Rear derailing device for bicycle gears

Details Rear derailing device for bicycle gears Rear derailing device for bicycle gears

1988-01-12

1989-08-15

Massie, Jerome W.

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 82, F16H 1100

Patent

active

048570362

ABSTRACT:
A rear derailing device for bicycle gears comprises a first body intended to be fixed to the frame, a second body, a lower body for driving the bicycle chain, and an articulated parallelogram joint connecting the first body to the second body. The joint has end heads which are connected to the first body and the second body respectively by swivelling hinge connections. The two elements of each hinge connection have facing surfaces with frontal teeth which cooperate with each other to hold the two elements of the hinge connection in a preselected relative position. The elements can be locked in this position by a locking screw arranged to press the facing surfaces against each other.

REFERENCES:
patent: 3181383 (1965-05-01), Juy
patent: 4692131 (1987-09-01), Nagano

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