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:
Feb. 28, 2006
Filed:
Feb. 18, 2002
Toru Takatani, Tsuchiura, JP;
Yutaka Takano, Inashiki-gun, JP;
Naoki Miyanagi, Niihari-gun, JP;
Hikaru Yamamoto, Ryugasaki, JP;
Shigeyuki Sakurai, Tsukuba, JP;
Manabu Hirakawa, Niihari-gun, JP;
Toru Takatani, Tsuchiura, JP;
Yutaka Takano, Inashiki-gun, JP;
Naoki Miyanagi, Niihari-gun, JP;
Hikaru Yamamoto, Ryugasaki, JP;
Shigeyuki Sakurai, Tsukuba, JP;
Manabu Hirakawa, Niihari-gun, JP;
Hitachi Construction Machinery Co., Ltd., Tokyo, JP;
Abstract
A welding method is disclosed for butt welding a first base materialand a second base materialwith each other. To also permit stable and efficient formation of a bead in the form of a fillet weld on a back side of a groove by conducting arc welding from the side of the groove without arranging a bead beforehand on the back side of the groove, the first memberon which a root faceand a single groove facehave been formed, is brought at its root faceinto contact with a flat surfaceof the second base materialA welding wireis arranged facing on the groove formed by the contact between the first base materialand the second base materialThe first base materialand the second materialare caused to fuse at an area of contact between them by an arc from the welding wireA melt, which has been formed by the fusion at the area of contact and the like, is forced out to the back side of the groove to form a bead Bin the form of a fillet weld on the back side of the groove.