Control device which provides a plurality of pre-established and

Details Control device which provides a plurality of pre-established and Control device which provides a plurality of pre-established and

1982-06-24

1985-03-12

Staab, Lawrence 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...

74473P, 474 78, F16H 1108

Patent

active

045042500

ABSTRACT:
A control device for shifting gears on a cycle wherein a hand lever is operational coupled by a semi-rigid control tie which is coupled to the transmission assembly at the hub. The transmission assembly with a link mechanism which is angularly pivoted by the control tie thereby moving a rack having two at least partly superposed pawls which engage notches in a rack which is coupled to a pin. The pin is slidable mounted so that the pawls can position the pin as required for shifting the chain guide. The extreme notches of the rack are partially obturated to prevent shifting above and below the proper sprocket prevent damage to the device.

REFERENCES:
patent: 3475981 (1969-11-01), Gerard
patent: 4198873 (1980-04-01), Nagano et al.
patent: 4267744 (1981-05-01), Yamasaki
patent: 4322209 (1982-03-01), Shimano
patent: 4384864 (1983-05-01), Bonnard

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