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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 10549594 B1

PDFFull Text
Date of Patent:
Feb. 04, 2020

Filed:

Nov. 10, 2015

Leaf spring device and method for manufacturing leaf spring device

Applicant:

Nhk Spring Co., Ltd., Yokohama-shi, Kanagawa, JP;

Inventors:

Hidenori Chihara, Kanagawa, JP;

Hiroto Tsuji, Kanagawa, JP;

Shinichiro Kuwatsuka, Kanagawa, JP;

Assignee:

NHK SPRING CO., LTD., Yokohama-shi, Kanagawa, JP;

Attorney:

Merchant & Gould P.C.

Primary Examiner:

Vishal R Sahni

Int. Cl.
CPC ...
B60G 11/04 (2006.01); C21D 9/02 (2006.01); B21D 19/12 (2006.01); B21D 53/88 (2006.01); F16F 1/26 (2006.01); F16F 3/02 (2006.01);
U.S. Cl.
CPC ...
B60G 11/04 (2013.01); B21D 19/12 (2013.01); B21D 53/886 (2013.01); C21D 9/02 (2013.01); F16F 1/26 (2013.01); F16F 3/023 (2013.01); C21D 2221/01 (2013.01); F16F 2226/02 (2013.01);
Abstract

A leaf spring device includes a main leaf made of a steel plate including an elastic section configured to generate elastic force when bent; and an eye section formed in an end portion of the elastic section, the elastic section and the eye section being tempered. There is also provided a method for manufacturing the leaf spring device. The eye section is formed by rolling the end of the elastic section into a circular form. The eye section is tempered at a higher temperature than the elastic section.

Find Patent Forward Citations

Chihara, Hidenori. (2020). Leaf spring device and method for manufacturing leaf spring device (U.S. Patent No. 10549594). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/10549594

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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