Proportional solenoid-controlled fluid valve assembly

Details Proportional solenoid-controlled fluid valve assembly Proportional solenoid-controlled fluid valve assembly

1997-12-10

2000-04-11

Rivell, John

Valves and valve actuation

Electrically actuated valve

Including solenoid

25112918, 335279, F16K 3102

Patent

active

060479477

ABSTRACT:
A proportional solenoid-driven valve control assembly contains a moveable, magnetic armature positioned adjacent to one end of a fixed pole piece that protrudes from a solenoid bore and is supported by means of a pair of flat suspension springs adjacent to the one end of the bore. The movable armature is configured to provide two generally cylindrical radial magnetic flux paths. One flux path traverses a radial gap at one end of fixed magnetic pole piece that protrudes from the one end of the solenoid bore. The other flux path traverses a generally cylindrical gap between a rim portion of the armature and an inwardly projecting magnetic element of the solenoid housing. The two radially separate cylindrical gaps function as coaxial guide air-bushings for the moveable magnetic armature that prevent off-axis play between the moveable armature and the pole piece and the inwardly projecting magnetic element.

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patent: 5516076 (1996-05-01), Stobbs et al.
patent: 5547165 (1996-08-01), Brehm et al.

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