Bicycle derailleur having a reduced lateral width

Details Bicycle derailleur having a reduced lateral width Bicycle derailleur having a reduced lateral width

1980-04-21

1982-09-07

Staab, Lawrence 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...

474 80, 474135, F16H 722

Patent

active

043481981

ABSTRACT:
A derailleur for a bicycle, in which a supporting member is supported movably to a fixing member and a change-over frame is fixed swingably to the supporting member through a first horizontal shaft. The derailleur is characterized in that a second tubular shaft is sleeved onto the first shaft coaxially therewith, a first pulley is supported rotatably to the second shaft, a tubular chamber is formed between the outer periphery of the first shaft and the inner periphery of the second shaft, and a coiled tension spring is housed within the chamber, thereby reducing the overall lateral width of the derailleur.

REFERENCES:
patent: 3817113 (1974-06-01), Pfarrwaller
patent: 4061048 (1977-12-01), Huret et al.

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