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:
Jul. 11, 1978
Filed:
Apr. 26, 1977
Sten Kollberg, Vesteras, SE;
ASEA Aktiebolag, Vesteras, SE;
Abstract
A DC electric arc furnace melt connection of the type formed by a metal connector with an inner end melted by the melt and an outer end kept solid by cooling, extends from the furnace hearth at a declination straight and free from curvature and with a uniform and constant cross-sectional area from end to end having a rectangular oblong cross sectional shape with the long sides extending in a horizontal direction. The purpose is to reduce the flow currents normally formed by gas bubbles and electrodynamic effects within the melted portion of the connector and which cause the melted part to wipe over the unmelted part of the connector with the undesirable result of promoting heat exchange between the two parts.