Suspension wheelchair and wheelchair frame
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Mar 17, 1998
Grant Date -
N/A
app pub date -
Sep 3, 1996
filing date -
Jul 14, 1994
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A wheelchair frame includes a pair of side frame assemblies, a connector connecting the two side frame assemblies, a seat, caster wheel mountings, drive wheel mountings, and a leg rest mounting. Each of the side frame assemblies have an upper frame member and a lower frame member. The upper frame member is pivotally connected at its forward end to the forward portion of the lower frame member and supported at its rearward end by a suspension support member (i.e., shock absorber) connected to the rearward end of the lower frame member. The seat is attached between the upper frame members of each side frame assembly. With this configuration, the upper frame members and the seat are free to pivot about the pivotal connection between the upper frame member and the lower frame member. In operation, the upper frame members and seat 'float' up and down on the shock absorber to provide cushioning to the user. With this novel configuration, the drive wheels, caster wheels and the lower frame members remain relatively rigid and therefore maintain stability, wheel alignment and maneuverability of the wheelchair. The invention also includes a foldable embodiment of the suspension wheelchair.
First Claim
Family
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Cited Art Landscape
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