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. 13, 2007
Filed:
Sep. 20, 2002
Izuru Hori, Sayama, JP;
Kouki Mizutani, Sayama, JP;
Manabu Maruyama, Sayama, JP;
Kenji Miyanaga, Sayama, JP;
Yuji Kanai, Sayama, JP;
Kazuo Isogai, Sayama, JP;
Izuru Hori, Sayama, JP;
Kouki Mizutani, Sayama, JP;
Manabu Maruyama, Sayama, JP;
Kenji Miyanaga, Sayama, JP;
Yuji Kanai, Sayama, JP;
Kazuo Isogai, Sayama, JP;
Honda Giken Kogyo Kabushiki Kaisha, Tokyo, JP;
Abstract
A process is provided for producing a hollow member having a wall thickness, in a cross section orthogonal to the longitudinal direction, that varies in the longitudinal direction, the process including a heating step of heating a tubular material (Pa) so that the tubular material (Pa) is given a temperature variation in the longitudinal direction, and a stretching step of axially stretching the tubular material (Pa) that has been heated in the preceding step. In this way, a hollow member having a cross-sectional wall thickness that is variable in the longitudinal direction can be easily produced.