Suspension structure for an electric wheelchair

Details Suspension structure for an electric wheelchair Suspension structure for an electric wheelchair

2007-12-11

2007-12-11

Cheng, Joe H. (Department: 3609)

Land vehicles

Wheeled

Running gear

C280S124100, C280S124130, C180S907000, C180S065510

Reexamination Certificate

active

11194859

ABSTRACT:
A suspension structure for an electric wheelchair comprises a frame, two cantilevers, two drive wheels, two rollers, four wheel-mounting assemblies, two front wheel assemblies, two draglines and two rear wheel assemblies. When surmounting a barrier, the front wheel assemblies will pivot upward and press down the drive wheels through the cantilevers, thus improving the road holding performance of the drive wheels. In other words, the drive wheels and the front wheels can move interactively to surmount the barrier.

REFERENCES:
patent: 6070898 (2000-06-01), Dickie et al.
patent: 6129165 (2000-10-01), Schaffner et al.
patent: 6776430 (2004-08-01), White et al.
patent: 6923278 (2005-08-01), Mulhern et al.
patent: 7150463 (2006-12-01), Liao
patent: 2003/0168264 (2003-09-01), Goertzen et al.

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