Patent ID: 8376314
Filing Date: 2013-02-19
Classification: F16K,H01F,Y10T

Abstract:
1. A controllable solenoid valve, comprising: a valve housing; a slide which is displaceable in the valve housing in an axial direction of the housing between first and second final positions; a seal about said slide which defines a chamber; said chamber filled with a dielectric fluid which engages and surrounds said slide; said chamber is in fluid communication with a reservoir through a port wherein said chamber is positively pressured and maintained substantially at ambient pressure independent of the function fluid pressure; a spring acting upon the slide counter to the magnetic force to maintain the slide in one of the final positions when an electromagnet is not sufficiently energized to drive the slide with force sufficient to completely overcome force of the spring; and a solenoid comprising the electromagnet, the solenoid being operatively connected to the slide so that sufficient electrical energization of the solenoid to produce a magnetic force sufficient to completely overcome force of the spring displaces the slide from one of the final positions to the other of the final positions to permit flow of function fluid and a vent check integral to said housing and operably engaged to said flow to selectively exhaust function fluid.