Switching device

Details Switching device Switching device

2007-01-02

2007-01-02

Enad, Elvin (Department: 2832)

Electricity: magnetically operated switches, magnets, and electr

Electromagnetically actuated switches

Multiple contact type

C335S078000, C335S128000

Reexamination Certificate

active

11014638

ABSTRACT:
An electromagnetic relay has an iron core having a protruding shaft and a magnetic pole portion. The protruding shaft is penetrated through a through hole provided on a metal case, and coil is wound around the protruding shaft. A voltage is applied to the coil for magnetization and stopped for demagnetization, hence to drive a contact mechanism with a movable iron piece that is attracted by and separated from the magnetic pole portion, thereby causing a reciprocating motion of the movable iron piece. The relay can prevent generation of eddy current.

REFERENCES:
patent: 4616114 (1986-10-01), Strasser
patent: 5519370 (1996-05-01), Perreira et al.
patent: 5525948 (1996-06-01), Poulsen
patent: 2004/0066261 (2004-04-01), Nishida et al.
patent: 05133705 (1991-10-01), None
patent: 510040 (1997-10-01), None
patent: WO 95/24051 (1995-09-01), None
Patent Abstracts of Japan; Publication No. 2002-233201 dated Aug. 20, 2002 (1 page) (corresponds to AB above—U.S. Pub. No. US2004/0066261A1).

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