Land vehicles – Wheeled – Occupant propelled type
Patent
1996-05-31
1998-04-28
Pike, Andrew C.
Land vehicles
Wheeled
Occupant propelled type
2802501, 297DIG4, 188 2F, 74384, 74405, B62M 114
Patent
active
057435448
ABSTRACT:
An improved wheelchair wheel and hub assembly is described that interposes reduction gearing between the handring or rotatable hand wheel and the drivewheel of the assembly. This gearing provides some mechanical advantage to users who may lack sufficient strength to propel themselves in a conventional wheelchair, especially in a home environment. A single speed assembly is described which is operated conventionally by rotating handrings either forward or rearward to produce a corresponding rotation of the drive wheel but, unlike conventional wheels, a complete revolution of the handring results in only a partial revolution of the drive wheel. In the hub of the assembly is a wheel locking mechanism which enables the wheel to be easily and positively locked for the safety of the user, preventing rotation of the wheel in either direction. Additionally, a ratcheting mechanism is incorporated into the hub design which can be engaged to allow forward rotation but prevent rearward rotation of the drive wheels.
REFERENCES:
patent: 3563568 (1971-02-01), Sasse et al.
patent: 4274650 (1981-06-01), Gilles
patent: 4727965 (1988-03-01), Zach et al.
patent: 5037120 (1991-08-01), Parisi
patent: 5160156 (1992-11-01), Menoon
patent: 5211414 (1993-05-01), Galumbeck
patent: 5236398 (1993-08-01), Barnett
patent: 5301971 (1994-04-01), Brereton
patent: 5362081 (1994-11-01), Beidler et al.
LandOfFree
Wheelchair drive system with ratchet and wheel lock does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Wheelchair drive system with ratchet and wheel lock, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Wheelchair drive system with ratchet and wheel lock will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1526034