D. C. motor with multi-tooth poles
US4748362A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jul 11, 1986 |
| Grant date | May 31, 1988 |
| Priority date | — |
| Expiry date | Jul 11, 2006 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02K29/06
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A variable reluctance motor fed by D.C. pulses is controlled by a rotation sensor. The motor has at least two phases. The stator is designed as a continuous magnetic circuit with two stator poles per phase. The stator poles for the different phases are arranged in sequence along the periphery of the rotor so that each pole adjoins poles pertaining to another phase, and such that diametrically opposed poles pertain to the same phase, each stator pole having at least two teeth per stator pole. The rotor is provided with teeth that cooperate with the stator teeth. The spaces between adjacent stator poles are shorter than the spaces between the teeth of any one stator pole.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.