Multipolar step motor
US4155018A · kind A · utility
8Cited by
5References
11Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 24, 1977 |
| Grant date | May 15, 1979 |
| Priority date | — |
| Expiry date | Aug 24, 1997 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02K37/125
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A multipolar step motor having a rotor with N pairs of alternatively positive and negative magnetic poles arranged thereon with a regular angular spacing therebetween. The motor has two polar members defining an air gap within which the rotor is disposed, at least one of the polar members being configured to define N alternations of the distance between the said member and the rotor. The elements defining the said alternations comprise two groups in which the elements are equally spaced by 2.pi./N, the two groups being angularly spaced by an angle of .pi./4N one with respect to the other.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.