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:
Nov. 06, 1984
Filed:
Mar. 12, 1982
Applicant:
Inventor:
Erwin Raquet, Witten, DE;
Assignee:
Krupp Stahl AG, Bochum, DE;
Primary Examiner:
Int. Cl.
CPC ...
H05B / ;
U.S. Cl.
CPC ...
373 98 ; 188378 ;
Abstract
The invention relates to an electric arc furnace having three electrodes arranged in a triangle and wherein the electrodes are held by parallel support arms for reducing electrode breakages. At least the support arm of the electrode most susceptible to breakage is provided with a resonance absorber whose natural frequency is tuned to the frequency of the support arm/electrode system for rocking vibrations in the plane of the support arm/electrode.