US Patent 6938911 Folding wheelchair
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Patent abstract
A folding wheelchair includes two side frame units arranged in parallel at two sides, each side frame unit formed of two four-bar linkages arranged at different elevations, a plurality of folding bars transversely coupled between the side frame units, two sets of guide rods respectively coupled to the side frame units and adapted to guide folding of the wheelchair between the extended position and the collapsed position, and two swivel hooks for hooking on the pivot between each set of guide rods to lock the wheelchair in the extended position.
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Patent Inventor Names
Chun-Tao Lee0
Jeng-Huey Shyu0
Date of Patent
September 6, 2005
0Patent Application Number
108657880
Date Filed
June 14, 2004
0Patent Primary Examiner
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US Patent 6938911 Folding wheelchair
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