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. 02, 2004
Filed:
Dec. 05, 2001
Toshihito Yanashima, Ota, JP;
Kazuhiko Arai, Nitta-gun, JP;
Masaaki Takezawa, Nitta-gun, JP;
Keijiro Igarashi, Ota, JP;
Eiichi Murata, Isesaki, JP;
Masanori Yamashita, Gunma-gun, JP;
Yoshitomo Nakayama, Ota, JP;
Shigemi Koiso, Ota, JP;
Noboru Onodera, Ora-gun, JP;
Sanyo Electric Co., Ltd., Moriguchi, JP;
Abstract
A synchronous induction motor realizing a great reluctance torque by concentrating a magnetomotive force generated by a rotor provided with a permanent magnet having a two-pole structure, and having a high efficiency. The synchronous induction motor has a stator provided with a stator winding, a rotor rotating within the stator, a cage-type secondary electric conductor provided in a peripheral portion of a rotor yoke portion constituting the rotor, and a permanent magnet inserted into the rotor yoke portion and having a two-pole structure, and the magnetomotive force generated by one pole of the rotor is set to a value equal to or less than 10% of a peak value in a predetermined range near an electrical angle of 0 degrees or 180 degrees.