Bicycle without seat
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United States of America Patent
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Aug 2, 2011
Grant Date -
Apr 22, 2010
app pub date -
Oct 30, 2007
filing date -
Oct 30, 2006
priority date (Note) -
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status (Latency Note)
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Abstract
A bicycle according to the present invention comprises of a steering axis and an axle of rear wheel that are attached in one unit with a frame to build a form; a pair of guide members with guide holes formed therein are attached to both cut ends of the frame; a pedal axle with the attachment of pedals and a rotating gear in a unit are respectively assembled and fixed onto the guide members; the bicycle according to the present invention comprises a crankshaft of which a pair of crank cams is assembled and fixed into both cut ends of the frame; a gear which engages with the gear; and a spindle which supports a unit of the gear and a sprocket to rotate; the bicycle according to the present invention is run by a running system in which the crank cam rotates when the pedals are reciprocated up and down.
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