Acoustic loudspeaker
US8917898B2 · kind B2 · utility
0Cited by
12References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 3, 2011 |
| Grant date | Dec 23, 2014 |
| Priority date | — |
| Expiry date | Jun 22, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R2209/043
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The invention relates to an acoustic loudspeaker which includes a magnetic field source. A mobile apparatus includes a diaphragm and a first winding capable of allowing passage of an electrical current representing the sound signal to be generated and of interacting with the magnetic field. The acoustic loudspeaker includes a second winding, both terminals of which are connected by a resistive component. Both terminals of the second winding are electrically isolated from the terminals of the first winding.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.