US PATENT SUBCLASS 219 / 130.5
.~.~.~ With predetermined time variation of arc voltage or current (e.g., programmed)

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}
130.1  DF  .~.~ Including arc-power supplies {5}
130.5.~.~.~ With predetermined time variation of arc voltage or current (e.g., programmed) {1}
130.51  DF  .~.~.~.~> Pulsating or periodic output

DEFINITION

Classification: 219/130.5

With predetermined time variation of arc voltage or current (e.g., programmed):

(under subclass 130.1) Subject matter including circuit means to constrain the arc voltage or current to follow a preestablished temporal pattern.

SEE OR SEARCH THIS CLASS, SUBCLASS:

125.1, for predetermined arc welding operation.