Electricity: magnetically operated switches – magnets – and electr – Electromagnetically actuated switches – Multiple contact type
Patent
1974-11-27
1976-03-02
Harris, G.
Electricity: magnetically operated switches, magnets, and electr
Electromagnetically actuated switches
Multiple contact type
335152, H01H 6714
Patent
active
039421422
ABSTRACT:
An electromagnetic coordinate selection device comprising a plurality of electromagnetically operated cross point switches arranged in a matrix form and a plurality of magnetic cores disposed at points corresponding to said cross point switches for operation thereof, with any desired cross point switch closed only when the first and second coils wound about the magnetic cores are additively excited wherein the magnetic cores are each of the composite type to stabilize the operation of the cross point switches and the cross point switches are collectively sealed in a single container or in groups in a plurality of vessels provided in a number equal to or smaller than the number of the conductors arranged in the direction of the row or column of said matrix.
REFERENCES:
patent: 3417353 (1968-12-01), Vigren et al.
patent: 3487344 (1969-12-01), Takamura et al.
patent: 3523262 (1970-08-01), Bernutz et al.
Ishiguro Ginya
Kato Katsuhiro
Kishimoto Yojiro
Suzuki Hideo
Yano Norio
Harris G.
Nippon Telegraph and Telephone Public Corporation
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