US PATENT SUBCLASS 373 / 163
.~.~ Crucible or hearth


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

138  DF  INDUCTION FURNACE DEVICE {10}
159  DF  .~ Core-type (i.e., channel) {5}
163.~.~ Crucible or hearth


DEFINITION

Classification: 373/163

Crucible or hearth:

(under subclass 159) Subject matter including means to contain the charge while the charge is being heated.

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+, for coreless induction furnace crucible details.

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 crucible used in the metallurgical treatment of molten material.

432, Heating,

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