Priority hydraulic control valve

Details Priority hydraulic control valve Priority hydraulic control valve

1973-10-23

1976-07-20

Schwadron, Martin P.

Fluid handling

Systems

Supply and exhaust

91446, 137596, F17D 300

Patent

active

039701085

ABSTRACT:
A valve section which establishes priority flow in a valve assembly having a plurality of directional control open-center valves each for controlling flow between an associated hydraulic motor and a common power passage from a single source of motive fluid, wherein flow to one of the motors is afforded priority during simultaneous operation of it and another motor. The associated valve section of the priority motor having a conventional load check valve opened by pressure in the common power passage while the load check of the non-priority valve section is opened by pilot pressure in its open-center passage.

REFERENCES:
patent: 2745433 (1956-05-01), Schneider et al.
patent: 2873762 (1959-02-01), Tennis
patent: 3216446 (1965-11-01), Schmiel
patent: 3229717 (1966-01-01), Rice
patent: 3283773 (1966-11-01), Lowman
patent: 3415265 (1968-12-01), Cleminshaw et al.
patent: 3534774 (1970-10-01), Tennis
patent: 3815477 (1974-06-01), Ailshie et al.

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