Invention Grant
- Patent Title: Rotor shaft for an electric machine and electric machine
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Application No.: US16539168Application Date: 2019-08-13
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Publication No.: US11569710B2Publication Date: 2023-01-31
- Inventor: Endre Barti , Julian Blum , Markus Lang , Daniel Loos , Holger Ulbrich
- Applicant: Bayerische Motoren Werke Aktiengesellschaft
- Applicant Address: DE Munich
- Assignee: Bayerische Motoren Werke Aktiengesellschaft
- Current Assignee: Bayerische Motoren Werke Aktiengesellschaft
- Current Assignee Address: DE Munich
- Agency: Crowell & Moring LLP
- Priority: DE102017202356.2 20170214
- Main IPC: H02K7/00
- IPC: H02K7/00 ; H02K9/19 ; H02K5/20

Abstract:
A rotor shaft for an electric machine includes a rotor shaft main body and a rotor shaft core which is arranged therein and which is connected to the rotor shaft main body. The rotor shaft comprises a substantially axially running cooling cavity configured to conduct a cooling fluid, and the rotor shaft core is composed of a different material than the rotor shaft main body.
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