Electricity: magnetically operated switches – magnets – and electr – Electromagnetically actuated switches – Multiple contact type
Patent
1975-11-24
1976-12-14
Broome, Harold
Electricity: magnetically operated switches, magnets, and electr
Electromagnetically actuated switches
Multiple contact type
335196, H01H 6726
Patent
active
039978583
ABSTRACT:
A coordinate electrical switch construction comprising a pair of flexible insulating sheets each havng pierced therethrough a coordinate array of "U" shaped magnetic contact elements arranged to have corresponding legs in opposing, spaced-apart registration. Winding means coupled to the contact elements in each set of coordinates on each sheet are coincidently energisable to selectively magnetize a pair of elements at a crosspoint to bring opposing legs into electrical contact against the flexion of the sheets. The contact elements are multiplied together in one and the other sets of coordinates on respective sheets to provide signal path halves which are completed upon contact leg closure at a crosspoint. The contact elements are of a remanent magnetic material so that closure is maintained after termination of the energizing step. Release of selected crosspoint elements is achieved by reverse energization of the defining winding means.
REFERENCES:
patent: 3025502 (1962-03-01), Gellert
patent: 3027548 (1962-03-01), Vaughan
patent: 3268840 (1966-08-01), Hjertstrand
patent: 3753176 (1973-08-01), Regnier et al.
Bell Telephone Laboratories Incorporated
Broome Harold
Kamstra William H.
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