Electrical switch having arc-protected contacts

Details Electrical switch having arc-protected contacts Electrical switch having arc-protected contacts

1985-10-03

1986-10-07

Scott, J. R.

Electricity: circuit makers and breakers

Multiple circuit control

Multiple switch

200 16D, 200144R, 200159A, 200238, H01H 930, H01H 1350, H01H 1502

Patent

active

046161120

ABSTRACT:
An electrical switch comprises a dielectric base member having parallel stationary contact assemblies provided with aligned contact segments, each of the contact segments including an exposed contact section and a dielectric section. A spring-biased movable contact assembly is disposed between the stationary contact assemblies and includes cantilevered arcuate contact sections springably engaging respective aligned contact segments. The exposed contact sections have parallel projections and the dielectric sections have a projection along which the arcuate contact sections move, one of the parallel projections being longer so that, when the arcuate contact sections move from the contact sections onto the dielectric sections or vice versa, the arcuate contact sections engage the longer projection last or first so that an electric arc, if it occurs, will occur therebetween rather than between the short projections and the arcuate contact sections.

REFERENCES:
patent: 3293399 (1966-12-01), Heinrich
patent: 3378654 (1968-04-01), Hoy et al.
patent: 3818169 (1974-06-01), Kobernus
patent: 4161637 (1979-07-01), Priesemuth
patent: 4168405 (1979-09-01), Raab et al.
patent: 4225758 (1980-09-01), Kondo et al.
patent: 4371759 (1983-02-01), Clark, Jr.
patent: 4497983 (1985-02-01), Galloway et al.

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