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:
Jul. 04, 2006
Filed:
Sep. 26, 2003
Osamu Shimomura, Nishio, JP;
Tsutomu Nakamura, Kariya, JP;
Kenji Tak Da, Okazaki, JP;
Yoshiyuki Kono, Obu, JP;
Takashi Kawashima, Nagoya, JP;
Takashi Hamaoka, Kariya, JP;
Osamu Shimomura, Nishio, JP;
Tsutomu Nakamura, Kariya, JP;
Kenji Tak da, Okazaki, JP;
Yoshiyuki Kono, Obu, JP;
Takashi Kawashima, Nagoya, JP;
Takashi Hamaoka, Kariya, JP;
Nippon Soken, Inc., , JP;
Denso Corporation, , JP;
Abstract
A rotation angle sensing device for detecting a relative rotation angle between a rotor and a stator includes main magnets, fixed in the rotor, and hole ICs, fixed in the stator. The hole ICs detect magnetic flux of the main magnets , and the relative rotation angle therebetween is detected. A supportive magnet is disposed between the hole ICs so as to offset the magnetic flux of the main magnets. Accordingly, a rotation angle in which the magnetic flux density detected in the hole ICs becomes 0 [mT] can be changed by the supportive magnet. Therefore, a 0° position of the rotation angle can be set to the rotation angle in which the magnetic flux density is detected as 0 [mT], and moreover the detectable range of the rotation angle can be enlarged to be more than 90°.