US PATENT SUBCLASS 218 / 99
.~.~.~.~ With venting means

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}
97  DF  .~.~.~ Housing or tank structure {2}
99.~.~.~.~ With venting means

DEFINITION

Classification: 218/99

With venting means:

(under subclass 97) Subject matter including means to release

excess pressure occurring within the housing of the liquid circuit breaker.

SEE OR SEARCH THIS CLASS, SUBCLASS:

35, for magnetic blowout arc chute.

106, for liquid circuit interrupter arcing chamber.

157, for general arc preventing device.