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
1979-02-12
1980-09-23
Braun, Leslie
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 718
Patent
active
042235626
ABSTRACT:
A front derailleur for a bicycle has a chain guide having two opposite guide plates spaced at an interval larger than the width of a driving chain and an outer guide plate of the two guide plates is provided with a chain face which is formed at a position substantially intermediate lengthwise and at an upper portion widthwise of the same and radially outward to a chain sprocket and projects toward an inner guide plate. The chain guide face and the inner surface of the inner guide plate are spaced at an interval slightly larger than the width of the driving chain and smaller than the interval between the two guide plates.
REFERENCES:
patent: 2770142 (1956-11-01), Margrey
patent: 3184993 (1965-05-01), Swenson
patent: 3960025 (1976-06-01), Jay
patent: 4078444 (1978-03-01), Huret
Egami Tetufumi
Fujimoto Hideaki
Mizuno Toshio
Nagano Masashi
Berman Conrad
Braun Leslie
Shimano Industrial Company Limited
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