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.

Date of Patent:
Nov. 08, 1988

Filed:

Jan. 30, 1987
Applicant:
Inventors:

Alexander Y Valchev, Sofia, BG;

Rumen B Radev, Sofia, BG;

German I Germanov, Sofia, BG;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H05B / ;
U.S. Cl.
CPC ...
373108 ;
Abstract

A DC arc furnace for steelmaking in which horizontal steel anodes without internal water cooling are used. The front portion of the anodes enters through holes in the walls into the furnace space and the lower level of the anodes reaches the furnace space in a level which is lower than the door threshold. The rear portion of the anodes is disposed in horizontal ducts outside the furnace hood, these ducts being lined with refractory material. The horizontal components of the anodes are connected to vertical steel components for current supply. The cooling of the horizontal and the vertical components is effected outside the furnace hood by means of components for indirect water cooling, these components being arranged in levels higher than the door threshold.


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Valchev, Alexander. (1988). Direct-current arc furnace for steelmaking (U.S. Patent No. 4783790). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4783790

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