Sun roof drive device
US7453222B2 · kind B2 · utility
2Cited by
3References
8Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Feb 4, 2005 |
| Grant date | Nov 18, 2008 |
| Priority date | — |
| Expiry date | Jun 18, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02P6/16
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The sun roof drive device opens and closes a vehicle sun roof by a DC brushless motor, which is driven by rectangular waves when high torque is required at a low rotational speed and which is driven by sinusoidal waves or pseudo-sinusoidal waves when low noise is required.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.