Stepping motor
US6989615B2 · kind B2 · utility
2Cited by
4References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 9, 2004 |
| Grant date | Jan 24, 2006 |
| Priority date | — |
| Expiry date | Jun 13, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02K5/08
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A stepping motor includes a housing, a rotor and a stator received in the housing. The stator includes a yoke, which includes a frame portion surrounding the rotor and a plurality of projections projecting from the frame portion toward the rotor, cylindrical magnetizing coils inserted around the projections, respectively. Each of the magnetizing coils is adapted to receive supply of a pulse current, wherein an inner wall of the housing is formed with concaved portions to receive said magnetizing coils inserted around the respective projections, while being kept spaced from the rotor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.