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:
Dec. 29, 1981
Filed:
Apr. 25, 1980
Applicant:
Inventors:
Giovanni Guarino, Axa-Acilia, IT;
Alberto Praitoni, Pomezia, IT;
Vittorio Saverese, Martina Franca, IT;
Assignee:
Italsider S.p.A., Genoa, IT;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C21D / ; C21B / ;
U.S. Cl.
CPC ...
75 53 ; 75 58 ; 75 9 / ; 7513 / ; 266120 ; 266265 ;
Abstract
Solid substances are introduced into a bath of molten metal by pushing a hollow metal tube filled with the solid substance, through a tubular former that imparts a spiral shape to the carrier tube. The spiral rotates about a vertical axis as it descends into the bath of molten metal.