US PATENT SUBCLASS 219 / 124.02
.~.~ With gap control

Current as of: June, 1999
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219 /   HD   ELECTRIC HEATING

50  DF  METAL HEATING (E.G., RESISTANCE HEATING) {19}
121.11  DF  .~ By arc {16}
124.02.~.~ With gap control {1}
124.03  DF  .~.~.~> By arc voltage

DEFINITION

Classification: 219/124.02

With gap control:

(under subclass 121) Subject matter wherein the arc torch is regulated by sensor means responsive to an arc current or voltage characteristic occurring in the gap between the arc torch and the work.

SEE OR SEARCH THIS CLASS, SUBCLASS:

69, for gap spacing control in cutting or disintegrating electric heating.

130.01, for circuits for monitoring arc parameters.

130.21+, for automatic output control of arc-power supplies.