US PATENT SUBCLASS 218 / 136
.~.~.~.~ Shielding

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}
118  DF  .~ Vacuum {5}
121  DF  .~.~ Single-pole {3}
134  DF  .~.~.~ Housing structure {3}
136.~.~.~.~ Shielding {1}
137  DF  .~.~.~.~.~> With support

DEFINITION

Classification: 218/136

Shielding:

(under subclass 134) Subject matter wherein the vacuum switch is provided with shielding means for preventing arc generated metallic vapor from condensing on the insulating housing of the switch or with means for electrostatically shielding the seal between the associated metal end cap and the insulating housing of the switch.

SEE OR SEARCH THIS CLASS, SUBCLASS:

77, for sealed chamber circuit interrupter.

147, for general electrical connecting means with arc shielding.