Core cap for loudspeaker
US7400740B2 · kind B2 · utility
0Cited by
3References
28Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 14, 2005 |
| Grant date | Jul 15, 2008 |
| Priority date | — |
| Expiry date | Nov 18, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R9/025
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A core cap or top plate for use with loudspeakers that includes offset adhesive control grooves on the opposite faces of the disk-like core cap is disclosed. The grooves are offset from one another by a distance that makes the smallest dimension between any feature of the grooves about the same as the nominal thickness of the core cap. The core cap increases the magnetic flux capacity over prior art core cap designs, while maintaining features advantageous to error-proof the orientation of the core cap in the loudspeaker.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.