Control valve

Details Control valve Control valve

1975-10-07

1976-11-09

Cohan, Alan

Motors: expansible chamber type

With motive fluid valve

Both inlet and exhaust controlled by motive fluid pressure...

137102, 13762569, F15B 1314

Patent

active

039903524

ABSTRACT:
A control valve is provided which is designed to be set in place on a hydraulic circuit of a two-drum type hydraulic-actuated winch for controlling the actuation of the hook and the boom of a crane, and to be employed for actuating a hoisting-up clutch, a hoisting-down clutch, and a brake.
A control valve is designed with a spool and a sliding lever arranged in place in the main body of the valve in such a manner as to be free to slide therein, with the said sliding lever connected with a control lever for the hook and the boom, wherein the operating capability of the said control lever is so set in place as to be on a higher level than the hydraulic operating capability to be fed to hydraulic equipment.

REFERENCES:
patent: 3106135 (1963-10-01), McAfee
patent: 3473566 (1969-10-01), Peppel
patent: 3698415 (1972-10-01), Forster et al.
patent: 3895703 (1975-07-01), Schmitt et al.

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