Load responsive fluid control valves

Details Load responsive fluid control valves Load responsive fluid control valves

1976-07-27

1977-11-15

Cohan, Alan

Fluid handling

Systems

Supply and exhaust

91421, 91436, 91446, 137596, F15B 1308

Patent

active

040581390

ABSTRACT:
A load responsive direction and flow control valve for use in fluid power load responsive system. The system is powered by a single fixed or variable displacement pump. The valve maintains a selected constant flow level during control of positive loads and automatically blocks pump flow to the actuator in presence of a negative load, providing the actuator inlet flow requirement from the valve exhaust manifold. The direction and flow control valve is equipped with a load responsive control which during control of positive load maintains a constant low pressure level at the actuator outlet and retains its control characteristics in a system in which multiple positive loads are simultaneously controlled.

REFERENCES:
patent: 3744517 (1973-07-01), Budzich
patent: 3807447 (1974-04-01), Masuda
patent: 3882896 (1975-05-01), Budzich

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