Blank, formed article, die assembly, and method for producing blank

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 11904374
APP PUB NO 20200230682A1
SERIAL NO

16815095

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Abstract

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A sheet-shaped blank (10) for press forming is produced by shearing a metal sheet (30). The blank (10) includes a sheared edge (14), which includes a sheared surface (14b) and a fractured surface (14c) in the sheet thickness direction and has a loop shape in plan view. In plan view, an edge of the sheared edge (14) includes concavely curved portions (20). The average of lengths of the fractured surface (14c) in the sheet thickness direction in the curved portions (20) is greater than the average of lengths of the fractured surface (14c) in the sheet thickness direction over the entire perimeter of the sheared edge (14).

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Patent Owner(s)

Patent OwnerAddress
NIPPON STEEL CORPORATION6-1 MARUNOUCHI 2-CHOME CHIYODA-KU TOKYO

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Egami, Akira Tokyo, JP 6 27
Matsuno, Takashi Tokyo, JP 27 89

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