Polarized magnet system

Details Polarized magnet system Polarized magnet system

Filed on

1981-01-23

Date issued

1982-04-13

Examiner

Harris, George

Patent Class

Electricity: magnetically operated switches, magnets, and electr

SubClass

Magnets and electromagnets

SubSubClass

With magneto-mechanical motive device

Other Related Categories

335 80, 335234, H01F 708

Type

Patent

Status

active

Patent number

043250432

Description

ABSTRACT:
A polarized magnet system for a relay has a rotary armature having a pair of opposed parallel pole-piece plates which enclose permanent magnets and which terminate in spaced pole-plate piece ends which surround the pole-pieces of a coil core in clamp-like fashion and form working air gaps with the core. The ends of the ferromagnetic pole-piece plates are angled to form a tab in the direction of the coil core so that the working air gaps are shifted in the direction of the coil permitting the permanent magnets to occupy the entire distance between the pole pieces commensurate with the overall armature length.

REFERENCES:
patent: 2866927 (1958-12-01), Berg et al.
patent: 3017474 (1962-01-01), Huetten
patent: 3993971 (1976-11-01), Ono et al.
patent: 4191937 (1980-03-01), Koehler et al.
patent: 4237439 (1980-12-01), Nemoto

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