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:
Oct. 29, 1985
Filed:
Apr. 17, 1984
Erik Lassander, Viken, SE;
Sven E Stenkvist, Vaster.ang.s, SE;
ASEA Aktiebolag, Vaster.ang.s, SE;
Abstract
A DC arc furnace has a side wall and an electrically conductive hearth, a roof on top of the side wall and over the hearth, an arcing electrode depending through the roof, a plurality of electrical hearth connections extending from the hearth, a first DC power conductor connecting with the hearth connections to provide current and therefore magnetic field symmetry preventing arc deviations, the first and second conductors are extended from a position horizontally offset from the furnace to a point below the hearth and aligned vertically with the electrode, the first conductor forming at least two branches which extend from the point horizontally in opposite directions to beyond the side wall and upwardly so as to jointly connect with the arcing electrode, the second conductor forming at least two branches which extend horizontally from the point in opposite directions with one branch connecting with one of the hearth connections and the other branch connecting with the other one of the hearth connections.