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. 23, 2010
Filed:
Feb. 28, 2007
Yuichi Yoshikawa, Osaka, JP;
Kiyomi Kawamura, Osaka, JP;
Hiroshi Murakami, Osaka, JP;
Hideharu Hiwaki, Osaka, JP;
Yasushi Kamada, Fukui, JP;
Hiroki Sato, Fukui, JP;
Yuichi Yoshikawa, Osaka, JP;
Kiyomi Kawamura, Osaka, JP;
Hiroshi Murakami, Osaka, JP;
Hideharu Hiwaki, Osaka, JP;
Yasushi Kamada, Fukui, JP;
Hiroki Sato, Fukui, JP;
Panasonic Corporation, Osaka, JP;
Abstract
A motor includes a stator formed of a stator iron-core having salient pole iron-cores and windings, and a rotor having a rotor iron-core in which permanent magnets are buried. A magnetic pole centerline connecting a rotary center of the rotor to a magnetic pole center crosses an external shape of the rotor iron-core at end point X, and the magnetic-pole boundary line connecting the rotary center to a magnetic pole boundary point crosses the external shape of the rotor iron-core at end point Z. A straight line angled at a given angle θa from the magnetic pole centerline has end point A. Then a sectional view of the rotor iron-core shows an arc drawn between the end points X and A, and the arc's center is the rotary center. The end points A and Z are connected by one or more than one straight lines in series.