Endless belt power transmission systems or components – Control for variable input to output speed-ratio – Including belt shiftable axially from one to another surface...
Patent
1993-05-26
1995-06-20
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...
474140, 280261, F16H 5900
Patent
active
054256780
ABSTRACT:
A front or rear derailleur for a bicycle comprising a base, an actuating assembly and a generally U-shaped chain guide. The base is a cylindrically shaped portion of flexible material that attaches the derailleur to a host frame member of a bicycle. The actuating assembly includes an actuating arm, two actuating links, a lip, a spring and adjusting screws. The actuating assembly responds to tension from an attached shifting cable, which in turn varies the compression on the spring, forcing a first actuating link to move outwardly from, or inwardly toward, the base. The chain guide, which is integral with the actuating link, moves concomitantly with the first actuating link. The second actuating link is formed between the base and the chain guide, and maintains the chain guide in a position parallel to the host frame member of the bicycle.
REFERENCES:
patent: 3730012 (1973-05-01), Juy
patent: 3890847 (1975-06-01), Dian
patent: 4199997 (1980-04-01), Isobe
patent: 4199998 (1980-04-01), Isobe
patent: 4330137 (1982-05-01), Nagano
patent: 4816008 (1989-03-01), Leonard
patent: 5121962 (1992-06-01), Weber et al.
patent: 5213549 (1993-05-01), Blanchard
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