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:
Sep. 18, 2001
Filed:
Mar. 24, 1999
Hitachi, Ltd., Tokyo, JP;
Abstract
End portions of extruded frame members,and,have increased thickness portions,and,which project toward an outer side thereof. A rotary body,is inserted into the increased thickness portions,and,and is rotated so as to carry out friction stir welding of the frame members. A large diameter portion,of the rotary body,is inserted to a position between the apex of the increased thickness portion and an extension line of an outer face of the plates,and,of the extruded frame members,and,as the rotary body,is rotated. Further, the rotary body,is reciprocated in a direction orthogonal to the welding line as it is moved along the welding line. Accordingly, friction stir welding can be carried out fully. In the friction stir welding, due to a rotation of the rotary body,, even when a gap g between two extruded frame members to be subjected to welding is large, it is possible to carry out the friction stir welding.