Electromagnetic switch matrix device

Details Electromagnetic switch matrix device Electromagnetic switch matrix device

1977-06-10

1979-01-16

Broome, Harold

Electricity: magnetically operated switches, magnets, and electr

Electromagnetically actuated switches

Multiple contact type

335152, H01H 6730

Patent

active

041351363

ABSTRACT:
An improvement in an electromagnetic switch matrix permits the simultaneous closing of a plurality of cross-points either in the same row or in the same column without causing the erroneous operation of nonselected cross-points. The switch matrix is of the divisionally excited type having a magnetic shunt plate with sealed switches disposed in through apertures therein at cross-point locations. First, second, third and fourth windings are wound around the sealed switches so as to generate control magnetic fields for controlling the operations of the respective sealed switches. An asymmetrical magnetization is given to the sealed switches with respect to the top and bottom planes so that there is a difference in the magnetization of the sealed switches on either side of the shunt plate when driven by the windings.

REFERENCES:
patent: 3953813 (1976-04-01), Yano et al.
patent: 3982216 (1976-09-01), Mitsuhashi et al.
patent: 4075433 (1978-02-01), Mitsuhashi et al.

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