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US 6,685,586 B2Granted
Rocker arm assembly for the rear derailleur of a bicycle
AssigneeCampagnolo S.r.l.
InventorGiuseppe Dal Pra′
Life of this patent
Estimating the term…
Abstract
Rocker arm assembly for the rear derailleur of a bicycle, comprising an outer plate (12) carrying a pivot pin (32), an inner plate (10) and a pair of idle transmission wheels (14) arranged between the outer plate (12) and the inner plate (10). The inner plate is made of metallic material and the outer plate is made of a structural fibre fabric incorporated in a thermoplastic material matrix.
Claims8
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.
2 more elements
Dependencies are inferred from the claim text.