Electromagnetic actuator armature having eddy current-reducing m

Details Electromagnetic actuator armature having eddy current-reducing m Electromagnetic actuator armature having eddy current-reducing m

1998-04-13

1999-05-11

Donovan, Lincoln

Electricity: magnetically operated switches, magnets, and electr

Magnets and electromagnets

With magneto-mechanical motive device

2511291, H01F7/08

Patent

active

059032049

ABSTRACT:
An electromagnetic actuator for operating a setting member includes an electromagnet composed of a yoke body and a magnet coil held by the yoke body; an armature adapted to be coupled to the setting member; and a resetting spring for exerting a spring force to the armature. The spring force opposes the magnetic force generated by the electromagnet when energized. The armature is guided in a reciprocating motion which it executes in a direction of armature displacement in response to the magnetic and spring forces. The armature is provided with a plurality of throughgoing, slot-shaped apertures.

REFERENCES:
patent: 4527139 (1985-07-01), Bohg et al.
patent: 4673163 (1987-06-01), Kushida et al.
patent: 5207410 (1993-05-01), Wakeman
patent: 5690064 (1997-11-01), Izuo

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