Electricity: circuit makers and breakers – Liquid contact – Time delay
Patent
1977-08-11
1979-07-31
Macon, Robert S.
Electricity: circuit makers and breakers
Liquid contact
Time delay
200150G, H01N 3388
Patent
active
041631315
ABSTRACT:
A fluid-blast circuit-interrupter of the puffer-type is provided having two connected piston structures, one designated herein as a primary piston structure, and the other termed a secondary piston structure, connected serially mechanically in tandem series arrangement to thereby compress a suitable arc-extinguishing fluid in two separate compression chambers. Valve action is utilized to delay the initiation of the second gas-blast from the second compression chamber toward the arc until the separable interrupting contacts have reached a desired predetermined contact separation distance. By suitably changing the component dimensions of the interrupter, the degree of gas compression, and the instant of gas-blast application of the second arc-extinguishing blast, may be changed without delaying the instant of initial contact separation.
REFERENCES:
patent: 3331935 (1967-07-01), Milianowicz
patent: 3786215 (1974-01-01), Mauthe
patent: 3991292 (1976-11-01), Perkins
Elchik W. A.
Macon Robert S.
Westinghouse Electric Corp.
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