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:
Oct. 23, 2012
Filed:
Apr. 25, 2007
Yasuyuki Shibui, Tokyo, JP;
Masahiro Shimizu, Tokyo, JP;
Yasuyuki Shibui, Tokyo, JP;
Masahiro Shimizu, Tokyo, JP;
IHI Corporation, Tokyo, JP;
Abstract
The invention is characterized in that in a motor rotor constituted by a motor shaft (), a permanent magnet () surrounding the motor shaft () around an axis, a pair of end rings () surrounding the motor shaft () around the axis and pinching the permanent magnet () from both sides in an axial direction, and a hollow cylindrical outer sleeve () surrounding the permanent magnet () and a pair of end rings () in a fastening state around the axis, one end portion or both end portions of the outer sleeve () protrudes in the axial direction than an end surface of the end ring (). A rotating balance correction is executed by pruning away a part of the protruding portion.