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:
Aug. 23, 1977
Filed:
Jul. 27, 1976
Applicant:
Inventor:
Emile Sprunck, T7250 Moyeuvre Grande, FR;
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C21B / ;
U.S. Cl.
CPC ...
266268 ; 266186 ;
Abstract
Blast furnace tuyere comprising three separate injection chambers, a first axial chamber for injecting hot blast, a second narrow annular chamber concentric therewith for injecting fuel oil and a third annular chamber concentric with the other two for injecting oxygen mixed with cold air. This tuyere dispenses with a water cooling circuit.