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US 4,655,249 AGranted
Electromagnetic valve
AssigneeHoneywell Lucifer S.A.
InventorJean Livet
Life of this patent
Estimating the term…
Abstract
An electromagnetic valve uses a solenoid coil to produce a magnetic attraction of a cylindrical shell core against the action of a spring. A valve seat is constituted by a plate of a hard material arranged to cooperate with a circular ridge on an end of the core to obtain an hermetic seal therebetween. The plate is maintained against a bearing surface within a valve housing by a telescoping element located within the shell core and providing a sliding support surface for the shell core.
Claims6
A solenoid valve comprising
- a body delimiting a chamber,
- an orifice in said body,
- a movable magnetic core forming a valve plug that can be displaced under the action of a magnetic field produced by an electrical coil,
- an electrical coil,
- at least one valve seat cooperating with said core to control the passage of a fluid between the said chamber and said orifice, said seat being constituted by a non-magnetic washer with a hardness at least equal to that of its support,
- a support for said washer, and
- spring means for axially urging said washer against said support, said spring means including a spring and a flanged element subject to said spring, and having a tubular end which is engaged in said body.
4 more elements
Dependencies are inferred from the claim text.