Slide control valve

Details Slide control valve Slide control valve

1985-02-22

1986-06-24

Michalsky, Gerald A.

Fluid handling

Systems

Multi-way valve unit

1375961, 13762569, 251900, F15B 1304

Patent

active

045962740

ABSTRACT:
A hydraulic control valve whose spool slides within a stator in which gaskets are provided to insure the watertightness of the sliding motion. Due to the placement of various bores, the ports may be crossed by the gaskets without damage because the gaskets are either under balanced pressure upon crossing the ports, or under the prevailing pressure of the port which is being crossed. A watertight hydraulic slide control valve having a stator with distribution ports is positioned along the wall of a longitudinal bore. A grooved slide spool having a plurality of gaskets is positioned to slide inside the bore of the stator. When any one of the plurality of gaskets crosses a distribution port during a switching operation, the pressure acting on the gasket within the bore is less than or equal to the pressure applied to the gasket from the distribution port when the gasket passes across the distribution port.

REFERENCES:
patent: 2979080 (1961-04-01), Hewitt
patent: 3107694 (1963-10-01), Hastings et al.

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