Fluid handling – Systems – Multi-way valve unit
Patent
1986-10-14
1988-05-17
Michalsky, Gerald A.
Fluid handling
Systems
Multi-way valve unit
25112915, F15B 13044
Patent
active
047443898
ABSTRACT:
A hydraulic pressure controller including a valve body having a longitudinal bore and defining an inlet port for connection to a hydraulic pump, an outlet port for connection to a hydraulically operated device, a discharge port for connection to a hydraulic fluid reservoir and a cylindrical end portion surrounding a portion of the longitudinal bore, with the ports opening transversely into the longitudinal bore. Also included is a valve spindle axially movable in the longitudinal bore between positions that provide flow passages between the inlet, outlet and discharge ports; an electromagnet having a solenoid winding, a fixed magnetic core, and a cylindrical plunger movable within the winding and axially aligned and engageable end-to-end with the valve spindle; and a cylindrical guide tube having an open ended length portion fitted over the cylindrical end portion and another length portion slidably fitted over the plunger.
REFERENCES:
patent: 4074700 (1978-02-01), Engle
patent: 4250922 (1981-02-01), Will et al.
patent: 4535816 (1985-08-01), Feder et al.
patent: 4579145 (1986-04-01), Leiber et al.
patent: 4635683 (1987-01-01), Nielsen
patent: 4655254 (1987-04-01), Hafner et al.
Diesel Kiki Co. Ltd.
Jarcho Harold G.
Michalsky Gerald A.
Toupal John E.
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