US PATENT SUBCLASS 219 / 68
.~ Cutting or disintegrating (e.g., machining engraving)


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

50  DF  METAL HEATING (E.G., RESISTANCE HEATING) {19}
68.~ Cutting or disintegrating (e.g., machining engraving) {2}
69.1  DF  .~.~> Electric arc
69.11  DF  .~.~> Electric spark machining {10}


DEFINITION

Classification: 219/68

(under subclass 50) Subject matter utilized for cutting or disintegrating.

(1) Note. This subclass relates, for example, to the severing of a wire cable by passing a fusing current through a short section thereof, or to the etching of a monogram into the surface of the metal.

SEE OR SEARCH THIS CLASS, SUBCLASS:

19, for similar subject matter not having metallic workpieces as, for example, perforating of paper by sparks and machining of nonmetal by electron beams.

SEE OR SEARCH CLASS

175, Boring or Penetrating the Earth, 16, for an electrical heating process or device for forming a hole in the earth by directly applying heat to fluidize or comminute the material forming the earth.

205, Electrolysis: Processes, Compositions Used Therein and Methods of Preparing the Compositions,

640+, for electrolytic erosion of a workpiece to change the shape or surface configuration thereof.

216, Etching a Substrate: Processes,

75, and 100 for the etching of metal.