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. 01, 2004
Filed:
Aug. 18, 2003
Emi Takuma, Shizuoka-ken, JP;
Takashi Sato, Shizuoka-ken, JP;
Yazaki Corporation, Tokyo, JP;
Abstract
A second gear rotating at a rotation speed faster than a rotation speed of a first gear while meshing therewith, a magnet provided on the second gear and rotating together therewith, and a small angle detection magnetic sensor disposed in a vicinity of where the second gear is fixed and configured to detect a magnetic line of force of the magnet are provided. Meanwhile, a third gear rotating at a rotation speed slower than the rotation speed of the second gear in synchronization with the first gear, a magnet provided on the third gear and rotating together therewith, and a large angle detection magnetic sensor disposed in a vicinity of where the third gear is fixed and configured to detect a magnetic line of force of the magnet are provided. A rotation angle of a steering shaft is calculated based on angle data detected in the small angle detection magnetic sensor and the large angle detection magnetic sensor.