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:
Aug. 10, 2010
Filed:
Jun. 05, 2007
Akeshi Takahashi, Hitachi, JP;
Haruo Koharagi, Hitachi, JP;
Satoshi Kikuchi, Hitachi, JP;
Tomio Yoshikawa, Shimizu, JP;
Baiying Huang, Shimizu, JP;
Akeshi Takahashi, Hitachi, JP;
Haruo Koharagi, Hitachi, JP;
Satoshi Kikuchi, Hitachi, JP;
Tomio Yoshikawa, Shimizu, JP;
Baiying Huang, Shimizu, JP;
Hitachi Appliances, Inc., Tokyo, JP;
Abstract
The inventive self-initiated permanent magnet synchronous motor has a rotor that has two-pole permanent magnets, as well as magnetic substances in a peripheral direction between the magnetic poles of the permanent magnets. The present invention provides a high-efficiency, high-torque permanent magnet synchronous motor with an improved power factor, its rotor, and a compressor using the permanent magnet synchronous motor, without a reduction in the maximum torque and an increase in costs.