INDEPENDENT METERING VALVE WITH FLOW LIMITER

WIPO Patent Application WO/2012/082354

A3

An independent metering valve (24) (IMV) assembly is disclosed that includes a metering stem (21) including an inlet (29). The IMV assembly also includes a hydro-mechanical control valve (37) in communication with a fluid source and the inlet (29). The control valve (37) also including a spool (43) with a closed end (46) and an open end (42). The control valve (37) includes a biasing member (48) that biases the control valve (37) or spool (43) towards an open position thereby establishing communication between the fluid source and the inlet (29). The control valve (37) also including a load signal line (45) providing communication between an outlet (18) of the control valve (37) upstream of the inlet (29) and the closed end (46) of the spool (43). Wherein high pressure in the load signal line (45) allowing the control valve (37) to move towards a closed position thereby overcoming bias of the biasing member (48) and reducing flow to the inlet (29) during a high pressure condition.

WO/1990/006463	ABNORMAL PRESSURE PREVENTION-VACUUM PREVENTION VALVE
WO/2012/102986	MANIFOLD JOINT SEAL
WO/2006/105765	DIRECTIONAL CONTROL VALVE AND CONTROL SYSTEM PROVIDED THEREWITH

FERRAZ JOHN (US)
EGELJA ALEKSANDAR (US)
MA PENGFEI (US)
BESCHORNER MATTHEW (US)

PCT/US2011/062357

September 13, 2012

November 29, 2011

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CATERPILLAR INC (US)
FERRAZ JOHN (US)
EGELJA ALEKSANDAR (US)
MA PENGFEI (US)
BESCHORNER MATTHEW (US)

F15B13/02; E02F9/22; F16K31/12

US7204084B2	2007-04-17
US6662705B2	2003-12-16
US5150574A	1992-09-29
US4364304A	1982-12-21

SPILLMAN, M., Daniel et al. (Peoria, IL, US)

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