Machine element or mechanism – Elements – Cranks and pedals
Patent
1997-03-17
1999-01-19
Marmor, Charles A.
Machine element or mechanism
Elements
Cranks and pedals
74143, B62M 102
Patent
active
058603298
ABSTRACT:
A unidirectional power drive mechanism operated by a plurality of crank arms and associated one-way clutches connecting the crank arms independently to a crankshaft arranged to provide a unidirectional power output. The crank arms are able to rotate through full revolution to drive the crankshaft in a forward direction with either one of the crank arms separately applying torque to the crankshaft, or with both crank arms together applying torque in a forward direction, but each crank arm is free to rotate rearwardly with respect to the crankshaft. This arrangement of and inclusion of the various components substantially improves many aspects of energy throughput of human powered machines.
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Battista Mary Ann
Marmor Charles A.
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