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:
May. 25, 1982
Filed:
Jan. 30, 1981
Applicant:
Inventors:
Wilhelm Langenfeld, Dusseldorf, DE;
Jacques Brihay, St.-Etienne, BE;
Assignee:
Didier-Werke A.G., Wiesbaden, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C21C / ; C21B / ;
U.S. Cl.
CPC ...
75 59 ; 75 60 ; 266217 ; 266220 ; 266265 ;
Abstract
A vessel, such as a ladle or converter has a wall having extending therethrough a bore. A tube is fixed in a gas tight manner within the bore. The tube has therethrough a cylindrical passage. At least one gas permeable insert is fitted in a gas tight manner within the passage. The insert may be a pre-shaped insert or may be a mass tamped and packed into the passage. The insert may be replaced by drilling the insert from the passage of the tube and fitting a new insert within the passage. A gas connection is connected to the outer end of the tube to supply gas into the tube and through the insert into the interior of the vessel.