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:
Nov. 13, 2001
Filed:
Sep. 24, 1999
Applicant:
Inventors:
Assignee:
Hitachi, Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B23K 2/012 ;
U.S. Cl.
CPC ...
B23K 2/012 ;
Abstract
A raised portion,is provided on an upper face of an end portion of a plate,which forms one side of a frame member,An end portion of a plate,of another frame member,is abutted with the plate,of the frame member,The frame members,and,are aluminum alloy extruded frame members and the direction of extrusion of the two frame members are orthogonal. A welding padding is carried on an upper face of the plate,of the frame member,Under this condition, a rotary tool is inserted from above and a friction stir welding is carried out. Accordingly, the padding serves the same function on the plate,the raised portion,on the plate,so that a good welding can be carried out.