Pilot-operated dual check valve assembly with cross-line flow va

Details Pilot-operated dual check valve assembly with cross-line flow va Pilot-operated dual check valve assembly with cross-line flow va

1990-06-07

1991-08-06

Look, Edward K.

Motors: expansible chamber type

With motive fluid valve

For double-acting motor

91420, 91445, 1375962, F16K 1518

Patent

active

050367501

ABSTRACT:
A double operate check valve used in a hydraulic pressure circuit for locking and unlocking a vibration absorbing hydraulic cylinder included in a wheel suspension mechanism of a vehicle, which includes an improvement in its structure for providing the suspension with improved compliance with respect to road surface undulation and corresponding comfortable drive of the vehicle. The check valve pilot pistons have fluid conducting surfaces which are connected by a valve body passageway and which communicate the main fluid paths when hydraulic pressure in the pilot chamber urges the pilot pistons to open the check valves.

REFERENCES:
patent: 3274902 (1966-09-01), Kleckner
patent: 3908515 (1975-09-01), Johnson
patent: 4286432 (1981-09-01), Burrows et al.

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