Human powered vehicle and propelling mechanism thereof
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United States of America Patent
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Aug 24, 2004
Issued Date -
N/A
app pub date -
Dec 18, 2001
filing date -
Jun 18, 1999
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A human propelled vehicle, e.g., bicycle, has a propelling mechanism that allows crank arms longer than eight inches. The propelling mechanism includes first and second shafts coupled to first and second crank arms and trained to a gear train, which is trained to a conversion mechanism, which is trained to an output shaft. The crank arms extend rearwardly from their shafts so that the axes of the pedals mounted to the crank arms reciprocate in opposite directions through an arc that passes behind the bottom bracket axle.
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