US 7,357,701 B2
Water driven rotary tool
Dan Gautier, 5960 SW. 78th St., Miami, Fla. 33143 (US); Jose Gentilcore, 12551 NW. 78th Manor, Parkland, Fla. 33076 (US); Marcelo Dario Didone, 3721 W. Hillsboro Blvd., Coconut Creek, Fla. 33073 (US); and Jorge Alfredo Coyetano Didone, 2041 NE. 56th St., Apt. #A, Ft. Lauderdale, Fla. 33308 (US)
Filed on Apr. 08, 2005, as Appl. No. 11/101,928.
Application 11/101928 is a continuation in part of application No. 11/102110, filed on Apr. 07, 2005.
Prior Publication US 2006/0229005 A1, Oct. 12, 2006
This patent is subject to a terminal disclaimer.
Int. Cl. B24B 23/00 (2006.01)
U.S. Cl. 451—359  [451/353; 451/344] 14 Claims
OG exemplary drawing
 
1. A water powered rotary tool comprising:
a housing, said housing including an upper portion and a lower portion, said lower portion including a removable and replaceable first bearing, said first bearing axially aligned within a centrally located impeller cavity, said impeller cavity including an upper portion and a lower portion, said lower portion of said impeller cavity having a substantially cylindrical shape, a water inlet for allowing high pressure water into said impeller cavity, said upper portion of said impeller cavity including an exhaust channel, said exhaust channel having a substantially oval shape, said exhaust channel constructed and arranged to utilize centrifugal force to direct said high pressure water to a water exhaust for exhausting said high pressure water from said impeller cavity, said housing including at least one integrally formed boss on an external surface thereof, said at least one boss including a threaded aperture for removable attachment of a handgrip;
an impeller, said impeller including an upper side plate and a lower side plate, a plurality of vanes extending between said side plates, a centrally located aperture for a drive shaft, said drive shaft defining an axis of rotation for said impeller, said drive shaft constructed and arranged to extend through said impeller aperture and engage said impeller as well as said first bearing, said drive shaft having sufficient length to extend through an aperture centrally located in said lower portion of said housing for attachment to a backing disk;
a backing disk for attachment of an abrasive medium to said drive shaft, wherein rotation of said impeller causes rotation of said backing disk;
a handgrip for operator manipulation of said water powered rotary tool, said handgrip removably secured to said at least one integrally formed boss;
a source of high pressure water connected to said water inlet via a flexible hose member, wherein said high pressure water impacts said impeller vanes at an angle substantially perpendicular to said axis of rotation causing rotation of said impeller.