Electricity: circuit makers and breakers – Liquid contact – Time delay
Patent
1975-02-11
1976-08-31
Macon, Robert S.
Electricity: circuit makers and breakers
Liquid contact
Time delay
200144R, H01H 3302
Patent
active
039783006
ABSTRACT:
An improved low-voltage circuit-breaker, adaptable for both alternating-current and direct-current is provided having small contact separation, when opened, and a pair of adjoining arcing-rails arranged in generally-parallel relationship, and having only a small gap therebetween of the order of 1/4 inch or less. Preferably, at the ends of the parallel-arranged arcing-rails are a pair of diverging arc-horns, constituting integral extensions of the parallel-arranged arcing-rails, and resulting in considerable elongation of the established arc upon its movement onto the diverging portions of the arcing-rails.
Preferably, although not necessary, a suitable spaced-plate arc-extinguishing structure is arranged in the vicinity of the diverging portions of the arcing-rails to further facilitate arc extinction, by either elongating the arc around the splitter portions of the insulating plates, if the latter are of insulating material, or causing the formation of a plurality of serially-related arc-portions between spaced conducting metallic plates, if the arc extinguisher is of the spaced-metallic-plate variety.
REFERENCES:
patent: 3402272 (1968-09-01), Jensen
patent: 3489872 (1970-01-01), Casey
Converse, Jr. R. E.
Macon Robert S.
Westinghouse Electric Corporation
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