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:
Jun. 01, 2010
Filed:
Apr. 12, 2007
Shogo Okamoto, Chiyoda-ku, JP;
Hiroya Ikuta, Chiyoda-ku, JP;
Yoshihiro Harada, Chiyoda-ku, JP;
Naohiko Harada, Chiyoda-ku, JP;
Kensaku Kuroki, Chiyoda-ku, JP;
Shogo Okamoto, Chiyoda-ku, JP;
Hiroya Ikuta, Chiyoda-ku, JP;
Yoshihiro Harada, Chiyoda-ku, JP;
Naohiko Harada, Chiyoda-ku, JP;
Kensaku Kuroki, Chiyoda-ku, JP;
Mitsubishi Electric Corporation, Tokyo, JP;
Abstract
The stator core is configured into a cylindrical shape by abutting a laminated core that is obtained by bending and forming a rectangular parallelepiped lamination and integrating the stator core by welding. The lamination is configured by laminating a predetermined number of thin strip-shaped magnetic plates that are formed so as to have a flat rectangular shape, and in addition at least two thin sheet coupling weld portions that integrate the predetermined number of thin strip-shaped magnetic plates by welding are formed so as to extend from a first end to a second end in a direction of lamination on an outer wall surface of the lamination and so as to have a predetermined spacing in a longitudinal direction of the lamination. The stator core is formed such that an axial length A at the thin sheet coupling weld portions and a maximum axial length B between the thin sheet coupling weld portions satisfy an expression:mm≦B·A≦mm.