Bibliographic Citation
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| Title | Apparatus for ventilating an enclosed area |
| Creator/Author | Schad, L.A. |
| Publication Date | 1987 Mar 10 |
| OSTI Identifier | OSTI ID: 6653035 |
| Report Number(s) | US 4648312 |
| Resource Type | Patent |
| Resource Relation | Pat. File: Filed date 20 May 1985 |
| Subject | 320107 -- Energy Conservation, Consumption, & Utilization-- Building Systems-- (1987-) ;320106 -- Energy Conservation, Consumption, & Utilization-- Building Equipment-- (1987-); BUILDINGS-- VENTILATION SYSTEMS;VENTILATION SYSTEMS-- DESIGN;VENTILATION SYSTEMS-- OPERATION; AIR FLOW;BLOWERS;EXHAUST SYSTEMS;FINS;ROTATION;TUBES;WEATHER |
| Related Subject | FLUID FLOW;GAS FLOW;MOTION |
| Description/Abstract | This patent describes an apparatus for attachment to a vent tube for ventilating an enclosed area comprising; a tube adaptor for mounting the ventilation apparatus on the vent tube; rotatable hub means secured to and coaxial with the tube adaptor; a substantially hemispherical domelike member rotatably secured to the hub means above the tube adaptor; internal exhaust fan blade means rotatably mounted on the internal surface of the substantially hemispherical domelike member for rotation therewith; the internal exhaust fan blade means having a lower edge curved under away from the direction of rotation providing a leading edge air foil, and having a titled concave contour away from the leading edge and direction of rotation; the internal exhaust fan blade means having an intake portion and an exhaust portion; the lower leading edge being at the intake portion; the exhaust portion having a lower edge curved under in surface of revolution the radius of which is larger than the intake portion curved edge; the exhaust portion lower curved edge being semi-conical in shape with the apex of the cone pointing inward and converging toward a slot in the fan blade means between the intake portion and the exhaust portion; and fins mounted on an external surface of the substantially hemispherical domelike member for rotation therewith. |
| Country of Publication | United States |
| Language | English |
| Format | Pages: v |
| System Entry Date | 2001 May 13 |
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Last Updated: 02/12/2009