US PATENT SUBCLASS 218 / 112
.~.~.~ Oil poor breaker

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}
89  DF  .~ Interposed non-conductor {3}
91  DF  .~.~ Liquid {14}
112.~.~.~ Oil poor breaker

DEFINITION

Classification: 218/112

Oil poor breaker:

(under subclass 91) Subject matter wherein the circuit breaker has an arc-enclosing switching chamber containing a quantity of oil sufficient for arc extinction by blast action, but much smaller than the quantity needed in conventional tank-type oil breakers.