Electricity: circuit makers and breakers – Liquid contact – Time delay
Patent
1982-02-24
1984-07-10
Macon, Robert S.
Electricity: circuit makers and breakers
Liquid contact
Time delay
200146R, 200304, H01H 3302, H01H 3312
Patent
active
044594453
ABSTRACT:
A circuit breaker in which arc shielding members are provided for predetermined contacts among a plurality of contact pairs arrayed in parallel, so that the arc will take place between predetermined contacts when the contacts are opened. The arc shielding members are made of a material having resistivity greater than that of the conductors to which the contacts are attached. The arc shielding members work to effectively inject metallic particles of contact material into the arc, so that the arcing voltage is rapidly raised and so that feet of the arc will not spread to the conductors in the vicinities of the contacts.
REFERENCES:
patent: 537130 (1895-04-01), Sperry
patent: 3402273 (1968-09-01), Davis
patent: 3599130 (1971-08-01), Murai
patent: 3749867 (1973-07-01), Rexroad
Hisatsune Fumiyuki
Terachi Junichi
Yamagata Shinji
Yamamoto Kiyomi
Yoshiyasu Hajimu
Macon Robert S.
Mitsubishi Denki & Kabushiki Kaisha
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