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:
Jan. 26, 1988
Filed:
Feb. 19, 1986
Applicant:
Inventor:
Manfred Winkelmann, Krefeld, DE;
Assignee:
Didier-Werke AG, Wiesbaden, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C21C / ;
U.S. Cl.
CPC ...
266 47 ; 266270 ;
Abstract
The invention relates to a sleeve for blowing solid materials into molten metal baths, specifically molten steel baths, through the wall of a ladle containing the molten metal bath. To improve the characteristics of such a sleeve, the invention proposes that a forward sleeve section, facing the molten metal bath, be made of an insulating material with lower thermal conductivity than that of the material of the middle and rear sleeve section.