Propulsion unit for wheelchairs

Details Propulsion unit for wheelchairs Propulsion unit for wheelchairs

2006-06-02

2010-02-23

Morris, Lesley (Department: 3611)

Land vehicles

Wheeled

Occupant propelled type

Reexamination Certificate

active

07665754

ABSTRACT:
A propulsion unit for a wheelchair wheel with a track. The propulsion unit comprising a body having a front portion, a rear portion and a handle, at least three rollers pivotally mounted to the body, front and rear friction elements positioned in the front and rear portions of the body respectively. When the handle is pressed forward the wheel is propelled forward and when the handle is pressed rearward the wheel is propelled rearward.

REFERENCES:
patent: 4834413 (1989-05-01), Patel et al.
patent: 5984334 (1999-11-01), Dugas
patent: 6443252 (2002-09-01), Andes
patent: 7341267 (2008-03-01), Vroom
patent: 2002/0043781 (2002-04-01), Mitchell

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