Machine element or mechanism – Elements – Cranks and pedals
Patent
1994-03-28
1994-11-08
Luong, Vinh T.
Machine element or mechanism
Elements
Cranks and pedals
745941, 482 57, 474 69, 474 70, 280259, G05G 114
Patent
active
053616499
ABSTRACT:
For bicyclists having one leg shorter than the other, a crank and pedal assembly is provided to more evenly distribute the forces exerted by both legs when pedaling a bicycle. The crank and pedal assembly includes a drive axle rotatably mounted on a bicycle frame, and a chainwheel eccentrically mounted on the axle. A pair of crank arms extend generally perpendicularly away from the drive axle in opposite directions from one another, and pedals are rotatably mounted to the free ends of each crank arm in a traditional manner. The pedals are so mounted, however, to position the bottoms of the balls of the rider's feet to be offset from the axis of rotation of the respective pedals by the same distance but in opposite directions when the crank arms are vertically disposed. More specifically, the pedals are mounted such that the balls of the rider's feet are each offset a distance equivalent to one-half of the difference in the lengths of the rider's legs. The pedal for the rider's shorter leg is mounted so as to position the ball of the respective foot above the pedal spindle. Conversely, the pedal for the rider's longer leg is mounted so as to position the ball of the respective foot below the pedal spindle.
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High Sierra Cycle Center
Luong Vinh T.
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