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
1988-07-05
1989-06-13
Bui, Thuy 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...
F16H 900
Patent
active
048388378
ABSTRACT:
A rear derailleur for bicycle gears comprises an upper body which can be fixed to the bicycle frame, a lower body carrying a chain tensioning wheel for the bicycle chain and being movable relative to the upper body to bring the chain into selective engagement with a series of sprockets carried by the hub of the rear wheel of the bicycle, and a flexible cable for causing movement of the lower body. The lower body is carried by a control lever supported for rotation on a hollow cylindrical body which is rigidly connected to the upper body. A helical flexion spring is operatively interposed between the control lever and the upper body with its axis coincident with the axis of rotation of the control lever. The spring is preferably housed within the hollow cylindrical body.
REFERENCES:
patent: 4277077 (1981-07-01), Ozaki
patent: 4619632 (1986-10-01), Nagano
patent: 4637808 (1987-01-01), Nakamura
Bui Thuy M.
Campagnolo S.p.A.
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