Composite yoke for bone conduction transducer
US9936301B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 7, 2016 |
| Grant date | Apr 3, 2018 |
| Priority date | — |
| Expiry date | Jun 7, 2036 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R2460/13
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An embodiment discloses the present disclosure includes a transducer having a yoke. The yoke includes a pair of arms. The yoke further includes a layer high permeability steel located between the pair of arms. The yoke also includes a metal coil wrapped around a post located at a central location on the layer of high permeability steel. The apparatus also includes a pair of permanent magnets attached to the single layer high permeability steel, where the permanent magnets each flank the post. The apparatus further includes a pair of springs, each includes a first end and second end, where the first end of each spring is attached to one of the respective arms. Yet further, the apparatus includes a diaphragm coupled to the second end of each spring configured to vibrate in response to a signal supplied to the metal coil.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.