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US07896377B2 Lever enhanced pedaling system with multi-speed control system 失效
杠杆增强踩踏系统与多速度控制系统

Lever enhanced pedaling system with multi-speed control system
Abstract:
A multi-speed system configured to increase the speed or decrease the pedaling effort of a lever propelled bicycle. The multi-speed system is composed of a manual control device 70, mounted on the frame close to the rider's hand placement on the handle bars, and other connected components configured to change wheel rotation per pedal. It has the ability to transfer manual force to the transmission means to change propulsion speed and effort. Depressing a control lever 2 down will allow the rider to increase in speed and lifting the control lever 2 up would allow the rider to decrease pedaling effort.
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