Fluid handling – Systems – Multi-way valve unit
Patent
1990-03-30
1992-06-02
Michalsky, Gerald A.
Fluid handling
Systems
Multi-way valve unit
2511291, 335256, F15B 13044, F16K 3106
Patent
active
051178699
ABSTRACT:
A three position solenoid operated spool type cartridge valve includes a pair of solenoids acting on a valve assembly. The valve assembly comprises a valve sleeve having a valve chamber with a plurality of ports and an outlet. A valve spool is slidably mounted in the valve chamber for controlling flow between the ports. The two solenoid coils are removably mounted in concentrically surrounding relationship to a tube assembly. The tube assembly includes a tube end portion with a convave outer end bore. A sleeve is welded to the tube end portion at the outer end. A plunger armature is slidably received in the sleeve between the tube end portion and a tube stop adapter having a concave inner end. The tube stop adapter includes a central axial bore connected to the concave inner end with the bore being enlarged at an outer end. A rod extends through the tube stop adapter bore and includes one end secured to the armature and the other end being secured to the valve spool. A coil spring is contained within the enlarged bore between a shoulder therein and the valve sleeve. The axial distance between the armature and the outer end of the rod is selected so that when the valve is assembled the armature is centrally located relative to the tube end concave end bore and the tube stop adapter concave inner end bore.
REFERENCES:
patent: 4201116 (1980-05-01), Martin
patent: 4682135 (1987-07-01), Yamakawa
patent: 4790345 (1988-12-01), Kolchinsky
Michalsky Gerald A.
Sterling Hydraulics, Inc.
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