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. 01, 1983
Filed:
Jul. 10, 1980
Applicant:
Inventors:
Bernard Guilpain, Saint Etienne, FR;
Xavier Tinchant, Villars, FR;
Assignee:
Clesid S.A., Saint-Chamond, FR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F27D / ;
U.S. Cl.
CPC ...
373 74 ;
Abstract
A dome for an electric arc furnace comprising a central portion of refractory material and a cooled metallic crown consisting of two toroidal conduits joined by radial tubes in such a manner that it is curved. Its own volume permits variations in gas emissions during steel production to be absorbed. It comprises a manifold which fits into an extraction pipeline, so that most of the gas may be collected so as to avoid pollution. A fluid circulates in the conduits and the tubes to cool the crown.