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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.:

US 12065193 B1

PDFFull Text
Date of Patent:
Aug. 20, 2024

Filed:

Jun. 26, 2020

Shock absorbing member, method for producing shock absorbing member, and method for producing steel sheet for cold plastic working

Applicant:

Nippon Steel Corporation, Tokyo, JP;

Inventors:

Mai Nagano, Tokyo, JP;

Shigeru Yonemura, Tokyo, JP;

Akihiro Uenishi, Tokyo, JP;

Assignee:

NIPPON STEEL CORPORATION, Tokyo, JP;

Attorney:

Birch, Stewart, Kolasch & Birch, LLP

Primary Examiner:

Dennis H Pedder

Int. Cl.
CPC ...
B62D 25/04 (2006.01); B21D 53/88 (2006.01); B60R 19/34 (2006.01); B62D 21/15 (2006.01); B62D 25/02 (2006.01); B62D 25/06 (2006.01); B62D 25/08 (2006.01); B62D 25/20 (2006.01); B62D 29/00 (2006.01); C21D 6/00 (2006.01); C21D 9/46 (2006.01); C22C 38/00 (2006.01); C22C 38/02 (2006.01); C22C 38/06 (2006.01); C22C 38/08 (2006.01); C22C 38/12 (2006.01); C22C 38/14 (2006.01); C22C 38/16 (2006.01); C22C 38/38 (2006.01); F16F 7/12 (2006.01);
U.S. Cl.
CPC ...
B62D 25/04 (2013.01); B21D 53/88 (2013.01); B60R 19/34 (2013.01); B62D 21/15 (2013.01); B62D 25/025 (2013.01); B62D 25/06 (2013.01); B62D 25/20 (2013.01); B62D 29/007 (2013.01); C21D 6/001 (2013.01); C21D 6/002 (2013.01); C21D 6/005 (2013.01); C21D 6/008 (2013.01); C21D 9/46 (2013.01); C22C 38/001 (2013.01); C22C 38/002 (2013.01); C22C 38/005 (2013.01); C22C 38/02 (2013.01); C22C 38/06 (2013.01); C22C 38/08 (2013.01); C22C 38/12 (2013.01); C22C 38/14 (2013.01); C22C 38/16 (2013.01); C22C 38/38 (2013.01); F16F 7/12 (2013.01); C21D 2211/008 (2013.01);
Abstract

A shock absorbing member which can increase impact absorption energy and also enables thinning of a steel sheet that is a starting material, a method for producing the shock absorbing member, and a method for producing a steel sheet for cold plastic working are provided. The shock absorbing member includes a ridge portion formed in a curved shape as viewed from a longitudinal direction, and a wall portion extending from the ridge portion. In the wall portion, a ratio σ/τbetween a tensile stress σwhen an elongation in a tensile test is 5% and a shear stress τwhen a shear strain in a shear test is 5√3% is 1.70 or less, or a ratio σ/τbetween a tensile stress σwhen an elongation in a tensile test is 10% and a shear stress τwhen a shear strain in a shear test is 10√3% is 1.70 or less.

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