Fluid control valve

Claim 2

An electromagnetically operated control valve comprising: a housing having a valve port and a magnetically attractable armature therein adjacent to said port, said housing having an inlet and an outlet, but being otherwise sealed; magnetic control means on said housing including a core assembly having a pair of pole pieces, said armature being disposed within the range of magnetic influence of said control means, actuation of said control means shifting said armature in directions toward and away from said valve port to control fluid flow therethrough, means mounting said coil assembly outside of said housing adjacent to a wall thereof; and a pair of pole extensions sealed in said wall in alignment with said pole pieces, said armature being disposed adjacent to said pole extensions.

Claim 3

An electromagnetically operated fluid control valve comprising: a valve housing having an inlet port and an outlet port but otherwise sealed; a flow passage between said ports; a valve port in said passage; closure means for selectively closing said valve port; said closure means including a magnetically attractable armature movable in said housing; and magnetic control means on said housing, said armature being disposed within the range of magnetic influence of said control means, actuation of said control means shifting said armature and said closure means, said armature including a pair of spaced legs thereon; said torsion bar means comprising an elongated bar extending laterally with respect to said armature adjacent to said legs; said bar having enlarged end mounting portions and an enlarged intermediate mounting portion; means fixedly connecting said intermediate mounting portion to said housing; and means fixedly connecting said end mounting portions to said legs.

Claim 4

An electromagnetically operated fluid control valve comprising: a valve housing having an inlet port and an outlet port but otherwise sealed; a flow passage between said ports; a valve port in said passage; closure means for selectively closing said valve port; said closure means including a magnetically attractable armature movable in said housing; and magnetic control means on said housing, said armature being disposed within the range of magnetic influence of said control means, actuation of said control means shifting said armature and said closure means, said armature including a pair of spaced legs thereon; said torsion bar means comprising an elongated bar extending laterally with respect to said armature adjacent to said legs; said bar having enlarged end mounting portions and an enlarged intermediate mounting portion; means fixedly connecting said intermediate mounting portion to said housing; and means fixedly connecting said end mounting portions to said legs.

Claim 5

An electromagnetically operated fluid control valve comprising: a valve housing have an inlet port and an outlet port but otherwise sealed; a flow passage between said ports; a valve port in said passage; closure means for selectively closing said valve port; said closure means including a magnetically attractable armature movable in said housing; and magnetic control means on said housing, said armature being disposed within the range of magnetic influence of said control means, actuation of said control means shifting said armature and said closure means, said magnetic control means including a coil assembly having a pair of pole pieces; means mounting said coil assembly outside of said valve housing remote from the flow of fluid through said flow passage; and a pair of pole extensions separate from said pole pieces sealed in the wall of said valve housing in alignment with said pole pieces, said extensions extending from said pole pieces through said wall to the interior of said housing in close proximity to said armature.

Claim 6

An electromagnetically operated fluid control valve comprising: a valve housing have an inlet port and an outlet port but otherwise sealed; a flow passage between said ports; a valve port in said passage; closure means for selectively closing said valve port; said closure means including a magnetically attractable armature movable in said housing; and magnetic control means on said housing, said armature being disposed within the range of magnetic influence of said control means, actuation of said control means shifting said armature and said closure means, said magnetic control means including a coil assembly having a pair of pole pieces; means mounting said coil assembly outside of said valve housing remote from the flow of fluid through said flow passage; and a pair of pole extensions separate from said pole pieces sealed in the wall of said valve housing in alignment with said pole pieces, said extensions extending from said pole pieces through said wall to the interior of said housing in close proximity to said armature.

Claim 7

A control valve as set forth in claim 3 wherein: said coil assembly comprises a coil surrounding but spaced from a permanent magnet core; and said pole pieces contact the opposite ends of said core.

Claim 8

An electromagnetically operated fluid control valve comprising: a valve housing having an inlet port and an outlet port but otherwise sealed; a flow passage between said ports; a valve port in said passage; closure means for selectively closing said valve port; said closure means including a magnetically attractable armature movable in said housing; and magnetic control means on said housing, said armature being disposed within the range of magnetic influence of said control means, actuation of said control means shifting said armature and said closure means, said magnetic control means comprising first and second magnetic assemblies; said first magnetic assembly comprising a pair of pole pieces, each said pole piece having a first end and a second end, a permanent magnet extending between said first ends of said pole pieces, said second ends of said pole pieces being adjacent to said armature, said first magnetic assembly being devoid of a coil surrounding said magnet; and said second magnetic assembly comprising a second pair of pole pieces, each said pole piece of said second pair having a first end and a second end, a soft iron core extending between said first ends of said pole pieces of said second pair, said second ends of said pole pieces of said second pair being adjacent to said armature, and a coil surrounding said core; said first-mentioned and second pairs of pole pieces being mounted in adjacent parallel relationship.

Claim 9

An electromagnetically operated fluid control valve comprising: a valve housing having an inlet port and an outlet port but otherwise sealed; a flow passage between said ports; a valve port in said passage; closure means for selectively closing said valve port; said closure means including a magnetically attractable armature movable in said housing; and magnetic control means on said housing, said armature being disposed within the range of magnetic influence of said control means, actuation of said control means shifting said armature and said closure means, said magnetic control means comprising first and second magnetic assemblies; said first magnetic assembly comprising a pair of pole pieces, each said pole piece having a first end and a second end, a permanent magnet extending between said first ends of said pole pieces, said second ends of said pole pieces being adjacent to said armature, said first magnetic assembly being devoid of a coil surrounding said magnet; and said second magnetic assembly comprising a second pair of pole pieces, each said pole piece of said second pair having a first end and a second end, a soft iron core extending between said first ends of said pole pieces of said second pair, said second ends of said pole pieces of said second pair being adjacent to said armature, and a coil surrounding said core; said first-mentioned and second pairs of pole pieces being mounted in adjacent parallel relationship.