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:
May. 12, 2009
Filed:
May. 25, 2006
Baiying Hang, Shizuoka, JP;
Tomio Yoshikawa, Mishima, JP;
Yasuro Ohishi, Fujieda, JP;
Akeshi Takahashi, Hitachi, JP;
Haruo Koharagi, Hitachi, JP;
Baiying Hang, Shizuoka, JP;
Tomio Yoshikawa, Mishima, JP;
Yasuro Ohishi, Fujieda, JP;
Akeshi Takahashi, Hitachi, JP;
Haruo Koharagi, Hitachi, JP;
Hitachi Appliances, Inc., Tokyo, JP;
Abstract
In a method of manufacturing a self-start synchronous motor for preventing deterioration of permanent magnets used in a rotor, and also for enhancing the efficiency of the self-start synchronous motor, the self-start synchronous motor comprising a stator having a stator core and windings wound around the stator core, and a rotor having an outer diameter slightly smaller than an inner diameter of the stator and arranged inside of the stator. The rotor is provided with a rotor core, a plurality of conductor bars embedded in the outer peripheral portion of the rotor core over an entire periphery thereof, end rings provided on opposite end sides of the conductor bars and constituting a squirrel cage conductor in cooperation with the conductor bars, and a plurality of permanent magnets embedded in the rotor core and arranged at a position inner than that of an inner peripheral surface of the conductor bars. Further, the conductor bars and the end rings are electrically and mechanically joined together through frictional agitation joint.