Load responsive fluid control valves

Details Load responsive fluid control valves Load responsive fluid control valves

1976-08-25

1978-05-16

Schwadron, Martin P.

Power plants

Pressure fluid source and motor

Having condition responsive control in a system of distinct...

91414, 91446, 91451, 13759612, F16D 3102

Patent

active

040891682

ABSTRACT:
A load responsive direction and flow control valve for use in fluid power load responsive system. The valve maintains a selected constant flow level for control of both positive and negative loads, irrespective of the change in the load magnitude or change in the fluid pressure, supplied to the valve. When controlling positive or negative loads the valve maintains a constant pressure differential across a flow control metering orifice utilizing a single control slide member, first by throttling fluid entering the inlet chamber and then by throttling the fluid leaving the outlet chamber. The valve may be used with fixed displacement pumps, fixed displacement pumps equipped with differential pressure relief valves, with variable pumps equipped with pressure compensators and variable pumps equipped with differential pressure compensators.

REFERENCES:
patent: 3285282 (1966-11-01), Martin
patent: 3730219 (1973-05-01), Tennis
patent: 3807443 (1974-04-01), Jacobs
patent: 3807447 (1974-04-01), Masuda

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