Control circuit of actuator

Details Control circuit of actuator Control circuit of actuator

1974-07-23

1976-12-14

Croyle, Carlton R.

Motors: expansible chamber type

With motive fluid valve

Relatively movable inlet and exhaust valves for single...

91461, 13759615, F04B 2100

Patent

active

039968405

ABSTRACT:
A control circuit for an actuator having an operation valve for selectively distributing hydraulic oil from a pump to plural actuators which has a plurality of conduits, a plurality of pilot-operated valves for controlling the flow direction of oil to the actuator side or the tank side, and a pilot spool valve, whereby the operating force of the operation valve can be greatly reduced in simple operation.

REFERENCES:
patent: 1114431 (1914-10-01), Bopp
patent: 1267281 (1918-05-01), Schneider
patent: 3080887 (1963-03-01), Brandenberg
patent: 3103230 (1963-09-01), Kutsche
patent: 3104861 (1963-09-01), Heyer et al.
patent: 3423935 (1969-01-01), Budzich
patent: 3433131 (1969-03-01), Soyland et al.
patent: 3517681 (1970-06-01), Davison
patent: 3608435 (1971-09-01), Conabee et al.
patent: 3677287 (1972-07-01), Morris
patent: 3678959 (1972-07-01), Liposky
patent: 3693506 (1972-09-01), McMillen et al.

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