Remotely controlled relay

Details Remotely controlled relay Remotely controlled relay

1991-05-22

1992-12-15

Donovan, Lincoln

Electricity: magnetically operated switches, magnets, and electr

Electromagnetically actuated switches

Automatic circuit-interrupting devices

335 20, H01H 7500

Patent

active

051720868

ABSTRACT:
A remotely controlled relay having two micro-switches driven to open and close by the plunger of a bistable polar electromagnet device. A current is supplied to the coil of the electromagnet device from an external power source to magnetize the plunger so that the plunger is moved through a stroke between a first position and a second position. When the plunger moves from the first position to the second position, a first micro-switch is closed to energize the coil in a first direction until the plunger passes through the middle of the stroke. When the plunger moves from the second position to the first position, a second micro-switch is closed to energize the coil in a second direction until the plunger passes through the middle of the stroke.

REFERENCES:
patent: Re32882 (1989-03-01), Yokoyama et al.
patent: 4623859 (1986-11-01), Erickson et al.
patent: 4897625 (1990-01-01), Yokoyama et al.
patent: 5053735 (1991-10-01), Ohishi et al.

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