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:
Jan. 29, 2008
Filed:
Apr. 03, 2007
Takuya Uryu, Tokyo, JP;
Kazuhisa Kurita, Tokyo, JP;
Katsunari Takagi, Tokyo, JP;
Teruhiko Moriguchi, Tokyo, JP;
Yoshihiko Onishi, Tokyo, JP;
Takuya Uryu, Tokyo, JP;
Kazuhisa Kurita, Tokyo, JP;
Katsunari Takagi, Tokyo, JP;
Teruhiko Moriguchi, Tokyo, JP;
Yoshihiko Onishi, Tokyo, JP;
Mitsubishi Electric Corporation, Tokyo, JP;
Abstract
A rotation angle detection apparatus is capable of preventing an eddy current and radio wave noise from being transmitted from outside to a yoke and a permanent magnet through a metal plate, and thence to a non-contact sensor through radiation as it is. The apparatus includes a yoke, a permanent magnet that is arranged on an inner wall surface with magnetic flux flowing from its N pole to its S pole through an inner space thereof, a metal plate formed integral with the yoke and the permanent magnet through a resin by insert molding, and a non-contact sensor arranged in the inner space of the permanent magnet. Between the metal plate and the individual end faces of the yoke and the permanent magnet, there is interposed a high impedance member that prevents radio wave noise from flowing from the metal plate to the yoke and the permanent magnet.