Multistage freewheel for bicycles

Details Multistage freewheel for bicycles Multistage freewheel for bicycles

1976-11-26

1978-05-16

Herrmann, Allan D.

Machine element or mechanism

Gearing

Toothed gear and recirculated unconnected elements

192 64, F16H 1104, F16D 4118

Patent

active

040892310

ABSTRACT:
A multistage freewheel for a bicycle, comprising a plurality of at least two or more sprockets which are rotatably and axially movably supported to a cylindrical support, each of which sprockets is individually applied with rotary resistance. When a driving chain is shifted by a derailleur the rotary resistance is increased following the chain's shifting motion and the rotary resistance is less at the single sprocket, thereby securing safety in the bicycle operation.

REFERENCES:
patent: 3554340 (1971-01-01), Shimano et al.
patent: 3900088 (1975-08-01), Ozaki
patent: 3972245 (1976-08-01), Allen

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