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:
Sep. 20, 2005
Filed:
Mar. 19, 2003
Kenji Miyata, Hitachinaka, JP;
Masanori Kubota, Hitachinaka, JP;
Kenji Ono, Mito, JP;
Takahiro Shimura, Mito, JP;
Takekazu Ootsuka, Naka-machi, JP;
Hisashi Yukita, Hitachinaka, JP;
Kenji Miyata, Hitachinaka, JP;
Masanori Kubota, Hitachinaka, JP;
Kenji Ono, Mito, JP;
Takahiro Shimura, Mito, JP;
Takekazu Ootsuka, Naka-machi, JP;
Hisashi Yukita, Hitachinaka, JP;
Hitachi, Ltd., Tokyo, JP;
Hitachi Car Engineering Co., Ltd., Hitachinaka, JP;
Abstract
There is provided a compact, noncontact rotary position sensor that accurately detects a rotary position of a rotating object. A magnetism throttling portion is provided in a midway point of a magnetic path. Two magnetic induction elements are disposed adjacently each other at the magnetism throttling portion. This arrangement effectively allows a magnetic flux to converge at the location, at which the magnetic induction elements are mounted. A noncontact rotary position sensor offering high sensitivity and high accuracy can then be obtained. It is also possible to simplify routing of signal lines from the two magnetic induction elements, since the two magnetic induction elements are adjacent to each other.