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:
May. 14, 2002
Filed:
Feb. 26, 2001
Takeshi Kawasaki, Kudamatsu, JP;
Toshiaki Sagawa, Kudamatsu, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
The object of the present invention is to weld a hollow-shaped material from one side, regardless of the size accuracy of the hollow-shaped material or the like, and to form the joint with higher strength. Projecting segments of face plates of hollow-shaped materials are friction stir welded from above. Next, a connecting material is placed on the upper face plates of the hollow-shaped materials , and is friction stir welded from above. The welding region exists at the node between a rib connecting the two face plates ( ) and the face plate ( ). The joint of the connecting material and the face plates are lap joint. Not butt joint. Therefore, the hollow-shaped materials could be welded with ease, even though there exists manufacturing tolerance, or tolerance in arrangement of the hollow-shaped materials
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile