Electric-motored bicycle
AssigneeYamaha Hatsudoki Kabushiki Kaisha
InventorNozomu Takata
Life of this patent
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Abstract
Several embodiments of electric power assisted bicycles wherein an electrical motor is employed for assisting in the pedaling of the bicycle. The embodiments all include an arrangement for changing the state of the electrical power in response to pushing of the bicycle. In some embodiments, the circuit for the electric motor is opened when the bicycle is pushed rearwardly so as to avoid undue resistance to the pushing as might occur due to the fact that the motor would operate as a generator under this condition and provide an electrical load. In other embodiments, the electric motor is energized upon pushing so as to assist in pushing the bicycle.
Claims20
A wheeled vehicle having at least one driven wheel, occupant driving means drivingly connected to said driven wheel for driving said driven wheel under manual power, an electrical motor attached to said vehicle for selectively driving said driven wheel, control means for operating said electrical motor in response to operator demand, and means for sensing a pushing of said vehicle for changing a state of said control means in response to a pushing of said vehicle.
Dependencies are inferred from the claim text.