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. 30, 2025
Filed:
Mar. 04, 2021
Novares France, Clamart, FR;
Cédric Ledieu, Mont Saint Eloi, FR;
NOVARES FRANCE, Clamart, FR;
Abstract
A rotor for an electric motor includes: a rotor shaft rotatably mounted about an axis; a lamination stack coaxially mounted on the rotor shaft, with the lamination stack having first and second internal cavities and permanent magnets are housed inside the first internal cavities of the lamination stack. The rotor further includes a front flange and a rear flange coaxially mounted on the rotor shaft and axially arranged on either side of the lamination stack; wherein at least two of the second internal cavities each house at least one sound absorption element. The at least one sound absorption element is adapted to attenuate the vibrations and/or the mechanical and/or magnetic noises generated by the rotor during its operation within the electric motor.