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. 18, 2013
Filed:
Apr. 28, 2010
Kiyohisa Maki, Kitakyushu, JP;
Yusuke Hasuo, Kitakyushu, JP;
Mei Arazoe, Kitakyushu, JP;
Mitsui High-Tec, Inc., Kitakyushu-shi, Fukuoka, JP;
Abstract
A laminated coreimproves material yield and prevents cracks or breakages of core pieces by relaxing stress on connecting portions. A connected core segmentto be the laminated coreincludes: a V-shaped cutoutlocated radially inward from the connecting portion, the cutoutopening in a radially inward direction with an opening angle of 360°/n given that n is a number of core segments; a slitlocated radially outward from the connecting portion, the slitdividing adjacent segment yokeslocated radially outward from the connecting portion; a first through-holehaving a circular arc formed in a radially outward end of the cutoutin contact with the connecting portion; and a second through-holehaving a circular arc formed in a radially inward end of the slitin contact with the connecting portion