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. 09, 2025
Filed:
Oct. 31, 2022
GM Global Technology Operations Llc, Detroit, MI (US);
Anthony Michael Coppola, Rochester Hills, MI (US);
Derek Frei Lahr, Ann Arbor, MI (US);
Alireza Fatemi, Canton, MI (US);
Alan G. Holmes, Clarkston, MI (US);
Michael B. Viola, Macomb Township, MI (US);
Bradley Allen Newcomb, Troy, MI (US);
GM GLOBAL TECHNOLOGY OPERATIONS LLC, Detroit, MI (US);
Abstract
A rotor for an electric machine includes a magnetic core configured for arrangement on a shaft. An end ring is arranged on opposite axial ends of the magnetic core. A composite sleeve includes an annular body including an inner surface and an outer surface, and a polymer matrix encapsulating circumferentially oriented fibers. The composite sleeve includes a first tapered portion on the inner surface arranged adjacent to an axial end thereof and configured to facilitate press-fitting of the composite sleeve onto the rotor.