Drive system for operating an electric device
US8390236B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 10, 2011 |
| Grant date | Mar 5, 2013 |
| Priority date | — |
| Expiry date | Jun 10, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H2003/266
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A drive system is disclosed for operating an electric device. The drive system includes an electric motor having a permanent magnet rotor connectable to the electric device for controlling the operation of it by a limited-angle rotation, the electric motor further including a stator winding. The drive system includes a drive circuit connected to the stator winding. The permanent magnet rotor can be arranged to be aligned to a magnetic field created by the stator winding when supplied with current from the drive circuit, so that a maximum torque can be applied to the rotor and thereby to the movable part within an interval of ±25 degrees around a middle position between two end positions of the limited-angle rotation of the rotor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.