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:
Nov. 04, 2014
Filed:
Jul. 19, 2012
Tetsuya Hara, Kariya, JP;
Yoshiyuki Kono, Obu, JP;
Toru Shimizu, Nagoya, JP;
Takamitsu Kubota, Chiryu, JP;
Tetsuya Hara, Kariya, JP;
Yoshiyuki Kono, Obu, JP;
Toru Shimizu, Nagoya, JP;
Takamitsu Kubota, Chiryu, JP;
Denso Corporation, Kariya, JP;
Abstract
A permanent magnet is fixed to a stationary portion. A yoke made of magnetic material is provided to a rotating portion. The yoke is tube-shaped to surround the permanent magnet and has a chord portion into which a magnetic flux generated by the permanent magnet preferentially flows. The chord portion is arranged in such a manner as to be close to the permanent magnet. A Hall element is arranged at a specified position of the stationary portion relative to the permanent magnet. The Hall element outputs a signal which corresponds to a density and an angle of a magnetic flux generated between the chord portion and the permanent magnet.