Polarity reversing electrical switch

Details Polarity reversing electrical switch Polarity reversing electrical switch

1977-02-28

1978-10-17

McCarthy, Edward J.

Electricity: circuit makers and breakers

Special application

Liquid or moisture responsive

200339, H01H 1328

Patent

active

041210689

ABSTRACT:
A four terminal polarity reversing electrical switch. Two of the terminals each have a pair of contact surfaces so located as to form opposed pairs of contacts, each pair including one contact from each terminal, when the terminals are positioned symmetrically with respect to each other. The other two terminals provide bearing surfaces supporting rotatable arms which extend intermediate corresponding contact surface pairs and which contact one of the other surfaces of the pairs when the arms are rotated to opposed positions.

REFERENCES:
patent: 3225153 (1965-12-01), Carling
patent: 3225156 (1965-12-01), Salrbacker
patent: 3403236 (1968-09-01), Zoludow
patent: 3974347 (1976-08-01), Lockard
patent: 4022999 (1977-05-01), Brown

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