Shock absorber

Brakes – Internal-resistance motion retarder – Valve structure or location

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F16F 919

Patent

active

044238010

ABSTRACT:
A hydraulic shock absorber comprises a cylinder, a piston slidably fitted in the cylinder to divide a space in the cylinder into two hydraulic fluid chambers, a piston rod which is secured at its one end to the piston and extended from said one end passing through one of the two fluid chambers, and projecting out of the cylinder while being slidably supported in a rod guide at one end of the cylinder, a damping force generating members mounted on the piston for throttling a flow of hydraulic fluid between the two fluid chambers, a fluid reservoir communicated to an another of the two fluid chambers and a valve mechanism provided in a channel that communicates said another fluid chamber with the fluid reservoir, the valve mechanism comprising a check valve allowing the hydraulic fluid to flow from the fluid reservoir to said another fluid chamber and a plurality of orifices provided at a plurality of positions in the check valve for throttling the flow of the hydraulic fluid from said another fluid chamber to the fluid reservoir.

REFERENCES:
patent: 1508391 (1924-09-01), Greenwood
patent: 2320697 (1943-06-01), Binder
patent: 2726737 (1955-12-01), Chisholm
patent: 3587789 (1971-06-01), Keilholz et al.
patent: 3701402 (1972-10-01), Chelnokov et al.

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