Pilot hydraulic system for operating directional control valve

Details Pilot hydraulic system for operating directional control valve Pilot hydraulic system for operating directional control valve

1986-09-05

1988-06-28

Schwartz, Larry I.

Motors: expansible chamber type

With motive fluid valve

Pilot valve

91463, 60463, 60468, F15B 908

Patent

active

047531584

ABSTRACT:
A pilot hydraulic system comprises a directional control valve having at least one pilot chamber for controlling the operation of a hydraulic actuator; and a pilot valve connected through a pilot line to the pilot chamber of the directional control valve for operation thereof. The pilot line includes a flow control valve which allows a free flow of hydraulic fluid from the pilot valve to the directional control valve while limiting a flow of hydraulic fluid from the directional control valve to the pilot valve.

REFERENCES:
patent: 3094042 (1963-06-01), Diener
patent: 3319648 (1967-05-01), Donner
patent: 4194365 (1980-03-01), Stoufflet et al.

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