US PATENT SUBCLASS 148 / 566
.~.~ Electric heating with work as conductor (e.g., alternating current, induction, etc.)

Current as of: June, 1999
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148 /   HD   METAL TREATMENT

95  DF  PROCESS OF MODIFYING OR MAINTAINING INTERNAL PHYSICAL STRUCTURE (I.E., MICROSTRUCTURE) OR CHEMICAL PROPERTIES OF METAL, PROCESS OF REACTIVE COATING OF METAL AND PROCESS OF CHEMICAL-HEAT REMOVING (E.G., FLAME-CUTTING, ETC.) OR BURNING OF METAL {17}
559  DF  .~ Heating or cooling of solid metal {22}
566.~.~ Electric heating with work as conductor (e.g., alternating current, induction, etc.) {2}
567  DF  .~.~.~> Induction {6}
576  DF  .~.~.~> Wire or filament

DEFINITION

Classification: 148/566

Electric heating with work as conductor (e.g., alternating current, induction, etc.):

(under subclass 559) Process wherein an electric current from an external source is passed through a metal or metal alloy workpiece or is made to flow in a metal or metal alloy workpiece through induction to cause heating thereof.

SEE OR SEARCH THIS CLASS, SUBCLASS:

526, for processes of electric heating wherein an electric

current is passed through a layered metal or metal alloy workpiece or article.