Shock absorber for a power wheelchair
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
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Jan 25, 2005
Grant Date -
Sep 9, 2004
app pub date -
Mar 5, 2003
filing date -
Mar 5, 2003
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A shock absorber is installed in a power wheelchair to absorb shocks transmitted from rear wheels of the power wheelchair. The shock absorber includes a bracket, a seat and a suspension device. The suspension device is installed between the bracket and the seat and includes two suspension springs. Each suspension spring has a different spring stiffness. The seat is pivotally connected to the bracket at a pivot point between the two suspension springs. Consequently, the suspension springs will balance absorbing shocks caused by bumps while the power wheelchair is moving.
First Claim
Other Claims data not available
