초록 ▼

A solenoid operated hydraulic control valve which has a specially ported spool valve to statically balance spool force in the opened and closed positions, and a specially designed solenoid operator which includes very small ratios of gaps to cross-sectional areas for the working and non-working gaps

A solenoid operated hydraulic control valve which has a specially ported spool valve to statically balance spool force in the opened and closed positions, and a specially designed solenoid operator which includes very small ratios of gaps to cross-sectional areas for the working and non-working gaps between the armature and stator.

대표청구항 ▼

A solenoid operated actuator comprising: a generally disc-shaped armature having freedom of motion along a central axis of said armature; a stator having a central stator pole piece having a central hole passing therethrough that is substantially axially aligned with said central axis and a stator b

A solenoid operated actuator comprising: a generally disc-shaped armature having freedom of motion along a central axis of said armature; a stator having a central stator pole piece having a central hole passing therethrough that is substantially axially aligned with said central axis and a stator body having an open end surrounding said armature to provide a circumferential nonworking gap between said stator and the outer circumferential surface of said armature having a constant interstitial surface area and gap separation throughout the travel of said armature along said armature axis; a solenoid coil wound around said central stator pole piece; and a plunger attached to said armature and passing through said central hole of said central pole piece for maintaining axial alignment between said stator and said armature and transmitting the movement of said armature within said stator body through said central pole piece and out of said stator.