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. 02, 2016
Filed:
May. 23, 2011
Seiichi Daimaru, Tokyo, JP;
Seiichi Daimaru, Tokyo, JP;
NIPPON STEEL & SUMITOMO METAL CORPORATION, Tokyo, JP;
Abstract
When forming a hat-shaped cross section member having, on its cross section perpendicular to its longitudinal direction, vertical wall portions on both sides, and flange portions on both sides connected to the respective vertical wall portions, and a top sheet portion connected to the vertical wall portions on both sides, and having a bent portion bent in the longitudinal direction with the flange portions positioned outside by using punches and dices, a dice shoulder radius of the dice for obtaining the shape of the hat-shaped cross section member is set to R, the hat-shaped cross section member is formed by the dice having a dice shoulder radius Rlarger than the dice shoulder radius R, and then the hat-shaped cross section member is formed by the dice having the dice shoulder radius R.