Hydraulic damper having leaf valve stopper

Details Hydraulic damper having leaf valve stopper Hydraulic damper having leaf valve stopper

1993-07-09

1995-08-15

Graham, Matthew C.

Brakes

Internal-resistance motion retarder

Valve structure or location

188317, F16F 934

Patent

active

054411335

ABSTRACT:
This invention relates to a hydraulic damper arranged between a vehicle chassis and a wheel axle for use in attenuating a vibration transmitted from a road surface. A leaf valve and a main valve are provided at an inner seat and an outer seat having different heights to each other arranged at outlet ports of a piston in such a way as they may be opened or closed, the leaf valve is supported at its base end by a stopper provided with a tapered or curved surface at is upper surface. The main valve is arranged in such a way as it may be floated up and down in opposition to the outer seat. A load of the main valve is set only with an inertia of a spring, so that an attenuation force can be stabilized, and the leaf valve is supported by the tapered or curved surface of the stopper when flexed, resulting in that no cracks are generated.

REFERENCES:
patent: 4352417 (1982-10-01), Stinson
patent: 4460074 (1984-07-01), Muller et al.
patent: 4484669 (1984-11-01), Kato
patent: 4624347 (1986-11-01), Mourray
patent: 4721130 (1988-01-01), Hayashi
patent: 4809829 (1989-03-01), Hummel et al.
patent: 4964493 (1990-10-01), Yamaura et al.

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