Shock absorber with improved back check and anti-dump valve mech

Details Shock absorber with improved back check and anti-dump valve mech Shock absorber with improved back check and anti-dump valve mech

1980-02-04

1982-08-31

Nozick, Bernard

Brakes

Internal-resistance motion retarder

Valve structure or location

13751627, 137504, F16F 920

Patent

active

043467946

ABSTRACT:
A shock absorber of the direct acting type for vehicles in which improved riding characteristics are obtained by providing an additional back check valve mechanism and anti-dump valve mechanism. Both valve mechanisms are normally biased in a closed position, are opened in response to an initial pressure increase and move into a second closed position when pressure conditions reach a predetermined value above the lower initial pressure increase level. The back check valve mechanism can be made responsive either to the pressure in the compression space or the rebound space. The anti-dump valve mechanism is carried by the piston and controls initial and low pressure flow between the compression space and rebound space.

REFERENCES:
patent: 2500708 (1950-03-01), Rossman
patent: 2507266 (1950-05-01), Patriquin
patent: 2507267 (1950-05-01), Patriquin
patent: 2907414 (1959-10-01), Patriquin
patent: 3181656 (1965-05-01), Damon
patent: 3213973 (1965-10-01), Damon
patent: 3503417 (1970-03-01), Toda et al.
patent: 3532115 (1970-10-01), Hodil, Jr.

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