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. 17, 2001
Filed:
Mar. 20, 2000
Applicant:
Inventors:
Assignee:
NKK Corporation, Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
B23K 1/104 ;
U.S. Cl.
CPC ...
B23K 1/104 ;
Abstract
A flash-butt welder having a stationary head,and a moving head,a pair of electrodes,, and,coupled to each of the stationary and moving heads, respectively, power source transformers,through,are located at the stationary head,side. Four bus bars,through,connecting the power source transformers,through,with the electrodes,, and,are arranged at symmetrical positions surrounding a billet,. However, the number of bus bars,,and,, which are connected to the electrodes,and,at the moving head,side is half the total number of four bus bars.