Speaker
US11457315B2 · kind B2 · utility
0Cited by
1References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 4, 2021 |
| Grant date | Sep 27, 2022 |
| Priority date | — |
| Expiry date | Aug 4, 2041 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R2400/11
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A speaker includes a basket; a diaphragm, supported on the basket through a surround; and a voice coil, including a cup-shaped support connected to the basket through a damper. An upper periphery of the cup-shaped support includes protrusion portions in contact with a lower surface of the diaphragm and grooves spaced apart from the diaphragm. The grooves extend in radial directions of the cup-shaped support to form air passages.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.