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
1995-03-31
1996-11-05
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...
745943, 280238, F16H 5900
Patent
active
055710565
ABSTRACT:
The derailleur cable-collet system is an automatic pedal-rate to wheel-rate adjusting system. Pedal pressure is sensed at the crankshaft hub and electronically compared to pedal-pressure threshold values entered by the rider into an electronic circuit. Pedal velocity is sensed at the front sprocket and electronically compared to velocity threshold values. Shifting decision logic is relayed to feed battery current into solenoid-driven collets that move derailleur cables. An arc-jaw collet moves derailleur cable in one direction, and employs spring-forms for structure and bias. A distribution circuit senses travel limits of derailleur arms and redirects cable travel to another derailleur chain-guiding apparatus. A pedal-position sensor contributes to a pedal shifting time circuit that minimizes chain force during sprocket-shifting actions.
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Gilbert Raymond D.
Schoeppel Roger J.
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