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
1994-12-06
1997-01-28
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 900
Patent
active
055973663
ABSTRACT:
A bicycle rear derailleur is provided for shifting a chain from one sprocket to another of a multiple freewheel which includes a plurality of sprockets each having a lowermost edge portion. The derailleur comprises a control mechanism pivotally mounted to a bicycle frame by a first pivot shaft which is parallel to the hub shaft, and a chain guide pivotally mounted to the control mechanism by a second pivot shaft which is parallel to the hub shaft. The chain guide rotatably supports an upper guide wheel and a lower tension wheel. The chain guide is biased in a chain tensioning direction by a spring and controlled by the control mechanism to move axially of the hub shaft. The guide wheel has an uppermost edge portion located ahead of the lowermost edge portion of each sprocket which the chain engages. The control mechanism is freely pivotable about the first pivot shaft without any spring bias at least within a predetermined range.
REFERENCES:
patent: 3974707 (1976-08-01), Nagano
patent: 4183255 (1980-01-01), Leiter
patent: 4226132 (1980-10-01), Nagano et al.
patent: 4348198 (1982-09-01), Shimano
patent: 4403978 (1983-09-01), Huret
patent: 4437848 (1984-03-01), Shimano
patent: 4575365 (1986-03-01), Nagano
patent: 4610644 (1986-09-01), Nagano
patent: 4618332 (1986-10-01), Nagano
patent: 4619632 (1986-10-01), Nagano
patent: 4692131 (1987-09-01), Nagano
patent: 4731045 (1988-03-01), Nagano
patent: 4755162 (1988-07-01), Nagano
patent: 4789379 (1988-12-01), Ozaki et al.
patent: 4832662 (1989-05-01), Nagano
patent: 4895553 (1990-01-01), Nagano
patent: 5213549 (1993-05-01), Blanchard
patent: 5238458 (1993-08-01), Ishibashi
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