Speaker apparatus and waterproof cover therefor
US6128394A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | Oct 22, 1998 |
| Grant date | Oct 3, 2000 |
| Priority date | — |
| Expiry date | Oct 22, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R2499/13
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
In order to reduce the possibility of moisture, which has seeped into a door from its lower side, contacting with a speaker and also of air pressure building up behind the speaker and hindering the movement of the diaphragm, a waterproof cover 3 is provided which includes a magnet cover 31 which follows the circumference of a magnet 16, a frame cover 32 which partially overlaps with the magnet cover 31 and follows the circumference of the frame 15 when it is combined with a speaker 2, a first aperture 33 placed between the magnet 16 and the magnet cover 31 and a second aperture 34 placed between the magnet cover 31 and the frame cover 32.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.