Auxiliary chain tension system for bicycles

Details Auxiliary chain tension system for bicycles Auxiliary chain tension system for bicycles

1995-08-28

1997-08-26

Johnson, Brian L.

Land vehicles

Wheeled

Occupant propelled type

474 80, 474 82, 474101, 474117, 474133, 280236, B62J 3900, F16H 700

Patent

active

056604076

ABSTRACT:
An auxiliary chain tension system for a rear derailleur in a bicycle, the auxiliary chain tension system being composed of: an elongated member having two opposed ends, one end being formed to secure the member in a fixed position relative to the rear wheel fork of the bicycle so that the other end extends rearwardly from the rear wheel fork, the other end of the elongated member being formed to retain; a spring retention member securable to a pulley shield of the derailleur; and a tension spring having a first end connectable to the other end of the elongated member and a second end connectable to the spring retention member for imposing an auxiliary tension force on the bicycle drive chain.

REFERENCES:
patent: 2108941 (1938-02-01), Morgan
patent: 5207619 (1993-05-01), Klein et al.
patent: 5397275 (1995-03-01), McJunkin, Jr.
patent: 5518458 (1996-05-01), Liu

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