Electric power-assist system for manually-operated vehicle

Details Electric power-assist system for manually-operated vehicle Electric power-assist system for manually-operated vehicle

2006-11-13

2008-08-12

Ip, Paul (Department: 2837)

Electricity: motive power systems

Constant motor current, load and/or torque control

C318S430000, C318S434000, C318S466000, C180S446000

Reexamination Certificate

active

07411366

ABSTRACT:
An electric power-assist system for a manually operated vehicle, such as a bicycle, has a pedal with Hall sensors for producing a signal representing a rotational speed of the pedal, and an electric motor for power assisting the driving force of the bicycle. A speed counter, speed decision block, up/down counter, and comparator are provided so that the power assist by the electric motor increases or degreases, as the speed of the manual controlling device increases or decreases, respectively.

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U.S. Appl. No. 11/559,139 to Kang et al., filed Nov. 13, 2006.

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