Voice coil actuator
US7873180B2 · kind B2 · utility
1Cited by
8References
19Claims
0Family size
Inventors
Key dates
| Filing date | Jul 23, 2009 |
| Grant date | Jan 18, 2011 |
| Priority date | — |
| Expiry date | Jul 23, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R9/06
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Provided herein is a voice-coil motor that includes a magnetic field having at least two displaced regions of higher intensity separated by a region of lesser intensity and a counter-coil disposed within the region of lesser intensity.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.