Damping force control type hydraulic shock absorber

Details Damping force control type hydraulic shock absorber Damping force control type hydraulic shock absorber

1997-11-07

1999-11-02

Schwartz, Chris

Brakes

Internal-resistance motion retarder

Valve structure or location

1882665, 18832222, F16F 934

Patent

active

059752580

ABSTRACT:
A damping force control type hydraulic shock absorber of the present invention includes a cylindrical valve member. One end of the cylinder valve member is closed. Also, the shock absorber includes annular inner and outer seal portions, and a valve seat provided there-between, all of which project from an inner wall of a bottom portion of the valve member and are concentric with one another. A disk valve is secured at an inner peripheral portion thereof to the inner seal portion and abuts at an outer peripheral portion thereof on the valve seat. A retainer disk stacks on the disk valve. An annular seal ring abuts at an inner peripheral portion thereof of an outer peripheral edge portion of the retainer disk, and is secured at an outer peripheral portion thereof to the outer seal portion. A blocking member is connected to an open end of the valve member so that a pilot chamber is formed by the retainer disk, the seal ring and the blocking member.

REFERENCES:
patent: 4646883 (1987-03-01), Tanaka
patent: 5529154 (1996-06-01), Tanaka
patent: 5649611 (1997-07-01), Nakadata
patent: 5655633 (1997-08-01), Nakadata

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