Invention Grant
- Patent Title: Preform, hydroforming method, and hydroformed product
- Patent Title (中): 预成型,液压成型法和液压成型法
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Application No.: US12464402Application Date: 2009-05-12
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Publication No.: US07861489B2Publication Date: 2011-01-04
- Inventor: Kazuto Ueno , Hajime Minagawa , Shinji Ooe , Kazuhiro Mitamura , Satoru Majima , Takashi Haraoka , Masaaki Yoshitome , Hideto Kanafusa , Tomoaki Watari , Tomoyuki Hirota
- Applicant: Kazuto Ueno , Hajime Minagawa , Shinji Ooe , Kazuhiro Mitamura , Satoru Majima , Takashi Haraoka , Masaaki Yoshitome , Hideto Kanafusa , Tomoaki Watari , Tomoyuki Hirota
- Applicant Address: JP Yokohama-shi
- Assignee: Nissan Motor Co., Ltd.
- Current Assignee: Nissan Motor Co., Ltd.
- Current Assignee Address: JP Yokohama-shi
- Agency: Foley & Lardner LLP
- Priority: JP2004-220851 20040728; JP2004-261390 20040908; JP2004-261396 20040908
- Main IPC: E04H1/00
- IPC: E04H1/00

Abstract:
A preform having edges overlapped and jointed, two outer members for forming outer surfaces of a hydroformed product, and reinforcement members for forming reinforcement ribs that divide a hollow cross section of the hydroformed product, including a joint formed by, when more than three sheet materials for forming the outer members and the reinforcement members are overlapped together, welding a first sheet material on a surface of the overlapped sheet materials to a second sheet material positioned inside the first sheet material, and a space disposed and aligned with a joint plane between the second sheet material and a third sheet material located inside the second sheet material during the welding process.
Public/Granted literature
- US20100115773A1 PREFORM, HYDROFORMING METHOD, AND HYDROFORMED PRODUCT Public/Granted day:2010-05-13
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