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:
Jul. 08, 2025
Filed:
Nov. 03, 2023
American Axle & Manufacturing, Inc., Detroit, MI (US);
Jeffrey J. Ronning, Grosse Pointe Farms, MI (US);
James P. Downs, South Lyon, MI (US);
John C. Morgante, Sterling Heights, MI (US);
Peter D. Fischer, Fishers, IN (US);
David Crecelius, Cicero, IN (US);
Zugang Huang, Troy, MI (US);
Paul J. Valente, Berkeley, MI (US);
American Axle & Manufacturing, Inc., Detroit, MI (US);
Abstract
A motor drive system has a rotor assembly that is rotatable about an axis and includes a hollow shaft, a tube, and one or more fin sets. The tube is received in the shaft and defines a first passage. The fin sets are disposed about the tube and are engaged to the shaft. Each fin set defines a plurality of circumferentially spaced apart fins that are coupled to the shaft and the tube. The first passage is configured to discharge fluid communicated therethrough into a return chamber that is formed in the rotor assembly. A plurality of second passages are formed between the shaft and fins and are in fluid communication with the return chamber.