US PATENT SUBCLASS 373 / 138
INDUCTION FURNACE DEVICE

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

138INDUCTION FURNACE DEVICE {10}
139  DF  .~> Zone melting
140  DF  .~> With internal atmosphere control (e.g., pressure, vacuum, etc.) {1}
142  DF  .~> For charging or discharging {1}
144  DF  .~> Having plural heating elements
145  DF  .~> Having condition signaling means
146  DF  .~> With means for manipulation of the charge or melt (e.g., stirring)
147  DF  .~> Power supply system {1}
149  DF  .~> For furnace regulating {1}
151  DF  .~> Coreless {4}
159  DF  .~> Core-type (i.e., channel) {5}

DEFINITION

Classification: 373/138

INDUCTION FURNACE DEVICE:

(under the class definition) Subject matter including an induction coil to subject the charge to a variable electromagnetic field for producing a heating current by internal resistance losses in the charge.

SEE OR SEARCH CLASS

164, Metal Founding,

513, for high frequency induction heating coils combined with metal casting devices.

219, Electric Heating,

600+, for inductive heating, subclasses 678+ for microwave heating, and subclasses 764+ for capacitive dielectric heating.

266, Metallurgical Apparatus,

129, for inductance-type heat treatment means. 336, Inductor Devices, appropriate subclasses for inductive devices, per se.