US PATENT SUBCLASS 373 / 122
.~.~.~ Including crucible or hearth structure details

Current as of: June, 1999
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373 /   HD   INDUSTRIAL ELECTRIC HEATING FURNACES

109  DF  RESISTANCE FURNACE DEVICE {7}
117  DF  .~ With heating element detail {7}
120  DF  .~.~ Open circuit (e.g., charge internal resistance heating) {4}
122.~.~.~ Including crucible or hearth structure details

DEFINITION

Classification: 373/122

Including crucible or hearth structure details:

(under subclass 120) Subject matter including structural details of the means which holds the melt.

SEE OR SEARCH THIS CLASS, SUBCLASS:

11, for electron beam furnace crucible construction.

30+, for glass furnace crucible details.

72+, for arc furnace crucible details.

118, for crucible details in resistance furnaces where the crucible is a resistance heating element.

156+, and 163, for induction furnace crucible details for coreless and core-type induction furnaces respectively.

SEE OR SEARCH CLASS 118, Coating Apparatus,

726+, for details of crucible structures which contain coating material during vaporization.

164, Metal Founding,

335+, for metal molding apparatus receptacles for holding, or dispensing molten material.

219, Electric Heating,

420+, for electric heating devices combined with nominally disclosed crucible, or furnace-type containers.

266, Metallurgical Apparatus,

167, and 275+ for details of crucibles used in the metallurgical treatment of molten material.

432, Heating,

156+, and 262+ for details of crucibles where the heating means is nonelectric.