Gear transmission mechanism for a bicycle

Details Gear transmission mechanism for a bicycle Gear transmission mechanism for a bicycle

B - Operations, Transporting

62

M

B62M 1/06 (2006.01) B62M 1/02 (2006.01) B62M 11/00 (2006.01)

Patent

CA 2051211

A gear transmission mechanism for driving a bicycle to run, comprising a base supporting frame attached to the down tube, the seat tube and the seat stay; a first axle inserted through the rear wheel hub of a bicycle into one hole on said base supporting frame with the two opposite ends thereof respectively coupled with two cranks; a first gear mounted on said first axle and carried by it to rotate; a second axle fastened in another hole on said base supporting frame to carry a second gear, which is engaged with said first gear, and a third gear, which is engaged with a one-way gear on said rear wheel hub, to rotate. Rotating the cranks causes the wheel hub to carry the bicycle wheels to rotate.

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