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
1984-08-06
1986-09-23
Jillions, John M.
Endless belt power transmission systems or components
Control for variable input to output speed-ratio
Including belt shiftable axially from one to another surface...
74475, 74527, F16H 718, B60K 2000, G05G 506
Patent
active
046133194
ABSTRACT:
A speed change device for a bicycle includes a speed change lever and a front derailleur with a chain guide supported movably in reciprocation and axially of a plurality of front chain gears. The chain guide includes an inner plate having an inwardly enlarged portion enlarge toward a low speed front chain gear with respect to a high speed front chain gear. The inwardly enlarged portion is located in a range of movement of the driving chain in which the chain engages with a high speed front chain gear. The chain guide includes an outer plate having an outwardly enlarged portion enlarged toward the high speed front gear with respect to the low speed one. The outwardly enlarged portion is located within a range of movement of the chain in which the chain engages with the low speed front chain gear. The speed change lever includes a lever body and a fixing member for rotatably supporting the lever body. A positioning mechanism and a sound generating mechanism are provided between the lever body and the fixing member.
REFERENCES:
patent: 4223562 (1980-09-01), Nagano
patent: 4232564 (1980-11-01), Yamasaki
patent: 4279605 (1981-07-01), Egami
patent: 4454784 (1984-06-01), Shimano
patent: 4470823 (1984-09-01), Shimano
patent: 4486182 (1984-12-01), Coue 474 80
Jillions John M.
Shimano Industrial Company Limited
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