
US Patent Application No: 2002/0093,156
Number of patents in Portfolio can not be more than 2000
Assistive opening and closing devices for wheelchairs
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Jul 18, 2002
Publication date -
Sep 27, 2001
filing date -
09/965,347
serial no -
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Abstract
A wheelchair is foldable to open and closed positions. The wheelchair includes first and second frame members that are movable with respect to each other during folding of the wheelchair. A biasing member is connected to at least one of the frame members. Movement of the frame members with respect to each other during folding of the wheelchair creates a biasing force in the biasing member urging the wheelchair to an open position.
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