US PATENT SUBCLASS 218 / 10
.~.~ Vacuum switch

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}
8  DF  .~ Auxiliary shunt {8}
10.~.~ Vacuum switch

DEFINITION

Classification: 218/10

Vacuum switch:

(under subclass 8) Subject matter wherein the contacts are enclosed in an evacuated housing.

(1) Note. The housing may be referred to as a tube or bulb.

SEE OR SEARCH THIS CLASS, SUBCLASS:

42, for magnetic blowout circuit interrupter.

118+, for general arc preventing devices.