Patent ID: 6685586
Filing Date: 2004-02-03
Classification: B62M

Abstract:
A rocker arm assembly for use on a rear derailleur of a bicycle, the assembly comprising:an inner plate, made of a rigid metallic material, including first and second tapped holes: an outer plate, made of a plastic composite material, including first and second through apertures respectively aligned with the first and second tapped holes, and connected to the inner elate via fasteners passing through the first and second through apertures and first and second tapped holes; and first and second idle gears positioned between the inner and outer plates and aligned with a respective one of the first and second through apertures; wherein the outer plate further includes a mounting aperture and an integral projecting element, and the assembly further comprises a pin rigidly attached in the mounting aperture defining an axis, a toothed regulation wheel attached to the pin, and a worm screw, mounted in the integral element, that engages the teeth of the regulation wheel.