Stator having tooth lamination strips lying between circular cylinders
US4620120A · kind A · utility
Inventor
Key dates
| Filing date | Nov 2, 1984 |
| Grant date | Oct 28, 1986 |
| Priority date | — |
| Expiry date | Nov 2, 2004 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02K17/16
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A stator design for a spherical gap motor having a stator and rotor wherein the lamination strips which make up the teeth of the stator are formed as portions of a cylindrical wall. Each of the lamination strips is concentric about the axis of rotation of the rotor. At the axial end of the lamination strips nearest the rotor pole-shoes are formed as a T-shaped end on the laminations. The ends of the lamination strips are provided with recesses in order to closely position adjacent strips. The recesses are adapted to receive lamination strips of adjacent pole-shoes in order to decrease the approach angle of the lamination to the pole-shoe. The ratio between the area of two adjacent pole-shoes which are exposed to the magnetic flux gap is the same ratio as the cross-sectional area of the respective lamination strips in a plane of rotation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.