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. 06, 2010
Filed:
Jul. 13, 2006
Tadashi Ishikawa, Futtsu, JP;
Takehiro Inoue, Futtsu, JP;
Hiroshi Shimanuki, Futtsu, JP;
Tadashi Koseki, Futtsu, JP;
Tadashi Ishikawa, Futtsu, JP;
Takehiro Inoue, Futtsu, JP;
Hiroshi Shimanuki, Futtsu, JP;
Tadashi Koseki, Futtsu, JP;
Nippon Steel Corporation, Tokyo, JP;
Abstract
A welding method for manufacturing welded structures having excellent properties to prevent the propagation of brittle fracture occurring in welded joints, characterized by the step of forming a repair weld having a greater toughness than that of a butt weld and an outer edge whose angle φ with respect to the longitudinal direction of the butt weld is not less than 10 degrees and not more than 60 degrees, by applying repair welding to a region to arrest a brittle crack in a butt-welded joint where a brittle crack is likely to propagate after removing part of the butt-welded joint, in said region, by gouging or machining.