Power wheelchair
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
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Aug 17, 2010
Grant Date -
Oct 30, 2008
app pub date -
Apr 25, 2007
filing date -
Apr 25, 2007
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A power wheelchair includes a frame, on which a pair of front wheel sets, a pair of middle wheel sets, a pair of rear wheel sets and a pair of elastic devices are provided. Each of the front wheel sets includes a front wheel mount having a first connection portion pivoted to the frame, and a second connection portion connected to a front wheel. Each of the middle wheel sets includes a middle wheel mount having a first connection portion pivoted on the frame, and a second connection portion, connected to a middle wheel. The elastic device are provided between the front wheel mounts and the middle wheel mounts respectively to cushion a swing of the front wheel set and the middle wheel set relative to the frame.
First Claim
Family
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