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:
Jan. 15, 2019
Filed:
Sep. 05, 2013
Nippon Steel & Sumitomo Metal Corporation, Chiyoda-ku, Tokyo, JP;
Toshimitsu Aso, Tokyo, JP;
Yasuharu Tanaka, Tokyo, JP;
Takashi Miyagi, Tokyo, JP;
Misao Ogawa, Tokyo, JP;
Kazuyuki Kawano, Tokyo, JP;
NIPPON STEEL & SUMITOMO METAL CORPORATION, Tokyo, JP;
Abstract
A curved parthaving a hat-shaped cross section is produced by press-forming without causing cracks and wrinkles. When producing a curved partwhich is made up of a top plate, vertical wallsandextended in parallel with each other along ridgelinesandof the top plate, and outwardly directed flangesandwhich connect to leading edges of the vertical walls, and has a generally hat-shaped cross section, by press forming, the metal material sheetis interposed and constrained by the dieand the blank holderand is press-formed while the metal material sheetbeing interposed and constrained by the padand the punch