Invention Grant
- Patent Title: Method to reduce oil shear drag in airgap
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Application No.: US16570217Application Date: 2019-09-13
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Publication No.: US11387712B2Publication Date: 2022-07-12
- Inventor: Derek F. Lahr , Farzad Samie , Alireza Fatemi
- Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
- Applicant Address: US MI Detroit
- Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
- Current Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
- Current Assignee Address: US MI Detroit
- Agency: Quinn IP Law
- Main IPC: H02K9/26
- IPC: H02K9/26 ; H02K7/00 ; H02K9/19 ; B60K1/00
Abstract:
An electric motor includes a stator, a rotor, a rotor shaft and a pump. The rotor is disposed within the stator and separated from the stator by an airgap. The airgap inadvertently accumulates a fluid. The rotor shaft is connected to the rotor. The pump is configured to move the fluid out of the airgap.
Public/Granted literature
- US20210083555A1 METHOD TO REDUCE OIL SHEAR DRAG IN AIRGAP Public/Granted day:2021-03-18
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