Damping force regulation device for telescope shock absorber

Details Damping force regulation device for telescope shock absorber Damping force regulation device for telescope shock absorber

1983-01-26

1985-12-31

Reger, Duane A.

Brakes

Internal-resistance motion retarder

Having a thrust member with a variable volume chamber

18832214, 18832215, F16F 9348

Patent

active

045615241

ABSTRACT:
A damping force regulation device for a telescopic shock absorber causes all the hydraulic fluid to flow through a damping force adjuster (variable orifice) which is arranged in series with damping valves, both in expansion and contraction strokes of a piston. The diameter of the orifice is variable to control the damping force over a substantial range and thereby set up a damping characteristic optimum for each specific running condition. During the expansion stroke, a check valve of a base valve is opened to eliminate short suction which would otherwise result in cavitation or noise.

REFERENCES:
patent: 2327295 (1943-08-01), Whisler
patent: 3420341 (1969-01-01), Keehn
patent: 3559776 (1971-02-01), Schultze
patent: 4313529 (1982-02-01), Kato et al.

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