Wheelchair
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Oct 2, 1990
Grant Date -
N/A
app pub date -
May 13, 1988
filing date -
May 13, 1988
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A wheelchair is provided with an endless track drive for travel over rough ground. The endless track drive is detachably connected to the wheelchair by a frame such that a lower run of each of the endless tracks is located adjacent a lower periphery of each wheel. The chair in the wheelchair is kept low so that the occupant is not lifted so high as to experience a substantially different elevation when travelling on the endless track as when traveling on the wheels. A suspension preferably in the form of a flexible sheet allows one forward end of an endless track to be moved vertically independently of the forward end of the other endless tracks. Preferably, the endless drive is an attachment that is easily clamped to the wheelchair and is made mostly of plastic that is lightweight and easily cleaned and provides a low cost for the attachment.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
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