Bizarre Patents
An aircraft having vertical takeoff and landing capability provided with at least first and second laterally extending paddle wheels rotatable on a central axis perpendicular to the longitudinal axis of the aircraft fuselage and between its nose and tail.
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| Number | Title | Issue Date |
| 7198554 | Method of making valve guide having textured external surface A cylindrical valve guide having a roughened external surface texture from about 50 to about 100 microinches permits effective amounts of lubricating oil to become trapped or contained by such roughened external surface and thereby facilitates subsequent press fitti... | 04/03/2007 |
| 6918817 | Cleaning tool and method A hand-held cleaning tool for foam buffing pads includes a paddled cleaning wheel mounted for rotation on a shaft attached to the end of a pistol grip handle. The paddle cleaning wheel grips the foam buffing pad. The cleaning tool is operated by holding the same in ... | 07/19/2005 |
| 5456630 | Cleaning and dressing tool for buffing pads A hand-held cleaning and dressing tool for foam buffing pads includes a series of toothed cleaning wheels mounted for independent rotation on a common shaft attached to the end of a pistol grip handle. The cleaning wheels are shrouded to help capture cake... | 10/10/1995 |
| 4677793 | Method and apparatus for high tolerance polishing of a workpiece surface Apparatus for finishing a workpiece comprising a resilient abrasive finishing element arranged for motion relative to a workpiece surface and in pressure engagement therewith. Methods of finishing a workpiece employing this apparatus are also disclosed. B... | 07/07/1987 |
| 4237853 | Dresser design A dresser for roughening the surface of an abrasive wheel has a cutter means for rotation in contact with the abrasive wheel. The cutter means includes a plurality of cutter teeth mounted on a cutter shaft. Ball bearings at each end of the cutter shaft pe... | 12/09/1980 |
