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:
Sep. 22, 2026
Filed:
Jul. 26, 2024
GM Global Technology Operations Llc, Detroit, MI (US);
Alireza Fatemi, Canton, MI (US);
Derek Frei Lahr, Ann Arbor, MI (US);
Thomas W. Nehl, Shelby Township, MI (US);
Anthony Michael Coppola, Rochester Hills, MI (US);
GM GLOBAL TECHNOLOGY OPERATIONS LLC, Detroit, MI (US);
Abstract
A magnet rotor assembly includes a rotor core having a rotor core length along a longitudinal axis. A plurality of partially ground magnets are disposed at partially ground magnet locations within the rotor core, have a magnet length extending along the longitudinal axis, a first partially ground magnet end, and a second partially ground magnet end. A deformable end ring is disposed at an end of the rotor core to retain the partially ground magnets within the rotor core. The deformable end ring includes a plurality of deformable areas. Each of the deformable areas corresponds to a partially ground magnet location. A partially ground magnet has an associated magnet length that is greater than the rotor core length and a partially ground magnet end of that partially ground magnet abuts against a first deformable area of the deformable end ring causing a deformation of the first deformable area.