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. 03, 2012
Filed:
Apr. 11, 2007
Yoshichika Fukuda, Kanagawa-ken, JP;
Pairoj Patisonticharoen, Kanagawa-ken, JP;
Yuusuke Kikuchi, Kanagawa-ken, JP;
Hiroki Nakagawara, Kangawa-ken, JP;
Yoshichika Fukuda, Kanagawa-ken, JP;
Pairoj Patisonticharoen, Kanagawa-ken, JP;
Yuusuke Kikuchi, Kanagawa-ken, JP;
Hiroki Nakagawara, Kangawa-ken, JP;
Fujitsu General Limited, Kanagawa-ken, JP;
Abstract
A magnet embedded rotor is provided in which permanent magnets are embedded in the iron core of the rotor at a fixed interval. Notch parts are formed at the first protruding part and both the sides of the first protruding parts on the outer face between salient poles in the iron core of the rotor correspond to the multiple permanent magnets. Non-magnetic parts for preventing the short circuit of magnetic flux are formed at both the edges of the permanent magnets. A bridge part between the non-magnetic parts and the notch parts are narrowed as much as possible to an extent to cause a magnetic saturation, and one or multiple of the second protruding part extending to the direction of the outer face are formed at the notch parts.