Top pull front derailleur

Details Top pull front derailleur Top pull front derailleur

1996-06-19

1998-07-14

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 6100

Patent

active

057795819

ABSTRACT:
A bicycle front derailleur includes a base member for attachment to a bicycle frame, a chain guide for guiding a chain laterally inwardly and outwardly of the bicycle frame, an inner link member having a first end pivotably coupled to the base member and a second end coupled to the chain guide, an outer link member having a first end pivotably coupled to the base member and a second end coupled to the chain guide, biasing means for biasing the chain guide laterally inwardly, and an actuating arm fixed to the outer link member for integral movement therewith. The actuating arm extends laterally outwardly from the outer link member so that pulling the actuating arm upwardly causes the chain guide to move laterally outwardly.

REFERENCES:
patent: 4226130 (1980-10-01), Isobe
patent: 5104358 (1992-04-01), Kobayashi

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