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:
Jun. 08, 2021
Filed:
Dec. 21, 2017
Applicant:
Benteler Automobiltechnik Gmbh, Paderborn, DE;
Inventors:
Markus Kettler, Paderborn, DE;
Georg Frost, Steinheim, DE;
Frank Rabe, Hiddenhausen, DE;
Karsten Bake, Delbrück, DE;
Assignee:
Benteler Automobiltechnik GmbH, Paderborn, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B21D 28/26 (2006.01); B21D 28/16 (2006.01); B21D 22/20 (2006.01); B21D 53/88 (2006.01); C21D 1/673 (2006.01);
U.S. Cl.
CPC ...
B21D 28/26 (2013.01); B21D 28/16 (2013.01); B21D 22/208 (2013.01); B21D 53/88 (2013.01); C21D 1/673 (2013.01); C21D 2261/00 (2013.01);
Abstract
A hot-formed metal sheet has a tensile strength Rm>1300 megapascal (MPa) and includes an opening which is produced by high-speed punching at a speed of a punch of more than 6 m/s in the absence of a counter holder of a contour matching a contour of the punch, with a smooth cut proportion of the cutting surface of the opening amounting to more than 50%.