Fluid handling – Systems – Multi-way valve unit
Patent
1985-10-03
1987-01-13
Michalsky, Gerald A.
Fluid handling
Systems
Multi-way valve unit
25112908, 25112915, 25112918, 335274, F16K 3102, F15B 13044
Patent
active
046356835
ABSTRACT:
A variable force solenoid for operating a hydraulic pressure regulating valve which includes an actuator shaft aligned with the central axis of the valve and solenoid, a coil of electrical conducting wire, a cylindrical core on which the wire is wound and through which the induced magnetic flux flows, an actuator actuates shaft spaced by a non-working air gap from the casing and moveable axially toward and away from the edge of the core, flexible bearings at opposite axial ends of the actuator shaft and a compression spring. A force is applied to the actuator shaft by a unique double spring combination. The flexible bearings restrict lateral displacement of the actuator and permit frictionless axial displacement of the actuator. The hydraulic valve has a valve spool that moves due, to the position of the actuator, from a position that produces maximum pressure when the coil is de-energized to a position that produces zero pressure when the coil is energized. A zero pressure adjustment and maximum pressure adjustment establish the correct position of the valve spool within the valve body.
REFERENCES:
patent: 3521854 (1970-07-01), Leiber et al.
patent: 3805203 (1974-04-01), Deckard
patent: 3880476 (1975-04-01), Belart et al.
patent: 4299252 (1981-11-01), Reinicke
patent: 4463332 (1984-07-01), Everett
patent: 4525695 (1985-06-01), Sheng et al.
patent: 4535816 (1985-08-01), Feder et al.
Ford Motor Company
Harrington Donald J.
McKenzie Frank G.
Michalsky Gerald A.
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