Sub-sea solenoid valves

Details Sub-sea solenoid valves Sub-sea solenoid valves

2007-09-18

2010-10-12

Rivell, John (Department: 3753)

Fluid handling

Systems

Supply and exhaust

C251S129190

Reexamination Certificate

active

07810518

ABSTRACT:
A solenoid-operated valve comprises an inlet valve member which is disposed to close in response to fluid pressure at an inlet port. A venting valve member is disposed relative to the inlet valve member so that closure of either valve member lifts the other. The valve includes at least one coil within which is a tubular assembly that forms a chamber with an operating space for the venting valve member and contains an armature for striking a rear part of the venting valve member when the coil is energised. The chamber includes a flux tube which provides a path for magnetic flux in parallel with the armature, the flux tube terminating before a region where the armature strikes the rear part of the venting valve member. A non-magnetic ring surrounds this region so that the density of the magnetic flux is increased in this region to increase the force with which the armature can strike the rear part of the venting valve member.

REFERENCES:
patent: 4391292 (1983-07-01), Millar
patent: 5104091 (1992-04-01), Rathay et al.
patent: 6213572 (2001-04-01), Linkner et al.
patent: 6577133 (2003-06-01), Barron
patent: 6866063 (2005-03-01), Avila
patent: 7165574 (2007-01-01), Ryuen et al.
patent: 7513272 (2009-04-01), Segi et al.
patent: 2005/0029480 (2005-02-01), Cook
patent: 2165923 (1986-04-01), None
patent: 2186349 (1987-08-01), None
Great Britain Search Report dated May 30, 2007.

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