Electric motor
US11652390B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 13, 2019 |
| Grant date | May 16, 2023 |
| Priority date | — |
| Expiry date | May 26, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02K2213/06
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A compact electric motor (1) includes a housing (2), a stator (3), a rotor (4) with a rotor winding (5) or permanent magnets located thereon. A thermal protection device protects the electric motor against overheating. A sensor unit (6) is provided as a thermal protection device. The sensor unit (6) includes a temperature sensor (7) for detecting temperature-based measurement values, a radio module (8) with an antenna (8a) for sending sensor signals of temperature-based measurement values or data or information derived therefrom by radio to an external receiving unit (9). The sensor unit (6) has a memory (13) and a microcontroller (10). The sensor unit (6) is a self-supplying assembly.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.