US PATENT SUBCLASS 218 / 72
.~.~.~ With nozzle

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}
43  DF  .~ Air-current blowout {18}
68  DF  .~.~ Sealed chamber {10}
72.~.~.~ With nozzle {1}
73  DF  .~.~.~.~> With throat region

DEFINITION

Classification: 218/72

With nozzle:

(under subclass 68) Subject matter including a terminal discharging pipe member which is attached to the first of the two contacts members and in which compressed gas is caused to flow from a compression space into an expansion space.

SEE OR SEARCH THIS CLASS, SUBCLASS:

53+, for air-current blowout circuit interrupter.

62, for compressing cylinder in puffer piston circuit interrupter.

63+, for puffer piston circuit interrupter.