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:
Jul. 10, 2001
Filed:
Aug. 11, 2000
Shinichiro Kawano, Osaka, JP;
Hiroyuki Kiriyama, Osaka, JP;
Yukio Honda, Osaka, JP;
Hiroshi Sawada, Osaka, JP;
Noriyoshi Nishiyama, Osaka, JP;
Matsushita Electric Industrial Co., Osaka, JP;
Abstract
This invention pertains to a rotor core (,) in which a plurality of core sheets (,) are laminated on one another on a rotor shaft (,). A plurality of slits (,) and a plurality of strips (,) are alternately arranged in a radial direction of each of the core sheets (,) so as to convexly confront a center of each of the core sheets (,) such that an outer peripheral rim (,) is formed between an outer peripheral edge of each of the core sheets (,) and each of opposite ends of each of the slits (,). A stress concentration portion (,) which is provided at a portion (,) of the outer peripheral rim (,) and has a width (L1) larger than that of the remaining portions of the outer peripheral rim (,).