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:
May. 04, 2021
Filed:
Dec. 07, 2015
Applicant:
Nhk Spring Co., Ltd., Kanagawa, JP;
Inventors:
Shinichiro Kuwatsuka, Kanagawa, JP;
Yurika Okudaira, Kanagawa, JP;
Akira Tange, Kanagawa, JP;
Hideki Okada, Kanagawa, JP;
Ken Takahashi, Kanagawa, JP;
Assignee:
NHK SPRING CO., LTD., Yokohama, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C21D 9/00 (2006.01); B21D 53/88 (2006.01); B24C 1/10 (2006.01); C21D 1/60 (2006.01); C21D 6/00 (2006.01); B21D 47/00 (2006.01); C21D 8/06 (2006.01); C22C 38/00 (2006.01); C22C 38/54 (2006.01); C22C 38/44 (2006.01); C22C 38/42 (2006.01); C22C 38/04 (2006.01); C22C 38/02 (2006.01); C21D 7/06 (2006.01); F16F 1/02 (2006.01); F16F 1/14 (2006.01); B60G 21/055 (2006.01); C22C 38/60 (2006.01); C21D 9/02 (2006.01); C21D 9/08 (2006.01);
U.S. Cl.
CPC ...
C21D 9/0068 (2013.01); B21D 47/00 (2013.01); B21D 53/88 (2013.01); B24C 1/10 (2013.01); B60G 21/055 (2013.01); C21D 1/60 (2013.01); C21D 6/00 (2013.01); C21D 6/004 (2013.01); C21D 6/005 (2013.01); C21D 6/008 (2013.01); C21D 7/06 (2013.01); C21D 8/06 (2013.01); C21D 8/065 (2013.01); C21D 9/00 (2013.01); C21D 9/0075 (2013.01); C21D 9/02 (2013.01); C21D 9/08 (2013.01); C22C 38/00 (2013.01); C22C 38/002 (2013.01); C22C 38/02 (2013.01); C22C 38/04 (2013.01); C22C 38/42 (2013.01); C22C 38/44 (2013.01); C22C 38/54 (2013.01); C22C 38/60 (2013.01); F16F 1/02 (2013.01); F16F 1/14 (2013.01); B60G 2206/724 (2013.01); B60G 2206/8103 (2013.01); B60G 2206/8402 (2013.01); B60G 2206/8403 (2013.01); C21D 2211/008 (2013.01); F16F 1/021 (2013.01); F16F 2224/0208 (2013.01); F16F 2226/00 (2013.01);
Abstract
The invention provides a production method for stabilizers which produces with high productivity in a compact production line, without tempering. The production method for stabilizers of the invention includes: forming a steel bar material containing at least C: 0.15 wt % to 0.39 wt %, Mn, B and Fe into a product shape by bending; and quenching the bent steel bar material in a medium having a heat transfer coefficient higher than or close to that of water.