US PATENT SUBCLASS 219 / 111
.~.~.~ Repeat or interrupted current systems (e.g., multiple welds, multiple heated weld)

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

50  DF  METAL HEATING (E.G., RESISTANCE HEATING) {19}
78.01  DF  .~ For bonding with pressure (e.g., resistance welding) {16}
108  DF  .~.~ Systems of current supply {7}
111.~.~.~ Repeat or interrupted current systems (e.g., multiple welds, multiple heated weld)

DEFINITION

Classification: 219/111

(under subclass 108) Subject matter wherein the current is repeated or interrupted automatically.

(1) Note. This subclass relates, for example, to systems where the current is interrupted so as to give alternate periods of heating and cooling at the same weld, and to systems where the current is interrupted so that it may be distributed to different weld areas.

SEE OR SEARCH THIS CLASS, SUBCLASS:

81+, for roller electrode bonding, some of which utilize interrupted current supply systems.