H - Electricity – 01 – H
Patent
H - Electricity
01
H
306/230
H01H 33/74 (2006.01) H01H 33/91 (2006.01)
Patent
CA 1098943
46,274 DUAL-COMPRESSION GAS-BLAST PUFFER-TYPE INTERRUPTING DEVICE ABSTRACT OF THE DISCLOSURE 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 ser- ially 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 com- pression chamber toward the arc until the separable inter- rupting 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.
307928
Mcconnell And Fox
Westinghouse Electric Corporation
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