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:
Dec. 26, 1995
Filed:
Dec. 03, 1993
Applicant:
Inventors:
Toshimichi Maki, Tokyo, JP;
Hiroyuki Yamashita, Kurashiki, JP;
Yoshimi Kawazu, Kurashiki, JP;
Hidefumi Nakashima, Kurashiki, JP;
Assignees:
NKK Corporation, Tokyo, JP;
Tokyo Steel M.F.G. Co., Ltd., Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
H05B / ;
U.S. Cl.
CPC ...
373 72 ; 373108 ;
Abstract
A DC arc furnace according to the invention has a bottom electrode, which comprises a plurality of contact pins each having an end to be brought into contact with an object and to supply arc-forming current thereto, a current base electrically connected to the other end of each of the contact pins for distributing current from a power supply to the contact pins, and a cooling device for cooling the current base with the use of cooling water.