Electronmagnetic device

Details Electronmagnetic device Electronmagnetic device

1995-03-06

1997-03-04

Donovan, Lincoln

Electricity: magnetically operated switches, magnets, and electr

Electromagnetically actuated switches

Polarity-responsive

335 80, 335128, H01H 5122

Patent

active

056083661

ABSTRACT:
A coil of an electromagnetic device is wound around a C-shaped or U-shaped section iron core. A supplementary member support a permanent magnet roughly on its center and defines an air gap between both ends of the member and both ends of the iron core. An armature is pivotally supported on the permanent magnet and has both ends adapted to alternately make and break contact with end walls of the iron core. The armature further includes magnetic circuit switching members near both of its ends, which cross the magnetic flux passing through the air gap, so that the magnetic circuit switching members are alternately brought into the air gap by pivoting the armature according to excitation and deexcitation by the coil.

REFERENCES:
patent: 5117209 (1992-05-01), Sato
patent: 5270674 (1993-12-01), Nakanishi et al.
Patent Abstracts of Japan, vol. 014, No. 229 (E-0928), 15 May 1990 & JP-A-02 (Omron Tateisi Electron Co.) 28 Feb. 1990.
Patent Abstracts of Japan, vol. 017, No. 050 (E-1314), 29 Jan. 1993 & JP-A-04 264321 (Fujitsu Ltd.) 21 Sep. 1992.
Patent Abstracts of Japan, vol. 017, No. 578 (E-1450), 20 Oct. 1993 & JP-A-05 174689 (Matsushita Electric Works Ltd.) 13 Jul. 1993.
Patent Abstracts of Japan, vol. 018, No. 091 (E-1508), 15 Feb. 1994 & JP-A-05 298996 (Matsushita Electric Works Ltd.) 12 Nov. 1993.

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