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:
Oct. 21, 2025
Filed:
May. 10, 2023
Applicant:
GM Global Technology Operations Llc, Detroit, MI (US);
Inventors:
Assignee:
GM GLOBAL TECHNOLOGY OPERATIONS LLC, Detroit, MI (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02K 9/19 (2006.01); H02K 1/20 (2006.01); H02K 1/32 (2006.01); H02K 21/14 (2006.01);
U.S. Cl.
CPC ...
H02K 9/19 (2013.01); H02K 1/20 (2013.01); H02K 1/32 (2013.01); H02K 21/14 (2013.01);
Abstract
An electric propulsion motor system includes a rotary electric propulsion motor that has a stator and a rotor. An air gap is present between the stator and rotor. A fluid circulation system provides pressurized liquid and gas, which is directed through fluid passages in the stator and/or rotor and into the air gap to establish a mixture of pressurized liquid and pressurized gas therein. The pressurized gas dilutes the mixture and pushes the pressurized liquid and pressurized gas against the stator and rotor, forcing it to exit the air gap at the opposite ends of the motor leaving the air gap free of accumulated liquid.