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:
Mar. 29, 1983
Filed:
Jul. 06, 1981
Applicant:
Inventors:
Bruno Hirschberg, Vienna, AT;
Francois Schleimer, Esch, LU;
Assignee:
Arbed S.A., Luxembourg, LU;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C21B / ;
U.S. Cl.
CPC ...
266265 ; 75 59 ; 75 60 ; 266218 ; 266220 ;
Abstract
A refractory gas permeable structural unit for blowing a gas into a metal treatment container and through its casing, has a refractory gas permeable stone, a first metal housing sealingly surrounding the stone, a second metal housing arranged at a distance from the first metal housing, a refractory substantially gas impermeable filler material provided between the first and second metal housings, and at least one connection and a distribution chamber provided at the end face of the stone.