Shock absorber for motor vehicle

Details Shock absorber for motor vehicle Shock absorber for motor vehicle

1975-11-12

1976-09-21

Kunin, Stephen G.

Brakes

Internal-resistance motion retarder

Resistance alters relative to direction of thrust member

188322, F16F 948

Patent

active

039813800

ABSTRACT:
A shock absorber for a motor vehicle suspension includes a piston construction having flow control valving that becomes more restrictive during the life of the shock absorber to compensate for the reduction of friction damping in the suspension during usage. The piston valving includes a flow control passage and an annular land which forms a valve seat about one end of the passage. A valve element having an organic material on one face engages the land. A restrictive orifice is provided by either a recess in the facing material or a recess in the land. During the life of the shock absorber, the organic material will be plastically deformed and the restrictive orifice will be progressively closed whereby resistance to the movement of the shock absorber piston will be gradually increased during the life of the shock absorber.

REFERENCES:
patent: 2732039 (1956-01-01), Funkhouser et al.
patent: 2740500 (1956-04-01), Brundrett et al.
patent: 3470986 (1969-10-01), Whisler, Jr.
patent: 3874487 (1975-04-01), Keijzer et al.

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