Electromagnetically operated control valve

Details Electromagnetically operated control valve Electromagnetically operated control valve

1979-05-24

1981-02-17

Michalsky, Gerald A.

Fluid handling

Systems

Multi-way valve unit

251129, F15B 13044

Patent

active

042509220

ABSTRACT:
The electromagnetically operated sliding spool control valve particularly for use in connection with an automatic transmission system of a motor vehicle, comprises an armature of the electromagnet which is supported at one end of a plunger the other end of which is formed into a sliding spool. The spool is guided in a valve sleeve integrally connected to a fixed core of the electromagnetic coil. A return spring is arranged around a plunger portion between the core and the armature. The valve sleeve is seated in a central boring of a valve channel plate provided with a plurality of annular grooves communicating via transverse borings with the central passage of the sleeve. The sleeve opens into a pressure space which communicates via a flow return channel with a port for the main pressure so that the main pressure acts against the free end of the spool.

REFERENCES:
patent: 3016920 (1962-01-01), Thomsen et al.
patent: 3791408 (1974-02-01), Saitou et al.
patent: 3880476 (1975-04-01), Belart et al.

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