Variable damping-characteristics shock absorber with adjustable

Details Variable damping-characteristics shock absorber with adjustable Variable damping-characteristics shock absorber with adjustable

1993-04-06

1994-01-11

Le, Mark T.

Brakes

Internal-resistance motion retarder

Having a thrust member with a variable volume chamber

188282, 18832215, 188299, F16D 900, B60G 1300

Patent

active

052772837

ABSTRACT:
A shock absorber is provided a piston stroke speed dependent linear variation characteristics of damping force. The shock absorber includes variable orifices in tandem fashion for achieving linear variation characteristics of damping force according to variation of the piston stroke. One of the variable orifices is provided with variation characteristics of flow restriction for a greater variation rate of the damping force in a low piston stroke speed range, and the other is provided variation characteristics of flow restriction for a greater variation rate of the damping force in the intermediate and high piston stroke speed range. The variable orifice may be provided in a piston assembly or in the alternative in a bottom fitting in the case of a double-action type shock absorber.

REFERENCES:
patent: 2546051 (1951-03-01), Whisler, Jr.
patent: 4203507 (1980-05-01), Tomita et al.
patent: 4352417 (1982-10-01), Stinson
patent: 4561524 (1985-12-01), Mizumukai et al.
patent: 4721130 (1988-01-01), Hayashi
patent: 4724937 (1988-02-01), Fannin et al.
patent: 4826207 (1989-05-01), Yoshioka et al.
patent: 4905799 (1990-03-01), Yamaoka et al.

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