Patent ID: 7503863
Filing Date: 2009-03-17
Classification: B62M

Abstract:
1. A motorized bicycle front derailleur comprising: a motorized front derailleur mounting member configured to be mounted to a bicycle frame, the motorized front derailleur mounting member including a front derailleur mounting portion and a motor unit mounting portion; a motor unit including a motor unit housing removably coupled to the motor unit mounting portion and an internal motor structure with an output shaft that selectively rotates about a rotation axis relative to the motor unit housing in a first rotational direction and a second rotational direction that is opposite the first rotational direction in response to operation of the internal motor structure; a linkage having a link mounted to the output shaft of the internal motor structure to move with the output shaft; and a chain guide supported by the linkage to move between at least a first chain positioning location and a second chain positioning in response to movement of the linkage; the motor unit mounting portion including a first fastener-less mating structure and the motor unit housing including a second fastener-less mating structure removably coupled to the first fastener-less mating structure, the first and second fastener-less mating structures being configured and arranged to resist rotational movement of the motor unit housing about the rotational axis of the output shaft relative to the motorized front derailleur mounting member due to a torque produced by rotation of the output shaft relative to the motor unit housing.