US PATENT SUBCLASS 373 / 40
.~.~.~ Regulation

Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999      Terms of Use


373 /   HD   INDUSTRIAL ELECTRIC HEATING FURNACES

27  DF  GLASS FURNACE DEVICE {2}
29  DF  .~ Joule effect heating {4}
39  DF  .~.~ Electrical system {2}
40.~.~.~ Regulation

DEFINITION

Classification: 373/40

Regulation:

(under subclass 39) Subject matter including means to regulate the electrical power supplied to the furnace.

SEE OR SEARCH THIS CLASS, SUBCLASS:

25, for control systems indirect plasma furnaces.

26, for plasma remelting furnace control systems.

49+, for power supply control in electroslag remelting furnaces.

70, 77 and 104+, for control, or regulation of arc furnace devices.

110+, and 135, for control, or regulation of resistance furnace devices.

140+, 148 and 149+, for control, or regulation of induction furnace devices.