Speaker
US11470425B2 · kind B2 · utility
0Cited by
0References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 13, 2018 |
| Grant date | Oct 11, 2022 |
| Priority date | — |
| Expiry date | Oct 14, 2038 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R2307/025
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
The present disclosure provides a speaker, comprising a vibration system including a speaker diaphragm and a magnetic circuit system cooperating with the vibration system. The speaker diaphragm comprises a thermoplastic polyester elastomer membrane and has a vibration amplitude of 0.25-1 mm, and the speaker has F0 of 150-1500 Hz. The speaker has the characteristic of good listening effect.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.