Electric motor shaft including inner helix pattern
US12273011B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 6, 2023 |
| Grant date | Apr 8, 2025 |
| Priority date | — |
| Expiry date | Jul 12, 2043 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02K9/19
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An induction motor rotor shaft assembly may include an induction motor rotor shaft rotatable about a center axis, the induction motor rotor shaft including a hollow cylindrical base including an outer circumferential surface, an inner circumferential surface, a first axial end and a second axial end. The induction motor rotor shaft can include a helical structure extending about the center axis on or in the inner circumferential surface. The induction motor rotor shaft assembly may include a coolant supply for providing coolant inside of the hollow cylindrical base onto the helical structure for flow axially inside the hollow cylindrical base along the helical structure as the induction motor rotor shaft rotates about the center axis.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.