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:
Dec. 26, 1995
Filed:
Jun. 23, 1994
Mathias Blum, Alzenau, DE;
Alok Choudhury, Puttlingen, DE;
Hans-Gunter Fellmann, Obertshausen, DE;
Wilfried Goy, Kelsterbach, DE;
Franz Hugo, Aschaffenburg, DE;
Felix Muller, Biebergmund-Breitenborn, DE;
Wolfgang Schwarz, Linsengericht-Geislitz, DE;
Hardy Weisweiler, Hanau, DE;
Leybold Durferrit GmbH, Cologne, DE;
Abstract
In a melting crucible (3) a central bottom portion (27) is formed of a plurality of palisades (5) and is shaped so that the palisades together form a vessel or a pot (7) having a centrally disposed spout or outlet (8). Two independently powered induction coils (10, 11) are provided, one coil (10) externally surrounding the collar or upper part of the central bottom portion (27), and the other coil (11) externally surrounding the spout (8). The palisades (5) are separated from one another by individual gaps (6) running radially outwardly from the center, while the electromagnetic field of at least the upper coil (10) acts on the charge contained in the melting crucible through the gaps (6).