Shock absorber

Details Shock absorber Shock absorber

1989-02-21

1991-02-05

Reger, Duane A.

Brakes

Internal-resistance motion retarder

Including seal or guide

188315, F16F 936

Patent

active

049897012

ABSTRACT:
A shock absorber comprises a cylinder assembly defining a working chamber filled with a hydraulic working fluid and disposed therein a piston, and a fluid reservoir chamber filled with the hydraulic working fluid and a pneumatic working fluid, a communication path for connecting the working chamber and the fluid reservoir chamber for fluid communication therebetween, and a check and flow restriction assembly disposed within the communication path for selectively establishing and blocking fluid communication between the working chamber and the fluid reservoir chamber, the check and seal assembly includes a fluid check valve and a fluid flow restriction arranged in series, the flow restriction permitting pneumatic and hydraulic fluid flow directed to the fluid reservoir chamber during piston bounding stroke and providing flow restriction for the hydraulic fluid flow, and the check valve blocking fluid communication between the fluid reservoir chamber and the working chamber during piston rebounding stroke and permitting hydraulic fluid flow during the piston bounding stroke.

REFERENCES:
patent: 4482036 (1984-11-01), Wossner et al.
patent: 4527673 (1985-07-01), Szcupak
patent: 4542811 (1985-09-01), Miura

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