Electrohydraulic valve having an armature with a rolling...

Details Electrohydraulic valve having an armature with a rolling... Electrohydraulic valve having an armature with a rolling...

2006-03-07

2006-03-07

Jacyna, J. Casimer (Department: 3751)

Valves and valve actuation

Electrically actuated valve

Including solenoid

C123S090110, C137S625650

Reexamination Certificate

active

07007925

ABSTRACT:
A solenoid operated valve has a valve body with a plurality of ports and a spool slidable within the valve body to interconnect the ports in different combinations. An actuator drives the spool into several operating positions. The actuator has a solenoid assembly with an aperture within which first and second tubular pole pieces are received. An armature is able to slide within the two pole pieces and a push member projects from the armature abutting the spool. The push member is secured to a rolling bearing which has a plurality of rolling elements that roll against the pole pieces to reduce resistance to movement of the armature.

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