The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 12, 1985
Filed:
Sep. 16, 1982
Applicant:
Inventor:
Donald L Burrows, Utopia, CA;
Assignee:
Everest and Jennings Canadian Limited, Concord, CA;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B60B / ;
U.S. Cl.
CPC ...
301 / ; 301 / ; 301 / ; 192 / ; 192 95 ;
Abstract
A drive mechanism for wheelchairs comprises a drive member and a driven wheel hub member journalled on the drive member for rotation about an axis. The drive and driven members each have axial grooves, the grooves in the drive member and the driven member being adapted to be aligned thereby to define axial keyways. A clutch member is rotatably mounted on the drive member and provides axially extending keys. The clutch is movable between an engaged position in which the keys are inserted into the keyways and a disengaged position in which the keys are removed from the keyways.