Variable-damping-force shock absorber

Details Variable-damping-force shock absorber Variable-damping-force shock absorber

1983-02-02

1986-11-04

Reger, Duane A.

Brakes

Internal-resistance motion retarder

Having a thrust member with a variable volume chamber

188282, 18832222, 188299, F16F 950

Patent

active

046206191

ABSTRACT:
A variable-damping-force shock absorber such that the damping force determined through an orifice selected by an orifice adjuster according to the driver's preference can further automatically be increased during extension for improvement in road-holding ability and decreased during compression for improvement in riding comfort. The shock absorber according to the present invention comprises an annular member formed with an orifice and a disk valve disposed on top of the annular member. During extension, the disk valve is closed for allowing fluid to by-pass through an orifice of the annular member; during compression, the disk valve is opened for additionally allowing fluid to by-pass through the annular member. Further, since the various elements for adjusting the damping force are completely housed within the piston rod, it is possible to increase the stroke of the piston rod.

REFERENCES:
patent: 2089656 (1937-08-01), Magrum
patent: 3003594 (1961-10-01), De Carbon
patent: 3763970 (1973-10-01), Anderson
patent: 3827538 (1974-08-01), Morgan
patent: 4313529 (1982-02-01), Kato et al.
patent: 4419804 (1983-12-01), Axthammer

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