US PATENT SUBCLASS 373 / 34
.~.~.~ Including batch pre-heating

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

27  DF  GLASS FURNACE DEVICE {2}
29  DF  .~ Joule effect heating {4}
33  DF  .~.~ Charging or discharging {2}
34.~.~.~ Including batch pre-heating

DEFINITION

Classification: 373/34

Including batch preheating:

(under subclass 33) Subject matter wherein the batch is heated prior to being charged into the furnace, also preheating may be achieved by utilizing the waste heat from the furnace, or by means of a separate heat source.

SEE OR SEARCH THIS CLASS, SUBCLASS:

80, for arc furnace charge preheating.