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:
Sep. 17, 2019
Filed:
Mar. 16, 2016
Applicant:
Nhk Spring Co., Ltd., Kanagawa, JP;
Inventors:
Yutaka Wakabayashi, Kanagawa, JP;
Ken Takahashi, Kanagawa, JP;
Masato Sugawara, Kanagawa, JP;
Hideki Okada, Kanagawa, JP;
Assignee:
NHK Spring Co., Ltd., Kanagawa, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C21D 9/08 (2006.01); B21D 53/88 (2006.01); B60G 21/055 (2006.01); B21D 7/00 (2006.01); B21D 7/16 (2006.01); C21D 1/60 (2006.01); C23C 8/46 (2006.01);
U.S. Cl.
CPC ...
C21D 9/08 (2013.01); B21D 7/00 (2013.01); B21D 7/165 (2013.01); B21D 53/88 (2013.01); B60G 21/055 (2013.01); C21D 1/60 (2013.01); C23C 8/46 (2013.01); B60G 2206/427 (2013.01); B60G 2206/724 (2013.01); B60G 2206/8103 (2013.01); B60G 2206/8402 (2013.01); B60G 2206/8403 (2013.01);
Abstract
A method of manufacturing a hollow stabilizer includes a forming step of subjecting an element pipe to a bending process, to form a product shape including bent portions, and a quenching step of quenching the element pipe subjected to the bending process. In the quenching step, a cooling process is performed by immersing the element pipe made of steel in coolant and by spraying the coolant to an outer surface of the bent portion.