Electrically insulating plastic element for an electrical switch

Details Electrically insulating plastic element for an electrical switch Electrically insulating plastic element for an electrical switch

1980-11-03

1983-11-29

Macon, Robert S.

Electricity: circuit makers and breakers

Liquid contact

Time delay

200144C, 200147R, 200149A, H01H 3359

Patent

active

044182562

ABSTRACT:
A plastic mass of a blast nozzle contains a filler which is at least partially composed of powder of one or more metals. The proportion of metal powder amounts to at most 30 percent by weight, preferably 5 to 15 percent by weight. As the filler there is particularly suitable, alone or in combination, the metals of tungsten, copper, aluminum and iron. The electrically conductive filler prevents penetration of the electromagnetic radiation emanating from the arc into the interior of the blast nozzle, resulting in an appreciable reduction in nozzle burn-off.

REFERENCES:
patent: 2337949 (1943-12-01), Walle
patent: 2875302 (1959-02-01), Immel et al.
patent: 3021409 (1962-02-01), Cobine et al.
patent: 4011426 (1977-03-01), Lange

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