Electromagnetic switch

Details Electromagnetic switch Electromagnetic switch

1999-05-25

2000-10-10

Gellner, Michael L.

Electricity: magnetically operated switches, magnets, and electr

Magnets and electromagnets

With magneto-mechanical motive device

335255, 335261, H01F 300, H01F 708

Patent

active

061305952

ABSTRACT:
An electromagnetic switch has a solenoid coil, a sleeve and a movable core which slides in the sleeve. A metal thin film is formed on an outer peripheral surface of the movable core by electroplating. The metal thin film is harder than the inner surface of the sleeve, and has high melting point and high smoothness. Accordingly, adhesive wear between the sleeve and the movable core is reduced, and sliding durability under high temperature is improved.

REFERENCES:
patent: 3699486 (1972-10-01), De Lucia
patent: 3740171 (1973-06-01), Farkos
patent: 5174336 (1992-12-01), Casey et al.
CRC Handbookof tables for Applied Engineering Science, p. 617, 1970.

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