Variable angle stepper motor
US4973866A · kind A · utility
17Cited by
2References
8Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 26, 1989 |
| Grant date | Nov 27, 1990 |
| Priority date | — |
| Expiry date | Sep 26, 2009 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02K37/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A stepper motor having a permanent magnet rotor rotatably mounted within the annuli of a stator winding and a bias magnet. When the stator winding is not energized, the rotor assumes a home position established by the bias magnet. When the stator winding is energized, the rotor is rotated away from the home position by an angular displacement determined by the winding current.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.