Acoustic valve and ear plug for hearing protection
US11273076B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 16, 2015 |
| Grant date | Mar 15, 2022 |
| Priority date | — |
| Expiry date | Aug 29, 2036 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61F11/085
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
The present disclosure concerns an acoustic valve (10) for hearing protection. The valve (10) comprises a housing (1) that is placeable or integrated in an ear plug (100). The housing (1) comprises a sound passage (2) extending through the housing (1) for allowing at least partial transmission of sound from the external surroundings (11) into the auditory canal (13). The housing comprises an impulse filter (3) comprising a rigid plate (4). The rigid plate (4) forms an enclosed volume (12) within the sound passage (2) of the valve. The rigid plate (4) comprises at least one perforation (5) for passing part of the sound from the external surroundings (11) via the perforation (5) into the enclosed volume (12). The housing further comprises an acoustic filter (6) comprising a mesh (7) arranged in the sound passage (2) between the rigid plate (4) and the auditory canal (13).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.