Fluid handling – Systems – Multi-way valve unit
Patent
1992-09-14
1994-04-05
Michalsky, Gerald A.
Fluid handling
Systems
Multi-way valve unit
25112908, 25112915, 335261, F15B 13044
Patent
active
052996000
ABSTRACT:
An analog proportional pressure control 3-way valve includes an elongate cylindrical valve housing having an axial through bore defining an interior chamber, one end of the housing comprising an end port opening, a plurality of axially spaced side port openings defining an inlet and an outlet, and an axial opposite end comprising a sleeve end receivable in a solenoid, in use. A valve member is movable in the chamber at the port end for selectively controlling fluid pressure through the chamber between the end port opening and the outlet in the neutral position or between the inlet and the outlet in a regulated position. A solenoid plunger is movable in the chamber at the sleeve end and is operatively associated with the valve member for positioning the valve member. A stop is mounted to the housing at the sleeve end for retaining the plunger in the chamber. A pressure dividing circuit divides regulated pressure between the outlet and the end port opening in the regulated position of the valve member to create an intermediate pressure to balance force from the solenoid.
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Internation Publication No. WO91/05195, published 18 Apr. 1991.
Michalsky Gerald A.
Sterling Hydraulics, Inc.
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