Passive non-linear acoustic filters
US12186156B2 · kind B2 · utility
0Cited by
3References
2Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 13, 2021 |
| Grant date | Jan 7, 2025 |
| Priority date | — |
| Expiry date | Nov 22, 2041 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61F11/085
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
Earplugs that have enhanced performance in protecting the user from high noise levels without impeding auditory awareness are described. The earplugs comprise a housing and a non-linear acoustic filter, wherein the non-linear acoustic filter can comprise a bulb. The earplugs are designed to be compatible with other types of headwear, e.g., headphones and helmets.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.