US PATENT SUBCLASS 218 / 53
.~.~ 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}
53.~.~ With nozzle {1}
54  DF  .~.~.~> With throat region

DEFINITION

Classification: 218/53

With nozzle:

(under subclass 43) Subject matter including a terminal discharging pipe member which is attached to a first of the two contact members and in which compressed gas is caused to flow from a compression space into an expansion space.

SEE OR SEARCH THIS CLASS, SUBCLASS:

62, for compressing cylinder in puffer piston circuit interrupter.

63+, for puffer piston circuit interrupter.

72+, for sealed chamber circuit interrupter.