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. 31, 1983
Filed:
Mar. 02, 1981
Applicant:
Inventors:
Pierre J Leroy, Saint-Germain-en-Laye, FR;
Maurice Deschamps, Roche-la-Moliere, FR;
Emile Sprunck, 57250 Moyeuvre Grande, FR;
Assignees:
Creusot-Loire, Paris, FR;
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C21B / ;
U.S. Cl.
CPC ...
266268 ; 75 52 ; 75 59 ; 75 60 ;
Abstract
Tuyere for the processing of metals in the liquid, solid or pasty state, and capable of introducing simultaneously and separately a gas and a powdered material. The tuyere comprises at least two well-centered concentric tubes, the gas being introduced into a non-external tube, and the powdered and compressed material being introduced into another tube, which is lubricated on its inner wall by a film of a lubricating substance introduced through a slot formed therein. The outer tube is traversed by an agent protecting the tuyere against its hot wear.