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:
Jun. 02, 2009
Filed:
Oct. 04, 2006
Hitoshi Harata, Haga-machi, JP;
Tomohiro Hoshi, Haga-machi, JP;
Yuichi Fukuda, Haga-machi, JP;
Yukiya Kashimura, Haga-machi, JP;
Hitoshi Harata, Haga-machi, JP;
Tomohiro Hoshi, Haga-machi, JP;
Yuichi Fukuda, Haga-machi, JP;
Yukiya Kashimura, Haga-machi, JP;
Honda Motor Co., Ltd., Tokyo, JP;
Abstract
A magnetostrictive torque sensor includes a rotating shaft that is rotated by an applied torque, magnetostrictive films formed around the entire circumferential periphery of a surface of the rotating shaft in at least one location, sensor coils for sensing a change in impedance of the magnetostrictive films, and a torque calculation unit for calculating the torque applied to the rotating shaft on the basis of a signal relating to the change in impedance outputted from the sensor coils. In this magnetostrictive torque sensor, a width of the magnetostrictive films in the axial direction of the rotating shaft and a width of the sensor coils in the axial direction of the rotating shaft are set so as to fulfill the relationship 1<(W/W)<1.35.