Linear derailleur

Details Linear derailleur Linear derailleur

1996-07-22

1997-07-22

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

056498772

ABSTRACT:
A linear derailleur for positioning a drive chain in response to displacement of a plurality of control cables. 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: 5059158 (1991-10-01), Bellio et al.
patent: 5102372 (1992-04-01), Patterson et al.
Exhibits I-VI, photographs of front derailleur, known to exist since at least 1985, public use and sale. Manufacturer unknown.
Exhibits VII-XII, photographs of "Simplex" front derailleur, known to exist since at least 1985, public use and sale.
Exhibits XIII-XV, photographs of "Simplex" front derailleur, known to exist since at least 1985, public use and sale.
Exhibits XVI-XVII, photographs of "Campagnolo" front derailleur, known to exist since at least 1989, brochures, public use and sale.
Exhibit XVIII, advertisement of Elgin Molded Plastics front derailleur, known to exist since at lest 1987, brochures, public use and sale.

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