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Electrically Assisted Cycle Kit

  • US 20130311020A1
  • Filed: 04/24/2013
  • Published: 11/21/2013
  • Est. Priority Date: 04/24/2012
  • Status: Active Grant
First Claim
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1. An electrically assisted cycle kit for fitting to a pedal cycle, the kit comprising:

  • an electric motor for assisting pedal cycle motion of the pedal cycle;

    a battery for powering the electric motor;

    a gear tooth sensor for providing a gear motion signal indicative of at least one of a speed of motion and an acceleration of motion of gear teeth and valleys of a gear sprocket of the pedal cycle relative to the gear tooth sensor; and

    a controller for controlling the drive of the electric motor in dependence on the gear motion signal provided by the gear tooth sensor.

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