Systems and methods for oil maintenance in gearboxes for eVTOL aircraft
US12227300B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 28, 2024 |
| Grant date | Feb 18, 2025 |
| Priority date | — |
| Expiry date | Mar 28, 2044 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02K7/006
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An electric propulsion system comprising an electric motor assembly. The electric motor assembly may include a housing having an internal volume, a stator ring disposed about a perimeter of the internal volume, and a rotor positioned within the stator. The electric motor assembly may include a main shaft connected to the rotor via a gear reduction, wherein the main shaft extends through the rotor. The electric motor assembly may include a collar connected to the main shaft, wherein the collar encircles the main shaft, and at least a portion of the collar is configured to direct a fluid away from the main shaft and toward the stator ring.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.