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:
Apr. 21, 2025
Filed:
Mar. 08, 2022
American Axle & Manufacturing, Inc., Detroit, MI (US);
Samer Metry, Sterling Heights, MI (US);
Cory J. Padfield, Royal Oak, MI (US);
Jeffrey J. Ronning, Grosse Pointe Farms, MI (US);
Paul Noble, Ypsilanti, MI (US);
Rita Arnold, LaSalle, CA;
AMERICAN AXLE & MANUFACTURING, INC., Detroit, MI (US);
Abstract
An electric drive unit that includes an electric motor having motor output shaft and a heat sink that is received therein. The heat sink is comprises of a plurality of discrete heat sink elements that are stacked together and inserted into the motor output shaft. The heat sink elements have central hubs that cooperate to form a coolant supply passage that extends centrally through the heat sink. Each of the heat sink elements defines a plurality of discrete coolant return passages that are relatively shorter in length than the central hubs so that a void annular space is formed between the coolant return passages of adjacent heat sink elements.