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:
Nov. 17, 2015
Filed:
Nov. 29, 2012
Mitsubishi Hitachi Power Systems, Ltd., Yokohama, Kanagawa, JP;
Kenji Kawasaki, Tokyo, JP;
Ryuichi Yamamoto, Tokyo, JP;
Shin Nishimoto, Tokyo, JP;
Seiichi Kawaguchi, Hyogo, JP;
MITSUBISHI HITACHI POWER SYSTEMS, LTD., Yokohama, JP;
Abstract
A back-shielded welding method according to the present invention includes communicating a front surface-side and a back surface-side of two welding base materials () with each other in the welding base materials () that abut against each other; forming notched portions () in abutting edge portions () of two welding base materials () in such a manner that a slit-shaped gas supply opening () is formed to extend along a forming direction of a welding bead; forming the gas supply opening () with the notched portions () by abutting the abutting edge portions () of the welding base materials () against each other and temporarily fixing the abutting edge portions (); and forming the welding bead while supplying an inert gas via the gas supply opening (), and blocking the gas supply opening () by the welding bead.