Cycle

Details Cycle Cycle

B - Operations, Transporting

62

K

280/28

B62K 11/00 (2006.01) B62M 6/70 (2010.01)

Patent

CA 1070727

ABSTRACT OF THE DISCLOSURE An electrically assisted cycle wherein the electrical assistance is provided by an electric drive assembly carried on the frame of the cycle and powered by a battery also carried by the frame. The output of the drive assembly is coupled to the driven wheel of the cycle so that operation of the electric drive assembly can propel the cycle. The drive assembly is mounted on the frame for limited movement relative to the frame against the action of a resilient bias provided by rubber mounting bushes. An electrical switch is operated by movement of the drive arrangement relative to the frame and the electrical switch is arranged in the energising circuit of the motor of the electric drive assembly. The switch is operated by movement of the drive assembly from a rest position to a position wherein the rubber bushes are stressed. Until the switch is so operated the motor cannot be energised. Movement of the drive arrangement relative to the frmae is effected by the rider applying driving force to the pedal of the cycle. Thus until the rider of the cycle starts to propel the cycle by pedalling to the electric motor cannot be energised to aid the rider. Similarly should the rider cease pedalling then immediately the motor will return under the resilient bias to its rest position and the motor will be de-energised by opening of the switch.

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