| 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. |
