Bicycle transmission assembly

Details Bicycle transmission assembly Bicycle transmission assembly

1996-09-04

1998-03-24

Schoeppel, Roger J.

Endless belt power transmission systems or components

Control for variable input to output speed-ratio

Including belt shiftable axially from one to another surface...

474 80, F16H 706

Patent

active

057306702

ABSTRACT:
Transmission assembly, particularly for bicycles or the like, having an inside box-like body, a first chain ring associated with a pedal crank shaft and connected to a pinion by a first chain, and a second chain ring associated with a second shaft and rotating rigidly with said pinion. A second chain is associated with the second chain ring and is adapted to transmit the motion to a gearshift assembly constituted by a plurality of gears that can be selectively associated with the second chain by a derailleur. The gearshift assembly is rigidly coupled to a hub that supports a wheel in a cantilevered manner outside the box-like body.

REFERENCES:
patent: 4681557 (1987-07-01), Hillman
patent: 4919644 (1990-04-01), Carlyle
patent: 4995626 (1991-02-01), Montague
patent: 5186482 (1993-02-01), Sapper

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