Derailleur for a cycle

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

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F16H 722

Patent

active

043625231

ABSTRACT:
The derailleur comprises a finger member which bears on a cam surface. The finger member is carried by an arm of a parallelogram structure. The cam surface is provided on the support of the derailleur. Preferably, the cam achieves a tri-dimensional guiding of the finger member which carries a rotary roller.

REFERENCES:
patent: 4030375 (1977-06-01), Nagano
patent: 4061048 (1977-12-01), Huret et al.
patent: 4274828 (1981-06-01), Huret

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