US PATENT SUBCLASS 218 / 77
.~.~.~ Shielding

Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999      Terms of Use


218 /   HD   HIGH-VOLTAGE SWITCHES WITH ARC PREVENTING OR EXTINGUISHING DEVICES

1  DF  ARC PREVENTING OR EXTINGUISHING DEVICES {14}
43  DF  .~ Air-current blowout {18}
68  DF  .~.~ Sealed chamber {10}
77.~.~.~ Shielding

DEFINITION

Classification: 218/77

Shielding:

(under subclass 68) Subject matter including a protecting or screening means to protect terminals or conductors from electric or magnetic fields generated within the device.

SEE OR SEARCH THIS CLASS, SUBCLASS:

136+, for vacuum circuit interrupter house shielding.

147, for general electrical connecting means with arc shielding.