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. 19, 2005
Filed:
May. 20, 2002
Naoki Nakane, Toyota, JP;
Kiyoshi Sugimura, Toyoake, JP;
Shiget Shi Fukaya, Toyota, JP;
Masao Tokunaga, Gamagori, JP;
Kenji Takeda, Okazaki, JP;
Naoki Nakane, Toyota, JP;
Kiyoshi Sugimura, Toyoake, JP;
Shiget shi Fukaya, Toyota, JP;
Masao Tokunaga, Gamagori, JP;
Kenji Takeda, Okazaki, JP;
Nippon Soken, Inc., Nishio, JP;
Denso Corporation, Kariya, JP;
Abstract
A torque sensor has a torsion bar coaxially in alignment with input and output shafts, a ring shaped magnet fixed to an axial end of the input shaft, a pair of magnetic yokes fixed to an axial end of the output shaft, and a magnetic sensor for detecting magnetic flux density generated between the pair of magnetic yokes. Each of the magnetic yokes is provided with claws, which are circumferentially spaced at constant intervals, and whose number is equal to that of each of N and S poles alternately arranged circumferentially in the magnet. Each center of the claws coincides with a boundary between immediately adjacent N and S poles of the magnet, when the torsion bar is not twisted. The magnetic sensor is inserted into an axial gap between the pair of magnetic yokes without contacting the magnetic yokes.