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. 09, 2010
Filed:
Apr. 27, 2005
Narikazu Hashimoto, Shimonoseki, JP;
Masatoshi Yoshida, Kobe, JP;
Hiroyuki Yamashita, Shimonoseki, JP;
Satoshi Nimura, Shimonoseki, JP;
Toru Hashimura, Kobe, JP;
Yoshihaya Imamura, Fujisawa, JP;
Kazumori Horiguchi, Tokyo, JP;
Narikazu Hashimoto, Shimonoseki, JP;
Masatoshi Yoshida, Kobe, JP;
Hiroyuki Yamashita, Shimonoseki, JP;
Satoshi Nimura, Shimonoseki, JP;
Toru Hashimura, Kobe, JP;
Yoshihaya Imamura, Fujisawa, JP;
Kazumori Horiguchi, Tokyo, JP;
Kabushiki Kaisha Kobe Seiko Sho, Kobe-shi, JP;
Abstract
A target tubular member with flange, such as a bumper stay, has a flange having an outer diameter larger than the diameter of an axial section and is formed by electromagnetic forming without excessive expansion. The tubular member with flange includes an axial member made of a tubular aluminum alloy extrudate and a flange member joined to an end of the axial member. The axial member has an end flange being integrated at its end and having an area smaller than that of the flange member. The flange member has a hole, and a cylindrical hole flange at the edge of the hole. The axial member fits in the hole of the flange member, the end flange is in intimate contact with the flange member, and the outer periphery of a small-diameter portion of the axial member is in intimate contact with the inner periphery of the hole flange. The hole flange is held between the end flange and a protrusion. The tubular member with flange may be produced by inserting an untreated pipe into the hole of the flange member and expanding the untreated pipe by electromagnetic forming.