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:
Sep. 06, 1977
Filed:
Mar. 05, 1976
Applicant:
Inventors:
Naoki Okuda, Fujisawa, JA;
Kazuo Tanaka, Yokosuka, JA;
Assignee:
Kobe Steel Ltd., Kobe, JA;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B23K / ;
U.S. Cl.
CPC ...
2191 / ; 219136 ;
Abstract
A method of preventing base metal end cracks in arc welding characterized by the adaptation of an end tab having three protuberant portions on its end contacting the base metal, wherein the protuberant portions at both ends of the end tab are positioned in abutment on the parts of the base metal which are on both sides of the groove line where the welding arc and the weld metal are not directly contacted, while the protuberant portion in the center is positioned on an extension of the groove line, and welding is carried out with the end tab secured to the welding end of the base metal.