Vacuum circuit breakers

Details Vacuum circuit breakers Vacuum circuit breakers

1979-08-15

1983-07-12

Macon, Robert S.

Electricity: circuit makers and breakers

Liquid contact

Time delay

174209, 174 84R, H01H 3366

Patent

active

043932860

ABSTRACT:
A vacuum circuit breaker having a vacuum bulb comprises a coating of a greasy compound of a water repellent material provided on the outer surface of the bulb, and an insulating tube of a water repellent and heat shrinkable material provided on the coating of the greasy compound.

REFERENCES:
patent: 2706742 (1955-04-01), Ehlers
patent: 2870298 (1959-01-01), Schwager
patent: 3297819 (1967-01-01), Wetmore
patent: 3626125 (1971-12-01), Tonegawa
patent: 3812314 (1974-05-01), Nonken
patent: 3955167 (1976-05-01), Kumbera
patent: 4124790 (1978-11-01), Kumbera et al.

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