Receiver with coil wound on a stationary ferromagnetic core
US9888322B2 · kind B2 · utility
0Cited by
76References
9Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 23, 2015 |
| Grant date | Feb 6, 2018 |
| Priority date | — |
| Expiry date | Nov 23, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R2209/041
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A receiver includes an acoustic module and a coil module. The acoustic module includes a first housing, a plurality of magnets, and an armature. The armature is disposed within the first housing and extends between the plurality of magnets. The coil module is coupled to the acoustic module, is physically separate from the acoustic module, and includes a second housing and a coil. The coil disposed within the second housing and does not surround the armature. The coil is excitable by an electrical current representative of acoustic energy and excitation of the coil produces a magnetic flux path which moves the armature.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.