Bicycle derailleur chain damper

Details Bicycle derailleur chain damper Bicycle derailleur chain damper

1998-10-28

2000-10-24

Hannon, Thomas R.

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 708

Patent

active

061359041

ABSTRACT:
A damper that functions in cooperation with the chain take-up to introduce improved smoothness during bicycle operation. The hydraulic damper is a cylinder that has a spring driven piston mounted in it. The spring is controlled by a fluid within the cylinder. This fluid smoothes out or otherwise controls jerky or other unwanted vibration by applying fluid forces to the take-up piston so that a relatively constant pressure is applied against the drive chain. This allows that chain to flow over the sprockets and chain slides without, looseness, unintentional gear shifts or objectionable noise.

REFERENCES:
patent: 3896679 (1975-07-01), Huret et al.
patent: 4430978 (1984-02-01), Huret
patent: 4552546 (1985-11-01), Ishikawa
patent: 4850940 (1989-07-01), Nagano
patent: 4960402 (1990-10-01), Klein et al.
patent: 5397275 (1995-03-01), McJunkin, Jr.
patent: 5669840 (1997-09-01), Liao

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