Gear transmission mechanism for a bicycle

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

1991-08-29

1993-07-20

Focarino, Margaret A.

Land vehicles

Wheeled

Occupant propelled type

280259, 280283, 74414, B62M 102

Patent

active

052287106

ABSTRACT:
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.

REFERENCES:
patent: 594773 (1897-11-01), Bartel
patent: 613244 (1898-11-01), Chrisman
patent: 653862 (1900-07-01), Clark
patent: 1798383 (1931-03-01), Roberds
patent: 3466086 (1969-09-01), James et al.

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