| 摘要 |
It is disclosed a gear-driven bicycle the mechanism of which converts the oscillation of the levers-arms (2) into rotational motion of the wheel (22). The motion is transmitted from pedals (7) via the spring (6) to the rear part (10) of the lever-arm ending with a fork where a great-diameter conical gear (13) permanently meshed with the respective small-diameter conical gear (17) is fixed; from the conical gear (17), the motion will be transmitted through a shaft (18) to two other intermeshed conical gears (19,20) and therefrom -through the shaft (21)- to the wheel (22). |
