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. 15, 2008
Filed:
Jun. 29, 2005
Takashi Kawashima, Nagoya, JP;
Koichiro Matsumoto, Kariya, JP;
Tatsuya Kitanaka, Nagoya, JP;
Takao Ban, Toyohashi, JP;
Kenji Takeda, Okazaki, JP;
Tsutomu Nakamura, Kariya, JP;
Osamu Shimomura, Okazaki, JP;
Takashi Kawashima, Nagoya, JP;
Koichiro Matsumoto, Kariya, JP;
Tatsuya Kitanaka, Nagoya, JP;
Takao Ban, Toyohashi, JP;
Kenji Takeda, Okazaki, JP;
Tsutomu Nakamura, Kariya, JP;
Osamu Shimomura, Okazaki, JP;
Denso Corporation, , JP;
Nippon Soken, Inc., , JP;
Abstract
An improved rotation angle detecting device that detects a rotation angle of a first member relative to a second member is proposed. The rotation angle detecting device includes a magnet unit fixed to the first member and a pair of magnetic sensors fixed to the second member to provide output signals whose phase is different from each other at 90 degrees in angle. The magnet unit includes a pair of disk plates that has the same magnetic poles at the same circumferential positions and is disposed at a prescribed axial distance and a shaft that is made of magnetic material to support the disk plates at the center thereof. The magnetic unit provides a uniform magnetic field in a space around the shaft between the pair of disk plates, and a pair of magnetic sensors is disposed in the space.