Bicycle derailleur having operating forces disposed on opposite

Details Bicycle derailleur having operating forces disposed on opposite Bicycle derailleur having operating forces disposed on opposite

1997-04-29

1999-04-27

Jeffery, John A.

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, 474 78, F16H 900

Patent

active

058974512

ABSTRACT:
A bicycle derailleur includes a base member, a movable member supporting a chain guide, and a first link having first and second ends. The first end of the first link is movably mounted to the base member, and the second end of the first link is movably mounted to the movable member. A bias spring exerts a bias spring force on one side of a longitudinal axis of the first link and directed away from the movable member, and a control element is coupled to the first link for exerting a control element force on an opposite side of the longitudinal axis of the first link and directed away from the movable member. The spring and control element forces thus act primarily on the connection between the first link and the base member, thus relieving the forces from the connections between other derailleur components.

REFERENCES:
patent: 3748916 (1973-07-01), Morse
patent: 4030375 (1977-06-01), Nagano
patent: 4226132 (1980-10-01), Nagano et al.
patent: 4241617 (1980-12-01), Nagano et al.
patent: 4279172 (1981-07-01), Nagano et al.
patent: 5518456 (1996-05-01), Kojima et al.
patent: 5695421 (1997-12-01), Fukuda
European Search Report for EP 98303202.0, dated Aug. 19, 1998.

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