Magnetic bowl and sounding device
US10659883B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 27, 2018 |
| Grant date | May 19, 2020 |
| Priority date | — |
| Expiry date | Dec 27, 2038 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R2499/11
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The present disclosure provides a magnetic bowl, including: a main body made of a first magnetic material and a reinforcing portion made of a second magnetic material, wherein the reinforcing portion is superposed and fixed on the main body, and the second magnetic material has a higher magnetoconductivity than the first magnetic material. The present disclosure further provides a sounding device using the magnetic bowl. Compared with the related art, the magnetic bowl of the present disclosure has a simple forming process and low production cost, and the sounding device using the magnetic bowl has excellent acoustic performance.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.