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:
Oct. 17, 2006
Filed:
Mar. 04, 2004
Masakuni Ezumi, Hofu, JP;
Masaaki Shigeyama, Kudamatsu, JP;
Tetsuya Matsunaga, Kudamatsu, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
The purpose of the present invention is to provide a method that can be easily applied to friction stir welding where the thickness of face plates at one welding portion is different from the thickness of face plates at another welding portion. Three shape membershaving two butt joint portions are mounted on a jig. The face plateof shape memberis thick and the face plateof shape memberis thin. The protruded height of projectionis greater at portion B where surface platesbeing welded are thin than the protruded height of projection A where surface platesare thick. The depths for inserting rotary tools to shape membersfor friction stir welding are the same. Friction stir welding is facilitated since the size and insertion depth of all the rotary tools being applied can be the same.