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:
Apr. 23, 2024
Filed:
May. 09, 2019
Mitsubishi Steel Mfg. Co., Ltd., Tokyo, JP;
Tomohiro Yamazaki, Ichihara, JP;
Fumihiro Kino, Ichihara, JP;
Yoshizumi Fukuda, Ichihara, JP;
Yuji Soda, Ichihara, JP;
MITSUBISHI STEEL MFG. CO., LTD., Tokyo, JP;
Abstract
Provided is a method of manufacturing a spring for inspecting the stress distribution of the spring under load. The method for manufacturing a spring () includes the steps of applying a load to the spring (), measuring the stress of the spring () under the load, and releasing the load applied to the spring (), the measuring the stress of the spring () being made by measuring the stress on the surface of the active part of the spring () using X-ray diffraction with the cos α method, and the method further including the step of determining whether the magnitude of the stress of the spring () meets a criterion.