Small motor with permanent-magnet rotor
US5502359A · kind A · utility
5Cited by
11References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 24, 1994 |
| Grant date | Mar 26, 1996 |
| Priority date | — |
| Expiry date | Aug 24, 2014 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02K3/18
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A small motor having a two-pole permanent-magnet rotor and a U-shaped laminated stator having a pair of limbs with end portions that form magnetic poles for the rotor. The limbs carry alternately energized exciter coils including three nested winding layers arranged in two winding groups, of which the outer winding layer and the inner winding layer of the first limb and the second limb, respectively, and the central winding layer of the second limb and the first limb, respectively, are connected in series with one another.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.