Ear protector with a sound damping filter, sound damping filter for such an ear protector as well as method for manufacturing a sound damping filter for such an ear protector
US8689931B2 · kind B2 · utility
1Cited by
16References
17Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 7, 2010 |
| Grant date | Apr 8, 2014 |
| Priority date | — |
| Expiry date | Dec 7, 2030 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61F11/085
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An ear protector (1) with a sound damping filter (3), comprises a membrane (5). The membrane is composed of a material that permits the transmission of air and water vapor with respect to the ear from the into the outside of the ear protector, the membrane is pre stressed mounted in the filter, enabling a bigger surface and hence bigger air and water transport at same sound attenuation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.