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:
May. 29, 2001
Filed:
Jun. 02, 1998
Yasuharu Odachi, Kariya, JP;
Yoshitaka Kouketsu, Kariya, JP;
Katsufumi Tanaka, Kariya, JP;
Yukio Yoshioka, Kariya, JP;
Hiroshi Fukasaku, Kariya, JP;
Kabushiki Kaisha Toyoda Jidoshokki Seisakusho, Kariya, JP;
Abstract
An improved torque sensor for detecting the direction and the magnitude of a torque applied to a shaft. The sensor includes a magnetostrictive layer, a pair of bearings, a stator and two nuts. The sleeve is fixed the circumference of the shaft. The layer has a magnetostriction effect in accordance with torque applied to the shaft. A pair of collars are fixed to the shaft at opposite ends of the layer. The bearings are connected to the shaft. Each bearing contacts one of the collars. The stator accommodates two pairs of coils. Each coil pair includes an exciting coil and a detecting coil. The coils surround and face the magnetostrictive layer. The axial position of the stator is determined by the bearings. Each nut is threaded to a threaded portion fixed to the shaft and presses one of the bearings against the corresponding collar. Accordingly, the axial position of the stator is determined.