Method of making a magnetic core with tooth having overlapping short and long teeth distal ends
US10958114B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 1, 2019 |
| Grant date | Mar 23, 2021 |
| Priority date | — |
| Expiry date | Oct 1, 2039 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P80/30
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A magnetic core for an electric motor has a ring-shaped yoke, teeth extending outwardly from the yoke, and a tooth tip extending from a distal end of each tooth. The core is formed from curved or coils strip laminations having teeth arranged in tooth groups. Each group has four tooth types arranged sequentially. Each tooth has left and right half tooth tips. The length of the half tooth tips vary according to tooth type. When assembled, first type tooth overlap with third type teeth and second type teeth overlap with fourth type teeth, whereby the opening of the winding slot is narrowed compared to laminations having all identical teeth.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.