The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 23, 1987
Filed:
Feb. 05, 1985
Herbert Wilhelmi, Aachen-Richterich, DE;
Kurt Kegel, Essen, DE;
Claudio Conradty, Rothenbach, DE;
Dieter Zollner, Schwaig b. Nuremberg, DE;
Inge Lauterbach-Dammler, Nuremberg, DE;
Friedrich Rittmann, Ruckersdorf, DE;
C. Conradty Nurnberg GmbH & Co. KG, Rothenbach a.d. Pegnitz, DE;
Abstract
A direct current arc furnace has at least one anode movable into the furnace interior and at least one cathode also movable from above into the furnace interior, between which cathode and the inserted material or the melt an arc is produced. The anode contains a cooling system in its interior having a controller which cools at least the immersion region of the anode to a temperature which is lower than the temperature of the melt. This furnace device and the anode are utilized in methods for melting and heating of materials with advantage, at least the immersion region of the anode being maintained at a temperature which lies below the temperature of the melt.