Flow control valve

Details Flow control valve Flow control valve

1979-10-24

1981-03-10

Schwadron, Martin P.

Motors: expansible chamber type

Fluid supply through diverse paths to single expansible chamber

Second path activated in response to pressure or flow in...

137110, 91468, G05D 1113

Patent

active

042546877

ABSTRACT:
A solenoid powered flow control valve in which the valve spool has split the pump flow across a primary metering orifice and a pilot metering orifice which regardless of spool position maintains a substantially constant flow ratio between the main and pilot flow. The valve spool is controlled by opposing servo chambers which sense the pressure drop in the pilot flow path across a solenoid powered variable orifice.

REFERENCES:
patent: 2391930 (1946-01-01), Stone
patent: 2707021 (1955-04-01), Harris
patent: 2891517 (1959-06-01), Towler et al.
patent: 3424057 (1969-01-01), Schweizer
patent: 3625007 (1971-12-01), Herndon, Jr.
patent: 3693506 (1972-09-01), McMillen et al.
patent: 3744517 (1973-07-01), Budzich
patent: 3771558 (1973-11-01), Ailshie
patent: 3815477 (1974-06-01), Ailshie et al.
patent: 3905383 (1975-09-01), Schwerin
patent: 3979908 (1976-09-01), Alderson

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