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
1995-08-21
1997-03-04
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...
F16H 906
Patent
active
056073674
ABSTRACT:
A linear derailleur for positioning a drive chain in response to displacement of a control cable. The derailleur includes a linear actuator having a substantially uniform actuation ratio over the range of motion of the actuator and, hence, derailleur. The linear actuator also has a mean actuation ratio over its range of motion equal to Cos .theta.:1, where .theta. equals the angle of inclination of the actuator.
REFERENCES:
patent: 4469478 (1984-09-01), Weiss
patent: 5102372 (1992-04-01), Patterson et al.
patent: 5197927 (1993-03-01), Patterson et al.
patent: 5356348 (1994-10-01), Bellio et al.
patent: 5524501 (1996-06-01), Patterson et al.
Exhibits I-V, photographs of Simplex front derailleur, known to exist since at least 1985, public use and sale, Group A.
Exhibits VI-IX, photographs of Campagnolo front derailleur, known to exist since at least 1989, brochures, public use and sale, Group A.
Exhibit X, brochure of Campagnolo front derailleur, known to exist since at least 1989, brochures, public use and sale, Group A.
Exhibit XI, advertisement of Elgin Molded Plastics front derailleur, known to exist since at least 1987, brochures, public use and sale, Group A.
Francis Ralph C.
Schoeppel Roger J.
SRAM Corporation
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