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:
Feb. 19, 1991
Filed:
Aug. 17, 1989
Applicant:
Inventors:
Robert Mousel, Dudelange, LU;
Carlo Lux, Bertrange, LU;
Francois Knaff, Niederkorn, LU;
Henri Klein, Bergem, LU;
Romain Henrion, Esch/Alzette, LU;
Carlo Heintz, Luxembourg, LU;
Michel Decker, Soleuvre, LU;
Andre Bock, Luxembourg, LU;
Assignee:
Arbed S.A., Luxembourg, LU;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C21C / ;
U.S. Cl.
CPC ...
266225 ; 266217 ;
Abstract
A gas injection lance for use in metal refining is disclosed. The lance includes a tube having an inner diameter profile and a throttle member slidably received with the tube. The tube and throttle member define an annular gas flowpath. The throttle body may be moved axially within the tube to modify the characteristics of the flowpath.