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:
Mar. 30, 1999
Filed:
May. 23, 1997
Applicant:
Inventor:
Christof Dratner, Osnabruck, DE;
Assignee:
KM Europa Metal AG, Osnabruck, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H05B / ;
U.S. Cl.
CPC ...
373103 ; 373101 ;
Abstract
An apparatus for transferring the electrical energy from a furnace transformer to the electrodes of a three-phase arc furnace held by coplanar mast arms. A mast arm for the center current phase is made of aluminum or a material with a similar permeability. The conductor of the center current phase, which is made of at least one high-current tube made of a material with good electrical conductivity, is mounted in insulated fashion in the mast arm and has a smaller geometrical diameter than the conductors for the outer current phases provided by the other two mast arms.