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:
Sep. 11, 2012
Filed:
Jun. 09, 2006
Applicants:
Karl-heinz Kummer, Duisburg, DE;
Dieter Borgwardt, Dorsten, DE;
Inventors:
Karl-Heinz Kummer, Duisburg, DE;
Dieter Borgwardt, Dorsten, DE;
Assignee:
SMS Siemag Aktiengesellschaft, Düsseldorf, DE;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
C21C 7/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
The invention relates to a melting or reduction furnace (), in which the charge stock () is supplied using feed pipes (). Each feed pipe () has a mouthpiece () that is not cooled and is configured from an uncooled wear-resistant inner guide pipe () and an uncooled concentric, heat-resistant outer protective pipe ().