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:
Feb. 04, 2020
Filed:
Sep. 21, 2017
Honda Motor Co., Ltd., Tokyo, JP;
Yutaka Arimura, Saitama, JP;
Yosuke Tanaka, Saitama, JP;
HONDA MOTOR CO., LTD., Tokyo, JP;
Abstract
A magnetostrictive torque sensor is provided that is capable of maintaining high detection accuracy, even when an excessive torque acts on a rotary shaft. The magnetostrictive torque sensor includes a magnetostrictive filmthat is arranged on a second steering shaft, or a rotary shaft, having a substantially columnar shape so as to surround the second steering shaftaround its axis, and detects a rotational torque about the axis acting on the second steering shaftbased on a change in a magnetic property of the magnetostrictive film. Compressive stress remains on an outer circumferential surface of a sensor regionof the second steering shaftaround which the magnetostrictive filmis arranged. A plated layer of the magnetostrictive filmis arranged on the outer circumferential surface of the sensor regionin which compressive stress remains.