Patent ID: 6629903
Filing Date: 2003-10-07
Classification: B62M

Abstract:
A bicycle derailleur comprising:a mounting member that is adapted to be coupled to a portion of the bicycle; a chain guide movably coupled to said mounting member, said chain guide being adapted to shift a chain of a bicycle in a transverse direction; and a chain guide positioning mechanism including an actuating cam operatively coupled to said chain guide, said actuating cam being adapted to be coupled to a control element and arranged and configured to rotate only in one direction in response to movement of the control element to move said chain guide from a first position to a second position, said actuating cam further being arranged and configured to rotate only in said one direction in response to movement of the control element to move said chain guide from said second position to said first position, said actuating cam further being arranged and configured to at least initially move in said one direction independently of rotational movement of the chain that is being shifted by said chain guide and independently of rotational movement of a front sprocket that is coupled to the chain.