Polarized relay

Details Polarized relay Polarized relay

1986-01-29

1987-06-16

Harris, George

Electricity: magnetically operated switches, magnets, and electr

Electromagnetically actuated switches

Polarity-responsive

335234, H01H 5122

Patent

active

046739084

ABSTRACT:
A polarized relay comprises a bar-like core having coil, and a yoke connected to the core and extending in parallel therewith. An armature including a permanent magnet is laterally movably disposed between a pair of upstanding legs formed at a free end of the yoke. Movable contacts are operationally coupled to the armature. The upstanding legs of the yoke have effective areas of magnetic pole. Upon energization of the coil, the armature is moved toward the upstanding leg to close one of the stationary contacts by overcoming the resilient resistance of the movable contact arm. Upon deenergization, the movable contact is held being contact with stationary contact under the magnetic force between the armature and upstanding leg so as to perform a bistable operation.

REFERENCES:
patent: 2881365 (1959-04-01), Bernstein
patent: 4064471 (1977-12-01), Schuessler et al.
patent: 4142166 (1979-02-01), Arnoux
patent: 4191937 (1980-03-01), Koehler et al.
patent: 4451808 (1984-05-01), Koehler
patent: 4563663 (1986-01-01), Niekawa et al.

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