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:
Jul. 29, 2003
Filed:
Nov. 21, 2000
Hideyuki Nakamura, Kudamatsu, JP;
Takeshi Kawasaki, Kudamatsu, JP;
Toshiaki Makino, Kudamatsu, JP;
Yoshihiko Ina, Kudamatsu, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
End portions of face plates and of a hollow extruded frame member are connected with a rib and these end portions are welded to end portions of face plates and of a hollow extruded frame member using friction stir welding. A visible outline of a connection portion of the end portion of the face plate and the rib is constituted by circular arcs and which are recessed in the hollow extruded frame member . A visible outline of a connection portion of the end portion of the face plate and the rib is constituted by circular arcs and which are recessed in the hollow extruded frame member . The diameter of the circular arc ( ) is smaller than the diameter of the circular arc ( ). Accordingly, a structural body having a light weight structure can be obtained.