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公开(公告)号：US10122228B2
公开(公告)日：2018-11-06
申请号：US15047094
申请日：2016-02-18
Applicant: ROLLS-ROYCE plc
Inventor： Ellis F H Chong , Martyn A. Jones , Geraint W. Jewell
Abstract: A sleeve for retaining magnets around a rotor of an electrical machine. The sleeve is cylindrical and hollow, having axial length and having radial thickness between its inner surface and outer surface. The sleeve defines a plurality of axially spaced, circumferentially extending grooves. Each groove has radial depth which is less than the radial thickness of the sleeve.
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