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:
Dec. 07, 2010
Filed:
Sep. 04, 2007
Akira Nagai, Kitakyushu, JP;
Iwao Myojin, Kitakyushu, JP;
Akira Nagai, Kitakyushu, JP;
Iwao Myojin, Kitakyushu, JP;
Mitsui High-Tec, Inc., Kitakyushu-shi, JP;
Abstract
A laminated core () and a method for manufacturing the same, the laminated core () formed with a plurality of continuous segment core sheets () wound and laminated in a spiral form while connecting portions () mutually connecting the adjacent segment core sheets () are bent and side edges of the adjacent segment core sheets () are fitted with each other, the connecting portions () being located in an outer peripheral portion () of the laminated core (), the laminated core () comprising: a concave cutout () provided at a radially outward side of the connecting portion (), the concave cutout () allowing a radial bulge () to be accommodated within an outer circle of the laminated core (), the radial bulge () formed at a radially outward side of the connecting portion () by bending the connecting portion (); and an inward cutout () provided at a radially inward side of the connecting portion (), the inward cutout () defining a bending position of the connecting portion (), wherein the connecting portion () has a narrow radial width and, before being bent, has a radial width in the range of 0.5 to 5 times a thickness of the segment core sheet (). The laminated core () and the method for manufacturing the same are capable of producing a highly-efficient and high-quality product that is free from effects of the swell in the thickness direction of the connecting portion ().