Compact speaker for portable phone
US6895099B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 29, 2001 |
| Grant date | May 17, 2005 |
| Priority date | — |
| Expiry date | Nov 4, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R9/00
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A speaker for a portable phone capable of being assembled without bonding by adhesives is disclosed. The speaker has a protector having a plurality of sound holes, and having an annular tension extension formed at a periphery thereof and extended upwardly and outwardly; a frame having a stepped portion and a cylindrical wall extended upwardly from the periphery of the stepped portion and having locking means; a diaphragm seated on the stepped portion of the frame and intended to generate sound; a voice coil attached to a lower surface of the diaphragm and adapted to vibrate; a top plate disposed in the voice coil; and a magnet fixedly disposed between the top plate and the frame and adapted to generate a predetermined magnetic field.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.