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
1996-09-20
1997-09-23
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 5900
Patent
active
056698402
ABSTRACT:
A tension device is secured to a derailleur system of a bicycle having a frame pivotally coupled to the bicycle for supporting a sprocket and for engaging with a chain. The tension device includes an arm having one end secured to the bicycle and having the other end secured to an auxiliary spring. A block is secured to the frame and has an extension secured to the other end of the spring. The spring may bias the frame and may tension the frame and the chain for preventing the chain from disengaging from the derailleur system.
REFERENCES:
patent: 2099477 (1937-11-01), Gruyer
patent: 2428166 (1947-09-01), Letourneur
patent: 2431513 (1947-11-01), Schwinn
patent: 3929025 (1975-12-01), Perry
patent: 4676118 (1987-06-01), Leiter
patent: 4758205 (1988-07-01), Durham
Schoeppel Roger J.
Tektro Technology Corporation
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