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:
Mar. 08, 2016
Filed:
Sep. 03, 2013
Kabushiki Kaisha Yaskawa Denki, Kitakyushu-shi, JP;
Shiro Yoshidomi, Fukuoka, JP;
Ikuma Murokita, Fukuoka, JP;
Yuji Arinaga, Fukuoka, JP;
Yasushi Yoshida, Fukuoka, JP;
Jiro Muraoka, Fukuoka, JP;
Shoji Oyama, Tokyo, JP;
KABUSHIKI KAISHA YASKAWA DENKI, Kitakyushu-Shi, JP;
Abstract
A rotation detector provided in a motor unit according to an embodiment includes a first support and a second support, a pair of magnetic field generator, at least one magnetic field detector, and a first magnetic member and a second magnetic member. The pair of magnetic field generator is provided on the first support in a manner facing the second support, and has opposite polarities. The magnetic field detector is formed by winding a coil around a magnetic element whose magnetized direction changes in the longitudinal direction, and is provided on the second support in such a manner that a longitudinal-direction side of the magnetic element faces the first support. Each of the first magnetic member and the second magnetic member is made of a magnetic material, and covers a longitudinal-direction end of the magnetic field detector facing the first support.