Variable damping force shock absorber

Details Variable damping force shock absorber Variable damping force shock absorber

1991-05-28

1993-09-07

Oberleitner, Robert J.

Brakes

Internal-resistance motion retarder

Valve structure or location

188299, 188319, 188285, F16F 900

Patent

active

052420388

ABSTRACT:
A variable damping force shock absorber comprises a pressure cylinder forming a working chamber having first and second portions operable to store damping field. A valve is provided to control a first flow of damping fluid between said first and second portions of said working chamber during compression or rebound of the shock absorber. A bypass passageway is in fluid communication with the first and second portions of the working chamber. An angularly adjustable flow restrictor is provided for regulating a second flow of damping fluid through the bypass passageway. A pressure chamber is in fluid communication with the first (or the second portion) of the working chamber and the valve. The flow restrictor is operable to regulate also a third flow of damping fluid displaced out of the pressure chamber.

REFERENCES:
patent: 4159756 (1979-07-01), Murakami et al.
patent: 4754855 (1988-07-01), Kuwana et al.
patent: 4821851 (1989-04-01), Kruckemeier et al.
patent: 4826207 (1989-05-01), Yoshioka et al.
patent: 4905799 (1990-03-01), Yamaoka et al.
patent: 4953671 (1990-09-01), Imaizumi
patent: 4964493 (1990-10-01), Yamaura et al.
patent: 5044474 (1991-09-01), de Kock

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