Speaker front sheet
US5229185A · kind A · utility
5Cited by
5References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 25, 1991 |
| Grant date | Jul 20, 1993 |
| Priority date | — |
| Expiry date | Oct 25, 2011 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/2848
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A speaker front sheet capable of providing a sound outlet structure well matched in finishing with a cabinet of an apparatus equipped with a speaker is disclosed, wherein a plain gauze fabric is bonded on the front surface of a perforated sheet having a porosity greater than 30% and an adhesive layer is applied to the back surface of the perforated sheet.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.