Wheelchair
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United States of America Patent
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Jun 24, 2014
Grant Date -
Mar 28, 2013
app pub date -
Aug 13, 2012
filing date -
Sep 28, 2011
priority date (Note) -
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status (Latency Note)
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Abstract
According to one embodiment, a vehicle frame, front wheel which is formed of a universal caster, a pair of rear wheels, and a lift-up wheel which is formed of a universal caster and is provided at a lower portion of the rear end part of the vehicle frame such that the lift-up wheel is capable of being elevated between a ground-contact position and a non-ground-contact position by an elevation mechanism, the lift-up wheel being configured such that the lift-up wheel, together with the front wheel, movably supports the vehicle frame in a lowered state of the lift-up wheel at the ground-contact position.
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