US PATENT SUBCLASS 218 / 9
.~.~ Polyphase


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}
8  DF  .~ Auxiliary shunt {8}
9.~.~ Polyphase


DEFINITION

Classification: 218/9

Polyphase:

(under subclass 8) Subject matter wherein the circuit breaker breaks two or more separate conducting paths for two or more phases of alternating current.

(1) Note. Devices known as bipole or double pole which complete the circuit in each conductor of a direct current circuit will also be found here.

SEE OR SEARCH THIS CLASS, SUBCLASS:

44, for air-current blowout circuit interrupter.

58, for puffer piston circuit interrupter.

71, for sealed chamber circuit interrupter.

101, for liquid circuit interrupter. 119+, for vacuum circuit interrupter.

152+, for general arc preventing devices.