Polarized electromagnetic relay

Details Polarized electromagnetic relay Polarized electromagnetic relay

1985-07-18

1986-09-30

Harris, George

Electricity: magnetically operated switches, magnets, and electr

Electromagnetically actuated switches

Polarity-responsive

335 80, 335279, H01F 708

Patent

active

046149279

ABSTRACT:
A polarized electromagnetic relay has a movable block which includes two U-shaped magnetic plates, each of which has first and second ends. The plates are fixed on individually associated and opposite poles of a permanent magnet to oppose each other. A core has one end placed between the two magnetic plates. A yoke is magnetically connected to the core, the yoke having a fork on one end thereof. The fork is placed outside each of the two magnetic plates. A spool with a coil mounted thereon has a center hole through which the core is inserted. The movable block is supported in a manner which enables it to move in a direction which is parallel to the magnetic axis of the permanent magnet.

REFERENCES:
patent: 4538126 (1985-08-01), Bando
patent: 4560966 (1985-12-01), Nagamoto et al.
patent: 4563663 (1986-01-01), Niekawa et al.
Design of a Relay with a Movable Permanent Magnetic, by Ozawa et al., 32nd National Relay Conference, Apr. 17-18, 1984, pp. 4-1 to 4-9.

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