Electromagnetically operable switch

Details Electromagnetically operable switch Electromagnetically operable switch

1977-09-21

1979-05-22

Harris, George

Electricity: magnetically operated switches, magnets, and electr

Electromagnetically actuated switches

Multiple contact type

335122, 335190, H01H 6702

Patent

active

041562178

ABSTRACT:
An electrical switch having first and second sets of contacts and an operating member which is associated with both sets of contacts such that both sets of contacts can be moved from one of their operative states to the other operative state by a single movement of the operating member. A first electromagnetic arrangement is provided whereby the first set of contacts can be returned from the closed state to the open state by the application to the first electromagnetic arrangement of an electrical signal, and there is a second electromagnetic arrangement whereby the second set of contacts can be returned from the closed state to the open state by the application to the second electromagnetic arrangement of the electrical signal. The switch is so arranged that the first set of electrical contacts is returned by the electrical signal to its open state in advance of the return of the second set of electrical contacts to its open state.

REFERENCES:
patent: 3036174 (1962-05-01), Ardia et al.
patent: 3808387 (1974-04-01), Harris

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