Electromagnetic valve operator

Details Electromagnetic valve operator Electromagnetic valve operator

1989-12-15

1991-04-30

Michalsky, Gerald A.

Fluid handling

Destructible or deformable element controlled

Destructible element

222 5, 251 65, 251 68, 25112916, 335234, 335238, F16K 3108, H01F 708

Patent

active

050109111

ABSTRACT:
A bi-stable electromagnet operator having an armature plate which is held in a first position by a permanent magnet and in a second position by a spring. An electromagnet is provided to enable the armature plate to move from the first position to the second position. The magnet has high coercivity and therefore the permanent magnet and core of the electromagnet can be in close magnetic contact both when the armature is in the first position and in the second position. The high coercivity of the permanent magnet provides for sufficient flux flow to maintain magnetization when the armature plate is in the second position away from the permanent magnet. Typically, the permanent magnet comprises neodymium.

REFERENCES:
patent: 4072918 (1978-02-01), Read, Jr.
patent: 4083187 (1978-04-01), Magashima
patent: 4253493 (1981-03-01), English
patent: 4496395 (1985-01-01), Croat
patent: 4683452 (1987-07-01), Henley
Magnequench, General Motors, 1987 (brochure).
Kogyosha Catalog Excerpts, 1983 or 1984.
Drawing No. X-32054, "Cocking Mechanism Assembly", The Ansul Company, Marinette, Wis. 54143, Jan. 17, 1977.

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