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:
Aug. 22, 2023
Filed:
Dec. 11, 2019
Nsk Ltd., Tokyo, JP;
Kota Fukuda, Kanagawa, JP;
Junji Ono, Kanagawa, JP;
Teruyuki Nakamura, Tokyo, JP;
Yuta Sugiyama, Tokyo, JP;
NSK LTD., Tokyo, JP;
Abstract
A method for manufacturing a magnetostrictive torque sensor shaft () to which a sensor portion () of a magnetostrictive torque sensor () is to be attached includes: a heat treatment step of subjecting an iron-based shaft member to a carburizing, quenching, and tempering process; a shot peening step of performing shot peening using a steel shot media having a Vickers hardness at least equal to 1100 and at most equal to 1300, at least in a position on the shaft member, after the heat treatment step, to which the sensor portion () is to be attached; and a surface polishing step of subjecting the shaft member after the shot peening to surface polishing.