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:
Apr. 10, 1984
Filed:
Apr. 19, 1982
Applicant:
Inventors:
Bo Rappinger, Vaster.ang.s, SE;
Sven-Einar Stenkvist, Vaster.ang.s, SE;
Assignee:
ASEA AB, Vaster.ang.s, SE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H05B / ;
U.S. Cl.
CPC ...
373 95 ;
Abstract
An electric arc furnace has an electrically conductive roof with an electrode opening through which an arcing electrode depends with the opening closed around the electrode by an upstanding tubular electrically insulating refractory column surrounding the electrode and mounting on its top an electrically conductive electrode seal.