US PATENT SUBCLASS 219 / 97
.~.~ Flash

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}
97.~.~ Flash {2}
98  DF  .~.~.~> Stud {1}
100  DF  .~.~.~> Methods

DEFINITION

Classification: 219/97

(under subclass 78.01) Subject matter in which the metal workpieces to be bonded are heated by an electric arc created between them before pressure is applied.

(1) Note. The metal workpieces may or may not be further heated, after pressure is applied, by means of resistive heating arising from current flowing through the workpiece.

SEE OR SEARCH THIS CLASS, SUBCLASS:

95+, for this subject matter in which the pressure is developed percussively.