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:
Mar. 16, 2004
Filed:
Feb. 28, 2002
Applicant:
Inventors:
Masakuni Ezumi, Kudamatsu, JP;
Kazushige Fukuyori, Kudamatsu, JP;
Assignee:
Hitachi, Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B23K 2/010 ;
U.S. Cl.
CPC ...
B23K 2/010 ;
Abstract
A cutting tool cuts along the butted portion between two members . A filling material is inserted to the gap formed by said cutting, and a roller presses protrusions and to crimp said protrusions and so as to fix said filling material to position. Next, friction stir welding is performed to the protrusions and the filling material using a rotary tool . In another example, instead of cutting, the filling material can be welded and filled to the gap. In yet another example, cutting can be performed so as to approximate the two members before performing the friction stir welding step.