US PATENT SUBCLASS 218 / 6
.~.~ Sequential break

Current as of: June, 1999
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218 /   HD   HIGH-VOLTAGE SWITCHES WITH ARC PREVENTING OR EXTINGUISHING DEVICES

1  DF  ARC PREVENTING OR EXTINGUISHING DEVICES {14}
2  DF  .~ Multiple break {5}
6.~.~ Sequential break

DEFINITION

Classification: 218/6

Sequential break:

(under subclass 2) Subject matter wherein the means for preventing or extinguishing electric arc comprises a low impedance resistor in series with each of the circuit breakers to establish a plurality of breaks in succession.

SEE OR SEARCH THIS CLASS, SUBCLASS:

143, for resistance inserting feature.