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. 22, 2005
Filed:
Aug. 28, 2002
Applicants:
Ryooji Ishida, Yamaguchi, JP;
Kazushige Fukuyori, Yamaguchi, JP;
Norihisa Okada, Yamaguchi, JP;
Inventors:
Assignee:
Hitachi, Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B23K020/12 ;
U.S. Cl.
CPC ...
Abstract
Two membersandare welded together by cutting a groovehaving a determined cross-sectional shape using a cutting toolalong the abutted portion between the two membersand, inserting a filler membersubstantially having the same cross-sectional shape to the groove so as to substantially eliminate the gap at the abutted portion, temporarily welding together the projectionsand the filler member, and thereafter, friction stir welding the membersand the filler membertogether completely using a rotary tool