Electro-acoustic transducer with radiating acoustic seal and stacked magnetic circuit assembly
US9641938B2 · kind B2 · utility
2Cited by
14References
23Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 21, 2015 |
| Grant date | May 2, 2017 |
| Priority date | — |
| Expiry date | May 21, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R2307/201
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An electro-acoustic transducer includes an accordion-type structure that functions as both an acoustic radiation element and an acoustic seal. In one example, the transducer includes parallel, accordion-type structures that attach to a flat, rectangular diaphragm. The diaphragm is connected to a voice coil. The voice coil and an associated frame are positioned between a magnet arrangement. The magnet arrangement includes stacked magnet pairs positioned between pole pieces to focus magnetic flux.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.