of material to be tested or
subclass 865.8 for apparatus or process for sensing and
signaling, or for indicating a physical condition.
Subclass:
318
Fluid pressure:
This subclass is indented under subclass 317. Indicator,
sampler, or inspection feature wherein the condition or
function is force per unit area exerted by a liquid or gas.
SEE OR SEARCH CLASS:
73, Measuring and Testing, for a detailed structure or method
for measuring or testing, subclasses 700+ for direct
measurement of fluid pressure.
116, Signals and Indicators, for a specifically recited and
detailed mechanical device for giving signals of the nature
of an alarm or indicator that appeals to any one or more of
the senses and combined with nominal apparatus structure from
other classes, subclass 70 for a fluid-pressure variation
alarm giving audible indication usually operated
automatically, or subclasses 266+ for a pressure indicator
having means to convey information to one of the senses.
Subclass:
319
Fluid temperature:
This subclass is indented under subclass 317. Indicator,
sampler, or inspection feature wherein the condition or
function is a measure of warmth or coldness of a liquid or
gas using a reference to some standard value.
SEE OR SEARCH CLASS:
116, Signals and Indicators, for a specifically recited and
detailed mechanical device for giving signals of the nature
of an alarm or indicator that appeals to any one or more of
the senses and combined with nominal apparatus structure from
other classes, subclasses 101+ for a thermal alarm giving
audible indication usually operated automatically, or
subclasses 216+ for a temperature responsive or compensating
means indicator having means to convey information to one of
the senses.
374, Thermal Measuring and Testing, subclasses 141+ for
temperature sensing in combination with only a nominally
recited diverse art device.
Subclass:
320
Fluid leakage:
This subclass is indented under subclass 317. Indicator,
sampler, or inspection feature wherein the condition or
function is escape or entry of fluid for the sealing means or
chamber for the sealing means.
SEE OR SEARCH CLASS:
73, Measuring and Testing, for a detailed structure or method
for measuring or testing, subclasses 46+ for testing or
determining leakage between parts mechanically fitted
together and capable of being separated without destruction.
116, Signals and Indicators, for a specifically recited and
detailed mechanical device for giving signals of the nature
of an alarm or indicator that appeals to any one or more of
the senses and combined with nominal apparatus structure from
other classes, subclasses 109+ for a liquid level alarm
giving audible indication usually operated automatically,
subclass 112 for a fluid flow alarm giving audible indication
usually operated automatically, or subclasses 227+ for a
liquid level indicator having means to convey information to
one of the senses.
Subclass:
321
Wear, proper seating or presence:
This subclass is indented under subclass 317. Indicator,
sampler, or inspection feature wherein the means shows
deterioration, proper or improper positioning, or location to
aid in sealing to oppose the flow of fluid.
SEE OR SEARCH CLASS:
73, Measuring and Testing, for a detailed structure or method
for measuring or testing, subclasses 7+ for a measurement
or test made involving any one or any combination of
operations of abrasion, milling, rubbing, or scuffing.
116, Signals and Indicators, for a specifically recited and
detailed mechanical device for giving signals of the nature
of an alarm or indicator that appeals to any one or more of
the senses and combined with nominal apparatus structure from
other classes, subclass 208 for a wear indicator for an
element having means to convey information to one of the
senses.
Subclass:
322
SEAL FOR WELL APPARATUS:
This subclass is indented under the class definition. Sealing
means wherein the sealing means is for use in a device or
mechanism that extracts fluid from earth (e.g., a well, pump,
etc.) or bores or penetrates the earth.
(1) Note. Art terms such as packer, polish rod, stringer,
tool, swab, shoe, etc., describe well or well-drilling
apparatus.
SEE OR SEARCH CLASS:
166, Wells, for well apparatus having a seal where the well
apparatus has a distinct feature (e.g.; above ground
apparatus preventing upward or downward movement of an inner
pipe, rod, or cable part depending into a well casing or
tubing; above ground apparatus sealing the annular space
between a broadly recited casing supported enclosure and an
inner member; lateral port or valve on the tubular member
above or below the packing; structural detail of the tubular
member not contributing to the sealing function; etc.) other
than sealing, subclass 82.1 for above ground apparatus
having a releasable sealing or cleaning means for an inner
part extending into the well, subclasses 84.1+ for above
ground apparatus with a seal for a reciprocating part (e.g.,
sucker rod, etc.), subclasses 86.1+ for above ground
apparatus having a valve combined with anchoring or sealing
means between a casing and an inner part, subclasses 88.1+
for above ground apparatus having a lateral port combined
with anchoring or sealing means between a casing and an inner
part, or subclasses 179+ for a packer or plug insertable from
the top of a well into a well conduit to seal between a
longitudinally extending tubular part and the well conduit,
especially subclass 87 for a seal expanded by confined fluid
from central chamber, pump, or plunger, and subclass 202 for
a cup-type seal.
175, Boring or Penetrating the Earth, for processes and means
for initially forming or radially enlarging an elongated hole
in the earth, in situ, subclasses 209+ for above ground
means engaging bore entrance directing or receiving fluid or
cuttings, subclass 214 for a seal located in a fluid head on
a tool shaft, subclass 359 for mutually contacting cutter
supports that are circumferentially displaced axes for a
rolling cutter bit or rolling cutter bit element with seal
details, or subclasses 371+ for a rolling cutter bit or
rolling cutter bit element with seal details.
Subclass:
323
Installation, removal, assembly, disassembly, or repair
feature:
This subclass is indented under subclass 322. Seal for well
apparatus including means to aid in mounting, extricating,
construction, dismantling, or restoration of the seal.
SEE OR SEARCH THIS CLASS, SUBCLASS:
subclasses 370+ for a relatively rotatable extending
sealing face member (e.g., face, mechanical, etc.) having an
installation, removal, assembly, disassembly, or repair
feature.
421 for a close proximity labyrinth seal having an
installation, removal, assembly, disassembly, or repair
feature.
435 for a piston ring, piston ring expander or seat
therefore having an installation, removal, assembly,
disassembly, or repair feature.
511 for a dynamic, circumferential contact seal intended for
containment or compression by a gland member in a packing box
having an installation, removal, assembly, disassembly, or
repair feature.
551 for a dynamic, peripheral, radially sealing, flexible
projection (e.g., lip seal, etc.) for other than a piston
having an installation, removal, assembly, disassembly, or
repair feature.
598 for a static contact seal for use between parts of an
internal combustion engine having an installation, removal,
assembly, disassembly, or repair feature.
609 for a static contact seal intended for insertion between
an end-to-end pipe, conduit, or cable joint having an
installation, removal, assembly, disassembly, or repair
feature.
630 for a static contact seal for other than an internal
combustion engine, or a pipe, conduit, or cable having an
installation, removal, assembly, disassembly, or repair
feature.
SEE OR SEARCH CLASS:
29, Metal Working, for a method of mechanical manufacture or
apparatus to assemble or disassemble, subclass 402.02 for a
method of repairing a seal or element thereof not provided
for elsewhere, or subclasses 700+ for general apparatus to
assemble or disassemble, especially subclass 236 for an
apparatus to apply or remove a resilient well protector from
a well sucker rod.
Subclass:
324
For overpressure control device (e.g., seal for a blowout
preventer, etc.):
This subclass is indented under subclass 322. Seal for well
apparatus wherein the seal is for use in an annular passage
formed between an inner part (e.g., cable, drill stem, pipe,
rod, rope, string, tubing, etc.) and a surrounding part
(e.g., well casing, tubing head, etc.) intended to regulate a
higher than normal pressure condition or prevent upward
movement of the inner part (e.g., cable, drill stem, pipe,
rod, rope, string, tubing, etc.).
SEE OR SEARCH THIS CLASS, SUBCLASS:
584 for a dynamic, circumferential contact seal for other
than a piston having an extrusion preventing (i.e.,
anti-extrusion) structure.
611 for a static contact seal intended for insertion between
an end-to-end pipe, conduit, or cable joint having an
extrusion preventing (i.e., anti-extrusion) or compression
limiting feature.
subclasses 616+ for a static contact seal intended for use
on a pipe, conduit, or cable having an associated mounting or
retaining means for the seal.
638 for a static contact seal for other than an internal
combustion engine, or a pipe, conduit or cable including a
particular extrusion preventing (i.e., anti-extrusion),
mounting, or retaining means.
SEE OR SEARCH CLASS:
251, Valves and Valve Actuation, for means to close or
restrict a flow of fluid through a passage by a definite
predetermined motion of the means combined with a seal,
subclass 1.1 for a plurality of relatively movable sealing
members that control an annular passage between a well casing
and a drill stem, axial rod, or pipe.
Subclass:
325
Segmented radially actuated (e.g., ram type, etc.):
This subclass is indented under subclass 324. Overpressure
control device wherein the seal is divided into portions and
intended for movement in a plane perpendicular to an annular
axial flow path formed by the annular passage.
SEE OR SEARCH THIS CLASS, SUBCLASS:
344 for a segmented and radially actuated seal (e.g., oil
saver, gas saver, etc.) for well apparatus.
subclasses 543+ for a dynamic segmented ring
circumferentially contacting seal for other than a piston.
626 for a static contact seal having a particular seal shape
intended for use on a pipe, conduit or cable.
632 for a peripherally segmented static contact seal for
other than an internal combustion engine, or a pipe, conduit,
or cable.
Subclass:
326
Rotatable:
This subclass is indented under subclass 324. Overpressure
control device wherein the seal is part of an assembly fixed
to the inner part (e.g., cable, drill stem, pipe, rod, rope,
string, tubing, etc.) that rotates relative to the
surrounding part (e.g., well casing, tubing head, etc.).
Subclass:
327
Axially compressed ring:
This subclass is indented under subclass 324. Overpressure
control device wherein the seal has an annular shape and is
concentric to the annular passage including means acting
along an annular axial flow path formed by the annular
passage axis to squeeze the seal.
SEE OR SEARCH THIS CLASS, SUBCLASS:
subclasses 328+ for a seal for above ground well apparatus
actuated along its longitudinal axis.
Subclass:
328
Longitudinally actuated packer for above ground apparatus:
This subclass is indented under subclass 322. Seal for well
apparatus wherein the seal is between axially spaced members
where one or more of the members axially bias the seal into
sealing engagement at the joint or juncture between the part
(e.g., axial rod, pipe, drill stem, etc.) surrounded by
another part (e.g., well casing) intended to function or
remain at ground level.
SEE OR SEARCH THIS CLASS, SUBCLASS:
327 for a sealing ring for well apparatus having an
overpressure control device that works by axially compressing
the seal.
Subclass:
329
Contained or compressed by gland member in packing box:
This subclass is indented under subclass 328. Longitudinally
actuated packer wherein the seal is intended for use in a
well apparatus having a chamber including an axially opened
end to receive the seal and a member that substantially
closes the open end to retain or squeeze the seal within the
chamber while having an opening for passage for one of the
parts.
SEE OR SEARCH THIS CLASS, SUBCLASS:
308 for a process of dynamic sealing employing a seal to be
contained or compressed by a gland member in a packing box.
subclasses 510+ for a dynamic, circumferential contact seal
for other than a piston intended to be contained or
compressed by a gland member in a packing box.
subclasses 620+ for a static contact seal intended for use
on a pipe, conduit, or cable including a clamping gland.
Subclass:
330
For line or cable:
This subclass is indented under subclass 329. Seal for well
apparatus wherein the part (e.g., axial rod, pipe, drill
stem, etc.) is a wire or cord.
Subclass:
331
Inflatable packer:
This subclass is indented under subclass 322. Seal for well
apparatus including a member having a cavity or chamber
therein or forms a cavity or chamber that includes one of the
parts of the joint or juncture in the well apparatus for
entry of a pressurized fluid to expand at least a portion of
the sealing means into position against another part of the
joint or juncture.
SEE OR SEARCH THIS CLASS, SUBCLASS:
subclasses 336+ for a seal intended for use in below ground
well apparatus.
605 for a hollow, fluid-filled, or inflatable static contact
seal or an associated member intended for use on a pipe,
conduit, or cable.
646 for a static contact seal having a hollow or fluid
filled inflatable chamber for other than an internal
combustion engine, or a pipe, conduit, or cable.
Subclass:
332
Deforms radially inward:
This subclass is indented under subclass 331. Inflatable
packer for internal expansion against the part (e.g., rod,
shaft, tubing, line, cable, etc.) extending through the
inflatable packer.
SEE OR SEARCH THIS CLASS, SUBCLASS:
583 for a dynamic inflatable or biased by an inflatable
member circumferential contact seal for other than a piston.
Subclass:
333
And inflating medium control:
This subclass is indented under subclass 331. Inflatable
packer and a device or mechanism to regulate the pressurized
fluid.
Subclass:
334
Particular wall structure:
This subclass is indented under subclass 331. Inflatable
packer wherein the expanded portion of the sealing means or
the sealing means biased by the expandable member has
specific construction.
SEE OR SEARCH THIS CLASS, SUBCLASS:
subclasses 340+ for a longitudinally actuated packing
sleeve for below ground well apparatus having a particular
wall structure.
Subclass:
335
Axially facing packing cup:
This subclass is indented under subclass 322. Seal for well
apparatus wherein the seal has an open containerlike shape or
form (e.g., C, U, V, etc.) radially extending to a
longitudinal axis of one of the parts.
SEE OR SEARCH THIS CLASS, SUBCLASS:
439 for a piston ring including a peripheral, radially
sealing, flexible projection having a C, U, or V
cross-sectional profile forming an axially facing cup (e.g.,
piston cup, etc.).
626 for a static contact seal having a particular seal shape
intended for use on a pipe, conduit, or cable.
Subclass:
336
For below ground apparatus:
This subclass is indented under subclass 322. Seal for well
apparatus wherein the seal's use is on a device intended to
function below earth level.
SEE OR SEARCH THIS CLASS, SUBCLASS:
subclasses 331+ for an inflatable packer-type seal for well
apparatus.
Subclass:
337
Longitudinally actuated packer:
This subclass is indented under subclass 336. Below ground
apparatus wherein the seal's intended use is between axially
spaced members and biased into sealing engagement by axial
movement of at least one of the members.
Subclass:
338
Packing sleeve:
This subclass is indented under subclass 337. Longitudinally
actuated packer wherein the seal has an elongated tubular
form.
SEE OR SEARCH THIS CLASS, SUBCLASS:
585 for a dynamic, circumferential contacting, elongated
sleeve or bushing for other than a piston.
607 for a sleeve-type, static contact seal intended for a
pipe, conduit, or cable.
Subclass:
339
Expanded by wedging member:
This subclass is indented under subclass 338. Packing sleeve
includes a member having an inclined surface to radially bias
the packing sleeve.
Subclass:
340
Particular wall structure:
This subclass is indented under subclass 338. Packing sleeve
wherein the packing sleeve has specific construction.
SEE OR SEARCH THIS CLASS, SUBCLASS:
334 for an inflatable packer for well apparatus having a
particular wall structure.
Subclass:
341
Reinforcing feature:
This subclass is indented under subclass 340. Particular wall
structure wherein the wall structure includes means to
strengthen the wall.
Subclass:
342
Plural stacked rings:
This subclass is indented under subclass 337. Longitudinally
actuated packer comprising annular seals arranged axially in
series.
Subclass:
343
Seal (e.g., wiper, oil saver, stripper, etc.) accommodates
irregular size of inner part:
This subclass is indented under subclass 322. Seal for well
apparatus wherein the seal surrounds and adjusts to an inside
part (e.g., tubing, string, rod, etc.) having varying
proportions and intended to clean by rubbing or pushing off
adherent foreign matter.
Subclass:
344
Segmented radially actuated packer (e.g., oil saver, gas
saver, etc.) for above ground apparatus:
This subclass is indented under subclass 322. Seal for well
apparatus wherein the seal is divided into portions intended
for movement in a direction perpendicular to and seal an
annular axial flow path formed at the joint or juncture
between the part (e.g., axial rod, pipe, drill stem, etc.)
surrounded by another part (e.g., well casing) intended to
function or remain at ground level.
SEE OR SEARCH THIS CLASS, SUBCLASS:
325 for a segmented and radially actuated (e.g., ram-type,
etc.) seal for a well apparatus overpressure control device
(e.g., seal for a blowout preventer, etc.).
subclasses 543+ for a dynamic, segmented ring
circumferentially contacting seal for other than a piston.
626 for a static contact seal having a particular seal shape
intended for use on a pipe, conduit, or cable.
632 for a peripherally segmented static contact seal for
other than an internal combustion engine, or a pipe, conduit,
or cable.
Subclass:
345
SEAL BETWEEN RELATIVELY MOVABLE PARTS (I.E., DYNAMIC SEAL):
This subclass is indented under the class definition. Sealing
means comprising sealing means to oppose the flow of fluid at
the joint or juncture between relatively movable parts and
having a relatively movable relationship to at least one of
the parts.
(1) Note. Relative movement between the parts need only
occur at one time during the operation of the parts being
sealed while maintaining sealing during movement, but such
movement excludes assembly or disassembly such as the
unscrewing of a packed threaded pipe joint.
SEE OR SEARCH THIS CLASS, SUBCLASS:
subclasses 300+ for a process of dynamic sealing.
subclasses 590+ for a seal between fixed parts or having a
fixed relationship against relatively movable parts.
906 for a seal for a part having indefinite length (e.g.,
strip, sheet, etc.).
SEE OR SEARCH CLASS:
222, Dispensing, subclass 542 for a seal provided for a
joint, closure or flow controller of a dispenser.
366, Agitating, subclass 183.4 for a closed connection
(e.g., sealed joint, etc.) between a static conveyor with
gravity discharge and a rotating mixing chamber.
415, Rotary Kinetic Fluid Motors or Pumps, for a means of
guiding or confining (e.g., casing, distributing means, etc.)
a working fluid (i.e., a liquid or gas that contacts or
supports a rotary means that drives or is driven by the
liquid or gas), subclass 109 for a rotating shaft having an
abutment surface imparting motion in a sealing fluid inside a
chamber, subclasses 110+ for a seal to separate a fluid path
to an interior part of an assembly between relatively movable
parts and the working fluid path, subclasses 170.1+ for a
seal between the rotary means (e.g., runner, etc.) and a
static part, or subclass 230 for a seal between a shaft or
shaft sleeve and a static part.
494, Imperforate Bowl: Centrifugal Separators, for an
apparatus or process that breaks down or subdivides a mixture
of fluent material into components by using a receptaclelike
part having a wall to subject the material to centrifugal
force, subclasses 38+ including a seal.
Subclass:
346
Diverse and distinct dynamic seals:
This subclass is indented under subclass 345. Dynamic seal
includes disparate seal types distinguishable from each other
and are for location on associated parts of the joint or
juncture to constitute a sealing assembly.
(1) Note. The components forming the sealing assembly may
not be part of a single (e.g., removable, etc.) unit.
(2) Note. Seals consisting exclusively of the same type
(e.g., lip, mechanical, labyrinth, impeller, etc.) are not
proper for this or indented subclasses.
(3) Note. A translatable seal (e.g., floater, etc.) that
carries thereon another diverse seal is not distinct.
(4) Note. Cross diverse and distinct dynamic seals into
subclasses for the seal types.
Subclass:
347
Close proximity seal (e.g., contactless, fluent, etc.):
This subclass is indented under subclass 346. Diverse and
distinct dynamic seals wherein the sealing means is free of
relatively movable sealing contact relating to the relatively
movable parts and capable of acting upon or causing a sealed
or sealing fluid to oppose the flow of fluid at the joint or
juncture.
SEE OR SEARCH THIS CLASS, SUBCLASS:
subclasses 301+ for a process of dynamic close proximity
sealing (e.g., contactless, fluent, etc.).
subclasses 409+ for a dynamic close proximity seal (e.g.,
contactless, fluent, etc.).
904 for a seal formed by a viscous fluid usually contained
by one or more physical contacting type seals.
Subclass:
348
And relatively rotatable radially extending contacting
sealing members (e.g., face, mechanical, etc.):
This subclass is indented under subclass 347. Close proximity
seal and at least one of a pair of opposing surface members
relatively rotating at the joint or juncture that defines a
sealing face and wherein the joint or juncture is at an angle
to a rotational axis formed between the relatively movable
parts.
(1) Note. A hydrodynamic, relatively rotatable, radially
extending, sealing face member (e.g., face, mechanical, etc.)
will only have a gap during normal rotational operation and
will close its gap under slower or nonrotational speeds
whereas a close proximity seal (e.g., contactless, etc.) of
the impeller type always has a gap between a fluent impeller
and a part or another sealing member.
SEE OR SEARCH THIS CLASS, SUBCLASS:
subclasses 306+ for a process of using a relatively
rotatable, radially extending, sealing face member (e.g.,
face, mechanical, etc.).
subclasses 352+ for diverse and distinct dynamic seals
having a relatively rotatable, radially extending, sealing
face member (e.g., face, mechanical, etc.) and other than a
close proximity seal (e.g., contactless, fluent, etc.).
subclasses 358+ for a relatively rotatable, radially
extending, sealing face member (e.g., face, mechanical,
etc.).
Subclass:
349
And circumferential peripheral radially sealing flexible
projection (e.g., lip seal, etc.):
This subclass is indented under subclass 348. Face or
mechanical seal and a pliant or resilient extension having a
tip for relatively movable contact to an inner or outer
perimeter of one of the parts.
SEE OR SEARCH THIS CLASS, SUBCLASS:
309 for a process of dynamic sealing employing a peripheral,
radially sealing, flexible projection (e.g., lip seal, piston
cup, etc.).
subclasses 549+ for a dynamic, circumferential contact seal
for other than a piston having a peripheral, radially
sealing, flexible projection (e.g., lip seal, etc.).
Subclass:
350
And circumferential contact seal:
This subclass is indented under subclass 347. Close proximity
seal and the seal having radial, peripheral, surface contact
against one or more of the relatively movable parts.
Subclass:
351
Peripheral radially sealing flexible projection (e.g., lip
seal, etc.):
This subclass is indented under subclass 350. Circumferential
contact seal wherein the seal is a pliant or resilient
extension having a tip for relatively movable contact to an
inner or outer perimeter of one of the parts.
SEE OR SEARCH THIS CLASS, SUBCLASS:
309 for a process of dynamic sealing employing a peripheral,
radially sealing, flexible projection (e.g., lip seal, piston
cup, etc.).
subclasses 549+ for a dynamic, circumferential contact seal
for other than a piston having a peripheral, radially
sealing, flexible projection (e.g., lip seal, etc.).
Subclass:
352
Relatively rotatable radially extending contacting sealing
members (e.g., face, mechanical, etc.):
This subclass is indented under subclass 346. Diverse and
distinct dynamic seals including at least one of a pair of
opposing surface members relatively rotating at the joint or
juncture that defines a sealing face and wherein the joint or
juncture is at an angle to a rotational axis formed between
the relatively movable parts.
SEE OR SEARCH THIS CLASS, SUBCLASS:
subclasses 306+ for a process of using a relatively
rotatable, radially extending, sealing face member (e.g.,
face, mechanical, etc.).
subclasses 348+ for diverse and distinct dynamic seals
including a close proximity seal (e.g., contactless, fluent,
etc.) and a relatively rotatable, radially extending, sealing
face member (e.g., face, mechanical, etc.).
subclasses 358+ for a relatively rotatable, radially
extending, sealing face member (e.g., face, mechanical,
etc.).
Subclass:
353
And circumferential peripheral radially sealing flexible
projection (e.g., lip seal, etc.):
This subclass is indented under subclass 352. Diverse and
distinct dynamic seals and a pliant or resilient extension
having a tip for relatively movable contact to an inner or
outer perimeter of one of the parts.
SEE OR SEARCH THIS CLASS, SUBCLASS:
309 for a process of dynamic sealing employing a peripheral
radially sealing flexible projection (e.g., lip seal, piston
cup, etc.).
subclasses 549+ for a dynamic circumferential contact seal
for other than a piston having a peripheral radially sealing
flexible projection (e.g., lip seal, etc.).
Subclass:
354
Helically threaded part:
This subclass is indented under subclass 345. Dynamic seal
wherein at least one of the parts has an indent or projection
wound twistlike about its surface and has relative movement
to the seal.
SEE OR SEARCH THIS CLASS, SUBCLASS:
subclasses 911+ for a seal and nominal motion transmitting
means.
Subclass:
355
Brush seal:
This subclass is indented under subclass 345. Dynamic seal
wherein the sealing means is a plurality of bristles located
at the joint or juncture on one of the parts and projecting
towards the other.
Subclass:
356
For journal box (e.g., railway car journal, etc.):
This subclass is indented under subclass 345. Dynamic seal
wherein the sealing means is for a box that encloses part of
a machine shaft or axle supported by a bearing.
SEE OR SEARCH THIS CLASS, SUBCLASS:
subclasses 543+ for a dynamic, segmented ring,
circumferentially contacting seal for other than a piston.
subclasses 579+ for a dynamic, circumferential contact,
floating ring or bushing seal for other than a piston.
SEE OR SEARCH CLASS:
384, Bearings, for more than nominal bearing structure or
detail (e.g., liner, bearing race, cage, etc.) combined with
a specific seal, subclass 159 for a railway car journal
bearing having a detailed seal.
Subclass:
357
For rotary piston:
This subclass is indented under subclass 345. Dynamic seal
wherein the sealing means is for an apparatus having a
working chamber formed between relatively rotatable parts to
aid in sealing to oppose the flow of fluid.
SEE OR SEARCH THIS CLASS, SUBCLASS:
398 for a relatively rotatable, radially extending, sealing
face member (e.g., face, mechanical, etc.) that accommodates
or exhibits eccentric, gyratory, or oscillatory motion.
SEE OR SEARCH CLASS:
418, Rotary Expansible Chamber Devices, subclasses 104+ for
a working member having relative rotation to a surface of a
working chamber to expand and contract the volume of the
working chamber with a movable, expansible, adjustable, or
deformable seal.
Subclass:
358
Relatively rotatable radially extending sealing face member
(e.g., face, mechanical, etc.):
This subclass is indented under subclass 345. Dynamic seal
including at least one of a pair of opposing surface members
relatively rotating at the joint or juncture that defines a
sealing face and wherein the joint or juncture is at an angle
to a rotational axis formed between the relatively movable
parts.
SEE OR SEARCH THIS CLASS, SUBCLASS:
subclasses 306+ for a process of using a relatively
rotatable, radially extending, sealing face member (e.g.,
face, mechanical, etc.).
subclasses 348+ for diverse and distinct dynamic seals
including a close proximity seal (e.g., contactless, fluent,
etc.) and a relatively rotatable radially extending sealing
face member (e.g., face, mechanical, etc.).
subclasses 352+ for diverse and distinct dynamic seals
having a relatively rotatable, radially extending, sealing
face member (e.g., face, mechanical, etc.) and other than a
close proximity seal (e.g., contactless, fluent, etc.).
SEE OR SEARCH CLASS:
175, Boring or Penetrating The Earth, for processes and means
for initially forming or radially enlarging an elongated hole
in the earth in situ, subclass 359 for mutually contacting
cutter supports that are circumferentially displaced axes for
a rolling cutter bit or rolling cutter bit element with seal
details or subclass 371 for a rolling cutter bit or rolling
cutter bit element with seal details.
305, Wheel Substitutes for Land Vehicles, subclasses 100+
for a flexible track joint structure (e.g., pin, link, etc.)
including a seal, deflector, or scraper.
384, Bearings, for more than nominal bearing structure or
detail (e.g., liner, bearing race, cage, etc.) combined with
a specific seal, subclasses 139+ for a plain, radial
bearing or subclasses 481+ for a radial, antifriction bearing
where the seal is a relatively rotatable, radially extending,
sealing face member (e.g., face, mechanical, etc.).
417, Pumps, for a general means to move a fluid from one
place to another having an inlet and an outlet, subclass
423.11 for a rotary, electric motor and rotary,
nonexpansible chamber pump having sealing means
therebetween.
Subclass:
359
Temperature responsive feature:
This subclass is indented under subclass 358. Sealing face
member including means to react to a change in temperature.
(1) Note. This and indented subclasses do not include a
seal that merely accommodates thermal expansion between
parts.
SEE OR SEARCH THIS CLASS, SUBCLASS:
subclasses 931+ for a seal for other than a relatively
rotatable, radially extending, sealing face member including
a temperature responsive feature having a temperature
responsive feature.
Subclass:
360
Accommodates or prevents thermal distortion:
This subclass is indented under subclass 359. Temperature
responsive feature for adjusting to or deterring deformation
caused by the change in temperature.
Subclass:
361
Multiple sealing faces (e.g., double seals, etc.):
This subclass is indented under subclass 358. Sealing face
member including more than one pair of sealing faces.
(1) Note. Sealing face members having one or more points of
contact between them form only one sealing face.
SEE OR SEARCH CLASS:
384, Bearings, for more than nominal bearing structure or
detail (e.g., liner, bearing race, cage, etc.) combined with
a specific seal, subclass 143 for a plain, radial bearing
having plural seals consisting of a relatively rotatable,
radially extending, sealing face member (e.g., face,
mechanical, etc.).
Subclass:
362
Floating intermediate sealing face member:
This subclass is indented under subclass 361. Multiple
sealing faces including a sealing face member located between
and free (i.e., not fixed to one of the relatively movable
parts) for rotating relatively to the relatively rotatable
sealing face members fixed to their relatively movable
parts.
Subclass:
363
Including an outwardly axial biasing member:
This subclass is indented under subclass 362. Floating
intermediate sealing face member including means to force the
floating intermediate sealing face member's sealing faces
away from each other along a rotational axis formed between
the relatively movable parts.
Subclass:
364
Concentric and radially spaced:
This subclass is indented under subclass 361. Multiple
sealing faces including more than one pair of sealing face
members having a common rotational axis formed between the
relatively movable parts and having radially spaced, sealing
face, contacting surfaces.
Subclass:
365
Three or more:
This subclass is indented under subclass 361. Multiple
sealing faces having three or more sealing face surfaces.
Subclass:
366
Shaft mounted sealing face members biased axially away from
each other:
This subclass is indented under subclass 361. Multiple
sealing faces wherein the surface members are on the one
relatively movable part (e.g., shaft, etc.) enclosed by the
other relatively movable part (e.g., housing, casing, etc.)
and forced along the rotational axis formed between the
relatively movable parts in an outwardly direction.
Subclass:
367
Shaft mounted sealing face members biased axially towards
each other:
This subclass is indented under subclass 361. Multiple
sealing faces wherein the surface members are on the one
relatively movable part (e.g., shaft, etc.) enclosed by the
other relatively movable part (e.g., housing, casing, etc.)
and forced along the rotational axis formed between the
relatively movable parts in an inwardly direction.
Subclass:
368
Housing mounted sealing face members biased axially away from
each other:
This subclass is indented under subclass 361. Multiple
sealing faces wherein the surface members are on the one
relatively movable part (e.g., housing, casing, etc.) that
encloses the other relatively movable part (e.g., shaft,
etc.) and forced along the rotational axis formed between the
relatively movable parts in an outwardly direction.
Subclass:
369
Housing mounted sealing face members biased axially towards
each other:
This subclass is indented under subclass 361. Multiple
sealing faces wherein the surface members are on the one
relatively movable part (e.g., housing, casing, etc.) that
encloses the other relatively movable part (e.g., shaft,
etc.) and forced along the rotational axis formed between the
relatively movable parts in an inwardly direction.
Subclass:
370
Installation, removal, assembly, disassembly or repair
feature:
This subclass is indented under subclass 358. Sealing face
member including means to aid in mounting, extricating,
construction, dismantling, or restoration of the seal.
SEE OR SEARCH THIS CLASS, SUBCLASS:
323 for a seal for well apparatus having an installation,
removal, assembly, disassembly, or repair feature.
421 for a close proximity labyrinth seal having an
installation, removal, assembly, disassembly, or repair
feature.
435 for a piston ring, piston ring expander, or seat
therefor having an installation, removal, assembly,
disassembly, or repair feature.
511 for a dynamic, circumferential contact seal intended for
containment or compression by a gland member in a packing box
having an installation, removal, assembly, disassembly, or
repair feature.
551 for a dynamic, peripheral, radially sealing, flexible
projection (e.g., lip seal, etc.) for other than a piston
having an installation, removal, assembly, disassembly, or
repair feature.
598 for a static contact seal for use between parts of an
internal combustion engine having an installation, removal,
assembly, disassembly, or repair feature.
609 for a static contact seal intended for insertion between
an end-to-end pipe, conduit, or cable joint having an
installation, removal, assembly, disassembly, or repair
feature.
630 for a static contact seal for other than an internal
combustion engine, or a pipe, conduit, or cable having an
installation, removal, assembly, disassembly, or repair
feature.
SEE OR SEARCH CLASS:
29, Metal Working, for a method of mechanical manufacture or
apparatus to assemble or disassemble, subclass 402.02 for a
method of repairing a seal or element thereof not provided
for elsewhere, or subclasses 700+ for general apparatus to
assemble or disassemble.
Subclass:
371
Unitized seal assembly (e.g., cartridge, etc.):
This subclass is indented under subclass 370. Sealing face
member wherein the sealing face member and a biasing means
therefor are in an operative assembly adapted to fit on one
of the parts.
SEE OR SEARCH THIS CLASS, SUBCLASS:
subclasses 572+ for a dynamic, circumferential contacting,
peripheral, radially sealing, flexible projection (e.g., lip
seal, etc.) including a particular mounting, frame, casing,
or reinforcement feature for other than a piston.
Subclass:
372
Having rotation prevention (i.e., anti-rotation) feature for
the sealing face member:
This subclass is indented under subclass 371. Unitized
cartridge including means to prevent relative rotation
between the unitized cartridge and the sealing face member.
Subclass:
373
Lug or rib:
This subclass is indented under subclass 372. Rotation
prevention wherein the rotation prevention means is an inward
or outward radially extending projection that fits into a
corresponding slot, recess, or groove.
Subclass:
374
Retains opposed sealing face members:
This subclass is indented under subclass 371. Unitized
cartridge including a pair of sealing face members.
Subclass:
375
Mounted in housing or casing:
This subclass is indented under subclass 371. Unitized seal
assembly wherein the unitized seal assembly is for
installation in the relatively movable part (e.g., housing,
casing, etc.) that encloses the other relatively movable part
(e.g., shaft, etc.).
Subclass:
376
Snap fit into groove:
This subclass is indented under subclass 375. Mounted in
housing or casing wherein the unitized seal assembly has a
projecting portion to secure by a sudden sharp engagement
into a groove in the housing or casing.
SEE OR SEARCH THIS CLASS, SUBCLASS:
925 for a seal for other than a unitized, relatively
rotatable, radially extending, sealing face member that snap
fits into a groove of a housing or casing having a snap fit
feature for mounting or assembly.
Subclass:
377
Particular axial biasing feature:
This subclass is indented under subclass 358. Sealing face
member including a specific means to force it (i.e., against
or apart from the opposing sealing face member) along its
rotational axis formed between the relatively movable parts.
Subclass:
378
Magnetic:
This subclass is indented under subclass 377. Particular
axial biasing feature wherein the axial bias is a polar
field.
SEE OR SEARCH THIS CLASS, SUBCLASS:
501 for a dynamic circumferential contact seal for other
than a piston and a magnetic means to bias the seal.
629 for a static contact seal for other than an internal
combustion engine, or a pipe, conduit, or cable that uses
magnetism.
SEE OR SEARCH CLASS:
335, Electricity: Magnetically Operated Switches, Magnets,
and Electromagnets; subclasses 209+ for a magnet or an
electromagnet, configured or arranged to perform external
mechanical work but which does not include the external
mechanical work.
Subclass:
379
Particular spring feature:
This subclass is indented under subclass 377. Particular
axial biasing feature wherein the axial bias is an elastic
contrivance or body having a specific resilient
characteristic.
Subclass:
380
Made of elastomeric material:
This subclass is indented under subclass 379. Particular
spring feature wherein the spring is manufactured of a
rubberlike material.
Subclass:
381
Frustoconical shape:
This subclass is indented under subclass 380. Made of
elastomeric material wherein the spring has a frustrum of a
cone configuration.
Subclass:
382
O-ring shape:
This subclass is indented under subclass 380. Made of
elastomeric material and is circular in both plain view and
cross-section.
SEE OR SEARCH THIS CLASS, SUBCLASS:
910 for an O-ring seal.
Subclass:
383
Imbedded in another material:
This subclass is indented under subclass 379. Particular
spring feature wherein the spring is inside a mass of another
substance.
Subclass:
384
Washerlike shape:
This subclass is indented under subclass 379. Particular
spring feature wherein the spring has a general disclike
configuration (e.g., having a frustoconical or "Belleville"
profile, incorporating radial or axial corrugation, or
including one or more radially extending fingers, etc.).
Subclass:
385
Arrangement or location:
This subclass is indented under subclass 379. Particular
spring feature wherein the spring has a specific organization
or position.
Subclass:
386
Radially biasing member creates axial bias:
This subclass is indented under subclass 385. Arrangement or
location wherein the spring exerts its force in a direction
perpendicular to the rotational axis formed between the
relatively movable parts and transform the force into the
axial bias.
Subclass:
387
Fluid pressure:
This subclass is indented under subclass 377. Particular
axial bias feature comprising means to create axial bias by
using hydraulics or pneumatics.
Subclass:
388
Creates counter pressure:
This subclass is indented under subclass 387. Fluid pressure
axial bias wherein the fluid pressure generates a force
opposing the axial biasing means that forces the sealing face
members together to reduce the axial load exerted at the
sealing face.
Subclass:
389
And bellows or diaphragm:
This subclass is indented under subclass 387. Fluid pressure
axial bias wherein the fluid pressure pushes against a
flexible wall member to create axial bias.
SEE OR SEARCH THIS CLASS, SUBCLASS:
315 for a process of static sealing employing a flexible
sleeve, boot, or diaphragm.
subclasses 391+ for a relatively rotatable, radially
extending, sealing face member (e.g., face, mechanical, etc.)
including a flexible sleeve, boot, or diaphragm to provide a
secondary seal or driving connection therefor.
504 for a dynamic, circumferential contact seal for other
than a piston that accommodates gyratory or oscillatory
motion by using a flexible connection having static contact
between the seal and one of the relatively movable parts.
subclasses 634+ for a static, contact, flexible sleeve,
boot, or diaphragm seal for other than an internal combustion
engine, or a pipe, conduit, or cable.
Subclass:
390
Particular secondary mounting seal or driving connection:
This subclass is indented under subclass 358. Sealing face
member including a specific seal at a joint or juncture
between the sealing face member and the part it mounts on or
a specific supporting means linking the sealing face member
to the part (e.g., shaft, etc.) relatively rotating to and
enclosed by the other part (e.g., housing, casing, etc.).
SEE OR SEARCH THIS CLASS, SUBCLASS:
subclasses 911+ for a seal for other than a relatively
rotatable, radially extending, sealing face member (e.g.,
face, mechanical, etc.) having nominal motion transmitting
means.
SEE OR SEARCH CLASS:
384, Bearings, for more than nominal bearing structure or
detail (e.g., liner, bearing race, cage, etc.) combined with
a specific seal, subclass 142 for a plain radial bearing
having a relatively rotatable radially extending sealing face
member (e.g., face, mechanical, etc.) axially translatable
and rotatable to a shaft.
Subclass:
391
Flexible sleeve, boot, or diaphragm:
This subclass is indented under subclass 390. Mounting seal
or driving connection including a flexible wall member to
accommodate relative axial movement between the sealing face
member and one of the parts.
SEE OR SEARCH THIS CLASS, SUBCLASS:
389 for a relatively rotatable, radially extending, sealing
face member (e.g., face, mechanical, etc.) including fluid
pressure acting against a bellows or diaphragm to create an
axial bias therefor.
504 for a dynamic, circumferential contact seal for other
than a piston that accommodates gyratory or oscillatory
motion by using a flexible connection having static contact
between the seal and one of the relatively movable parts.
subclasses 634+ for a static, contact flexible sleeve,
boot, or diaphragm seal for other than an internal combustion
engine, or a pipe, conduit, or cable.
SEE OR SEARCH CLASS:
384, Bearings, for more than nominal bearing structure or
detail (e.g., liner, bearing race, cage, etc.) combined with
a specific seal, subclass 141 for a plain radial bearing
having a relatively rotatable radially extending sealing face
member (e.g., face, mechanical, etc.) including a diaphragm
attached to it and a part axially movable therewith.
Subclass:
392
Between sealing face member and shaft or part relating to
shaft:
This subclass is indented under subclass 391. Flexible
sleeve, boot, or diaphragm wherein the flexible sleeve, boot,
or diaphragm is between the sealing face member and the part
(e.g., shaft, etc.) relatively rotating to and enclosed by
the other part (e.g., housing, casing, etc.).
Subclass:
393
Particular connecting feature to sealing face member:
This subclass is indented under subclass 391. Flexible
sleeve, boot, or diaphragm including a specific means to
attach the flexible sleeve, boot, or diaphragm to the sealing
face member.
Subclass:
394
Peripheral radially sealing flexible projection (e.g., lip
seal, etc.):
This subclass is indented under subclass 390. Mounting seal
or driving connection wherein the secondary seal is a pliant
or resilient extension having a tip for sealing against the
sealing face member or one of the parts.
SEE OR SEARCH THIS CLASS, SUBCLASS:
subclasses 549+ for a dynamic circumferential contact seal
for other than a piston having a peripheral radially sealing
flexible projection (e.g., lip seal, etc.).
Subclass:
395
U- or V-shaped cross-sectional profile:
This subclass is indented under subclass 394. Peripheral
radially sealing flexible projection including another
projection forming a U or V in a view of a vertical plane
cutting across the seal at right angles to one of its
principal horizontal dimensions.
SEE OR SEARCH THIS CLASS, SUBCLASS:
530 for a dynamic, circumferential contact seal for other
than a piston intended to be contained or compressed by a
gland member in a packing box having a C, M, U, V, X, or Z
cross-sectional seal shape.
647 for a static seal having a C-, U-, or V-shaped
cross-sectional seal profile for other than an internal
combustion engine, or a pipe, conduit, or cable.
Subclass:
396
Axially compressed packing:
This subclass is indented under subclass 390. Mounting seal
or driving connection including means to bias the secondary
seal into contacting the sealing face member or one of the
parts by squeezing it along the rotational axis.
SEE OR SEARCH THIS CLASS, SUBCLASS:
subclasses 510+ for a dynamic, circumferential contact seal
for other than a piston intended to be contained or
compressed by a gland member in a packing box.
Subclass:
397
Frictionally engaged or interfitting projection and recess:
This subclass is indented under subclass 390. Mounting seal
or driving connection wherein the driving connection is by
surface adhesion or a reciprocally fitting protrusion and
indent.
Subclass:
398
Eccentric, gyratory or oscillatory motion:
This subclass is indented under subclass 358. Sealing face
member including accommodation or exhibition of angular or
lateral deflection, circular displacement, eccentric
movement, or vibration.
(1) Note. A seal that accommodates gyratory or oscillatory
motion is capable of sealing relatively movable parts that
move angularly or perpendicularly to its main axis of motion;
whereas a floater-type seal has relative motion between the
relatively movable parts it seals.
SEE OR SEARCH THIS CLASS, SUBCLASS:
357 for a dynamic seal for a rotary piston.
subclasses 503+ for a dynamic, circumferential contact seal
for other than a piston that accommodates gyrating or
oscillating motion.
916 for a seal having vibration dampening means.
SEE OR SEARCH CLASS:
418, Rotary Expansible Chamber Devices, subclass 55.4 for a
helical working member (e.g., scroll, etc.) having planetary
or planetating movement including a seal.
Subclass:
399
Particular sealing face member configuration:
This subclass is indented under subclass 358. Sealing face
member wherein the sealing face member has a specific shape
or formation.
SEE OR SEARCH CLASS:
418, Rotary Expansible Chamber Devices, subclass 55.4 for a
helical working member (e.g., scroll, etc.) having planetary
or planetating movement including a seal.
Subclass:
400
Hydrodynamic feature:
This subclass is indented under subclass 399. Particular
sealing face member configuration wherein the sealing face
member has means to create turbulence against the opposing
sealing face.
(1) Note. In a hydrodynamic, relatively rotatable, radially
extending, sealing face member (e.g., face, mechanical,
etc.), a distance between a sealing member and a part or
another sealing member will change when the rotational speed
between relatively movable parts goes from normal operation
to slower or nonrotational speeds whereas in a close
proximity seal (e.g., contactless, fluent, etc.), the
distance is not dependent upon rotational speed.
Subclass:
401
Fluid passage to the sealing face:
This subclass is indented under subclass 399. Particular
sealing face member configuration wherein the sealing face
member has a passageway to permit flow of fluid to the
sealing face.
SEE OR SEARCH THIS CLASS, SUBCLASS:
408 for a relatively rotatable, radially extending, sealing
face member (e.g., face, mechanical, etc.) including means to
introduce, circulate, or remove fluid.
Subclass:
402
Flexible projection (e.g., lip seal, etc.):
This subclass is indented under subclass 399. Particular
sealing face member configuration wherein the surface member
is a pliant or resilient extension having a tip for
relatively movable contact against the other surface member.
SEE OR SEARCH THIS CLASS, SUBCLASS:
subclasses 549+ for a dynamic, circumferential contact seal
for other than a piston having a peripheral, radially
sealing, flexible projection (e.g., lip seal, etc.).
SEE OR SEARCH CLASS:
384, Bearings, for more than nominal bearing structure or
detail (e.g., liner, bearing race, cage, etc.) combined with
a specific seal, subclass 140 for a plain, radial bearing
having a flexible, relatively rotatable, radially extending,
sealing face member (e.g., face, mechanical, etc.).
Subclass:
403
Angled or tapered sealing face:
This subclass is indented under subclass 399. Particular
sealing face member configuration wherein the sealing face is
at an angle at other than ninety degrees to the axis of
rotation at the joint or juncture.
Subclass:
404
Made of particular material:
This subclass is indented under subclass 358. Sealing face
member wherein the sealing member has a specific composition
or substance.
SEE OR SEARCH THIS CLASS, SUBCLASS:
subclasses 935+ for a seal for other than a relatively
rotatable, radially extending, sealing face member (e.g.,
face, mechanical, etc.) made out of a particular material.
SEE OR SEARCH CLASS:
384, Bearings, for more than nominal bearing structure or
detail (e.g., liner, bearing race, cage, etc.) combined with
a specific seal, subclass 482 for a radial antifriction
bearing having a relatively rotatable, radially extending,
sealing face member (e.g., face, mechanical, etc.) made of a
resilient sliding surface material.
Subclass:
405
Ceramic:
This subclass is indented under subclass 404. Particular
material wherein the composition or substance is a fired,
clay-containing composition (e.g., porcelain, earthenware,
etc.), glass, or refractory composition (e.g., inorganic
oxides, carbides, etc.).
Subclass:
406
Metal:
This subclass is indented under subclass 404. Particular
material wherein the composition or substance is metal.
Subclass:
407
Elastomeric or plastic:
This subclass is indented under subclass 404. Particular
material wherein the composition or substance is a polymeric
material.
Subclass:
408
Introduction, circulation or removal of fluid:
This subclass is indented under subclass 358. Sealing face
member including means to convey a fluid into, within, or out
of the seal face member or one of the relatively movable
parts.
SEE OR SEARCH THIS CLASS, SUBCLASS:
401 for a relatively rotatable, radially extending, sealing
face member (e.g., face, mechanical, etc.) having a means for
fluid passage in its sealing face.
subclasses 512+ for a dynamic, circumferential contact seal
for other than a piston intended to be contained or
compressed by a gland member in a packing box having means to
introduce or direct a fluid.
928 for a seal including means to introduce, circulate, or
remove fluid having a pressure relief or venting feature for
other than a relatively rotatable, radially extending,
sealing face member.
930 for a seal for other than a relatively rotatable,
radially extending, sealing face member including means to
introduce, circulate, or remove fluid having a heating or
cooling feature.
Subclass:
409
Close proximity seal (e.g., contactless, fluent, etc.):
This subclass is indented under subclass 345. Dynamic seal
wherein the sealing means is free of relatively movable
sealing contact against the relatively movable parts and
capable of acting upon or causing sealed or sealing fluid to
oppose the flow of fluid at the joint or juncture between the
relatively movable parts.
(1) Note. This and indented subclasses are for a sealing
means not dependent upon the physical contact between a
sealing member and a relatively movable part to affect
sealing such as abrading or frictional contact that forms a
positive seal at the point of contact.
(2) Note. In a close proximity seal (e.g., contactless,
fluent, etc.), a distance between a sealing member and a part
or another sealing member is not dependent upon rotational
speed between relatively movable parts; whereas in a
hydrodynamic, relatively rotatable, radially extending
sealing face member (e.g., face, mechanical, etc.) the
distance will change when the rotational speed from normal
operation to slower or nonrotational speeds.
SEE OR SEARCH THIS CLASS, SUBCLASS:
subclasses 301+ for a process of dynamic close proximity
sealing (e.g., contactless, fluent, etc.).
subclasses 347+ for diverse and distinct dynamic seals
including a close proximity seal.
590 for this subclass only, a close proximity seal (e.g.,
contactless, fluent, etc.) between fixed parts or having a
fixed relationship against relatively movable parts.
904 for a seal formed by a viscous fluid usually contained
by one or more physical contacting-type seals.
SEE OR SEARCH CLASS:
137, Fluid Handling, residual class for fluid, material
handling process or apparatus; subclasses 248+ for a
liquid seal between relatively movable, valving parts.
417, Pumps, for a general means to move a fluid from one
place to another having an inlet and an outlet, subclass
423.11 for a rotary electric motor and rotary nonexpansible
chamber pump having sealing means therebetween.
Subclass:
410
Magnetic:
This subclass is indented under subclass 409. Close proximity
seal wherein the close proximity seal provides a polar field
to act upon or cause the sealed or sealing fluid to oppose
the flow of fluid.
SEE OR SEARCH THIS CLASS, SUBCLASS:
501 for a dynamic, circumferential contact seal for other
than a piston and a magnetic means to bias the seal.
629 for a static contact seal for other than an internal
combustion engine, or a pipe, conduit, or cable that uses
magnetism.
SEE OR SEARCH CLASS:
252, Compositions, subclass 62.51 for a composition useful
for a magnetic purpose or a process for making the
composition, not provided for elsewhere.
335, Electricity: Magnetically Operated Switches, Magnets,
and Electromagnets; subclasses 209+ for a magnet or an
electromagnet, configured or arranged to perform external
mechanical work but does not include the external mechanical
work.
384, Bearings, for more than nominal bearing structure or
detail (e.g., liner, bearing race, cage, etc.) combined with
a specific seal; subclass 133 for a plain bearing where the
seal is a magnetic fluid barrier.
Subclass:
411
Gap or clearance:
This subclass is indented under subclass 409. Close proximity
seal wherein the close proximity seal provides a throttling
zone to oppose the flow of fluid while being free of
relatively movable sealing contact.
SEE OR SEARCH CLASS:
384, Bearings, for more than nominal bearing structure or
detail (e.g., liner, bearing race, cage, etc.) combined with
a specific seal, subclass 488 for a radial antifriction
bearing where the seal is a radially extending, annular
flange approaching but not contacting a relatively rotating
member to substantially but not completely close an annular
opening.
Subclass:
412
Labyrinth:
This subclass is indented under subclass 411. Gap or
clearance wherein the gap or clearance seal has more than one
throttling zone.
SEE OR SEARCH THIS CLASS, SUBCLASS:
355 for a dynamic, brush seal that may declare or reveal a
labyrinthlike structure.
SEE OR SEARCH CLASS:
384, Bearings, for more than nominal bearing structure or
detail (e.g., liner, bearing race, cage, etc.) combined with
a specific seal, subclass 144 for a plain, radial bearing or
subclass 480 for a radial, antifriction bearing where the
seal is a labyrinth seal.
Subclass:
413
Having adjustable member:
This subclass is indented under subclass 412. Labyrinth
including a repositionable sealing member that allows
alteration of the clearance.
Subclass:
414
Formed by cellular pockets (e.g., honeycomb, etc.):
This subclass is indented under subclass 412. Labyrinth
wherein the labyrinth is axially and circumferentially
adjacent compartments having openings toward the opposing
sealing member or one of the relatively movable parts to
provide the throttling zones.
Subclass:
415
Having wear resistant, abradable or ablative member:
This subclass is indented under subclass 412. Labyrinth
including at least a portion of the labyrinth or one of the
relatively movable parts made of a material to inhibit
deterioration, to promote wear, or to promote burning away.
Subclass:
416
Segmented:
This subclass is indented under subclass 412. Labyrinth
wherein the labyrinth's perimeter is divided into portions.
Subclass:
417
Formed by multiple washers:
This subclass is indented under subclass 412. Labyrinth
wherein the labyrinth is a plurality of substantially flat
rings aligned to provide the throttling zones.
Subclass:
418
Formed by plural grooves or projections on opposing
surfaces:
This subclass is indented under subclass 412. Labyrinth
wherein the labyrinth is a plurality of projections or
grooves on one sealing member oppositely facing an opposing
plurality of projections or grooves on another sealing member
to provided the throttling zones.
Subclass:
419
Interfitting or overlapping:
This subclass is indented under subclass 418. Plural grooves
or projections wherein the groove or projection extend beyond
the inner or outer periphery of the other oppositely facing
projection or groove.
Subclass:
420
And axially oriented:
This subclass is indented under subclass 419. Interfitting or
overlapping wherein the opposing projections or grooves
extend in a direction parallel to an axis of rotation formed
between the relatively movable parts.
Subclass:
421
Having installation, removal, assembly, disassembly or repair
feature:
This subclass is indented under subclass 412. Labyrinth
including means to aid in mounting, extricating,
construction, dismantling or restoration of the seal.
SEE OR SEARCH THIS CLASS, SUBCLASS:
323 for a seal for well apparatus having an installation,
removal, assembly, disassembly, or repair feature.
subclasses 370+ for a relatively rotatable extending
sealing face member (e.g., face, mechanical, etc.) having an
installation, removal, assembly, disassembly, or repair
feature.
435 for a piston ring, piston ring expander, or seat
therefore having an installation, removal, assembly,
disassembly or repair feature.
511 for a dynamic circumferential contact seal intended for
containment or compression by a gland member in a packing box
having an installation, removal, assembly, disassembly, or
repair feature.
551 for a dynamic, peripheral, radially sealing, flexible
projection (e.g., lip seal, etc.) for other than a piston
having an installation, removal, assembly, disassembly, or
repair feature.
598 for a static contact seal for use between parts of an
internal combustion engine having an installation, removal,
assembly, disassembly or repair feature.
609 for a static contact seal intended for insertion between
an end-to-end pipe, conduit, or cable joint having an
installation, removal, assembly, disassembly, or repair
feature.
630 for a static contact seal for other than an internal
combustion engine, or a pipe, conduit, or cable having an
installation, removal, assembly, disassembly, or repair
feature.
SEE OR SEARCH CLASS:
29, Metal Working, for a method of mechanical manufacture or
for apparatus to assemble or disassemble, subclass 402.02
for a method of repairing a seal or element thereof not
provided for elsewhere, or subclasses 700+ for general
apparatus to assemble or disassemble.
Subclass:
422
Floating ring or bushing:
This subclass is indented under subclass 411. Gap or
clearance wherein the gap or clearance includes an annulus or
tubular seal having relative movement at the joint or
juncture and having relative movement free of relatively
movable, sealing contact against the relatively movable
parts.
(1) Note. A floater-type seal has relative motion between
the relatively movable parts it seals between whereas a seal
that accommodates gyratory or oscillatory motion is capable
of sealing relatively movable parts that move angularly or
perpendicularly to its main axis of motion.
SEE OR SEARCH THIS CLASS, SUBCLASS:
305 for a process of using a dynamic close proximity
floating ring or bushing (i.e., contactless).
subclasses 447+ for a floating piston ring seal.
subclasses 579+ for a dynamic, circumferential contact
floating ring or bushing seal for other than a piston.
585 for a dynamic circumferential contacting elongated
sleeve or bushing for other than a piston.
Subclass:
423
Impeller (e.g., slinger, etc.):
This subclass is indented under subclass 409. Close proximity
wherein the close proximity seal provides a rotary motion
transmitting means to direct, deflect, or distribute the
sealed or sealing fluid into opposing the flow of fluid.
SEE OR SEARCH THIS CLASS, SUBCLASS:
400 for a relatively rotatable, radially extending, sealing
face member (e.g., face, mechanical, etc.) providing a
hydrodynamic feature.
SEE OR SEARCH CLASS:
384, Bearings, for more than nominal bearing structure or
detail (e.g., liner, bearing race, cage, etc.) combined with
a specific seal, subclasses 132+ for a plain, radial
bearing where the seal is a barrier of liquid or gas, or
subclass 478 for a radial, antifriction bearing where
centrifugal force loads the seal or a liquid or gas forms a
sealing barrier.
Subclass:
424
Rib or groove on radial extending surface:
This subclass is indented under subclass 423. Impeller seal
wherein the impeller has an axially facing radial surface
having a projection or indentation on the surface to act upon
the sealed or sealing fluid.
Subclass:
425
And static sealing means affected by rotational movement:
This subclass is indented under subclass 423. Impeller seal
including means for sealing between the relatively movable
parts at rest or at a transitional speed below the effective
operation of the impeller.
SEE OR SEARCH THIS CLASS, SUBCLASS:
433 for a dynamic seal where centrifugal force affects
change in displacement, shape, or contact.
400 for a relatively rotatable, radially extending sealing
face member (e.g., face, mechanical, etc.) providing a
hydrodynamic feature.
929 for a seal for other than a dynamic close proximity
impeller seal including a static sealing means affected by
rotational movement where a change in operation or condition
induces additional leakage control.
SEE OR SEARCH CLASS:
384, Bearings, for more than nominal bearing structure or
detail (e.g., liner, bearing race, cage, etc.) combined with
a specific seal, subclasses 135+ for a plain, radial
bearing where centrifugal force moves or holds the seal in
place, or subclass 478 for a radial antifriction bearing
where centrifugal force loads the seal or a liquid or gas
forms a sealing barrier.
Subclass:
426
Actuated by counterweight:
This subclass is indented under subclass 425. Static sealing
means wherein the static sealing means has a weighted means
acted upon by centrifugal force to control the static sealing
means.
Subclass:
427
Forms centrifugal liquid barrier:
This subclass is indented under subclass 423. Impeller seal
for moving or directing the sealed or sealing fluid outwardly
from its rotational axis to create a liquid wall at the joint
or juncture.
SEE OR SEARCH CLASS:
415, Rotary Kinetic Fluid Motors or Pumps, for a means of
guiding or confining (e.g., casing, distributing means, etc.)
a working fluid (i.e., a liquid or gas that contacts or
supports a rotary means that drives or is driven by the
liquid or gas), subclass 109 for a rotating shaft having an
abutment surface imparting motion in a sealing fluid inside a
chamber.
Subclass:
428
Having cup or chamber inside the impeller or another rotating
member:
This subclass is indented under subclass 427. Centrifugal
liquid barrier wherein the impeller or other revolving
component has within an open vessel or cavity.
Subclass:
429
Fluid collector or receiver:
This subclass is indented under subclass 423. Impeller seal
including means to receive fluid from the impeller.
Subclass:
430
Helical groove or thread on axially extending surface:
This subclass is indented under subclass 423. Impeller seal
wherein the impeller has an indent or projection winding
twistlike about its axially extending surface to act upon the
sealed or sealing fluid.
SEE OR SEARCH THIS CLASS, SUBCLASS:
559 for a dynamic, circumferential contact seal for other
than a piston having a peripheral, radially sealing, flexible
projection having a hydrodynamic, sealing feature.
Subclass:
431
Formed by pressurized sealing fluid introduced to form
barrier:
This subclass is indented under subclass 409. Close proximity
seal wherein the joint or juncture has sealing fluid
introduced into at a pressure equal to or greater than the
pressure of the sealed fluid to oppose the flow of the sealed
fluid.
SEE OR SEARCH THIS CLASS, SUBCLASS:
408 for a relatively rotatable, radially extending, sealing
face member (e.g., face, mechanical, etc.) including means to
introduce, circulate, or remove fluid.
subclasses 512+ for a dynamic circumferential contact seal
for other than a piston intended to be contained or
compressed by a gland member in a packing box having means to
introduce or direct a fluid.
926 for a seal for other than a dynamic close proximity seal
(e.g., contactless, fluent, etc.) created by pressurized
sealing fluid introduced to form a barrier having means to
create a fluid pressure equilibrium at a joint or juncture.
927 for a seal for other than a dynamic close proximity seal
(e.g., contactless, fluent, etc.) created by pressurized
sealing fluid introduced to form a barrier having means to
create a fluid pressure different from the sealed fluid
pressure.
SEE OR SEARCH CLASS:
384, Bearings, for more than nominal bearing structure or
detail (e.g., liner, bearing race, cage, etc.) combined with
a specific seal, subclasses 132+ for a plain, radial
bearing where the seal is a barrier of liquid or gas or
subclass 478 for a radial antifriction bearing where
centrifugal force loads the seal or a liquid or gas forms a
sealing barrier.
Subclass:
432
External device or system:
This subclass is indented under subclass 431. Pressurized
sealing fluid including an enclosure for the joint or
juncture and means outside the enclosure to introduce the
pressurized sealing fluid.
SEE OR SEARCH THIS CLASS, SUBCLASS:
513 for a dynamic, circumferential contact seal for other
than a piston intended to be contained or compressed by a
gland member in a packing box having means to introduce or
direct a fluid having an external device or system.
930 for a seal for other than a dynamic close proximity
pressurized sealing fluid barrier including an external
device or system having a heating or cooling feature.
Subclass:
433
Centrifugal force affects change in displacement, shape or
contact:
This subclass is indented under subclass 345. Dynamic seal
wherein the dynamic seal has an inertial force repelling the
sealing means away from its axis of rotation to move, deform,
or alter its engagement to another sealing member or
relatively movable part.
SEE OR SEARCH THIS CLASS, SUBCLASS:
subclasses 425+ for a dynamic, close proximity impeller
(e.g., slinger, etc.) seal having a static sealing means
affected by rotational movement.
929 for a seal for other than a dynamic seal where
centrifugal force affects displacement, shape, or contact
where a change in operation or condition induces additional
leakage control.
SEE OR SEARCH CLASS:
384, Bearings, for more than nominal bearing structure or
detail (e.g., liner, bearing race, cage, etc.) combined with
a specific seal, subclasses 135+ for a plain, radial
bearing where centrifugal force moves or holds the seal in
place or subclass 478 for a radial antifriction bearing where
centrifugal force loads the seal or a liquid or gas forms a
sealing barrier.
Subclass:
434
Piston ring or piston ring expander or seat therefor:
This subclass is indented under subclass 345. Dynamic seal
comprising an annular seal provided for a part (i.e., a
piston) that reciprocates along an axis of an enclosing wall
and the seal is for engaging the wall; means to outwardly
bias the seal against the enclosing wall; or means (e.g., a
seat, etc.) on the part reciprocating along the axis of the
enclosing wall to locate or retain the seal or biasing means
in an operative position.
SEE OR SEARCH THIS CLASS, SUBCLASS:
310 for a process of dynamic sealing employing a piston ring
for an internal combustion engine.
311 for a process of dynamic sealing employing a flexible
ring.
909 for a seal having similar sealing structures for a
piston and rod.
910 for an O-ring seal.
SEE OR SEARCH CLASS:
29, Metal Working, for a method of mechanical manufacture or
apparatus to assemble or disassemble, subclass 888.07 for a
method of piston ring or packing manufacture.
92, Expansible Chamber Devices, subclasses 172+ for more
than nominal detailed structure of a piston except where
limited to detailed structure (e.g., a seat, a fluid
passageway in seat, etc.) solely intended to cooperate with a
piston ring or piston ring expander.
100, Presses, subclass 269.21 for a seal or gasket around a
piston for a fluid actuated reciprocationg press.
188, Brakes, for means of retarding motion of or stopping of
machines; subclass 72.4 for a fluid pressure piston axially
actuating a brake element or housing against a wheel that may
include a seal, or subclass 322.18 for an internal resistance
motion retarder including a thrust component used to vary
volume in a fluid-filled chamber having a particular retarder
component structure with a dynamic sealing ring between a
piston and cylinder.
Subclass:
435
Having installation, removal, assembly, disassembly or repair
feature:
This subclass is indented under subclass 434. Piston ring,
expander, or seat including means to aid in mounting,
extricating, construction, dismantling, or restoration of the
seal.
SEE OR SEARCH THIS CLASS, SUBCLASS:
323 for a seal for well apparatus having an installation,
removal, assembly, disassembly, or repair feature.
subclasses 370+ for a relatively rotatable extending
sealing face member (e.g., face, mechanical, etc.) having an
installation, removal, assembly, disassembly, or repair
feature.
421 for a close proximity labyrinth seal having an
installation, removal, assembly, disassembly, or repair
feature.
511 for a dynamic, circumferential contact seal intended for
containment or compression by a gland member in a packing box
having an installation, removal, assembly, disassembly, or
repair feature.
551 for a dynamic peripheral radially sealing flexible
projection (e.g., lip seal, etc.) for other than a piston
having an installation, removal, assembly, disassembly, or
repair feature.
598 for a static contact seal for use between parts of an
internal combustion engine having an installation, removal,
assembly, disassembly, or repair feature.
609 for a static, contact seal intended for insertion
between an end-to-end pipe, conduit, or cable joint having an
installation, removal, assembly, disassembly, or repair
feature.
630 for a static, contact seal for other than an internal
combustion engine, or a pipe, conduit, or cable having an
installation, removal, assembly, disassembly, or repair
feature.
SEE OR SEARCH CLASS:
29, Metal Working, for a method of mechanical manufacture or
apparatus to assemble or disassemble, subclasses 222+ for
an apparatus to insert or remove a piston ring, or subclass
402.02 for a method of repairing a seal or element thereof
not provided for elsewhere.
Subclass:
436
Piston ring having peripheral radially sealing flexible
projection (e.g., piston cup, etc.):
This subclass is indented under subclass 434. Piston ring
including a pliant or resilient extension having a tip for
relative reciprocating contact against the enclosing wall.
SEE OR SEARCH THIS CLASS, SUBCLASS:
309 for a process of dynamic sealing employing a peripheral,
radially sealing, flexible projection (e.g., lip seal, piston
cup, etc.).
subclasses 549+ for a dynamic circumferential contact seal
for other than a piston having a peripheral, radially
sealing, flexible projection (e.g., lip seal, etc.).
Subclass:
437
Having particular mounting, retaining or supporting feature:
This subclass is indented under subclass 436. Peripherally,
radially sealing, flexible projection including specific
means to fasten, secure, or back the piston ring on the
piston.
Subclass:
438
Having C, U, or V cross-sectional profile:
This subclass is indented under subclass 436. Peripherally
radially sealing flexible projection wherein the piston ring
has a C-, U-, or V-shape in a view of a vertical plane
cutting across the piston ring at right angles to one of its
principle horizontal dimensions.
Subclass:
439
Axially facing cup:
This subclass is indented under subclass 438. C, U, or V
cross-sectional profile wherein the C-, U-, or V-shape or
form is radially extending to the reciprocating axis of the
piston.
SEE OR SEARCH THIS CLASS, SUBCLASS:
335 for a seal for well apparatus having an axially facing
cup shape.
Subclass:
440
Piston ring surface of dissimilar material or hardness:
This subclass is indented under subclass 434. Piston ring
including a surface of different material, hardness, or
density from the rest of the piston ring.
SEE OR SEARCH THIS CLASS, SUBCLASS:
569 for a dynamic, circumferential contact seal for other
than a piston having a peripheral radially sealing flexible
extending portion (e.g., lip seal, etc.) including a lining
or insert.
subclasses 935+ for a seal for other than a piston ring
surface made out of a particular material.
Subclass:
441
Insert:
This subclass is indented under subclass 440. Piston ring
wherein the surface of the piston ring has the different
material, hardness, or density pushed into it.
Subclass:
442
Surface coating, plating or impregnation:
This subclass is indented under subclass 440. Piston ring
wherein the use of chemical infusion (e.g., nitriding, etc.)
provides a different material, hardness, or density as a
layer on the surface or near the surface.
Subclass:
443
Nitrided:
This subclass is indented under subclass 442. Piston ring
wherein the chemical infusion of nitrogen increases the
nitrogen content of the surface.
SEE OR SEARCH CLASS:
148, Metal Treatment, subclass 238 for a process of
nitriding using an externally supplied nitrogen source or
subclasses 317+ for a stock product of the nitriding
process.
Subclass:
444
Chromium:
This subclass is indented under subclass 442. Piston ring
wherein the surface has chrome provided as a layer on the
surface or chemically infused near the surface.
SEE OR SEARCH CLASS:
205, Electrolysis: Processes, Compositions Used Therein, and
Methods of Preparing the Compositions; for a process of
making an electrolytic coating not provided for elsewhere,
subclasses 178+ for multiple superposed coatings having at
least one chromium-containing coating, or subclasses 283+ for
a predominately chromium coating.
Subclass:
445
Rotation limiting feature (i.e., anti-rotation):
This subclass is indented under subclass 434. Piston ring,
expander, or seat including means to limit or prevent
relative rotation between any combination of the piston ring,
piston ring expander, or seat, or pluralities of the piston
ring or piston ring expander.
Subclass:
446
Between rings:
This subclass is indented under subclass 445. Piston ring or
piston ring expander wherein the feature to limit rotation
(i.e., antirotation) is between any combination of the piston
ring or piston ring expander, or between any combination of
more than one piston ring or piston ring expander.
SEE OR SEARCH THIS CLASS, SUBCLASS:
490 for a piston ring having sectional structure including a
component ring of eccentric or variable thickness.
Subclass:
447
Floating piston ring:
This subclass is indented under subclass 434. Piston ring
including relative movement to the seat.
SEE OR SEARCH THIS CLASS, SUBCLASS:
305 for a process of using a dynamic close proximity
floating ring or bushing (i.e., contactless).
422 for a dynamic, close proximity floating ring or bushing
(i.e., contactless).
subclasses 579+ for a dynamic, circumferential, contact
floating ring or bushing seal for other than a piston.
Subclass:
448
Material other than metal:
This subclass is indented under subclass 447. Floating piston
ring consisting of a substance different from metal.
SEE OR SEARCH THIS CLASS, SUBCLASS:
468 for a separate particular piston ring expander means
made out of a material other than metal.
Subclass:
449
Particular piston seat:
This subclass is indented under subclass 434. Seat therefor
wherein the part (i.e., a piston) has more than a nominal
groove structure on its cylindrical face to locate or retain
the piston ring or piston ring expander.
(1) Note. The declaration of a groove or opposing sidewalls
connected by an end wall is nominal structure.
Subclass:
450
Helical form:
This subclass is indented under subclass 449. Particular
piston seat wherein the groove is a helix or spiral along the
cylindrical face of the piston and accommodates a similarly
shaped piston ring or piston ring expander.
SEE OR SEARCH THIS CLASS, SUBCLASS:
458 for a piston ring having a single piece noncircular or
multi-turn (e.g., helical, spiral, oblong, elliptical,
polygonal, etc.) shape.
Subclass:
451
Stepped walls:
This subclass is indented under subclass 449. Particular
piston seat wherein the groove has a nonuniform axial width
and walls that are at a right angle to each other.
SEE OR SEARCH THIS CLASS, SUBCLASS:
586 for a dynamic, circumferential contact seal for other
than a piston seated in a groove having stepped walls.
Subclass:
452
Oblique wall:
This subclass is indented under subclass 449. Particular
piston seat wherein the groove has a nonuniform axial width
and a tapered or inclined wall.
SEE OR SEARCH THIS CLASS, SUBCLASS:
587 for a dynamic, circumferential contact seal for other
than a piston seated in a groove having an oblique wall.
Subclass:
453
More than one oblique wall:
This subclass is indented under subclass 452. Oblique wall
wherein the groove has tapered or inclined walls.
Subclass:
454
Having parallel walls:
This subclass is indented under subclass 453. More than one
oblique wall wherein the groove has any tapered or inclined
walls that are parallel to each other.
Subclass:
455
Arcuate wall:
This subclass is indented under subclass 449. Particular
piston seat wherein the groove has a curved wall.
Subclass:
456
Coating, treatment or wall insert:
This subclass is indented under subclass 449. Particular
piston seat wherein the groove has a portion subject to or
formed by a substance, action or material addition.
Subclass:
457
Having passageway for fluid return, pressure relief or
venting:
This subclass is indented under subclass 449. Particular
piston seat wherein the groove has an opening for return of
fluid or for releasing or relieving fluid pressure.
SEE OR SEARCH THIS CLASS, SUBCLASS:
928 for a seal having a pressure relief or venting feature
for other than a piston ring seat including a passageway for
fluid return, pressure relief, or venting.
Subclass:
458
Piston ring having single piece noncircular or multiturn
(e.g., helical, spiral, oblong, elliptical, polygonal, etc.)
shape:
This subclass is indented under subclass 434. Piston ring
wherein the piston ring has a helical or spiral form or shape
other than circular in either a relaxed or stressed state.
SEE OR SEARCH THIS CLASS, SUBCLASS:
450 for a piston groove having a helical form intended to
accommodate a similarly shaped piston ring or piston ring
expander.
Subclass:
459
Piston ring including exposed port, slot, pocket, groove,
channel, recess, or bevel:
This subclass is indented under subclass 434. Piston ring
including an uncovered opening, incline, removed, or indented
portion on an outer peripheral surface of the piston ring.
(1) Note. The enclosing wall or piston can cover the
exposed or passageway, slot, pocket, groove, channel, recess,
or bevel but not another ring or expander.
(2) Note. An expander or spacer for spacing one or more
separate piston rings is not a piston ring even if it
directly engages the enclosing wall.
SEE OR SEARCH THIS CLASS, SUBCLASS:
subclasses 477+ for a particular piston ring expander
having a slotted or undulating circular band having an
inclined or axially facing seat for the piston ring.
484 for a piston ring expander having a radially extending
tongue formed from it.
Subclass:
460
Circumferential groove, channel, recess, or bevel:
This subclass is indented under subclass 459. Piston ring
wherein the groove, channel, recess, or bevel extends
substantially annularly about the outer peripheral surface of
the piston ring.
Subclass:
461
Axially spaced:
This subclass is indented under subclass 460. Piston ring
wherein the annular groove, channel, recess or bevel has
another annular groove, channel, recess, or bevel spaced
axially from it.
Subclass:
462
Ports:
This subclass is indented under subclass 461. Axially spaced
wherein the piston ring has through holes.
(1) Note. A "port" or "through hole" is a passageway
extending through the ring and totally enclosed by the
material of the ring.
SEE OR SEARCH THIS CLASS, SUBCLASS:
463 for a piston ring having an exposed circumferential
groove, channel, recess, or bevel, and ports.
464 for a piston ring having an exposed port, slot, pocket,
groove, channel, recess, or bevel and circumferentially
spaced ports.
Subclass:
463
Ports:
This subclass is indented under subclass 460. Piston ring
wherein the piston ring has through holes.
(1) Note. A "port" or "through hole" is a passageway
extending through the ring and totally enclosed by the
material of the ring.
SEE OR SEARCH THIS CLASS, SUBCLASS:
462 for a piston ring having exposed axially spaced
circumferential grooves, channels, recesses or bevels, and
ports.
464 for a piston ring having an exposed port, slot, pocket,
groove, channel, recess, or bevel and circumferentially
spaced ports.
Subclass:
464
Circumferentially spaced ports:
This subclass is indented under subclass 459. Piston ring
wherein the piston ring has annularly spaced through holes.
(1) Note. A "port" or "through hole" is a passageway
extending through the ring and totally enclosed by the
material of the ring.
SEE OR SEARCH THIS CLASS, SUBCLASS:
462 for a piston ring having exposed axially spaced
circumferential grooves, channels, recesses or bevels and
ports.
463 for a piston ring having an exposed circumferential
groove, channel, recess or bevel, and ports.
Subclass:
465
Circumferentially spaced slots, pockets, grooves, channels,
recesses, or bevels:
This subclass is indented under subclass 459. Piston ring
wherein the piston ring has annularly spaced pockets,
grooves, channels, recesses, or bevels.
Subclass:
466
Piston ring displays twisting or torsion:
This subclass is indented under subclass 434. Piston ring
wherein the piston ring's configuration exhibits a rotating
or cocking movement during the reciprocating operation of the
piston.
Subclass:
467
Particular piston ring expander:
This subclass is indented under subclass 434. Piston ring
expander wherein the piston ring has inherent specific
biasing means or a separate specific biasing means to
outwardly bias the piston ring against the enclosing wall.
(1) Note. Do speculate on the resilient nature of the ring.
There must be some indication of this resilient nature by a
ring being defined as resilient or expansible, or by a
structure causing expansion (e.g., wedging surfaces forcing a
ring outwardly, etc.).
SEE OR SEARCH THIS CLASS, SUBCLASS:
subclasses 447+ for expansion means created by the relative
movement of a floating piston ring in its groove.
Subclass:
468
Separate and other than metal:
This subclass is indented under subclass 467. Particular
piston ring expander wherein the biasing means is distinct
from the piston ring and made out of a material that differs
from metal.
Subclass:
469
Bias limiting feature:
This subclass is indented under subclass 467. Particular
piston ring expander including means to restrict the extent
of radial expansion.
SEE OR SEARCH THIS CLASS, SUBCLASS:
subclasses 445+ for a piston ring or piston ring expander
or seat therefor having a feature to limit rotation between
any combination of piston ring, piston ring expander or seat,
pluralities of the piston ring, or piston ring expander.
subclasses 494+ for a piston ring having a gap and a
separate bridging piece for the gap.
subclasses 496+ for a single piece split piston ring having
opposed asymmetrical mirrored ends.
subclasses 498+ for a single piece split piston ring having
other than opposed asymmetrical mirrored ends.
Subclass:
470
Adjustable loading feature:
This subclass is indented under subclass 467. Particular
piston ring expander including means to alter the force
exerted by the piston ring expander.
Subclass:
471
Thermal expansion feature:
This subclass is indented under subclass 467. Particular
piston ring expander wherein the piston ring expander is
responsive to heat.
SEE OR SEARCH THIS CLASS, SUBCLASS:
subclasses 931+ for a seal for other than a piston ring
expander including a temperature responsive feature having a
temperature responsive feature.
Subclass:
472
Annular expander nested in annular groove of the piston
ring:
This subclass is indented under subclass 467. Particular
piston ring expander wherein the piston ring expander is
annular and intended to be at least partially received by the
piston ring having an annular recess of any cross-sectional
shape (e.g., tapered, etc.) that will partially receive the
annular piston ring expander.
Subclass:
473
Between piston rings:
This subclass is indented under subclass 472. Particular
annular piston ring expander wherein the piston ring expander
nests in annular grooves formed between piston rings.
Subclass:
474
And contacting surfaces therebetween are complementary:
This subclass is indented under subclass 472. Particular
annular piston ring expander wherein the piston ring expander
provides an annular surface complementary to the opposing
annular recess surface of the piston ring.
Subclass:
475
Having more than one pair of such surfaces:
This subclass is indented under subclass 474. Contacting
surfaces therebetween are complementary wherein the piston
ring expander provides complementary surfaces for opposing
annular recess surfaces of the piston ring.
Subclass:
476
Inclined or beveled groove contacting expander having
dissimilar contour:
This subclass is indented under subclass 472. Particular
annular piston ring expander provides an annular surface
having a profile other than a slanting or sloping surface of
the annular recess of the piston ring.
Subclass:
477
Slotted or undulating circular band including inclined or
axially facing seat for the piston ring:
This subclass is indented under subclass 467. Particular
piston ring expander wherein the piston ring expander is a
resilient annular band having openings therein or having a
wavy or corrugated contour, and a radially extending surface
intended to space, position, retain, or bias a separate and
distinct piston ring.
SEE OR SEARCH THIS CLASS, SUBCLASS:
subclasses 459+ for a piston ring having an exposed port,
slot, pocket, groove, channel, recess, or bevel
485 for a piston ring expander having an undulating
structure providing an axially extending face against the
inner periphery of the piston ring.
Subclass:
478
Axially spaced axially facing seats:
This subclass is indented under subclass 477. Particular
piston ring expander wherein the piston ring expander has
more than one radially extending surface intended to space,
position, retain, or bias separate and distinct piston rings
along the piston's reciprocating axis.
Subclass:
479
Circular band having radially displaced undulations:
This subclass is indented under subclass 478. Axially spaced,
axially facing seats wherein the annular band has a wavy or
sinuous structure parallel to the piston's reciprocating
axis.
Subclass:
480
Circular band having axially displaced undulations:
This subclass is indented under subclass 478. Axially spaced,
axially facing seats wherein the annular band has a wavy or
sinuous structure radially perpendicular to the piston's
reciprocating axis.
Subclass:
481
U-shaped circular band radially directed either inwardly or
outwardly through out its circumference:
This subclass is indented under subclass 478. Axially spaced,
axially facing seats wherein the annular band has a
channel-shaped cross-section oriented radially in either an
inward or outward facing direction throughout its perimeter.
(1) Note. The U- or channel-shaped structure does not have
to be continuous or unbroken throughout its circumference.
Subclass:
482
Circumferentially spaced separately seated radially acting
bias feature:
This subclass is indented under subclass 467. Particular
piston ring expander wherein the piston ring expander has
peripherally spread apart, individually positioned, resilient
members acting in a direction perpendicular to the piston's
axis of reciprocation.
Subclass:
483
Disposed in socket or about pin:
This subclass is indented under subclass 482. Particular
piston ring expander wherein the radially acting bias members
are received and held in circumferentially spaced hollows of
or arranged about circumferentially spaced projections.
Subclass:
484
Radially extending tongue formed from expander:
This subclass is indented under subclass 467. Particular
piston ring expander wherein the piston ring expander has a
radially inward or outward resilient biasing projection
fabricated from the piston ring expander.
Subclass:
485
Undulating periphery providing axially extending face against
inner perimeter of the piston ring:
This subclass is indented under subclass 467. Particular
piston ring expander wherein the piston ring expander
provides a circumferential, radial facing, wavy, or
corrugated structure against an opposing inside circumference
of the piston ring.
SEE OR SEARCH THIS CLASS, SUBCLASS:
subclasses 477+ for a particular piston ring expander,
having a slotted or undulating circular band, having an
inclined or axially facing seat for the piston ring.
Subclass:
486
Bias feature adjoining opposed ends of split or segmented
piston ring:
This subclass is indented under subclass 467. Particular
piston ring expander wherein the piston ring expander is
contacting or near a piston ring divided into portions
forming facing ends along its perimeter.
SEE OR SEARCH THIS CLASS, SUBCLASS:
487 for a segmented piston ring expander.
493 for a segmented piston ring.
Subclass:
487
Segmented:
This subclass is indented under subclass 467. Particular
piston ring expander wherein the piston ring expander's
perimeter is divided into portions.
SEE OR SEARCH THIS CLASS, SUBCLASS:
486 for a piston ring expander adjoining opposed ends of a
split or segmented piston ring.
493 for a segmented piston ring.
Subclass:
488
For axially adjacent piston rings:
This subclass is indented under subclass 467. Particular
piston ring expander wherein the piston ring expander engages
piston rings that adjoin each other along their radially
extending circumferences.
(1) Note. The ring may be separate or may be part of a
unitary, overlapping structure forming a helix.
SEE OR SEARCH THIS CLASS, SUBCLASS:
subclasses 489+ for a piston ring having sectional
structure.
Subclass:
489
Sectional piston ring structure:
This subclass is indented under subclass 434. Piston ring
consisting of more than one component.
(1) Note. A piston ring placed as an original should have
more than nominal structure before crossing in this and
indented subclasses.
SEE OR SEARCH THIS CLASS, SUBCLASS:
446 for a piston ring or piston ring expander having means
to limit rotation between another piston ring or piston ring
expander.
488 for a piston ring expander engaging axially adjacent
piston rings.
548 for a dynamic, segmented ring circumferentially
contacting seal for other than piston having complementary
interfitting adjoining rings.
Subclass:
490
Eccentric or variable thickness component ring:
This subclass is indented under subclass 489. Sectional
piston ring wherein the component has a radial periphery of
changing radius or an axial periphery of changing thickness.
(1) Note. The shape of the sectional piston ring formed by
the component rings can be eccentric or concentric or of
uniform or variable thickness.
SEE OR SEARCH THIS CLASS, SUBCLASS:
458 for a piston ring having a single piece, noncircular, or
multiturn (e.g., helical, spiral, oblong, elliptical,
polygonal, etc.) shape.
Subclass:
491
C, L, T, U, V, or Z cross-sectional profile:
This subclass is indented under subclass 489. Sectional
piston ring wherein the component has a C-, L-, T-, U-, V-,
or Z-shape in a view of a vertical plane cutting across the
component ring at right angles to one of its principal
horizontal dimensions.
SEE OR SEARCH THIS CLASS, SUBCLASS:
530 for a dynamic, circumferential, contact seal for other
than a piston intended to be contained or compressed by a
gland member in a packing box having a C, M, U, V, X, or Z
cross-sectional seal shape.
Subclass:
492
Three or more sections:
This subclass is indented under subclass 491. Sectional
piston ring wherein the sectional piston ring has at least
three component rings.
Subclass:
493
Segmented piston ring:
This subclass is indented under subclass 434. Piston ring
wherein the piston ring's perimeter is divided into
portions.
SEE OR SEARCH THIS CLASS, SUBCLASS:
486 for a piston ring expander adjoining opposed ends of a
split or segmented piston ring.
487 for a segmented, piston ring expander.
subclasses 543+ for a dynamic, segmented ring
circumferentially contacting seal for other than a piston.
Subclass:
494
Separate bridging piece for gap in piston ring:
This subclass is indented under subclass 434. Piston ring
wherein the piston ring includes a break providing opposed
ends and a means separate from the piston ring for closing
the gap therebetween or for connecting the ends together.
SEE OR SEARCH THIS CLASS, SUBCLASS:
486 for a piston ring expander adjoining opposed ends of a
split or segmented piston ring.
subclasses 546+ for a dynamic, segmented ring
circumferentially contacting seal for other than a piston
having a particular end structure.
631 for a static, contact seal for other than an internal
combustion engine, or a pipe, conduit, or cable having a
split including end joining structure.
Subclass:
495
Secured to end:
This subclass is indented under subclass 494. Bridging piece
wherein the bridging piece fastens to one or both of the
opposing ends.
Subclass:
496
Split single piece piston ring having opposed asymmetrical
mirrored ends:
This subclass is indented under subclass 434. Piston ring
wherein the piston ring is an annulus including only a gap
providing opposed ends that are of substantially identical
shape having opposite orientation.
SEE OR SEARCH THIS CLASS, SUBCLASS:
subclasses 546+ for a dynamic segmented ring
circumferentially contacting seal for other than a piston
having a particular end structure.
631 for a static contact seal for other than an internal
combustion engine, or a pipe, conduit, or cable having a
split including end joining structure.
Subclass:
497
Arcuate or beveled mating surfaces:
This subclass is indented under subclass 496. Single piece
split piston ring wherein the opposed asymmetrical mirrored
ends are complementary curved or angular engaging surfaces.
Subclass:
498
Split single piece piston ring having other than opposed
asymmetrical mirrored ends:
This subclass is indented under subclass 434. Piston ring
wherein the piston ring is an annulus including only a gap
providing opposed ends that are of substantially dissimilar
shape even when considering opposite orientation.
SEE OR SEARCH THIS CLASS, SUBCLASS:
subclasses 546+ for a dynamic, segmented ring
circumferentially contacting seal for other than a piston
having a particular end structure.
631 for a static contact seal for other than an internal
combustion engine, or a pipe, conduit, or cable having a
split including end joining structure.
Subclass:
499
Arcuate or beveled mating surfaces:
This subclass is indented under subclass 498. Split single
piece piston ring wherein the opposed ends have curved or
angular engaging surfaces.
Subclass:
500
Circumferential contact seal for other than piston:
This subclass is indented under subclass 345. Dynamic seal
wherein the seal has a radial peripheral surface contact
against one or more of the relatively movable parts and for
other than a part (i.e., a piston) that reciprocates along an
axis to an enclosing wall and where the seal is for engaging
the wall.
SEE OR SEARCH THIS CLASS, SUBCLASS:
311 for a process of dynamic sealing employing a flexible
ring.
354 for a dynamic seal for a helically threaded part.
907 for a passageway in a rod or shaft.
908 for a seal for use in a rotating and reciprocating
arrangement.
909 for a seal having similar sealing structures for a
piston and rod.
910 for an O-ring seal.
SEE OR SEARCH CLASS:
92, Expansible Chamber Devices, subclass 168 for a
nonmetallic seal means between a piston or a part moved by
the piston and a cylinder end portion.
123, Internal-Combustion Engines, subclass 90.37 for a
poppet valve mechanism's lubrication system's seal or shield
that includes those mounted on a valve stem.
175, Boring or Penetrating the Earth, for processes and means
for initially forming or radially enlarging an elongated hole
in the earth in situ, subclass 359 for mutually contacting
cutter supports that are circumferentially displaced axes for
a rolling cutter bit or rolling cutter bit element with seal
details, or subclass 371 for a rolling cutter bit or rolling
cutter bit element with seal details.
188, Brakes, for means of retarding motion of or stopping of
machines; subclass 322.17 for an internal resistance motion
retarder including a thrust component used to vary volume in
a fluid-filled chamber having a particular retarder component
structure with a dynamic sealing ring or flexible boot
between a piston rod and cylinder.
241, Solid Material Comminution or Disintegration, subclass
216 for cooperating comminuting surfaces having a gyratory
member that includes rotary motion and means to seal the
comminuting zone from a drive or other moving parts.
251, Valves and Valve Actuation, for means to close or
restrict a flow of fluid through a passage by a definite
predetermined motion of the means combined with a seal,
subclass 214 for a valve actuated by a mechanical movement
means and having a particularly associated sealing means for
either.
301, Land Vehicles: Wheels and Axles, for a wheel or axle,
or where they are a dominant feature when combined with other
vehicle structure; subclass 123 for a seal to exclude dirt
or dust from a wheel or axle bearing.
305, Wheel Substitutes for Land Vehicles, subclasses 100+
for a flexible track joint structure (e.g., pin, link, etc.)
including a seal, deflector, or scraper.
384, Bearings, for more than nominal bearing structure or
detail (e.g., liner, bearing race, cage, etc.) combined with
a specific seal, subclasses 151+ for a plain radial bearing
where the seal's material is resilient and on the outer area
of the bearing or shaft.
417, Pumps, for a general means to move a fluid from one
place to another having an inlet and an outlet, subclass
423.11 for a rotary electric motor and rotary nonexpansible
chamber pump having sealing means therebetween.
440, Marine Propulsion, for a vessel and a device (e.g.,
propeller, impeller, etc.) other than a sail to move the
vessel through water, subclass 112 for means to mount an
engine within the vessel's hull and sealing means for a
propeller shaft that pierces the hull.
Subclass:
501
And magnetic bias:
This subclass is indented under subclass 500. Dynamic,
circumferential contact seal including a polar field to bias
the seal.
SEE OR SEARCH THIS CLASS, SUBCLASS:
378 for a relatively rotatable, radially extending sealing
face member (e.g., face, mechanical, etc.) including a
magnetic axial bias therefor.
629 for a static contact seal for other than an internal
combustion engine, or a pipe, conduit, or cable that uses
magnetism.
SEE OR SEARCH CLASS:
252, Compositions, subclass 62.51 for a composition useful
for a magnetic purpose or a process for making the
composition, not provided for elsewhere.
335, Electricity: Magnetically Operated Switches, Magnets,
and Electromagnets; subclasses 209+ for a magnet or an
electromagnet, configured or arranged to perform external
mechanical work but does not include the external mechanical
work.
Subclass:
502
For valve stem in internal combustion engine:
This subclass is indented under subclass 500. Dynamic,
circumferential contact seal wherein the seal is at the joint
or juncture between a reciprocating part (i.e., stem of a
valve controls the flow of gas in an internal combustion
engine) and a housing part (i.e., a guide for a valve in an
internal combustion engine).
SEE OR SEARCH CLASS:
123, Internal-Combustion Engines, subclass 188.6 for a seal
in combination with a valve stem of an intake, exhaust or
fuel valve of an internal combustion engine having a
stationary opening (i.e., seat) and moving closure (i.e.,
head).
Subclass:
503
Accommodates gyratory or oscillatory motion:
This subclass is indented under subclass 500. Dynamic,
circumferential contact seal wherein the seal permits angular
or lateral deflection, circular displacement, eccentric
movement, or vibration of one or more of the relatively
movable parts.
(1) Note. A seal that accommodates gyratory or oscillatory
motion is capable of sealing relatively movable parts that
move angularly or perpendicularly to its main axis of motion
whereas a floater type seal has relative motion between the
relatively movable parts it seals.
SEE OR SEARCH THIS CLASS, SUBCLASS:
398 for a relatively rotatable, radially extending, sealing
face member (e.g., face, mechanical, etc.) that accommodates
or exhibits eccentric, gyratory, or oscillatory motion.
916 for a seal having vibration dampening means.
Subclass:
504
Flexible connection between seal and another part:
This subclass is indented under subclass 503. Accommodates
gyratory or oscillatory motion wherein the seal for use on
one of the relatively movable parts (e.g., shaft, rod, etc.)
includes a compliant link (e.g., flexible sleeve, flexible
boot, flexible diaphragm, etc.) that accommodates oscillatory
or gyratory motion between and secures the seal and the other
of the relatively movable parts (e.g., casing, housing,
etc.).
(1) Note. The seal may be part of and include a stuffing
box.
SEE OR SEARCH THIS CLASS, SUBCLASS:
315 for a process of static sealing employing a flexible
sleeve, boot, or diaphragm.
389 for a relatively rotatable, radially extending, sealing
face member (e.g., face, mechanical, etc.) including fluid
pressure acting against a bellows or diaphragm to create an
axial bias therefor.
subclasses 391+ for a relatively rotatable, radially
extending, sealing face member (e.g., face, mechanical, etc.)
including a flexible sleeve, boot, or diaphragm to provide a
secondary seal or driving connection therefor.
subclasses 634+ for a static contact flexible sleeve, boot,
or diaphragm seal for other than an internal combustion
engine, or a pipe, conduit, or cable.
SEE OR SEARCH CLASS:
464, Rotary Shafts, Gudgeons, Housings, and Flexible
Couplings for Rotary Shafts, subclasses 173+ for a flexible
boot for a joint to transmit rotary torque.
Subclass:
505
Oscillates perpendicularly to axis of motion:
This subclass is indented under subclass 503. Accommodates
gyratory or oscillatory motion wherein the seal permits
side-to-side deflection of one of the relatively movable
parts at right angles to an axis of movement between the
relatively movable parts.
SEE OR SEARCH THIS CLASS, SUBCLASS:
356 for a dynamic seal for use in a journal box that may
include a seal mounted for lateral movement to an axis of
seal chamber.
Subclass:
506
Arcuate bearing surface:
This subclass is indented under subclass 503. Accommodates
gyratory or oscillatory motion wherein the seal or one of the
relatively movable parts has a curved bearing surface.
Subclass:
507
Partially spherical:
This subclass is indented under subclass 506. Arcuate bearing
surface wherein the arcuate bearing surface is somewhat
circular, ball-like, or round.
SEE OR SEARCH CLASS:
384, Bearings, for more than nominal bearing structure or
detail (e.g., liner, bearing race, cage, etc.) combined with
a specific seal, subclasses 145+ for a plain radial bearing
where the seal conforms to a bearing surface that has a shape
of sphere to permit angular or lateral movement.
403, Joints and Connections, for a joint or connection
structure that goes beyond providing an environment for a
seal; subclasses 135+ for a ball and socket that may have
a seal at the bearing interface.
Subclass:
508
Axially spring biased:
This subclass is indented under subclass 503. Accommodates
gyratory or oscillatory motion including an elastic
contrivance or body to force the seal in a direction along an
axis of motion of the relatively movable parts.
Subclass:
509
Coaxial spring:
This subclass is indented under subclass 508. Axial spring
bias wherein the spring has a symmetrical axis substantially
common to the axis of motion formed by the relatively movable
parts.
Subclass:
510
Contained or compressed by gland member in packing box:
This subclass is indented under subclass 500. Dynamic,
circumferential contact seal wherein the seal is intended for
use in a chamber having an axially opened end to receive the
seal and a member that substantially closes the open end to
retain or squeeze the seal within the chamber while having an
opening for passage for one of the relatively movable parts.
(1) Note. A biasing spring is not a gland or follower.
SEE OR SEARCH THIS CLASS, SUBCLASS:
308 for a process of dynamic sealing employing a seal to be
contained or compressed by a gland member in a packing box.
subclasses 329+ for a seal for well apparatus where the
seal is in a packing box contained or compressed by a gland
member.
396 for a relatively rotatable radially extending sealing
face member (e.g., face, mechanical, etc.) including a
secondary mounting seal consisting of axially compressed
packing.
subclasses 620+ for a static contact seal intended for use
on a pipe, conduit, or cable including a clamping gland.
SEE OR SEARCH CLASS:
384, Bearings, for more than nominal bearing structure or
detail (e.g., liner, bearing race, cage, etc.) combined with
a specific seal, subclass 149 for a plain radial bearing, or
subclass 483 for a radial antifriction bearing having
radially contained seal having an axially acting follower.
Subclass:
511
Having installation, removal, assembly, disassembly or repair
feature:
This subclass is indented under subclass 510. Seal for the
gland and packing box including means to aid in mounting,
extricating, construction, dismantling or restoration of the
seal.
SEE OR SEARCH THIS CLASS, SUBCLASS:
323 for a seal for well apparatus having an installation,
removal, assembly, disassembly, or repair feature.
subclasses 370+ for a relatively rotatable extending
sealing face member (e.g., face, mechanical, etc.) having an
installation, removal, assembly, disassembly, or repair
feature.
435 for a piston ring, piston ring expander or seat
therefore having an installation, removal, assembly,
disassembly, or repair feature.
551 for a dynamic peripheral radially sealing flexible
projection (e.g., lip seal, etc.) for other than a piston
having an installation, removal, assembly, disassembly, or
repair feature.
598 for a static contact seal for use between parts of an
internal combustion engine having an installation, removal,
assembly, disassembly, or repair feature.
609 for a static contact seal intended for insertion between
an end-to-end pipe, conduit, or cable joint having an
installation, removal, assembly, disassembly, or repair
feature.
630 for a static contact seal for other than an internal
combustion engine, or a pipe, conduit, or cable having an
installation, removal, assembly, disassembly, or repair
feature.
SEE OR SEARCH CLASS:
29, Metal Working, for a method of mechanical manufacture or
for apparatus to assemble or disassemble, subclass 402.02
for a method of repairing a seal or element thereof not
provided for elsewhere, or subclasses 700+ for general
apparatus to assemble or disassemble.
Subclass:
512
Fluid introducer or director:
This subclass is indented under subclass 510. Seal for the
gland and packing box wherein the seal, gland or packing box
includes means to convey a fluid into, within or out of the
seal, gland or packing box.
SEE OR SEARCH THIS CLASS, SUBCLASS:
408 for a relatively rotatable, radially extending, sealing
face member (e.g., face, mechanical, etc.) including means to
introduce, circulate, or remove fluid.
subclasses 431+ for a dynamic close proximity seal (e.g.,
contactless, fluent, etc.) created by pressurized sealing
fluid introduced to form a barrier.
918 for a seal for other than dynamic circumferential
contact seal for other than a piston contained or compressed
by a gland member in a packing box having a filter or fluid
separator.
927 for a seal for other than dynamic circumferential
contact seal for other than a piston contained or compressed
by a gland member in a packing box having means to create a
fluid different from the sealed fluid pressure.
SEE OR SEARCH CLASS:
184, Lubrication, for a unitized lubrication means removable
or installable from one machine to on another and intended to
lubricate a bearing part in a machine, subclasses 24+ for a
piston rod lubricator.
Subclass:
513
External device or system:
This subclass is indented under subclass 512. Fluid
introduction or director wherein the means is an apparatus or
organization of apparatuses located outside the packing box.
SEE OR SEARCH THIS CLASS, SUBCLASS:
930 for a seal for other than a dynamic seal to be contained
or compressed by a gland member in a packing box including an
external device or system to introduce or direct a fluid
having a heating or cooling feature.
Subclass:
514
Drain, pressure relief or vent:
This subclass is indented under subclass 512. Fluid
introduction or director including means to direct fluid away
from or for alleviating fluid stress or strain.
SEE OR SEARCH THIS CLASS, SUBCLASS:
928 for a seal having a pressure relief or venting feature
for other than a dynamic circumferential contact seal, for
other than a piston intended to be in a packing box contained
or compressed by a gland member and having a drain, pressure
relief, or vent feature.
SEE OR SEARCH CLASS:
384, Bearings, for more than nominal bearing structure or
detail (e.g., liner, bearing race, cage, etc.) combined with
a specific seal, subclass 479 for a radial antifriction
bearing where the seal establishes a pressure or pressure
responsive means to load the seal.
Subclass:
515
Passage through axial facing surface:
This subclass is indented under subclass 512. Fluid
introduction or director wherein the means is a passageway
that extends from one radially extending surface to another
radial or axial extending surface of the seal, packing box,
or gland.
Subclass:
516
Spacer between seals (e.g., lantern ring, etc.):
This subclass is indented under subclass 512. Fluid
introduction or director wherein the means is a nonsealing
member separating seals.
Subclass:
517
Between packing boxes:
This subclass is indented under subclass 512. Fluid
introduction or director wherein the means is between
chambers.
Subclass:
518
Plural distinct packing boxes:
This subclass is indented under subclass 510. Seal for the
gland and packing box comprising distinguishable sealing
chambers, seals, and glands.
Subclass:
519
Segmented packing box:
This subclass is indented under subclass 510. Seal for the
gland and packing box wherein the chamber is divided into
portions.
Subclass:
520
Particular gland feature:
This subclass is indented under subclass 510. Seal for the
gland and packing box wherein the member that substantially
closes the open end of the packing box while having an
opening for passage for one of the relatively movable parts
has a specific characteristic.
SEE OR SEARCH CLASS:
384, Bearings, for more than nominal bearing structure or
detail (e.g., liner, bearing race, cage, etc.) combined with
a specific seal, subclass 150 for a plain, radial bearing
where mechanical means (e.g., nut, separate resilient
elements, etc.) moves the seal.
Subclass:
521
Segmented:
This subclass is indented under subclass 520. Particular
gland feature wherein the gland is divided into portions.
Subclass:
522
Spring bias:
This subclass is indented under subclass 520. Particular
gland feature including an elastic contrivance or body to
exert force on the gland.
Subclass:
523
Disposed about external bolt or stud:
This subclass is indented under subclass 522. Spring bias
wherein the spring bias surrounds a fastener or projecting
pin located outside the packing box and used to mount the
gland to the packing box.
Subclass:
524
Eye or T-type bolt:
This subclass is indented under subclass 520. Particular
gland feature wherein the gland uses a fastening means
threaded at one and having a hole, loop, or crosspiece at the
other end intended to engage corresponding structure on the
gland or packing box.
Subclass:
525
Internally threaded:
This subclass is indented under subclass 520. Particular
gland feature wherein the gland has a radially inward facing
projecting helical rib intended to fasten the component to
the packing box.
Subclass:
526
Externally threaded:
This subclass is indented under subclass 520. Particular
gland feature wherein the gland has a radially outward facing
projecting helical rib intended to fasten the component to
the packing box.
Subclass:
527
Wear sleeve:
This subclass is indented under subclass 510. Seal for the
gland and packing box including a tubular member mounted on
one of the relatively movable parts intended to protect the
one relatively movable part from deterioration from the
relatively movable surface contact of the seal.
SEE OR SEARCH THIS CLASS, SUBCLASS:
571 for a dynamic, circumferential contacting peripheral
radially sealing flexible projection (e.g., lip seal, etc.)
including a wear sleeve.
Subclass:
528
Helically coiled packing:
Seal for the gland and packing box under subclass510 wherein
the seal has a spirally wound structure between the parts
along their axis of relative motion.
Subclass:
529
Having particular cross-sectional seal profile:
This subclass is indented under subclass 510. Seal for the
gland and packing box wherein the seal has a specific shape
in a view of a vertical plane cutting across the seal at
right angles to one of its principle horizontal dimensions.
SEE OR SEARCH THIS CLASS, SUBCLASS:
490 for a piston ring having sectional structure including a
component ring of eccentric or variable thickness.
548 for a dynamic segmented ring circumferentially
contacting seal for other than piston having complementary
interfitting adjoining rings.
626 for a static contact seal having a particular seal shape
intended for use on a pipe, conduit, or cable.
Subclass:
530
C-, M-, U-, V-, X-, or Z-shaped:
This subclass is indented under subclass 529. Particular
cross-sectional seal profile wherein the profile has a U-,
V-, C-, M-, X-, or Z-configuration.
SEE OR SEARCH THIS CLASS, SUBCLASS:
subclasses 491+ for a piston ring having a sectional
structure including a component ring having a C, L, T, U, V,
or Z cross-sectional profile.
567 for a dynamic circumferential contact seal for other
than a piston having peripherally radially sealing flexible
projections forming a radially facing U or V cross-sectional
profile.
647 for a static seal having a C-, U-, or V-shaped
cross-sectional seal profile for other than an internal
combustion engine, or a pipe, conduit, or cable.
Subclass:
531
Wedging surface:
This subclass is indented under subclass 529. Particular
cross-sectional seal profile wherein the profile includes an
inclined surface to generate a radial bias.
Subclass:
532
Made of elastomer or plastic:
This subclass is indented under subclass 531. Wedging surface
wherein the seal is a rubberlike material.
Subclass:
533
Segmented:
This subclass is indented under subclass 531. Wedging surface
wherein the seal's perimeter is divided into portions.
SEE OR SEARCH THIS CLASS, SUBCLASS:
subclasses 543+ for a dynamic segmented ring
circumferentially contacting seal for other than a piston.
Subclass:
534
Particular seal material or construction:
This subclass is indented under subclass 510. Seal for the
gland and packing box wherein the seal is of a specific
material or has a specific arrangement of material.
SEE OR SEARCH THIS CLASS, SUBCLASS:
subclasses 935+ for a seal for other than a dynamic
circumferential contact seal for other than a piston intended
to be contained or compressed by a gland member in a packing
box made out of a particular material.
Subclass:
535
Composite:
This subclass is indented under subclass 534. Particular
material or construction wherein the material consists of
distinct substances that retain their identities in the
material used to form the seal.
Subclass:
536
Fibrous component:
This subclass is indented under subclass 535. Composite
wherein the composite includes a plurality of slender
filamentlike strands.
Subclass:
537
Braided, woven or twisted:
This subclass is indented under subclass 536. Fibrous
component wherein the fibrous component has an intertwined
structure.
SEE OR SEARCH CLASS:
57, Textiles: Spinning, Twisting, and Twining, for a process
or apparatus for spinning, twisting and twining.
87, Textiles: Braiding, Netting or Lace Making, a process or
apparatus for forming strands or fabrics from yarns,
filaments, or strands by braiding, knotting, or intertwisting
the strands and the corresponding products or fabrics.
139, Textiles: Weaving, for manufacture of fabric by weaving
threads.
Subclass:
538
Distinct sheath or covering:
This subclass is indented under subclass 535. Composite
wherein the composite includes a distinct casing or layer
surrounding at least a major portion of an outer periphery of
the seal.
SEE OR SEARCH THIS CLASS, SUBCLASS:
subclasses 652+ for a static contact seal for other than an
internal combustion engine, or a pipe, conduit, or cable
having a sheath or covering.
Subclass:
539
Graphite:
This subclass is indented under subclass 534. Particular
material or construction wherein the specific substance
forming the seal is graphite.
Subclass:
540
Elastomer or plastic:
This subclass is indented under subclass 534. Particular
material or construction wherein the specific substance
forming the seal is rubberlike.
Subclass:
541
Metal:
This subclass is indented under subclass 534. Particular
material or construction wherein the specific substance
forming the seal is metal.
Subclass:
542
Consisting of loose-fill type packing:
This subclass is indented under subclass 510. Seal for the
gland and packing box wherein the seal is a free unshaped
packing material.
Subclass:
543
Segmented ring:
This subclass is indented under subclass 500. Dynamic,
circumferential contact seal wherein the seal is an annulus
divided across its perimeter into portions.
SEE OR SEARCH THIS CLASS, SUBCLASS:
325 for a segmented and radially actuated (e.g., ram-type,
etc.) seal for a well apparatus overpressure control device
(e.g., seal for a blowout preventer, etc.).
344 for a segmented and radially actuated seal (e.g., oil
saver, gas saver, etc.) for well apparatus.
356 for a dynamic seal for use in a journal box that may
include a segmented seal.
493 for a segmented piston ring.
Subclass:
544
Having pressure balancing or radial bias reduction feature:
This subclass is indented under subclass 543. Segmented ring
including means to equalize fluid pressure forces acting on
the segmented ring or means to generate a radially outwardly
directed force to oppose a radially inwardly directed bias
force.
SEE OR SEARCH THIS CLASS, SUBCLASS:
926 for a seal for other than a dynamic, segmented ring
circumferentially contacting seal for other than a piston
having pressure balancing or radial bias reducing means
having means to create a fluid pressure equilibrium at a
joint or juncture.
SEE OR SEARCH CLASS:
384, Bearings, for more than nominal bearing structure or
detail (e.g., liner, bearing race, cage, etc.) combined with
a specific seal, subclass 131 for a plain radial bearing
where fluid moves the seal, or subclass 479 for a radial
antifriction bearing where the seal establishes a pressure or
pressure responsive means loads the seal.
Subclass:
545
Radial biasing spring element other than nominal garter
spring:
This subclass is indented under subclass 543. Segmented ring
including means other than a nominally set forth coiled wire
spring that encircles the seal around its circumference to
provide a radial bias for the segmented ring.
SEE OR SEARCH THIS CLASS, SUBCLASS:
486 for a piston ring expander adjoining opposed ends of a
split or segmented piston ring.
487 for a segmented, piston ring expander.
533 for a dynamic, segmented, circumferential contact seal
for other than a piston intended to be contained or
compressed by a gland member in a packing box having a
particular cross-sectional shape to provide a wedging
surface.
subclasses 553+ for a dynamic, circumferential, contacting
peripheral, radially sealing, flexible projection (e.g., a
lip seal, etc.) including a bias means other than a nominal
garter spring for other than a piston.
589 for a dynamic, circumferential contact seal for other
than a piston radially backed by resilient or elastomeric
member.
SEE OR SEARCH CLASS:
384, Bearings, for more than nominal bearing structure or
detail (e.g., liner, bearing race, cage, etc.) combined with
a specific seal, subclass 150 for a plain radial bearing
where mechanical means (e.g., nut, separate resilient
elements, etc.) moves the seal.
Subclass:
546
Particular segment end structure:
This subclass is indented under subclass 543. Segmented ring
wherein the segmented ring portions have adjoining edges that
have a specific configuration.
SEE OR SEARCH THIS CLASS, SUBCLASS:
subclasses 494+ for a piston ring having a gap and a
separate bridging piece for the gap.
subclasses 496+ for a single piece split piston ring having
opposed asymmetrical mirrored ends.
subclasses 498+ for a single piece split piston ring having
other than opposed asymmetrical mirrored ends.
631 for a static contact seal for other than an internal
combustion engine, or a pipe, conduit, or cable having a
split including end joining structure.
Subclass:
547
Interfitting projection and recess:
This subclass is indented under subclass 546. Particular
segment end structure wherein the end structure of one of the
segmented ring portions has a protrusion to fit within a
cavity on the end structure or another adjoining segment.
Subclass:
548
Plural complementary interfitting rings:
This subclass is indented under subclass 543. Segmented ring
wherein the segmented ring has one or more adjacent rings
where a portion of a peripheral surface of one the rings
penetrates a corresponding recess on a peripheral surface of
an adjoining ring.
(1) Note. This subclass does not include adjacent rings
having complementary inclined or wedging surfaces.
SEE OR SEARCH THIS CLASS, SUBCLASS:
subclasses 489+ for a piston ring having sectional
structure.
subclasses 529+ for a dynamic, circumferential contact seal
for other than a piston intended to be contained or
compressed by a gland member in a packing box having a
particular cross-sectional seal shape.
Subclass:
549
Peripheral radially sealing flexible projection (e.g., lip
seal, etc.):
This subclass is indented under subclass 500. Dynamic,
circumferential contact seal wherein the seal is a pliant or
resilient extension having a tip for relatively movable
contact to an inner or outer perimeter of one of the
relatively movable parts.
SEE OR SEARCH THIS CLASS, SUBCLASS:
309 for a process of dynamic sealing employing a peripheral
radially sealing flexible projection (e.g., lip seal, piston
cup, etc.).
349 for diverse and distinct dynamic seals including a close
proximity seal (e.g., contactless, fluent, etc.), a
relatively rotatable radially extending sealing face member
(e.g., face, mechanical, etc.) and a circumferential
peripheral radially sealing flexible projection (e.g., lip
seal, etc.).
351 for diverse and distinct dynamic seals including a close
proximity seal (e.g., contactless, fluent, etc.) and a
peripheral radially sealing flexible projection (e.g., lip
seal, etc.).
353 for diverse and distinct dynamic seals including a
relatively rotatable radially extending sealing face member
(e.g., face, mechanical, etc.) and a circumferential
peripheral radially sealing flexible projection (e.g., lip
seal, etc.).
subclasses 394+ for a relatively rotatable radially
extending sealing face member (e.g., face, mechanical, etc.)
including a secondary mounting seal having a peripherally
radially sealing flexible projection (e.g., lip seal, etc.).
402 for a relatively rotatable radially extending sealing
face member (e.g., face, mechanical, etc.) having a flexible
projection (e.g., lip seal, etc.) configuration.
subclasses 436+ for a piston ring having a peripheral
radially sealing flexible projection (e.g., a piston cup,
etc.).
SEE OR SEARCH CLASS:
384, Bearings, for more than nominal bearing structure or
detail (e.g., liner, bearing race, cage, etc.) combined with
a specific seal, subclasses 147+ for a plain radial bearing
where the seal is a peripheral radially sealing flexible
projection extending axially of a center of a seal seat to
contact the relatively moving element to be sealed or
subclasses 484+ for a radial antifriction bearing where the
seal is a peripheral radially sealing flexible projection
contacting a relatively rotating surface parallel to the axis
of rotation.
464, Rotary Shafts, Gudgeons, Housings and Flexible Couplings
for Rotary Shafts, subclass 131 for a drive coupling that
accommodates misaligned or angularly related axes through a
radially directed pin having a particular bearing cup
surrounding the pin end and a flexible seal or subclass 133
for a drive coupling that accommodates misaligned or
angularly related axes through a radially directed pin and a
flexible seal.
Subclass:
550
Made of metal or is a scraper:
This subclass is indented under subclass 549. Peripheral
radially sealing flexible projection wherein the flexible
projection is metal or, dislodges or removes unwanted foreign
material by direct relatively movable contact against one of
the parts.
SEE OR SEARCH CLASS:
384, Bearings, for more than nominal bearing structure or
detail (e.g., liner, bearing race, cage, etc.) combined with
a specific seal, subclass 137 for a plain radial bearing
where the seal has means to remove excess lubricant from the
shaft and return it to a lubricant reservoir or for removing
material from the shaft about to enter the bearing from the
outside.
Subclass:
551
Having installation, removal, assembly, disassembly, or
repair feature:
This subclass is indented under subclass 549. Peripheral
radially sealing flexible projection including means to aid
in mounting, extricating, construction, dismantling or
restoration of the seal.
SEE OR SEARCH THIS CLASS, SUBCLASS:
323 for a seal for well apparatus having an installation,
removal, assembly, disassembly, or repair feature.
subclasses 370+ for a relatively rotatable extending
sealing face member (e.g., face, mechanical, etc.) having an
installation, removal, assembly, disassembly, or repair
feature.
421 for a close proximity labyrinth seal having an
installation, removal, assembly, disassembly, or repair
feature.
435 for a piston ring, piston ring expander, or seat
therefore having an installation, removal, assembly,
disassembly, or repair feature.
subclasses 572+ for a dynamic circumferential contacting
peripheral radially sealing flexible projection (e.g., lip
seal, etc.) including a particular mounting, frame, casing,
or reinforcement feature for other than a piston.
598 for a static contact seal for use between parts of an
internal combustion engine having an installation, removal,
assembly, disassembly, or repair feature.
609 for a static contact seal intended for insertion between
an end to end pipe, conduit or cable joint having an
installation, removal, assembly, disassembly, or repair
feature.
630 for a static contact seal for other than an internal
combustion engine, or a pipe, conduit, or cable having an
installation, removal, assembly, disassembly, or repair
feature.
SEE OR SEARCH CLASS:
29, Metal Working, for a method of mechanical manufacture or
for apparatus to assemble or disassemble, subclass 402.02
for a method of repairing a seal or element thereof not
provided for elsewhere, or subclasses 700+ for general
apparatus to assemble or disassemble.
Subclass:
552
Having pressure relief or venting feature:
This subclass is indented under subclass 549. Peripheral
radially sealing flexible projection including means for
releasing or relieving fluid pressure at the joint or
juncture.
(1) Note. For this subclass a valve for a passageway must
claim or disclose a venting function.
SEE OR SEARCH THIS CLASS, SUBCLASS:
928 for a seal having a pressure relief or venting feature
for other than a dynamic circumferential contact seal for
other than a piston having a peripheral radially sealing
flexible projection including a pressure relief or venting
means.
SEE OR SEARCH CLASS:
384, Bearings, for more than nominal bearing structure or
detail (e.g., liner, bearing race, cage, etc.) combined with
a specific seal, subclass 479 for a radial antifriction
bearing where the seal establishes a pressure or pressure
responsive means loads the seal.
Subclass:
553
Bias feature other than nominal garter spring:
This subclass is indented under subclass 549. Peripheral
radially sealing flexible projection including means other
than a nominally set forth coil wire spring that encircles
the seal around its circumference to provide a radial bias
for the flexible projection.
(1) Note. Dimensional aspects of a garter spring are proper
for this and indented subclasses.
SEE OR SEARCH THIS CLASS, SUBCLASS:
545 for a dynamic, circumferentially contacting segmented
ring for other than a piston having other than a nominal
garter spring as a radial biasing spring element.
589 for a dynamic, circumferential contact seal for other
than a piston radially backed by resilient or elastomeric
member.
SEE OR SEARCH CLASS:
384, Bearings, for more than nominal bearing structure or
detail (e.g., liner, bearing race, cage, etc.) combined with
a specific seal, subclass 148 for a plain radial bearing
where the seal is a peripheral radially sealing flexible
projection including bias means extending axially of a center
of a seal seat to contact the relatively moving element to be
sealed.
Subclass:
554
Embedded spring:
This subclass is indented under subclass 553. Bias for the
flexible projection wherein the flexible projection encloses
the bias feature.
SEE OR SEARCH THIS CLASS, SUBCLASS:
618 for a static, contact seal intended for use on a pipe,
conduit, or cable including an axially related or embedded
coil spring that mounts or retains the seal.
Subclass:
555
Radially extending finger spring:
This subclass is indented under subclass 553. Bias for the
flexible projection wherein the bias is one or more
lengthwise projecting digits oriented along the peripheral
radially sealing flexible projection.
Subclass:
556
Material other than metal:
This subclass is indented under subclass 553. Bias for the
flexible projection consisting of a substance other than
metal.
SEE OR SEARCH THIS CLASS, SUBCLASS:
468 for a particular piston ring expander separate from a
piston ring and other than metal.
Subclass:
557
Axially extending helical or spiral spring:
This subclass is indented under subclass 553. Bias for the
flexible projection wherein the bias feature is a wound wire
formed into a tubular or conical formation about a
longitudinal axis of the flexible projection.
SEE OR SEARCH THIS CLASS, SUBCLASS:
618 for a static contact seal intended for use on a pipe,
conduit, or cable including an axially related or embedded
coil spring that mounts or retains the seal.
Subclass:
558
Particular fluid pressure responsive bias:
This subclass is indented under subclass 553. Bias for the
flexible projection wherein the radial bias includes specific
means to react to a change in fluid pressure to vary the
radial bias.
SEE OR SEARCH THIS CLASS, SUBCLASS:
929 for a seal for other than a dynamic circumferential
contact seal for other than a piston having a fluid pressure
responsive radially biasing means where a change in operation
or condition induces additional leakage control.
Subclass:
559
Hydrodynamic sealing feature:
This subclass is indented under subclass 549. Peripheral,
radially sealing, flexible projection including means to
create a turbulence at the point of relatively movable
contact between the flexible projection and the relatively
movable part.
(1) Note. For this subclass, dust or dirt in a vacuum,
liquid, or gas is considered a fluid.
Subclass:
560
Dimensional aspect of the flexible projection (e.g., angle,
length, radius, thickness, etc.):
This subclass is indented under subclass 549. Peripheral,
radially sealing, flexible projection wherein the flexible
projection has at least a portion of its shape defined
quantitatively (e.g., angle, length, radius, thickness,
etc.).
Subclass:
561
Intermediate flexible bending portion:
This subclass is indented under subclass 549. Peripheral,
radially sealing, flexible projection wherein the flexible
projection has radially opposed ends and has a pliant and
resilient wall structure therebetween intended to provide
greater flexibility.
Subclass:
562
Plural peripheral radially sealing flexible projections:
This subclass is indented under subclass 549. Peripheral,
radially sealing, flexible projection including more than one
peripheral, radially sealing, flexible projection.
SEE OR SEARCH THIS CLASS, SUBCLASS:
612 for a static contact seal intended for insertion between
an end-to-end pipe, conduit, or cable joint having plural
extended projections.
SEE OR SEARCH CLASS:
384, Bearings, for more than nominal bearing structure or
detail (e.g., liner, bearing race, cage, etc.) combined with
a specific seal, subclass 486 for a radial antifriction
bearing where the seal is a peripheral, radially sealing,
flexible projection contacting a relatively rotating surface
parallel to the axis of rotation.
Subclass:
563
Having interposed fluid receiver or director:
This subclass is indented under subclass 562. Plural,
flexible projections including means between the flexible
projections to collect, contain, or guide the fluid.
Subclass:
564
Having insert between the flexible projections:
This subclass is indented under subclass 562. Plural,
flexible projections including a member inset therebetween
intended to bias or reinforce.
(1) Note. Radially facing, U- or V-shaped, sealing rings are
proper for this subclass.
Subclass:
565
On radial facing side of single seal:
This subclass is indented under subclass 562. Plural,
flexible projections wherein the plural, flexible projections
are on an axially extending side of the same seal body.
SEE OR SEARCH THIS CLASS, SUBCLASS:
615 for a static contact seal intended for use on a pipe,
conduit, or cable having axially spaced projections.
subclasses 648+ for a static contact seal for other than an
internal combustion engine, or a pipe, conduit, or cable
having plural projections along a sealing surface.
Subclass:
566
Both radial sides of the single seal (e.g., X-shaped,
Y-shaped, etc.):
This subclass is indented under subclass 565. Radially facing
wherein the seal body has one or more flexible projections on
another axially extending side.
Subclass:
567
Radially facing U or V cross-sectional profile:
This subclass is indented under subclass 565. Radially facing
wherein the flexible projections have a U- or V-profile in a
view of a vertical plane cutting across the seal at right
angles to one of its principle horizontal dimensions
perpendicular to the axis of relative motion formed between
the relative movable parts.
SEE OR SEARCH THIS CLASS, SUBCLASS:
subclasses 491+ for a piston ring having a sectional
structure including a component ring having a C, L, T, U, V,
or Z cross-sectional profile.
530 for a dynamic, circumferential contact seal for other
than a piston intended to be contained or compressed by a
gland member in a packing box having a C, M, U, V, X, or Z
cross-sectional seal shape.
647 for a static seal having a C-, U-, or V-shaped
cross-sectional seal profile for other than an internal
combustion engine, or a pipe, conduit, or cable.
Subclass:
568
Including an excluder or wiper:
This subclass is indented under subclass 565. Radially facing
wherein the flexible projections has one or more projections
to seal against dust or foreign matter.
Subclass:
569
Lining or insert:
This subclass is indented under subclass 549. Peripheral,
radially sealing, flexible projection wherein the flexible
projection includes a material layered on or inset into its
surface.
SEE OR SEARCH THIS CLASS, SUBCLASS:
subclasses 440+ for a piston ring having a surface of
dissimilar material or hardness.
Subclass:
570
Made entirely of fluorocarbon material:
This subclass is indented under subclass 549. Peripheral,
radially sealing, flexible projection wherein the flexible
projection is a fluorocarbon material.
SEE OR SEARCH THIS CLASS, SUBCLASS:
subclasses 945+ for a seal made of an elastomer or plastic
containing fluorine for other than a dynamic, circumferential
contact seal, for other than a piston having a peripheral,
radially sealing, flexible projection made of fluorocarbon
material.
Subclass:
571
Wear sleeve:
This subclass is indented under subclass 549. Peripheral,
radially sealing, flexible projection including a tubular
member mounted on one of the relatively movable parts
intended to protect the one relatively movable part from
deterioration caused by the relatively movable surface
contact of the peripheral radially sealing flexible
projection.
SEE OR SEARCH THIS CLASS, SUBCLASS:
527 for a dynamic, circumferential contact seal for other
than a piston intended to be contained or compressed by a
gland member in a packing box having a wear sleeve.
Subclass:
572
Particular mounting, frame, casing or reinforcement feature:
This subclass is indented under subclass 549. Peripheral
radially sealing flexible projection including a specific
structure, holding, or support means to maintain the flexible
projection in relatively movable sealing contact against one
of the relatively movable parts.
(1) Note. This and indented subclasses include a nominal
recitation of a casing having an additional structural
feature relating the flexible projection to the casing.
SEE OR SEARCH THIS CLASS, SUBCLASS:
subclasses 371+ for a unitized cartridge containing a
relatively rotatable, radially extending, sealing face member
(e.g., face, mechanical, etc.).
551 for a dynamic, peripheral, radially sealing, flexible
projection (e.g., lip seal, etc.) for other than a piston
having an installation, removal, assembly, disassembly, or
repair feature.
Subclass:
573
Peripheral mounting static seal:
This subclass is indented under subclass 572. Mounting,
frame, casing, or reinforcement including a circumferential
static seal between the mounting, frame, casing, or
reinforcement and the part.
Subclass:
574
Protrusion or bead cross-sectional profile:
This subclass is indented under subclass 573. Peripheral
mounting static seal wherein the static seal has a projection
from its surface in a view of a vertical plane cutting across
the static seal at right angles to one of its principle
horizontal dimensions.
Subclass:
575
Secured by molding or bonding:
This subclass is indented under subclass 572. Mounting,
frame, casing, or reinforcement including shaping, forming or
adhering means to affix the flexible projection to the
mounting, frame, casing or reinforcement.
SEE OR SEARCH THIS CLASS, SUBCLASS:
617 for a static contact seal mounted or retained by molding
or casting into a pipe, conduit or cable.
subclasses 922+ for a seal manufactured by bonding or
joining for other than a dynamic circumferential contact seal
for other than a piston having a peripheral, radially
sealing, flexible projection (e.g., lip seal, etc.) secured
by molding or bonding.
924 for a seal manufactured by deformation, material
removal, or molding for other than a dynamic circumferential
contact seal, for other than a piston having a peripheral,
radially sealing, flexible projection (e.g., lip seal, etc.)
secured by molding or bonding.
Subclass:
576
Secured by clamping:
This subclass is indented under subclass 572. Mounting,
frame, casing, or reinforcement wherein the mounting, frame,
casing, or reinforcement has portions of itself brought
together to affix the flexible projection to the mounting,
frame, casing, or reinforcement.
SEE OR SEARCH THIS CLASS, SUBCLASS:
subclasses 922+ for a seal manufactured by bonding or
joining for other than a dynamic circumferential contact seal
for other than a piston having a peripheral radially sealing
flexible projection (e.g., lip seal, etc.) secured by
clamping.
924 for a seal manufactured by deformation, material
removal, or molding for other than a dynamic,
circumferential, contact seal for other than a piston having
a peripheral, radially sealing, flexible projection (e.g.,
lip seal, etc.) secured by clamping.
Subclass:
577
By distinct members:
This subclass is indented under subclass 576. Secured by
clamping wherein the portions are separate components brought
together to make the mounting, frame, casing, or
reinforcement.
Subclass:
578
Having circumferentially adjustable biasing element:
This subclass is indented under subclass 500. Dynamic,
circumferential contact seal including a member extending
circumferentially around the periphery of the seal and
adjustable along its length to radially bias the sealing
means.
SEE OR SEARCH THIS CLASS, SUBCLASS:
470 for a piston ring expander having means to adjust the
load.
SEE OR SEARCH CLASS:
384, Bearings, for more than nominal bearing structure or
detail (e.g., liner, bearing race, cage, etc.) combined with
a specific seal, subclass 150 for a plain, radial bearing
where mechanical means (e.g., nut, separate resilient
elements, etc.) moves the seal.
Subclass:
579
Having floating ring or bushing (i.e., circumferentially
contacting):
This subclass is indented under subclass 500. Dynamic,
circumferential, contact seal wherein the seal is an annular
or tubular seal having relative movement between the
relatively movable parts to oppose the flow of fluid.
(1) Note. A floater-type seal has relative motion between
the relatively movable parts it seals between, whereas a seal
that accommodates gyratory or oscillatory motion is capable
of sealing relatively movable parts that move angularly or
perpendicularly to its main axis of motion.
SEE OR SEARCH THIS CLASS, SUBCLASS:
305 for a process of using a dynamic close proximity
floating ring or bushing (i.e., contactless).
356 for a dynamic seal for use in a journal box that may be
a floating ring or bushing.
422 for a dynamic, close proximity, floating ring or bushing
(i.e., contactless).
subclasses 447+ for a floating, piston ring seal.
585 for a dynamic, circumferential, contacting, elongated
sleeve or bushing for other than a piston.
Subclass:
580
Radially translatable in groove:
This subclass is indented under subclass 579. Floating ring
or bushing wherein the ring or bushing moves perpendicular to
a rotational axis formed between the relatively movable parts
and within a channel on one of the relatively movable parts.
Subclass:
581
And biased:
This subclass is indented under subclass 580. Radially
translatable in a groove and a resilient member to hold or
press the ring or bushing against a surface.
Subclass:
582
Made of elastomer or plastic:
This subclass is indented under subclass 579. Floating ring
or bushing consisting of a resilient, rubberlike material.
SEE OR SEARCH THIS CLASS, SUBCLASS:
subclasses 944+ for a seal made of a particular elastomeric
or plastic material for other than a dynamic,
circumferential, contact seal, for other than a piston having
a floating ring or bushing.
Subclass:
583
Inflatable seal or seal biased by inflatable member:
This subclass is indented under subclass 500. Dynamic,
circumferential, contact seal including a cavity or chamber
within the seal or an associated member expanded by entry of
a pressurized fluid to bias the seal or associated member
against one of the relatively movable parts.
SEE OR SEARCH THIS CLASS, SUBCLASS:
subclasses 331+ for an inflatable packer-type seal for well
apparatus.
605 for a hollow, fluid-filled, or inflatable static contact
seal or an associated member intended for use on a pipe,
conduit, or cable.
646 for a static contact seal having a hollow or
fluid-filled inflatable chamber for other than an internal
combustion engine, or a pipe, conduit, or cable.
Subclass:
584
Extrusion preventing (i.e., anti-extrusion) structure:
This subclass is indented under subclass 500. Dynamic,
circumferential contact seal including means deterring the
seal from being squeezed out of its seated position or
otherwise dislocated.
SEE OR SEARCH THIS CLASS, SUBCLASS:
subclasses 324+ for a seal for well apparatus having an
overpressure control device that may include extrusion
preventing (i.e., anti-extrusion) structure.
611 for a static, contact seal intended for insertion
between an end-to-end pipe, conduit, or cable joint having an
extrusion preventing (i.e., anti-extrusion) or compression
limiting feature.
subclasses 616+ for a static, contact seal intended for use
on a pipe, conduit, or cable having an associated mounting or
retaining means for the seal.
638 for a static, contact seal for other than an internal
combustion engine, or a pipe, conduit, or cable including a
particular extrusion preventing (i.e., anti-extrusion)
mounting or retaining means.
Subclass:
585
Elongated sleeve or bushing:
This subclass is indented under subclass 500. Dynamic
circumferential contact seal wherein the seal has a somewhat
elongated, tubular shape intended to guide an inner,
relatively movable part.
SEE OR SEARCH THIS CLASS, SUBCLASS:
338 for a longitudinally actuated packing sleeve for well
apparatus.
422 for a dynamic close proximity floating ring or bushing
(i.e., contactless).
subclasses 579+ for a dynamic, circumferential contact,
floating ring or bushing seal for other than a piston.
607 for a sleeve-type, static, contact seal intended for a
pipe, conduit, or cable.
Subclass:
586
Seated in groove having stepped walls:
This subclass is indented under subclass 500. Dynamic,
circumferential, contact seal wherein the seal is in a
channel having nonuniform axial width and walls that are at a
right angle to each other in one of the relatively movable
parts.
SEE OR SEARCH THIS CLASS, SUBCLASS:
451 for a piston groove having stepped walls.
Subclass:
587
Seated in groove having oblique wall:
This subclass is indented under subclass 500. Dynamic,
circumferential, contact seal wherein the seal in a channel
having a nonuniform axial width and a tapered or inclined
wall in one of the relatively movable parts.
SEE OR SEARCH THIS CLASS, SUBCLASS:
subclasses 452+ for a piston groove having an oblique
wall.
Subclass:
589
Radially backed by resilient or elastomeric member:
This subclass is indented under subclass 500. Dynamic,
circumferential, contact seal wherein the seal includes an
elastic element to bias the sealing means in a direction
perpendicular to an axis formed between the relatively
movable parts.
SEE OR SEARCH THIS CLASS, SUBCLASS:
545 for a dynamic, circumferentially contacting, segmented
ring for other than a piston having other than a nominal
garter spring as a radial, biasing, spring element.
subclasses 553+ for a dynamic, circumferential contacting,
peripheral, radially sealing, flexible projection (e.g., a
lip seal, etc.) including a bias means other than a nominal
garter spring for other than a piston.
Subclass:
590
SEAL BETWEEN FIXED PARTS OR STATIC CONTACT AGAINST RELATIVELY
MOVABLE PARTS:
This subclass is indented under the class definition. Sealing
means wherein the seal is at the joint or juncture formed
between stationary parts, or having a stationary sealing
relationship to the relatively movable parts.
(1) Note. Some relative movement is permissible due to such
examples as expansion, contraction, slippage, or variable
pressure load.
SEE OR SEARCH THIS CLASS, SUBCLASS:
subclasses 312+ for a process of static sealing.
subclasses 345+ for a seal between relatively movable parts
(i.e., a dynamic seal).
SEE OR SEARCH CLASS:
215, Bottles and Jars, for a cap-type bottle or jar closure,
subclass 234 for a liquid seal located where the closure
seats on the bottle or jar.
220, Receptacles, for a receptacle having an access opening
and a removable closure for the opening and means to seal the
juncture therebetween, subclass 228 for a liquid or
semi-liquid gasket.
Subclass:
591
Contact seal between parts of internal combustion engine:
This subclass is indented under subclass 590. Static seal
wherein the seal's intended use between and sealingly
touching against adjacent components of an internal
combustion engine.
SEE OR SEARCH THIS CLASS, SUBCLASS:
313 for a process of static sealing between parts of an
internal combustion engine.
Subclass:
592
Particular coating or layer of sealing material:
This subclass is indented under subclass 591. Intended for
internal combustion engine including a film or sheet of a
specific composition or configuration to form a seal against
an adjacent seal member or one of the components of the
internal combustion engine.
SEE OR SEARCH THIS CLASS, SUBCLASS:
654 for a static contact seal for other than an internal
combustion engine, or a pipe, conduit, or cable having a
particular sealing material or construction using plural
layers.
Subclass:
593
Having compression limiting feature:
This subclass is indented under subclass 591. Intended for
internal combustion engine including means to restrict seal
compaction between the parts.
SEE OR SEARCH THIS CLASS, SUBCLASS:
611 for a static, contact seal intended for insertion
between an end-to-end pipe, conduit, or cable joint having an
extrusion preventing (i.e., anti-extrusion) or compression
limiting feature.
639 for a static seal for other than an internal combustion
engine, or a pipe, conduit, or cable having a particular
mounting or retaining means such as a compression limiting
means.
Subclass:
594
Particular dimensions or configuration of sealing bead or
formation:
This subclass is indented under subclass 591. Intended for
internal combustion engine including an embossment or other
structure having a specific size or shape for forming a seal
between an adjacent sealing member or one of the components
of the internal combustion engine.
Subclass:
595
Metallic:
This subclass is indented under subclass 594. Sealing bead or
formation wherein the sealing bead or formation is metal.
Subclass:
596
Elastomeric:
This subclass is indented under subclass 594. Sealing bead or
formation wherein the sealing bead or formation is a
rubberlike material.
Subclass:
597
Heat dissipating, cooling or insulating feature:
This subclass is indented under subclass 591. Intended for
internal combustion engine including means to conduct and
dissipate thermal energy, or shield the seal or one of the
components of the internal combustion engine from thermal
energy.
SEE OR SEARCH THIS CLASS, SUBCLASS:
930 for a seal for other than a static seal for use between
parts of an internal combustion engine including a heat
dissipation, cooling, or insulating feature having a heating
or cooling feature.
Subclass:
598
Having installation, removal, assembly, disassembly or repair
feature:
This subclass is indented under subclass 591. Intended for
internal combustion engine including means to aid in
mounting, extricating, construction, dismantling, or
restoration of the seal.
SEE OR SEARCH THIS CLASS, SUBCLASS:
323 for a seal for well apparatus having an installation,
removal, assembly, disassembly, or repair feature.
subclasses 370+ for a relatively rotatable, extending
sealing face member (e.g., face, mechanical, etc.) having an
installation, removal, assembly, disassembly, or repair
feature.
421 for a close proximity labyrinth seal having an
installation, removal, assembly, disassembly, or repair
feature.
435 for a piston ring, piston ring expander, or seat
therefore having an installation, removal, assembly,
disassembly, or repair feature.
551 for a dynamic, peripheral, radially sealing, flexible
projection (e.g., lip seal, etc.) for other than a piston
having an installation, removal, assembly, disassembly, or
repair feature.
609 for a static, contact seal intended for insertion
between an end-to-end pipe, conduit, or cable joint having an
installation, removal, assembly, disassembly, or repair
feature.
630 for a static contact seal for other than an internal
combustion engine or a pipe, conduit, or cable having an
installation, removal, assembly, disassembly, or repair
feature.
SEE OR SEARCH CLASS:
29, Metal Working, for a method of mechanical manufacture or
for apparatus to assemble or disassemble, subclass 402.02
for a method of repairing a seal or element thereof not
provided for elsewhere or subclasses 700+ for general
apparatus to assemble or disassemble.
Subclass:
599
Having flow restrictor:
This subclass is indented under subclass 591. Intended for
internal combustion engine including an opening for alignment
to an opening for flow in the adjacent engine components
where the seal opening has means to reduce or eliminate flow
of fluid therethrough.
Subclass:
600
Covering member or eyelet for opening:
This subclass is indented under subclass 591. Intended for
internal combustion engine including an opening and means to
envelop an edge of the opening.
Subclass:
601
Covering fire ring or sealing formation:
This subclass is indented under subclass 600. Covering member
or eyelet wherein the covering member or eyelet is for the
opening provided for a combustion chamber of the internal
combustion engine.
Subclass:
602
Contact seal for a pipe, conduit, or cable:
This subclass is indented under subclass 590. Static seal
wherein the seal sealingly touches against and is intended
for an extended hollow or electrically insulated conductor
part to seal the joint or juncture between concentric
extended hollow or electrically insulated conductor parts;
the extended hollow or electrically insulated part's end, and
another extended hollow or electrically insulated conductor
part's end; or the extended hollow part or electrically
insulated conductor and a wall.
SEE OR SEARCH THIS CLASS, SUBCLASS:
314 for a process of static sealing intended for use on a
pipe, conduit, or cable.
SEE OR SEARCH CLASS:
285, Pipe Joints or Couplings, for means to secure in
end-to-end or side-to-side relationship a pipe to another
pipe, a plate, a wall, a receptacle, or other base where the
means are independent from a seal (i.e., more than the
frictional engagement of the seal secures a pipe end to
another part) or a sleeve securing the pipe ends or another
part; subclasses 95+ for a seal responsive to line
pressure or means to test the seal by using line pressure,
especially subclass 97 for a seal having an inflatable member
having an external pressure supply; subclass 187 for
temperature responsive means to maintain a good seal for
expansion or contraction in the pipe coupling; or subclasses
335+ for a seal combined with the pipe joint or coupling.
439, Electrical Connectors, for a generic electrical
connection between at least two conducting elements
permitting relative motion or where the connection is a
readily made or broken type, subclasses 271+ for a sealing
element or material for cooperation with the coupled
connector (e.g., gasket, etc.) or subclass 559 for a seal to
a coupling part that extends into a panel opening.
Subclass:
603
Plural interfitting seal members for installation on the
individual joined pipes, conduits, or cables:
This subclass is indented under subclass 602. Pipe, conduit,
or cable wherein the seal comprises cooperating sealing
members and at least one member is for location on each pipe,
conduit, or cable of the joint or juncture.
Subclass:
604
Allows rolling or folding:
This subclass is indented under subclass 602. Pipe, conduit,
or cable including means permitting at least a part the seal
to rotate or bend completely over on itself.
Subclass:
605
Hollow, fluid filled or inflatable:
This subclass is indented under subclass 602. Pipe, conduit,
or cable wherein the seal or an associated member has a
cavity or chamber that is empty, contains a liquid or gas, or
is expanded by entry of a pressurized fluid.
SEE OR SEARCH THIS CLASS, SUBCLASS:
subclasses 331+ for an inflatable packer-type seal for well
apparatus.
583 for a dynamic, inflatable, or biased by an inflatable
member circumferential contact seal for other than a piston.
subclasses 645+ for a static, contact seal for other than
an internal combustion engine, or a pipe, conduit, or cable
having a particular hollow or filled chamber cross-section.
Subclass:
606
And wall:
This subclass is indented under subclass 602. Pipe, conduit,
or cable wherein the seal is for use between the pipe,
conduit, or cable and the wall.
SEE OR SEARCH CLASS:
174, Electricity: Conductors and Insulators, for an
insulator and specialized apparatus to mount, support,
encase, box, or house an electrical component; subclass 65
for a box or housing structurally limited to electrical use
or including an electrical device that may include a seal
between a cable and the box or housing, or subclasses 152+
for a grommet to insulate a conductor as it extends through a
wall or plate.
Subclass:
607
Sleeve type:
This subclass is indented under subclass 602. Pipe, conduit,
or cable wherein the seal has a tubular or frustoconical
shape.
SEE OR SEARCH THIS CLASS, SUBCLASS:
338 for a longitudinally actuated packing sleeve for well
apparatus.
585 for a dynamic, circumferential, contacting, elongated
sleeve or bushing for other than a piston.
Subclass:
608
Inserted between end-to-end pipe, conduit, or cable joint:
This subclass is indented under subclass 602. Pipe, conduit,
or cable wherein the seal is for use in the joint or juncture
having coaxial radially extending opposing ends.
Subclass:
609
Having installation, removal, assembly, disassembly or repair
feature:
This subclass is indented under subclass 608. End-to-end
joint including means to aid in mounting, extricating,
construction, dismantling, or restoration of the seal.
SEE OR SEARCH THIS CLASS, SUBCLASS:
323 for a seal for well apparatus having an installation,
removal, assembly, disassembly, or repair feature.
subclasses 370+ for a relatively rotatable, extending
sealing face member (e.g., face, mechanical, etc.) having an
installation, removal, assembly, disassembly, or repair
feature.
421 for a close proximity labyrinth seal having an
installation, removal, assembly, disassembly, or repair
feature.
435 for a piston ring, piston ring expander or seat therefor
having an installation, removal, assembly, disassembly, or
repair feature.
551 for a dynamic, peripheral, radially sealing, flexible
projection (e.g., lip seal, etc.) for other than a piston
having an installation, removal, assembly, disassembly, or
repair feature.
598 for a static contact seal for use between parts of an
internal combustion engine having an installation, removal,
assembly, disassembly, or repair feature.
630 for a static contact seal for other than an internal
combustion engine, or a pipe, conduit, or cable having an
installation, removal, assembly, disassembly, or repair
feature.
SEE OR SEARCH CLASS:
29, Metal Working, for a method of mechanical manufacture or
for apparatus to assemble or disassemble, subclass 402.02
for a method of repairing a seal or element thereof not
provided for elsewhere or subclasses 700+ for general
apparatus to assemble or disassemble.
Subclass:
610
Spirally wound structure:
This subclass is indented under subclass 608. End to end
joint wherein the seal has a concentrically coiled
arrangement.
SEE OR SEARCH THIS CLASS, SUBCLASS:
627 for a static contact seal intended for use on a pipe,
conduit or cable having a particular material or
construction.
633 for a static contact seal for other than an internal
combustion engine, or a pipe, conduit or cable having a
spirally wound structure.
Subclass:
611
Extrusion preventing (i.e., anti-extrusion) or compression
limiting feature:
This subclass is indented under subclass 608. End-to-end
joint including means deterring the seal from being squeezed
out of its seated position or otherwise dislocated, or
restricting seal compaction between the parts.
(1) Note. In this subclass the extrusion preventing (i.e.,
anti-extrusion) feature may work by limiting the compression
of the seal or the compression limiting feature may prevent
extrusion.
SEE OR SEARCH THIS CLASS, SUBCLASS:
subclasses 324+ for a seal for well apparatus having an
overpressure control device that may include extrusion
preventing (i.e., anti-extrusion) structure.
584 for a dynamic, circumferential contact seal for other
than a piston having an extrusion preventing (i.e.,
anti-extrusion) structure.
593 for a static, contact seal for use between parts of an
internal combustion engine having a compression limiting
feature.
subclasses 616+ for a static contact seal intended for use
on a pipe, conduit or cable having an associated mounting or
retaining means for the seal.
638 for a static, contact seal for other than an internal
combustion engine, or a pipe, conduit or cable including a
particular extrusion preventing (i.e., anti-extrusion)
mounting or retaining means.
639 for a static seal for other than an internal combustion
engine, or a pipe, conduit or cable including a compression
limiting mounting or retaining feature.
Subclass:
612
Having plural projections:
This subclass is indented under subclass 608. End-to-end
joint wherein the seal includes more than one sealing
extension.
SEE OR SEARCH THIS CLASS, SUBCLASS:
subclasses 562+ for a dynamic, circumferential contact seal
for other than a piston having plural. peripheral, radially
sealing, flexible projections (e.g., lip seal, etc.).
615 for a static contact seal intended for use on a pipe,
conduit, or cable having axially spaced projections.
subclasses 648+ for a static seal for other than an
internal combustion engine, or a pipe, conduit, or cable
having a particular cross-sectional profile such as plural
projections along a sealing surface.
Subclass:
613
Hose coupling:
This subclass is indented under subclass 608. End-to-end
joint wherein the extended hollow is flexible or flaccid.
Subclass:
614
Each end has recess for the seal:
This subclass is indented under subclass 608. End-to-end
joint wherein the ends of the joint include axially facing
indentations for the seal.
SEE OR SEARCH THIS CLASS, SUBCLASS:
625 for a static, contact seal having a particular mounting
or retaining feature for and intended for use on a pipe,
conduit or cable.
643 for static, contact seal for other than an internal
combustion engine, or a pipe, conduit or cable having plural
recesses on parts or seals to form a mounting or retaining
groove.
Subclass:
615
Having axially spaced projections:
This subclass is indented under subclass 602. Pipe, conduit,
or cable including a plurality of pliant or resilient radial
extensions separated by distance along a longitudinal axis of
the pipe, conduit, or cable.
SEE OR SEARCH THIS CLASS, SUBCLASS:
subclasses 565+ for a dynamic, circumferentially contact
seal for other than a piston having plural, peripheral,
radially sealing projections on a radial facing side of a
single seal.
612 for a static, contact seal intended for insertion
between an end-to-end pipe, conduit or cable joint having
plural extended projections.
subclasses 648+ for a static seal for other than an
internal combustion engine or a pipe, conduit, or cable
having a particular cross-sectional profile such as plural
projections along a sealing surface.
Subclass:
616
Having associated mounting or retaining feature:
This subclass is indented under subclass 602. Pipe, conduit,
or cable including related fastening or securing means for
the seal.
SEE OR SEARCH THIS CLASS, SUBCLASS:
subclasses 324+ for a seal for well apparatus having an
overpressure control device that may include extrusion
preventing (i.e., anti-extrusion) structure.
584 for a dynamic, circumferential contact seal for other
than a piston having an extrusion preventing (i.e.,
anti-extrusion) structure.
611 for a static, contact seal intended for insertion
between an end-to-end pipe, conduit, or cable joint having an
extrusion preventing (i.e., anti-extrusion) or compression
limiting feature.
subclasses 637+ for a static, contact seal for other than
an internal combustion engine or a pipe, conduit, or cable
having a particular associated mounting or retaining means.
Subclass:
617
Molded or cast into the pipe, conduit, or cable:
This subclass is indented under subclass 616. Mounting or
retaining feature wherein the pipe, conduit, or cable has the
seal built into it.
SEE OR SEARCH THIS CLASS, SUBCLASS:
575 for a dynamic, circumferential, contacting, peripheral,
radially sealing, flexible projection (e.g., lip seal, etc.)
molded or bonded to a mounting, frame, casing, or
reinforcement for other than a piston.
924 for a seal manufactured by deformation, material
removal, or molding for other than a static pipe, conduit, or
cable.
SEE OR SEARCH CLASS:
264, Plastic and Nonmetallic Article Shaping or Treating:
Processes, subclasses 259+ for a composite article created
by shaping or forming molding material against and uniting to
a preform.
425, Plastic Article Shaping or Earthenware Shaping or
Treating: Apparatus, a generic class for apparatus not
provided for elsewhere to mold a plastic, shape molten
materials where no molding surface is employed, treating a
product made by the apparatus of this class, randomly deposit
and bond particulate material, or a combination of apparatus
of this class with any diverse working or treating apparatus,
Digest 47 for a seal ring.
Subclass:
618
Axially related or embedded coil spring:
This subclass is indented under subclass 616. Mounting or
retaining feature wherein the mounting or retaining feature
is a helically wound annular spring coaxial to or
encapsulated by the seal.
SEE OR SEARCH THIS CLASS, SUBCLASS:
554 for a dynamic, circumferential contact seal for other
than a piston having a peripheral radially sealing projection
biased by an embedded spring.
557 for a dynamic, circumferential contact seal for other
than a piston having a peripheral radially sealing projection
biased by an axially extending helical or spiral spring.
627 for a static, contact seal intended for use on a pipe,
conduit, or cable having a particular material or
construction.
Subclass:
619
Axially related backing ring:
This subclass is indented under subclass 616. Mounting or
retaining feature wherein the mounting or retaining feature
has an annular shape coaxial to the seal providing support.
Subclass:
620
Clamping gland:
This subclass is indented under subclass 619. Axially related
backing ring including axially acting means to force the seal
into a joint or juncture formed between the pipe, conduit, or
cable.
(1) Note. A biasing spring is not a gland or follower.
SEE OR SEARCH THIS CLASS, SUBCLASS:
subclasses 329+ for a seal for well apparatus where the
seal is in a packing box contained or compressed by a gland
member.
subclasses 510+ for a dynamic circumferential contact seal
for other than a piston intended to be contained or
compressed by a gland member in a packing box.
Subclass:
621
Particular axially acting feature:
This subclass is indented under subclass 620. Clamping gland
wherein the gland has a specific means to move the gland
along the axis.
(1) Note. In this subclass and indented subclass the
particular axially acting feature is intended to be more than
a "bolted flange or gland".
Subclass:
622
Threaded gland:
This subclass is indented under subclass 621. Particular,
axially acting feature wherein the gland has a helical rib to
move the gland along the axis.
Subclass:
623
Particular gland shape:
This subclass is indented under subclass 620. Clamping gland
wherein the gland has a specific form.
(1) Note. For this subclass a "segmented gland" must have a
particular joining structure for the segments.
Subclass:
624
And seal secure together:
This subclass is indented under subclass 619. Axially related
backing ring and the seal fasten to each other.
Subclass:
625
Particular and located on the pipe, conduit or cable:
This subclass is indented under subclass 616. Mounting or
retaining feature wherein the extended hollow or electrically
insulated conductor part has a specific means to mount or
retain the seal.
SEE OR SEARCH THIS CLASS, SUBCLASS:
614 for a static, contact seal intended for insertion
between an end-to-end pipe, conduit, or cable joint where
each end has a recess for the seal.
Subclass:
626
Particular seal shape:
This subclass is indented under subclass 602. Pipe, conduit,
or cable wherein the seal has a specific form.
SEE OR SEARCH THIS CLASS, SUBCLASS:
325 for a segmented and radially actuated (e.g., ram-type,
etc.) seal for a well apparatus overpressure control device
(e.g., seal for a blowout preventer, etc.).
344 for a segmented and radially actuated seal (e.g., oil
saver, gas saver, etc.) for well apparatus.
335 for a seal for well apparatus having an axially facing
cup shape.
605 for a hollow, fluid-filled, or inflatable static contact
seal or an associated member intended for use on a pipe,
conduit, or cable.
subclasses 644+ for a static, contact seal for other than
an internal combustion engine, or a pipe, conduit or cable
having a particular cross-sectional seal profile
Subclass:
627
Particular seal material or construction:
This subclass is indented under subclass 602. Pipe, conduit,
or cable wherein the seal is of a specific material or has a
specific arrangement of material.
SEE OR SEARCH THIS CLASS, SUBCLASS:
subclasses 534+ for a dynamic, circumferential contact seal
for other than a piston intended to be contained or
compressed by a gland member in a packing box having a
particular material or construction.
610 for a static, contact seal intended for insertion
between an end to end pipe, conduit or cable joint having a
spirally wound structure.
618 for a static, contact seal intended for use on a pipe,
conduit or cable including an axially related or embedded
coil spring that mounts or retains the seal.
611 for a static, contact seal intended for insertion
between an end to end pipe, conduit or cable joint having an
extrusion preventing (i.e., anti-extrusion) or compression
limiting feature.
subclasses 650+ for a static, contact seal for other than
an internal combustion engine or a pipe, conduit, or cable
having a particular sealing material or construction.
subclasses 935+ for a seal for other than a static contact
seal for a pipe, conduit, or cable made out of a particular
material.
Subclass:
628
Contact seal for other than internal combustion engine, or
pipe, conduit or cable:
This subclass is indented under subclass 590. Static seal
wherein the seal's intended use is to sealingly touches
against a part that is other than an internal combustion
engine, extended hollow or electrically insulated conductor.
SEE OR SEARCH CLASS:
49, Movable or Removable Closures, for more than nominal
movable or removable closure structure (e.g., door jam,
etc.); subclass 475.1 for a seal acting at a juncture of
the closure and an adjacent member.
52, Static Structures (e.g., Buildings), for a site erected
structure or related components (e.g., panels, beams,
columns, etc.), subclasses 140+ for a burial vault having a
separately placeable closure in abutting relation to wall
edges and sealing material retaining construction, subclasses
393+ for a relatively yieldable preformed separator (i.e.,
expansion joint), or subclasses 408+ for a disparate sheet
lamina between exposed surfaces of wall, floor, or roof
(e.g., vapor barrier, waterproofing membrane, etc.).
114, Ships, for marine vehicles and accessories not otherwise
classifiable, subclass 93 that may have a seal for a joint
between a mast and a deck.
210, Liquid Purification or Separation, subclass 450 for a
filter in a flow line or a flow line connected closed casing
having a gasket between the filter and walls of the casing
(e.g., oil filter gasket, etc.).
215, Bottles and Jars, for a cap-type bottle or jar closure,
subclass 45 for neck structure to receive a particular
closure including a seal or subclasses 341+ for a cap-type
closure having an identifiable, integral or separate seal or
liner.
220, Receptacles, for a receptacle having an access opening
and a removable closure for the opening and means to seal the
juncture therebetween, subclass 378 for a gasket or
packing.
222, Dispensing, subclass 542 for a seal provided for a
joint, closure, or flow controller of a dispenser.
251, Valves And Valve Actuation, for means to close or
restrict a flow of fluid through a passage by a definite
predetermined motion of the means combined with a seal,
subclass 257 for a valve actuated by a cam encased in a
valve body having a seal, subclasses 306+ for a rotary
butterfly valve having a seal carried by the valve or a valve
seat, subclasses 314+ for a rotary valve and a seat therefor
or a seal between the rotary valve and the seat, or subclass
318 for a reciprocating valve having a seal made of
nonresilient material on a reciprocating head element or seat
made of a resilient material.
296, Land Vehicles: Bodies and Tops, for a body secured to
the running gear and a top therefor, subclass 93 for
weatherstripping to seal between panels or between a
windshield and the body or top.
376, Induced Nuclear Reactions: Processes, Systems, and
Elements, subclasses 203+ for a seal at a joint or juncture
between and combined with fluid confining structures (e.g., a
nozzle, a vessel cover, etc.) of a nuclear reactor pressure
vessel.
405, Hydraulic and Earth Engineering, subclass 152 for
method or apparatus to form an underground passageway (e.g.,
tunnel, etc.) lined by panels having a seal between adjacent
panels.
445, Electric Lamp or Space Discharge Component or Device
Manufacturing, subclass 25 for a process of display or gas
panel making including a seal not elsewhere classified.
Subclass:
629
Magnetic:
This subclass is indented under subclass 628. Contact seal
for other than wherein the seal has a polar field.
SEE OR SEARCH THIS CLASS, SUBCLASS:
378 for a relatively rotatable, radially extending, sealing
face member (e.g., face, mechanical, etc.) including a
magnetic axial bias therefor.
410 for a dynamic, close proximity seal that uses magnetism
to affect fluid flow.
501 for a dynamic, circumferential contact seal for other
than a piston and a magnetic means to bias the seal.
SEE OR SEARCH CLASS:
49, Movable or Removable Closures, for more than nominal
movable or removable closure structure (e.g., door jam,
etc.), subclass 478.1 for a seal acting at a juncture of the
closure and an adjacent member having a magnetic feature.
252, Compositions, subclass 62.51 for a composition useful
for a magnetic purpose or a process for making the
composition, not provided for elsewhere.
335, Electricity: Magnetically Operated Switches, Magnets,
and Electromagnets; subclasses 209+ for a magnet or an
electromagnet, configured or arranged to perform external
mechanical work but does not include the external mechanical
work.
Subclass:
630
Having installation, removal, assembly, disassembly, or
repair feature:
This subclass is indented under subclass 628. Contact seal
for other than including means to aid in mounting,
extricating, construction, dismantling or restoration of the
seal.
SEE OR SEARCH THIS CLASS, SUBCLASS:
323 for a seal for well apparatus having an installation,
removal, assembly, disassembly, or repair feature.
subclasses 370+ for a relatively rotatable, extending,
sealing face member (e.g., face, mechanical, etc.) having an
installation, removal, assembly, disassembly or repair
feature.
435 for a piston ring, piston ring expander, or seat
therefore having an installation, removal, assembly,
disassembly, or repair feature.
551 for a dynamic, peripheral, radially sealing, flexible
projection (e.g., lip seal, etc.) for other than a piston
having an installation, removal, assembly, disassembly, or
repair feature.
598 for a static, contact seal for use between parts of an
internal combustion engine having an installation, removal,
assembly, disassembly or repair feature.
609 for a static, contact seal intended for insertion
between an end-to-end pipe, conduit, or cable joint having an
installation, removal, assembly, disassembly, or repair
feature.
SEE OR SEARCH CLASS:
29, Metal Working, for a method of mechanical manufacture or
for apparatus to assemble or disassemble, subclass 402.02
for a method of repairing a seal or element thereof not
provided for elsewhere or subclasses 700+ for general
apparatus to assemble or disassemble.
49, Movable or Removable Closures, for more than nominal
movable or removable closure structure (e.g., door jam,
etc.), subclass 482.1 for a seal acting at a juncture of the
closure and an adjacent member having a segmenting,
replacing, adjusting, or severing feature.
413, Sheet Metal Container Making, for a process or apparatus
for performing an attendant operation before final assembly
of a lid to a receptacle, subclass 34 for apparatus to seam
together the receptacle and lid using a roller die including
means to apply a gasket or seal therebetween before they are
or subclasses 58+ for apparatus to form lid having means to
apply seal or liner.
Subclass:
631
Split including end joining structure:
This subclass is indented under subclass 628. Contact seal
for other than wherein the seal structure has a gap and
uniting means to connect edges created by the gap.
SEE OR SEARCH THIS CLASS, SUBCLASS:
subclasses 494+ for a piston ring having a gap and a
separate bridging piece for the gap.
subclasses 496+ for a single piece split piston ring having
opposed asymmetrical mirrored ends.
subclasses 498+ for a piston ring where a single piece
split annulus has substantially opposed dissimilar ends.
subclasses 546+ for a dynamic, segmented ring
circumferentially contacting seal for other than a piston
having a particular end structure.
Subclass:
632
Segmented periphery:
This subclass is indented under subclass 628. Contact seal
for other than wherein the seal's perimeter is divided into
portions.
Subclass:
633
Spirally wound structure:
This subclass is indented under subclass 628. Contact seal
for other than wherein the seal has a concentrically coiled
arrangement.
SEE OR SEARCH THIS CLASS, SUBCLASS:
610 for a static contact seal intended for insertion between
an end-to-end pipe, conduit, or cable joint having a spirally
wound structure.
Subclass:
634
Flexible sleeve, boot, or diaphragm:
This subclass is indented under subclass 628. Contact seal
for other than wherein the seal has a flexible wall member to
accommodate relatively movable parts allowing static contact
sealing against the parts.
SEE OR SEARCH THIS CLASS, SUBCLASS:
315 for a process of static sealing employing a flexible
sleeve, boot, or diaphragm.
389 for a relatively rotatable, radially extending, sealing
face member (e.g., face, mechanical, etc.) including fluid
pressure acting against a bellows or diaphragm to create an
axial bias therefor.
subclasses 391+ for a relatively rotatable, radially
extending, sealing face member (e.g., face, mechanical, etc.)
including a flexible sleeve, boot, or diaphragm to provide a
secondary seal or driving connection therefor.
504 for a dynamic, circumferential contact seal for other
than a piston that accommodates gyratory or oscillatory
motion by using a flexible connection having static contact
between the seal and one of the relatively movable parts.
SEE OR SEARCH CLASS:
74, Machine Elements and Mechanisms, subclasses 18+ for a
flexible sealing material attached to a casing and a moving
rod, and a device or mechanism to move the rod.
100, Presses, subclass 269.21 for a seal or gasket around a
piston for a fluid actuated reciprocating press.
188, Brakes, for means of retarding motion of or stopping of
machines; subclass 73.44 or an axially extending pin to
retain an actuator axially slidable in a plane parallel to an
axis of a rotating wheel that usually includes a seal.
251, Valves and Valve Actuation, for means to close or
restrict a flow of fluid through a passage by a definite
predetermined motion of the means combined with a seal,
subclass 335.1, for a flexible wall seal between an actuator
and valve.
403, Joints and Connections, for a joint or connection
structure that goes beyond providing an environment for a
seal; subclasses 50+ for a flexible diaphragm or bellows
secured to each part.
464, Rotary Shafts, Gudgeons, Housings, and Flexible
Couplings for Rotary Shafts, subclasses 173+ for a flexible
boot for a joint to transmit rotary torque.
Subclass:
635
Dome-, cup-, or bell-shaped, or for ball joint:
This subclass is indented under subclass 634. Flexible
sleeve, boot, or diaphragm wherein the seal has an open
containerlike shape or form (e.g., C, U, V, etc.) to enclose
the joint or is for a spherical part of the joint.
SEE OR SEARCH CLASS:
403, Joints and Connections, for a joint or connection
structure that goes beyond providing an environment for a
seal; subclass 134 for a ball and socket having an external
seal (i.e., remote from the bearing surface).
Subclass:
636
Tubular or frustoconical shape having corrugated wall
portion:
This subclass is indented under subclass 634. Flexible
sleeve, boot, or diaphragm wherein the seal is an elongated
enclosing flexible wall having a portion including alternate
furrows and ridges (e.g., pleated, etc.).
Subclass:
637
Having particular associated mounting or retaining feature:
This subclass is indented under subclass 628. Contact seal
for other than including a specific related fastening or
securing means for the seal.
SEE OR SEARCH THIS CLASS, SUBCLASS:
subclasses 616+ for a static, contact seal intended for use
on a pipe, conduit, or cable having an associated mounting or
retaining means for the seal.
SEE OR SEARCH CLASS:
251, Valves and Valve Actuation, for means to close or
restrict a flow of fluid through a passage by a definite
predetermined motion of the means combined with a seal,
subclass 171 for a gland member pressing a seal constituting
a valve seat against a valve head, subclass 189 for separate
actuators or different functions of the same actuator to
increase contact pressure between piston type valves provided
with expansible sealing and a seat, subclass 191 for means to
increase the contact pressure between a piston-type valve
having a seal that expands upon closing and a seat, or
subclass 363 for a removable valve seat having a seal between
the valve seat and its supporting structure.
Subclass:
638
Extrusion preventing (i.e., anti-extrusion) structure:
This subclass is indented under subclass 637. Mounting or
retaining feature including means deterring the seal from
being squeezed out of its seated position or otherwise
dislocated.
SEE OR SEARCH THIS CLASS, SUBCLASS:
subclasses 324+ for a seal for well apparatus having an
overpressure control device that may include extrusion
preventing (i.e., anti-extrusion) structure.
584 for a dynamic, circumferential contact seal for other
than a piston having an extrusion preventing (i.e.,
anti-extrusion) structure.
611 for a static contact seal intended for insertion between
an end-to-end pipe, conduit, or cable joint having an
extrusion preventing (i.e., anti-extrusion) or compression
limiting feature.
subclasses 619+ for a static, contact seal intended for use
on a pipe, conduit or cable including an axially related
backing ring to mount or retain the seal.
Subclass:
639
Compression limiting feature:
This subclass is indented under subclass 637. Mounting or
retaining feature including means restricting seal compaction
between the parts.
SEE OR SEARCH THIS CLASS, SUBCLASS:
593 for a static, contact seal for use between parts of an
internal combustion engine having a compression limiting
feature.
611 for a static, contact seal intended for insertion
between an end-to-end pipe, conduit, or cable joint having an
extrusion preventing (i.e., anti-extrusion) or compression
limiting feature.
Subclass:
640
Anchoring feature extending through seal:
This subclass is indented under subclass 637. Mounting or
retaining feature including a fastening or securing means
projecting through the seal to firmly affix the seal to one
of the parts.
SEE OR SEARCH CLASS:
411, Expanded, Threaded, Driven, Headed, Tool-Deformed, or
Locked-Threaded Fastener, for a fastener suited for general
use, subclasses 369+ for a headed, threaded, fastening
means and nut having a washer and seal, or subclass 542 for a
washer configured for a fastener having a seal.
Subclass:
641
Groove structure on the seal or part:
This subclass is indented under subclass 637. Mounting or
retaining feature wherein the mounting or retaining means is
an indentation on the seal or part.
SEE OR SEARCH THIS CLASS, SUBCLASS:
625 for a static, contact seal having a particular mounting
or retaining feature for and intended for use on a pipe,
conduit, or cable.
SEE OR SEARCH CLASS:
49, Movable or Removable Closures, for more than nominal
movable or removable closure structure (e.g., door jam,
etc.), subclass 483.1 for a seal acting at a juncture of the
closure and an adjacent member having complementary engaging
portions on closure or closure and portal frame.
Subclass:
642
Channel shaped:
This subclass is indented under subclass 641. Groove
structure wherein the groove has a generally U-shaped
cross-section.
SEE OR SEARCH CLASS:
49, Movable or Removable Closures, for more than nominal
movable or removable closure structure (e.g., door jam, etc.)
for a seal acting at a juncture of the closure and an
adjacent member, subclass 489.1 anchored in channel or slot
in closure or portal frame or subclass 490.1 having a
U-shaped member or portion to mount the seal.
Subclass:
643
Single seat formed by plural recesses:
This subclass is indented under subclass 641. Groove
structure wherein the parts or seals have indentations to
form the mounting or retaining groove when assembled.
SEE OR SEARCH THIS CLASS, SUBCLASS:
614 for a static contact seal intended for insertion between
an end to end pipe, conduit or cable joint where each end has
a recess for the seal.
Subclass:
644
Particular cross-sectional seal profile:
This subclass is indented under subclass 628. Contact seal
for other than wherein the seal has a specific shape in a
view of a vertical plane cutting across the seal at right
angles to one of its principal horizontal dimensions.
SEE OR SEARCH CLASS:
626, for a static, contact seal having a particular seal
shape intended for use on a pipe, conduit, or cable.
Subclass:
645
Hollow or filled chamber:
This subclass is indented under subclass 644. Particular
cross-sectional seal profile wherein the seal has a cavity
empty or full of material.
SEE OR SEARCH THIS CLASS, SUBCLASS:
605 for a hollow, fluid-filled, or inflatable static contact
seal or an associated member intended for use on a pipe,
conduit, or cable.
SEE OR SEARCH CLASS:
49, Movable or Removable Closures, for more than nominal
movable or removable closure structure (e.g., door jam,
etc.), subclass 498.1 for a seal acting at a juncture of the
closure and an adjacent member is tubular or has a tubular
portion.
Subclass:
646
Inflatable:
This subclass is indented under subclass 645. Such as a
hollow or filled chamber wherein the chamber has pressurized
fluid introduced to expand the seal.
SEE OR SEARCH THIS CLASS, SUBCLASS:
subclasses 331+ for an inflatable packer-type seal for well
apparatus.
583 for a dynamic inflatable or biased by an inflatable
member circumferential contact seal for other than a piston.
SEE OR SEARCH CLASS:
49, Movable or Removable Closures, for more than nominal
movable or removable closure structure (e.g., door jam,
etc.), subclass 477.1 for a seal acting at a juncture of the
closure and an adjacent member having an inflatable or fluid
pressure responsive feature.
Subclass:
647
C-, U-, or V-shaped:
This subclass is indented under subclass 644. Particular
cross-sectional seal profile wherein the seal has a C-, U-,
or V-form in a view of a vertical plane cutting across the
seal at right angles to one of its principle horizontal
dimensions.
SEE OR SEARCH THIS CLASS, SUBCLASS:
395 for a relatively rotatable radially extending sealing
face member (e.g., face, mechanical, etc.) including a
secondary mounting seal having U- or V-shaped, peripherally,
radially sealing, flexible projections (e.g., lip seal,
etc.).
530 for a dynamic, circumferential contact seal for other
than a piston intended to be contained or compressed by a
gland member in a packing box having a C, M, U-, V, X, or Z
cross-sectional seal shape.
567 for a dynamic, circumferential contact seal for other
than a piston having peripherally, radially sealing, flexible
projections forming a radially facing U or V cross-sectional
profile.
Subclass:
648
Plural projections along sealing surface:
This subclass is indented under subclass 644. Particular
cross-sectional seal profile wherein the seal has more than
one sealing extension along a side of the seal facing the
part.
SEE OR SEARCH THIS CLASS, SUBCLASS:
subclasses 565+ for a dynamic, circumferentially contact
seal for other than a piston having plural, peripheral,
radially sealing projections on a radial facing side of a
single seal.
612 for a static, contact seal intended for insertion
between an end-to-end pipe, conduit, or cable joint having
plural extended projections.
615 for a static, contact seal intended for use on a pipe,
conduit, or cable having axially spaced projections.
Subclass:
649
Plural projections along opposite sealing surfaces:
This subclass is indented under subclass 648. Plural
projections along a sealing surface including plural
projections along an adverse sealing surface.
Subclass:
650
Particular sealing material or construction:
This subclass is indented under subclass 628. Contact seal
for other than wherein the seal is of a specific material or
has a specific arrangement of material.
SEE OR SEARCH THIS CLASS, SUBCLASS:
subclasses 534+ for a dynamic, circumferential contact seal
for other than a piston intended to be contained or
compressed by a gland member in a packing box having a
particular material or construction.
627 for a static, contact seal intended for use on a pipe,
conduit, or cable having a particular material or
construction.
subclasses 935+ for a seal for other than a static contact
seal for an internal combustion engine, pipe, conduit or
cable made out of a particular material.
SEE OR SEARCH CLASS:
215, Bottles and Jars, for a cap type bottle or jar closure,
subclass 233 for a hardenable liquid or plastic seal where
the closure seats on the bottle or jar.
Subclass:
651
Embedded reinforcement:
This subclass is indented under subclass 650. Particular
sealing material or construction wherein the seal envelops a
means to strengthen the seal.
Subclass:
652
Distinct sheath or covering:
This subclass is indented under subclass 650. Particular
sealing material or construction wherein the seal has a
distinct casing or layer surrounding at least a major portion
of an outer periphery of the seal.
Subclass:
653
Metal:
This subclass is indented under subclass 652. Distinct sheath
or covering wherein the sheath or covering is metal.
Subclass:
654
Plural layers:
This subclass is indented under subclass 650. Particular
sealing material or construction wherein the seal has more
than one ply of material.
SEE OR SEARCH THIS CLASS, SUBCLASS:
592 for a static, contact seal intended for use between
parts of an internal combustion engine having a particular
coating or layer of sealing material.
CROSS-REFERENCE ART COLLECTIONS
The following collections have their patents placed without
regard to their original classification or to their claimed
subject matter. These collections, therefore, are only
examples of the art encompassed by the definition and a
thorough search for a desired concept should include a search
in the proceeding subclasses. Do not place originals in
cross-reference art collections.
Subclass:
902
SEAL FOR STERLING ENGINE:
This subclass is indented under the class definition. Sealing
means intended to seal a joint or juncture of a sterling
engine.
Subclass:
903
SEAL FOR ROTATING KILN OR DRUM:
This subclass is indented under the class definition. Sealing
means intended to seal a joint or juncture between a static
part and a relatively rotating hollow cylindrical heated
container.
SEE OR SEARCH CLASS:
34, Drying and Gas or Vapor Contact With Solids, for
apparatus to separate liquids from solids (i.e., drying) or
contacting solids with gases or vapors, subclass 601 that
may have a seal between a rotating drum or receptacle, and a
housing.
432, Heating, subclass 115 for a rotary drum mounted for
rotation about a horizontal or slightly inclined axis, the
rotation of the rotary drum imparting a tumbling motion to
material placed therein, forming a juncture against a
stationary part with a flexible seal, cooler seal, or an air
curtain-type flow controller therebetween to prevent escape
of the rotary drum's atmosphere.
Subclass:
904
VISCOUS SEAL:
This subclass is indented under the class definition. Sealing
means wherein the sealing means is a material having a ropy
or glutinous consistency (e.g., lacking in easy movement or
fluidity, etc.) and having the quality of sticking or
adhering to oppose the flow of fluid at the joint or
juncture.
SEE OR SEARCH THIS CLASS, SUBCLASS:
subclasses 301+ for a process of dynamic close proximity
sealing (e.g., contactless, fluent, etc.).
subclasses 347+ for diverse and distinct dynamic seals
including a close proximity seal.
subclasses 409+ for a dynamic, close proximity seal (e.g.,
contactless, fluent, etc.).
Subclass:
905
T-SHAPED OR I-SHAPED RING MEMBER INCLUDING SEAL ON A SIDE:
This subclass is indented under the class definition. Sealing
means comprising an annular component of T- or I-shaped
cross-section having sealing means on either or both sides of
the annular component's central periphery.
Subclass:
906
SEAL FOR ARTICLE OF INDEFINITE LENGTH (E.G., STRIP, SHEET,
ETC.):
This subclass is indented under the class definition. Sealing
means comprising sealing means for use on an article of
indeterminate extent.
SEE OR SEARCH CLASS:
432, Heating, subclass 244 for a heating device specialized
to feed or discharge a work chamber including a seal at the
chamber's wall for conveyor arm or shaft.
Subclass:
907
PASSAGEWAY IN ROD OR SHAFT:
This subclass is indented under the class definition. Sealing
means including a pathway for a fluid in a part (e.g., rod,
shaft) relatively movable to and surrounded by another part
(e.g., housing, casing, etc.).
SEE OR SEARCH CLASS:
305, Wheel Substitites for Land Vehicles, subclasses 100+
for a passageway in a connecting pin for lubrication.
Subclass:
908
SEAL FOR USE IN ROTATING AND RECIPROCATING ARRANGEMENT:
This subclass is indented under the class definition. Sealing
means comprising sealing means between relatively movable
parts that rotate and reciprocate.
Subclass:
909
SIMILAR SEALING STRUCTURES FOR MOUNTING ON PISTON AND ABOUT
ROD:
This subclass is indented under the class definition. Sealing
means comprising sealing means providing the same basic
sealing structure for use in different embodiments such as
(1) on a part (i.e., a piston) that reciprocates along an
axis of an enclosing wall and, (2) on either the enclosing
wall surrounding a reciprocating part (e.g., rod, etc.) or
the part (i.e., a piston).
Subclass:
910
O-RING SEAL:
This subclass is indented under the class definition. Sealing
means comprising a seal circular in plan view but may be of
any geometric shape in a view of a vertical plane cutting
across the seal at right angles to one of its principal
horizontal dimensions.
SEE OR SEARCH THIS CLASS, SUBCLASS:
382 for a relatively rotatable, radially extending, sealing
face member (e.g., face, mechanical, etc.) using an O-ring
shaped axial biasing spring made of elastomeric material.
SEE OR SEARCH CLASS:
384, Bearings, for more than nominal bearing structure or
detail (e.g., liner, bearing race, cage, etc.) combined with
a specific seal, subclass 152 for a plain radial bearing
where the seal is in the shape of an O-ring on the outer area
of the bearing or shaft and made out of a resilient material
or subclass 489 for a radial antifriction bearing where the
seal is a resilient O-ring seal.
Subclass:
911
SEAL COMBINED WITH NOMINAL MOTION TRANSMITTING DEVICE:
This subclass is indented under the class definition. Sealing
means combined with a movement relay setting forth only so
much structure foreign to the class to define the operating
environment of the seal means.
SEE OR SEARCH THIS CLASS, SUBCLASS:
subclasses 390+ for a relatively rotatable radially
extending sealing face member (e.g., face, mechanical, etc.)
including a secondary mounting seal or driving connection
therefor.
subclasses 634+ for a static, contact, flexible sleeve,
boot, or diaphragm seal for other than an internal combustion
engine or a pipe, conduit, or cable.
SEE OR SEARCH CLASS:
403, Joints and Connections, for a joint or connection
structure that goes beyond providing an environment for a
seal; subclass 288 for a seal distinct from the joint and
unnecessary to the connection of parts.
Subclass:
912
Spline connection:
This subclass is indented under subclass 911. Nominal motion
transmitting device wherein the device is a series of spaced
ridges parallel to a longitudinal axis of one of the parts
(e.g., rod, shaft, etc.) that fits into a corresponding hole
in the other part.
SEE OR SEARCH THIS CLASS, SUBCLASS:
354 for a dynamic seal for a helically threaded part.
Subclass:
913
SEAL FOR FLUID PRESSURE BELOW ATMOSPHERIC (E.G., VACUUM,
ETC.):
This subclass is indented under the class definition. Sealing
means intended to maintain a sealed fluid at a pressure lower
than air pressure from its surrounding environment.
Subclass:
914
BACKUP SEAL FOR FAILURE OF PRIMARY SEAL:
This subclass is indented under the class definition. Sealing
means comprising a main and secondary sealing means whereby
the secondary sealing means acts as an auxiliary seal upon
the breakdown of the main sealing means.
(1) Note. The fluid pressure typically forces the auxiliary
seal into operation.
SEE OR SEARCH THIS CLASS, SUBCLASS:
929 for a seal where a change in operation or condition
induces additional leakage control.
Subclass:
915
SEAL INCLUDING COMPRESSION SET FEATURE:
This subclass is indented under the class definition. Sealing
means comprising a seal material having a specific property
defined by the measurement of permanent deformation remaining
after releasing the material from a compressive load as an
index to creep or stress relaxation.
Subclass:
916
SEAL INCLUDING VIBRATION DAMPENING FEATURE:
This subclass is indented under the class definition. Sealing
means including means to reduce or eliminate oscillatory or
gyratory effects.
Subclass:
917
SEAL INCLUDING FRANGIBLE FEATURE:
This subclass is indented under the class definition. Sealing
means including means allowing breaking or tearing of the
seal.
SEE OR SEARCH CLASS:
413, Sheet Metal Container Making, for a process or apparatus
for performing an attendant operation before final assembly
of a lid to a receptacle; subclasses 12+ for a process of
fabricating a frangible end closure or assembling a frangible
part to an end closure or subclasses 67+ for apparatus to
form lid having means to form frangible zone in lid.
Subclass:
918
SEAL COMBINED WITH FILTER OR FLUID SEPARATOR:
This subclass is indented under the class definition. Sealing
means combined with means to remove foreign material from a
fluid or separate distinct fluids.
SEE OR SEARCH CLASS:
210, Liquid Purification or Separation, subclass 450 for a
filter in a flow line or a flow line connected closed casing
having a gasket between the filter and walls of the casing
(e.g., oil filter gasket, etc.).
Subclass:
919
SEAL INCLUDING ELECTRICAL FEATURE:
This subclass is indented under the class definition. Sealing
means including an ability to conduct or resist a flow of
electricity.
SEE OR SEARCH CLASS:
174, Electricity: Conductors and Insulators, for an
insulator and specialized apparatus to mount, support,
encase, box or house an electrical component; subclass 65
for a box or housing structurally limited to electrical use
or including an electrical device, that may include a seal
between a cable and the box or housing, or subclasses 152+
for a grommet to insulate a conductor as it extends through a
wall or plate.
439, Electrical Connectors, for a generic electrical
connection between at least two conducting elements
permitting relative motion or where the connection is a
readily made or broken type, subclass 927 for a conductive
gasket.
Subclass:
920
SEAL INCLUDING ELECTROMAGNETIC SHIELDING FEATURE:
This subclass is indented under the class definition. Sealing
means including an ability to protect against electrical and
magnetic radiation.
SEE OR SEARCH CLASS:
174, Electricity: Conductors and Insulators; for an insulator
and specialized apparatus to mount, support, encase, box, or
house an electrical component; subclass 35 for an
electromagnetic shield or anti-inductive device that may be a
gasket.
439, Electrical Connectors, for a generic electrical
connection between at least two conducting elements
permitting relative motion or where the connection is a
readily made or broken type, subclass 89 for a seal to a
connector having inductive shielding or arc suppressing means
including an elastomeric or nonmetallic conductive portion.
Subclass:
921
CLOSURE OR WEATHER STRIP SEAL:
This subclass is indented under the class definition. Sealing
means wherein the seal is a narrow piece intended for use at
the juncture between an obstructive structure and a
passageway, or to close or reduce a gap formed at the
juncture to prevent or reduce the flow of ambient air or
moisture therethrough.
SEE OR SEARCH CLASS:
49, Movable or Removable Closures, for more than nominal
movable or removable closure structure (e.g., door jam,
etc.); subclass 475.1 for a seal acting at a juncture of
the closure and an adjacent member.
296, Land Vehicles: Bodies and Tops, for a body secured to
the running gear and a top therefor, subclass 93 for
weatherstripping to seal between panels or between a
windshield and the body or top.
Subclass:
922
BONDING OR JOINING FOR MANUFACTURE OF SEAL:
This subclass is indented under the class definition. Sealing
means comprising a seal constructed by binding or uniting
components of the seal.
SEE OR SEARCH THIS CLASS, SUBCLASS:
575 for a dynamic, circumferential, contacting, peripheral,
radially sealing, flexible projection (e.g., lip seal, etc.)
molded or bonded to a mounting, frame, casing, or
reinforcement for other than a piston.
subclasses 576+ for a dynamic circumferential contacting
peripheral radially sealing flexible projection (e.g., lip
seal, etc.) secured by clamping to a mounting, frame, casing
or reinforcement for other than a piston.
SEE OR SEARCH CLASS:
29, Metal Working, for a method of mechanical manufacture,
subclass 888.07 for a method of piston ring or packing
manufacture or subclass 888.3 for a method of seal or packing
manufacture.
156, Adhesive Bonding and Miscellaneous Chemical Manufacture,
subclasses 60+ for a process of manufacturing an article
involving surface bonding or assembly therefor or subclasses
349+ for an apparatus to manufacture an article involving
surface bonding or assembly therefor.
228, Metal Fusion Bonding; in general, for apparatus or
methods of joining the meeting faces of juxtaposed or engaged
metal articles, of the same article originally in a form
sustaining state, or a metal article to a nonmetal article,
by direct application of heat or mechanical energy to the
articles causing a flowing or blending of the meeting faces
or causing a filler to flow or blend together with the
meeting faces to form a continuous interconnecting zone.
413, Sheet Metal Container Making, for a process or apparatus
for performing an attendant operation before final assembly
of a lid to a receptacle; subclass 7 for a process of
applying a sealant to an end joint between the lid and the
receptacle, subclass 9 for a process of joining a preformed
gasket or liner to the lid, or subclasses 58+ for apparatus
to form lid having means to apply seal or liner.
Subclass:
923
Shrink fitting for the assembly of seal:
This subclass is indented under subclass 922. Bonding or
joining for manufacture of seal wherein the seal components
are bonded or joined by subjecting one or more of the
components to a temperature variation of such a magnitude as
to change a dimension of at least one of the components
allowing them to be easily put together, afterwards when the
temperature returns to normal the components held together by
an interference fit.
Subclass:
924
DEFORMATION, MATERIAL REMOVAL OR MOLDING FOR MANUFACTURE OF
SEAL:
This subclass is indented under the class definition. Sealing
means comprising a seal made from a fluent or solid material
formed into a particular shape.
SEE OR SEARCH THIS CLASS, SUBCLASS:
575 for a dynamic circumferential contacting peripheral
radially sealing flexible projection (e.g., lip seal, etc.)
molded or bonded to a mounting, frame, casing or
reinforcement for other than a piston.
subclasses 576+ for a dynamic, circumferential contacting
peripheral radially sealing flexible projection (e.g., lip
seal, etc.) secured by clamping to a mounting, frame, casing
or reinforcement for other than a piston.
617 for a static, contact seal mounted or retained by
molding or casting into a pipe, conduit or cable.
SEE OR SEARCH CLASS:
29, Metal Working, for a method of mechanical manufacture,
subclass 888.07 for a method of piston ring or packing
manufacture or subclass 888.3 for a method of seal or packing
manufacture.
264, Plastic and Nonmetallic Article Shaping or Treating:
Processes, subclasses 239+ for mechanical shaping or
molding to form or reform a shaped article, especially
subclasses 259+ for a composite article created by shaping or
forming molding material against and uniting to a preform.
413, Sheet Metal Container Making, for a process or apparatus
for performing an attendant operation before final assembly
of a lid to a receptacle; subclass 34 for apparatus to seam
together the receptacle and lid using a roller die and
including means to apply a gasket or seal therebetween before
they are.
425, Plastic Article Shaping or Earthenware Shaping or
Treating: Apparatus, a generic class for apparatus not
provided for elsewhere to mold a plastic, shape molten
materials where no molding surface is employed, treating a
product made by the apparatus of this class, randomly deposit
and bond particulate material, or a combination of apparatus
of this class with any diverse working or treating apparatus,
Digest 47 for a seal ring.
451, Abrading, subclasses 28+ for a process of performing
an abrading operation (i.e., where the sharp edges of mineral
crystals form the cutting instrument) and a process of
performing an ancillary operation not provided for
elsewhere.
Subclass:
925
SNAP FIT FEATURE FOR MOUNTING OR ASSEMBLY OF SEAL:
This subclass is indented under the class definition. Sealing
means comprising a seal having a projecting or receiving
portion secured by a sudden sharp engagement means for
installation or construction.
SEE OR SEARCH THIS CLASS, SUBCLASS:
376 for a unitized, relatively rotatable, radially
extending, sealing face member mounted by snap fitting into a
groove in a housing or casing.
Subclass:
926
SEAL INCLUDING FLUID PRESSURE EQUALIZING OR BALANCING
FEATURE:
This subclass is indented under the class definition. Sealing
means including means to create a fluid pressure equilibrium
at the joint or juncture.
(1) Note. This subclass collects patents for this concept
not covered by a regular subclass.
SEE OR SEARCH THIS CLASS, SUBCLASS:
304 for a process of dynamic, close proximity seal (e.g.,
contactless, fluent, etc.) created by pressurized sealing
fluid introduced to form a barrier.
subclasses 431+ for a dynamic, close proximity seal (e.g.,
contactless, fluent, etc.) created by pressurized sealing
fluid introduced to form a barrier.
544 for a dynamic segmented ring circumferentially
contacting seal for other than a piston having pressure
balancing or radial bias reducing means.
SEE OR SEARCH CLASS:
384, Bearings, for more than nominal bearing structure or
detail (e.g., liner, bearing race, cage, etc.) combined with
a specific seal, subclass 479 for a radial antifriction
bearing where the seal establishes a pressure or pressure
responsive means loads the seal.
Subclass:
927
SEAL INCLUDING FLUID PRESSURE DIFFERENTIAL FEATURE:
This subclass is indented under the class definition. Sealing
means including means to create a fluid pressure greater than
or less than the pressure of the sealed fluid at the joint or
juncture to oppose the flow of fluid.
SEE OR SEARCH THIS CLASS, SUBCLASS:
304 for a process of dynamic close proximity seal (e.g.,
contactless, fluent, etc.) created by pressurized sealing
fluid introduced to form a barrier.
subclasses 431+ for a dynamic close proximity seal (e.g.,
contactless, fluent, etc.) created by pressurized sealing
fluid introduced to form a barrier.
subclasses 512+ for a dynamic circumferential contact seal
for other than a piston intended to be contained or
compressed by a gland member in a packing box having means to
introduce or direct a fluid.
SEE OR SEARCH CLASS:
384, Bearings, for more than nominal bearing structure or
detail (e.g., liner, bearing race, cage, etc.) combined with
a specific seal, subclass 479 for a radial antifriction
bearing where the seal establishes a pressure or pressure
responsive means loads the seal.
Subclass:
928
SEAL INCLUDING PRESSURE RELIEF OR VENT FEATURE:
This subclass is indented under the class definition. Sealing
means including means for releasing or relieving fluid
pressure at the joint or juncture.
(1) Note. For this subclass a valve for a passageway must
claim or disclose a venting function.
SEE OR SEARCH THIS CLASS, SUBCLASS:
408 for a relatively rotatable, radially extending, sealing
face member (e.g., face, mechanical, etc.) including means to
introduce, circulate, or remove fluid.
457 for a piston groove having a passageway for fluid
return, pressure relief, or venting.
514 for a dynamic, circumferential contact seal for other
than a piston intended to be contained or compressed by a
gland member in a packing box having fluid draining, venting
or pressure relief means.
552 for a dynamic, circumferential contacting, peripheral,
radially sealing, flexible projection (e.g., lip seal, etc.)
including a pressure relief or venting means for other than a
piston.
SEE OR SEARCH CLASS:
384, Bearings, for more than nominal bearing structure or
detail (e.g., liner, bearing race, cage, etc.) combined with
a specific seal, subclass 479 for a radial antifriction
bearing where the seal establishes a pressure or pressure
responsive means loads the seal.
Subclass:
929
SEAL FEATURE WHERE CHANGE IN OPERATION OR CONDITION INDUCES
ADDITIONAL LEAKAGE CONTROL:
This subclass is indented under the class definition. Sealing
means including means to prevent seepage from occurring at
the joint or juncture during a change in the system or state
of the seal (e.g., when relative movement between parts
stops, etc.).
(1) Note. This subclass collects patents for this concept
not covered by a regular subclass.
SEE OR SEARCH THIS CLASS, SUBCLASS:
subclasses 425+ for a dynamic, close proximity impeller
(e.g., slinger, etc.) seal having a static sealing means
affected by rotational movement.
433 for a dynamic contact seal where centrifugal force
affects displacement, shape, or contact of seal.
558 for a dynamic, circumferentially peripheral, radially
sealing, flexible projection including a fluid pressure
responsive biasing feature contact for other than a piston.
914 for a seal having a backup seal in case of failure of
primary seal.
SEE OR SEARCH CLASS:
384, Bearings, for more than nominal bearing structure or
detail (e.g., liner, bearing race, cage, etc.) combined with
a specific seal, subclass 131 for a plain radial bearing
where fluid moves the seal, subclasses 135+ for a plain
radial bearing where centrifugal force moves or holds the
seal in place, subclass 478 for a radial antifriction bearing
where centrifugal force loads the seal or a liquid or gas
forms a sealing barrier, or subclass 479 for a radial
antifriction bearing where the seal establishes a pressure or
pressure responsive means loads the seal,.
Subclass:
930
SEAL INCLUDING HEATING OR COOLING FEATURE:
This subclass is indented under the class definition. Sealing
means including means to transfer thermal energy (e.g.,
heater, heat exchanger, or heat transmitter; hot or cold
fluid, etc.).
SEE OR SEARCH THIS CLASS, SUBCLASS:
408 for a relatively rotatable, radially extending, sealing
face member (e.g., face, mechanical, etc.) including means to
introduce, circulate, or remove fluid.
432 for a dynamic, close proximity seal created by
pressurized sealing fluid introduced to form a barrier
including an external device or system.
513 for a dynamic, circumferential contact seal for other
than a piston intended to be contained or compressed by a
gland member in a packing box having means to introduce or
direct a fluid having an external device or system.
597 for a static, contact seal for use between parts of an
internal combustion engine having a heat dissipating,
cooling, or insulating feature.
SEE OR SEARCH CLASS:
165, Heat Exchange, subclasses 47+ for a heat exchanger
including structural installation on apparatus external to
the subject matter of this class.
184, Lubrication, for a unitized lubrication means removable
or installable from one machine to on another and intended to
lubricate a bearing part in a machine, subclass 104.1 for a
lubricator including a heating or cooling device.
Subclass:
931
SEAL INCLUDING TEMPERATURE RESPONSIVE FEATURE:
This subclass is indented under the class definition. Sealing
means including means to react to a change in a measure of
warmth or coldness.
(1) Note. This and indented subclasses do not include a
seal that merely accommodates thermal expansion between
parts.
SEE OR SEARCH THIS CLASS, SUBCLASS:
subclasses 359+ for a relatively rotatable, radially
extending, sealing face member (e.g., face, mechanical, etc.)
having a temperature responsive feature.
471 for a particular piston ring expander having thermal
expansion means.
SEE OR SEARCH CLASS:
285, Pipe Joints or Couplings, for means to secure in
end-to-end or side-to-side relationship a pipe to another
pipe, a plate, a wall, a receptacle, or other base where the
means are independent from a seal (i.e., more than the
frictional engagement of the seal secures a pipe end to
another part) or a sleeve securing the pipe ends or another
part; subclass 187 for temperature responsive means to
maintain a good seal for expansion or contraction in the pipe
coupling.
Subclass:
932
Bi-metallic:
This subclass is indented under subclass 931. Temperature
responsive sealing means consisting of two metals having
different coefficients of thermal expansion.
SEE OR SEARCH CLASS:
428, Stock Materials or Miscellaneous Articles, a residual
class for a structurally defined stock material,
nonstructural laminate, article of manufacture, or
intermediate article of manufacture not provided for
elsewhere; subclasses 616+ comprising different contiguous
layers or portions, each having a matrix or continuous phase
of free metal having the property of bending or lengthening
in a circular fashion in response to an increase in
temperature.
Subclass:
933
Chemical reaction or physical change of state:
This subclass is indented under subclass 931. Temperature
responsive sealing means wherein the sealing means changes
its molecular structure or changes its phase (e.g., by
polymerizing, volatilizing, intumescing, fusing, melting,
freezing, etc.) from one condition (i.e., a solid, liquid, or
gas) to another.
SEE OR SEARCH CLASS:
252, Compositions; subclass 72 for a composition that
contains an agent for stopping or reducing a leak in a
container; or subclass 378 for a process of intumescing
vermiculite, other micaceous substances or other materials,
or a product of such a process not provided for elsewhere.
523, Synthetic Resins or Natural Rubbers, subclass 179 for a
process of preparing a desired or intentional composition of
at least one solid polymer or specified intermediate
condensation product, or product thereof having utility as an
ablative or an intumescent coating composition is claimed or
solely disclosed, or to processes or preparation thereof.
Subclass:
934
SEAL SWELLS WHEN WET:
This subclass is indented under the class definition. Sealing
means including means to absorb liquid to increase the volume
of the sealing means.
Subclass:
935
SEAL MADE OF A PARTICULAR MATERIAL:
This subclass is indented under the class definition. Sealing
means consisting of a specific composition or substance.
SEE OR SEARCH THIS CLASS, SUBCLASS:
subclasses 404+ for a relatively rotatable, radially
extending, sealing face member (e.g., face, mechanical, etc.)
made of a particular material.
428 Stock Material or Miscellaneous Articles, a residual
class for a structurally defined stock material,
nonstrictural laminate, an article of manufacture, not
provided for elsewhere; subclasses 131+ for a structurally
defined web or sheet (e.g., an overall dimension, etc.)
including an aperture.
subclasses 440+ for a piston ring having a surface of
dissimilar material or hardness.
subclasses 534+ for a dynamic, circumferential, contact
seal for other than a piston intended to be contained or
compressed by a gland member in a packing box having a
particular material or construction.
627 for a static, contact seal intended for use on a pipe,
conduit, or cable having a particular material or
construction.
subclasses 650+ for a static, contact seal for other than
an internal combustion engine, or a pipe, conduit, or cable
having a particular sealing material or construction.
934 for a seal that swells when wet.
Subclass:
936
Composite:
This subclass is indented under subclass 935. Made of a
particular material consisting of specific distinct
substances that retain their identities in the material used
to form the sealing means.
SEE OR SEARCH CLASS:
428, Stock Materials or Miscellaneous Articles, a residual
class for a structurally defined stock material,
nonstructural laminate, article of manufacture or
intermediate article of manufacture, not provided for
elsewhere; subclass 320.2 comprising a single or plural web
or sheet that contains components where at least one contains
a liquid or has a constituent trapped inside preformed walls;
subclasses 357+ containing or consisting of a strand, fiber,
grain, cell, particle or any substance in terms of a
particular size or shape, a plurality or such arranged
relative to one another, a particular interengagement of a
plurality of such or a coating associated therewith;
subclasses 411.1+ for a composition of layers adhered or
cohered to each other; subclass 426 for layers adhered or
cohered to each other where a layer contains glass that may
be in fiber or mat form; or subclasses 615+ comprising
different contiguous layers or portions, each having a matrix
or continuous phase of free metal.
Subclass:
937
Glass particles or filament:
This subclass is indented under subclass 936. A composite
wherein the composite material includes pieces or fibers of
glass to reinforce the seal structure.
SEE OR SEARCH CLASS:
428, Stock Materials or Miscellaneous Articles, a residual
class for a structurally defined stock material,
nonstructural laminate, article of manufacture or
intermediate article of manufacture, not provided for
elsewhere; subclass 406 containing or consisting of
particulate matter comprised of glass having a particular
size or shape and a coating or subclass 426 for layers
adhered or cohered to each other where a layer contains glass
that may be in fiber or mat form.
Subclass:
938
Carbon or graphite particle or filament:
This subclass is indented under subclass 936. A composite
wherein the composite includes a piece or fiber of carbon to
reinforce the seal structure.
SEE OR SEARCH CLASS:
428, Stock Materials or Miscellaneous Articles, a residual
class for a structurally defined stock material,
nonstructural laminate, article of manufacture or
intermediate article of manufacture, not provided for
elsewhere; subclasses 367+ containing carbon as an element
or compound, and consisting of or coating a rod, strand,
filament or fiber.
Subclass:
939
Containing metal:
This subclass is indented under subclass 935. Made of a
particular material wherein the composition or substance
contains metal.
SEE OR SEARCH CLASS:
420, Alloys or Metallic Compositions, for a generic class for
alloys containing metal or metallic compositions that contain
a continuous phase of metal, methods of making it not
provided for elsewhere, or "elemental" metal, per se.
428, Stock Materials or Miscellaneous Articles, a residual
class for a structurally defined stock material,
nonstructural laminate, article of manufacture or
intermediate article of manufacture, not provided for
elsewhere; subclasses 544+ for metallic.
Subclass:
940
Alloy:
This subclass is indented under subclass 939. Containing
metal wherein the composition or substance is an intimate
mixture of metals or of a metal and a nonmetal.
Subclass:
941
Aluminum or copper:
This subclass is indented under subclass 939. Containing
metal wherein the composition or substance contains copper or
aluminum.
Subclass:
942
Silver or gold:
This subclass is indented under subclass 939. Containing
metal wherein the composition or substance contains silver or
gold.
Subclass:
943
Ceramic or glass:
This subclass is indented under subclass 935. Made of a
particular material wherein the composition or substance is a
fired clay containing composition (e.g., porcelain,
earthenware, etc.), glass or refractory composition (e.g.,
inorganic oxides, carbides, etc.).
SEE OR SEARCH CLASS:
501, Compositions: Ceramic, subclasses 1+ for inorganic
compositions other than Portland cement or cementitious
material prepared from gypsum that are heat treated by
firing, calcining, sintering, or fusion of a part of the
inorganic material during manufacturing or subsequent use to
effect hardening or fusion followed by hardening when cooled
and processes not provided for elsewhere, and especially
subclasses 11+ for a glass composition or a composition
intended to be heat treated to form a glass.
Subclass:
944
Elastomer or plastic:
This subclass is indented under subclass 935. Made of a
particular material wherein the composition or substance is
rubberlike.
SEE OR SEARCH THIS CLASS, SUBCLASS:
582 for a dynamic, circumferential contact floating ring or
bushing made of a particular elastomeric material for other
than a piston.
SEE OR SEARCH CLASS:
520, Synthetic Resins or Natural Rubbers, subclasses 1+ is
the generic subclass for a synthetic resin or natural rubber
preparation, and composition containing or treatment thereof
is to be considered an integral part of Class 260 retaining
all pertinent definitions and class lines and having Classes
521, 522, 523, 524, 525, 526, 527, and 528 indented
thereunder.
Subclass:
945
Containing fluorine:
This subclass is indented under subclass 944. Consisting of
elastomer or plastic wherein the elastomer or plastic
includes fluoride.
SEE OR SEARCH THIS CLASS, SUBCLASS:
570 for a dynamic circumferential contacting peripheral
radially sealing flexible projection made of fluorocarbon for
other than a piston.
Subclass:
946
PTFE OR TEFLON:
This subclass is indented under subclass 945. Containing
fluorine wherein the fluoride is part of a
polytetrafluoroethylene composition.
FOREIGN ART COLLECTIONS
The definitions for FOR 100-FOR 250 below correspond to the
definitions of the abolished subclasses under Class 277 from
which these collections were formed. See the Foreign Art
Collection schedule for specific correspondences. {Note:
The titles and definitions for indented art collections
include all the details of the one(s) that are hierarchically
superior.}
Subclass: FOR 100
Foreign art collections comprising a chamber and a member
coaxial therewith a packing within said chamber and a
follower exerting an axial thrust on the packing and biasing
it radially into sealing engagement with the chamber and
coaxial member.
Subclass: FOR 101
Foreign art collections wherein the follower is a fluid
piston.
Subclass: FOR 102
Foreign art collections wherein the follower comprises a
plurality of connected segments.
Subclass: FOR 103
Foreign art collections wherein the follower is provided with
a flange which is adjustably secured to the chamber by bolts
or studs.
Subclass: FOR 104
Foreign art collections comprising spring means external of
the chamber acting directly on the flange or bolt.
Subclass: FOR 105
Foreign art collections comprising an operating handle for
actuating the follower.
Subclass: FOR 106
Foreign art collections wherein the follower comprises a part
which is modified for engagement with a tool.
Subclass: FOR 107
Foreign art collections wherein the follower is actuated by a
weight.
Subclass: FOR 108
Foreign art collections wherein the follower comprises an
internally screw-threaded thimble.
Subclass: FOR 109
Foreign art collections provided with a locking means to
prevent undesired looseness or retrograde movement of the
screw thimble.
Subclass: FOR 110
Foreign art collections in which the follower is
screw-threaded into the chamber.
Subclass: FOR 111
Foreign art collections comprising a mechanism for
transmitting motion between an actuator and a follower.
Subclass: FOR 112
Foreign art collections wherein the follower is provided with
means preventing retrograde movement thereof.
Subclass: FOR 113
Foreign art collections wherein the chamber is a packing box,
the box or follower being tapered on the surface contacting
the packing.
Subclass: FOR 114
Foreign art collections wherein the tapered surface is
arcuate.
Subclass: FOR 115
Foreign art collections comprising an axially related backing
member for the packing having portions which are biased
radially due to an axial movement of the follower, said
member being structurally dissimilar to the packing.
Subclass: FOR 116
Foreign art collections wherein the packing is retained on a
central stem comprising a plurality of telescoping members
each having a radial shoulder the packing being held between
respective shoulders and biased by relative movement
thereof.
Subclass: FOR 117
Foreign art collections comprising a radially related sleeve
disposed between the packing and a central member on which
the packing is held, the sleeve being so configured that
axial movement thereof will cause the packing to be biased
radially outwardly into packing engagement.
Subclass: FOR 118
Foreign art collections wherein at least a part of a packing
member is spaced from the central stem and is so arranged
that the action of the follower is to bend or bow the packing
member about one or more distinct points.
Subclass: FOR 119
Foreign art collections wherein the bias is transmitted
through wedging surfaces.
Subclass: FOR 120
Foreign art collections wherein a wedging surface is on a
shell within the chamber.
Subclass: FOR 121
Foreign art collections wherein a wedging surface is disposed
on a split or segmental packing member.
Subclass: FOR 122
Foreign art collections wherein one packing member or segment
expands and another packing member or segment contracts due
to the action of the follower.
Subclass: FOR 123
Foreign art collections comprising at least one packing
member or segment made of elastomeric material.
Subclass: FOR 124
Foreign art collections wherein one of the packing members or
segments is adapted to contract due to the action of the
follower.
Subclass: FOR 125
Foreign art collections comprising a plurality of packing
elements.
Subclass: FOR 126
Foreign art collections wherein at least a portion of one
packing member is disposed within a portion of another
packing member.
Subclass: FOR 127
Foreign art collections wherein the packing members are
dissimilar.
Subclass: FOR 128
Foreign art collections comprising adjustable means operable
exteriorly of a packing chamber or seat for biasing the
packing into sealing engagement.
Subclass: FOR 129
Foreign art collections wherein the means comprises a fluid
motor.
Subclass: FOR 130
Foreign art collections wherein the means comprises a
circumferential band contacting a peripheral surface of the
packing.
Subclass: FOR 131
Foreign art collections wherein the means acts along a radial
line extending through the packing.
Subclass: FOR 132
Foreign art collections comprising a packing box having an
access opening in a side wall thereof.
Subclass: FOR 133
Foreign art collections omprising a distinct closure for the
access opening.
Subclass: FOR 134
Foreign art collections wherein the closure member is
connected to or integral with a packing member.
Subclass: FOR 135
Foreign art collections comprising an impeller or baffle
means, at least a part of which is rotatable, which means
acts to deflect the path of dust or fluid to prevent passage
of same through the juncture.
Subclass: FOR 136
Foreign art collections wherein the impeller or baffle means
is so constructed as to direct fluid in a direction parallel
to the axis thereof.
Subclass: FOR 137
Foreign art collections wherein the packing comprises a
liquid barrier sustained between the sealed members.
Subclass: FOR 138
Foreign art collections wherein a packing or bias member is
keyed or anchored to its seat so as to prevent relative
rotation.
Subclass: FOR 139
Foreign art collections wherein the key or anchor engages a
radial wall of the packing seat.
Subclass: FOR 140
Foreign art collections comprising means distinct from the
inherent resilience of the packing material for biasing the
packing in a radial direction.
Subclass: FOR 141
Foreign art collections wherein the bias means is a spacer or
holder for axially spaced packing members.
Subclass: FOR 142
Foreign art collections wherein the spacing means is of
generally U-shaped cross section.
Subclass: FOR 143
Foreign art collections wherein two or more axially spaced
packing rings have a single common bias means.
Subclass: FOR 144
Foreign art collections comprising additional bias means
acting in an axial direction.
Subclass: FOR 145
Foreign art collections comprising means for resolving a
radial force into axial and radial biasing components.
Subclass: FOR 146
Foreign art collections wherein the radial bias acts through
inclined surfaces.
Subclass: FOR 147
Foreign art collections wherein the elements which comprise
the inclined surfaces are symmetrical to a plane transverse
of the axis of the packing.
Subclass: FOR 148
Foreign art collections comprising means associated with the
bias means which (1) prevents the bias means from escaping
from a seat or (2) limits the action of the bias means.
Subclass: FOR 149
Foreign art collections comprising means for adjusting the
stress on the bias means.
Subclass: FOR 150
Foreign art collections wherein the packing comprises a
plurality of segments at least one of which is biased
independently of the remaining segment(s).
Subclass: FOR 151
Foreign art collections comprising a plurality of springs
which act in a radial direction at spaced points about the
periphery of the packing.
Subclass: FOR 152
Foreign art collections wherein the bias means is disposed
within a radial socket or about a radial pin.
Subclass: FOR 153
Foreign art collections wherein the biasing means exerts a
thrust at spaced points on the circumference of the packing
and in a direction tangential or parallel thereto.
Subclass: FOR 154
Foreign art collections wherein the bias means acts directly
on a lip or boss extending axially of the seat engaging part
of the packing.
Subclass: FOR 155
Foreign art collections wherein the bias means is a coil
spring exposed throughout at least a portion of its
periphery.
Subclass: FOR 156
Foreign art collections wherein the packing comprises a
plurality of segments, the opposed end portions of which are
provided with complementary interfitting portions.
Subclass: FOR 157
Foreign art collections wherein the packing comprises a
plurality of segments, the opposing ends of which are capped
or bridged by a separate segment.
Subclass: FOR 158
Foreign art collections comprising plural split or segmental
packing members with the joint or gap between opposed ends of
each packing member, so arranged as to be out of registration
with the corresponding portion of an adjacent packing
member.
Subclass: FOR 159
Foreign art collections comprising a spring which engages the
periphery of the packing member.
Subclass: FOR 160
Foreign art collections wherein the spring and packing are of
diverse peripheral shape.
Subclass: FOR 161
Foreign art collections wherein the spring has tongues or
projections extending from the main body thereof.
Subclass: FOR 162
Foreign art collections wherein the spring is wave or
undulate in shape.
Subclass: FOR 163
Foreign art collections wherein the spring is of polygonal
shape.
Subclass: FOR 164
Foreign art collections wherein the spring has a gap between
two spaced ends.
Subclass: FOR 165
Foreign art collections wherein the spring is of spiral
configuration.
Subclass: FOR 166
Foreign art collections comprising a spring embedded within
or enclosed by a packing element.
Subclass: FOR 167
Foreign art collections wherein the means for biasing the
packing is made of a nonmetallic material.
Subclass: FOR 168
Foreign art collections comprising anchor means extending
through or interfitting with the packing.
Subclass: FOR 169
Foreign art collections comprising a helical packing seat.
Subclass: FOR 170
Foreign art collections comprising a pair of complementary
packing members, each seated or anchored to a respective
member to be packed, in sealing engagement therewith, and
also being in sealing engagement with the other packing
member, both of said packing members being necessary to
perform a sealing function.
Subclass: FOR 171
Foreign art collections comprising a recess in each of two
packed members, the two recesses cooperating to form a single
packing seat.
Subclass: FOR 172
Foreign art collections comprising a seat for a packing
element, said seat having a portion which is stepped or
tapered in the direction of its width.
Subclass: FOR 173
Foreign art collections comprising an arcuate wall portion.
Subclass: FOR 174
Foreign art collections comprising an oblique wall portion.
Subclass: FOR 175
Foreign art collections comprising a plurality of oblique
wall portions.
Subclass: FOR 176
Foreign art collections wherein the oblique portions are
parallel to each other.
Subclass: FOR 177
Foreign art collections comprising a packing member which is
relatively movable with respect to both members.
Subclass: FOR 178
Foreign art collections wherein the packing member is movable
as a unit in a radial direction.
Subclass: FOR 179
Foreign art collections wherein the packing member is held
against a cooperating surface by an axially acting spring.
Subclass: FOR 180
Foreign art collections comprising an additional member which
cooperates with the packing member.
Subclass: FOR 181
Foreign art collections wherein the packing member is
composed of elastomeric material.
Subclass: FOR 182
Foreign art collections wherein a part of a packing member
interfits with a flange which projects radially from a member
to which the packing is attached.
Subclass: FOR 183
Foreign art collections wherein a reenforcement is embedded
in a packing element opposite a tapered mounting surface.
Subclass: FOR 184
Foreign art collections comprising a compressible packing and
a rigid element associated therewith, said rigid element
serving to limit the compression, said rigid material being
of harder material than the remaining portion of said
packing.
Subclass: FOR 185
Foreign art collections comprising a packing member having a
distinct retaining portion carried thereby to retain said
packing member in its operative position.
Subclass: FOR 186
Foreign art collections wherein the attaching member
comprises a confining or housing element engaging the packing
member about its outer periphery.
Subclass: FOR 187
Foreign art collections wherein the housing element is
provided with a radial flange defining a mounting portion for
the housing element.
Subclass: FOR 188
Foreign art collections comprising a radially opening
channel-shaped member.
Subclass: FOR 189
Foreign art collections wherein there are two packing
attached retainers, one at each of two axially opposed ends
of the packing.
Subclass: FOR 190
Foreign art collections wherein the retaining portion is
resilient.
Subclass: FOR 191
Foreign art collections comprising a packing chamber or seat
having a detachably secured end wall.
Subclass: FOR 192
Foreign art collections comprising a backing or retaining
member axially related to a packing element. Mere
duplication of the same packing element in a single seat or
chamber is classified on the basis of a single element in the
same environment.
Subclass: FOR 194
Foreign art collections comprising a means for anchoring or
retaining a packing member in operative position.
Subclass: FOR 195
Foreign art collections wherein the packing seat comprises a
plurality of intimately secured parts.
Subclass: FOR 196
Foreign art collections comprising a plurality of
complementary portions, at least one of which is of
wedge-shaped cross-section, the displacement of said
wedge-shaped portion relative to the other, causing a
corresponding lateral deflection or displacement due to the
wedging action.
Subclass: FOR 197
Foreign art collections comprising a covering completely
enclosing the complementary portions.
Subclass: FOR 198
Foreign art collections comprising a plurality of separable
distinct segments which are interrelated to form a single
packing element.
Subclass: FOR 199
Foreign art collections wherein the segments are axially
related to each other.
Subclass: FOR 200
Foreign art collections wherein at least one of the segments
is of L-shaped cross-section.
Subclass: FOR 201
Foreign art collections comprising an additional segment
which is related radially with respect to at least one of the
other segments.
Subclass: FOR 202
Foreign art collections wherein at least one of the segments
is coiled or corrugated.
Subclass: FOR 203
Foreign art collections comprising split segments oriented so
that the splits of adjacent segments are in diametrically
opposed relation.
Subclass: FOR 204
Foreign art collections wherein the segments are nested in
concentric relationship.
Subclass: FOR 205
Foreign art collections wherein the ends of the segments are
provided with complementary interfitting parts.
Subclass: FOR 206
Foreign art collections comprising a packing member having a
pair of axially spaced flanges joined by an intervening web
of corrugated or undulated formation.
Subclass: FOR 207
Foreign art collections comprising an annular packing element
having an opening which extends through a wall thereof.
Subclass: FOR 208
Foreign art collections wherein the opening is elongated.
Subclass: FOR 209
Foreign art collections comprising a packing element which is
coiled into a helical configuration.
Subclass: FOR 210
Foreign art collections comprising a packing element coiled
about itself in a volute formation.
Subclass: FOR 211
Foreign art collections comprising a packing member having a
pair of flexible peripheral lips extending from a body
portion, said lips and body portion together forming a
channel-shaped cross-section, the lips being of greater
extent than any intervening part.
Subclass: FOR 212
Foreign art collections wherein the channel opens radially
and each side wall of the channel has a component in a radial
direction.
Subclass: FOR 214
Foreign art collections comprising a packing element having a
plurality of ribs extending therefrom adapted for contact
with another member forming a sealing surface therewith.
Subclass: FOR 215
Foreign art collections wherein the ribs are axially spaced
on the circumference of the packing element.
Subclass: FOR 216
Foreign art collections wherein the ribs are on opposite
sides of the packing element.
Subclass: FOR 217
Foreign art collections wherein the ribs make substantially a
line contact with the member against which they bear.
Subclass: FOR 218
Foreign art collections wherein the ribs are on opposite
sides of the packing element.
Subclass: FOR 220
Foreign art collections comprising a packing element having a
flexible lip extending axially from either the inner (flange
type) or the outer (cup type) periphery of a body portion.
Subclass: FOR 224
Foreign art collections comprising a packing element having a
contact surface provided with a plurality of folds or
corrugations.
Subclass: FOR 225
Foreign art collections comprising a packing element having a
groove in a surface extending about the entire circumference
thereof.
Subclass: FOR 226
Foreign art collections comprising a packing element provided
with a plurality of spaced pockets, grooves or recesses in a
peripheral surface.
Subclass: FOR 227
Foreign art collections comprising an annular packing element
provided with a radial split forming two opposed ends.
Subclass: FOR 228
Foreign art collections wherein the radius of the packing
element varies from point to point when said element is in a
relaxed state.
Subclass: FOR 229
Foreign art collections comprising means separate from the
annulus for closing the gap between the two opposed ends or
to connect the ends together.
Subclass: FOR 230
Foreign art collections wherein the gap or bridging piece is
fixedly secured to at least one end of the annulus.
Subclass: FOR 231
Foreign art collections comprising means for joining the
opposed ends of the packing element.
Subclass: FOR 232
Foreign art collections comprising a tongue extending
outwardly from one end and a complementary slot in the
opposing end for receiving said tongue.
Subclass: FOR 233
Foreign art collections wherein the end portions are provided
with complementary bevelled or arcuate mating surfaces.
Subclass: FOR 234
Foreign art collections comprising two parts, one of which
fits within a recess in the other.
Subclass: FOR 235
Foreign art collections wherein the insert is made of a
material which is harder than that of the remainder of the
packing element.
Subclass: FOR 236
Foreign art collections comprising a packing element having a
radial peripheral flange intermediate its ends.
Subclass: FOR 237
Foreign art collections comprising a tubular sheath which
confines a core of fluent material or a vacuum.
Subclass: FOR 238
Foreign art collections comprising two or more parts of
similar or dissimilar material.
Subclass: FOR 239
Foreign art collections wherein one of the parts is an
elastomeric core which is completely enclosed by another
part.
Subclass: FOR 240
Foreign art collections wherein one of the parts comprises a
sheath which completely encircles a core about at least one
axis, said sheath being identifiable apart form the core.
Subclass: FOR 241
Foreign art collections wherein the sheath comprises a
plurality of strands which are woven or braided together.
Subclass: FOR 242
Foreign art collections wherein one of the parts is of
U-shaped or V-shaped configuration and forms an exterior
contact surface which overlaps or confines a portion of the
other part.
Subclass: FOR 243
Foreign art collections wherein the overlapped or confined
portion comprises two or more distinct plies.
Subclass: FOR 244
Foreign art collections comprising two or more planar or
conical plies.
Subclass: FOR 245
Foreign art collections wherein an outer ply is made of
metal.
Subclass: FOR 246
Foreign art collections wherein one of the parts comprises
metal.
Subclass: FOR 249
Foreign art collections made of metal.
Subclass: FOR 250
Foreign art collections not provided for in the above
subclasses.
Information Products Division -- Contacts
Questions regarding this report should be directed to:
U.S. Patent and Trademark Office
Information Products Division
PK3- Suite 441
Washington, DC 20231
tel: (703) 306-2600
FAX: (703) 306-2737
email: oeip@uspto.gov
Last Modified: 6 October 2000