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:
Dec. 22, 2009
Filed:
Mar. 16, 2005
Satoshi Hirano, Hitachi, JP;
Kinya Aota, Hitachi, JP;
Masahisa Inagaki, Hitachi, JP;
Kazutaka Okamoto, Hitachi, JP;
Tomio Odakura, Hitachi, JP;
Satoshi Hirano, Hitachi, JP;
Kinya Aota, Hitachi, JP;
Masahisa Inagaki, Hitachi, JP;
Kazutaka Okamoto, Hitachi, JP;
Tomio Odakura, Hitachi, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
A problem of FSW spot-welding is that a bonding strength tends to be low, since an area of metallic bonding is limited to the neighborhood of a pin portion of the welding tool. In order to solve the problem, after a tool () is inserted into a member () to be welded, a rotation shaft of the welding tool is tilted around a predetermined point () as a fulcrum, and the tip portion of the welding tool () is swung to enlarge a plastic flow area caused by rotation of the tool. As a result, the welding strength can be increased.