Earplug
US7783056B2 · kind B2 · utility
26Cited by
5References
17Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 28, 2004 |
| Grant date | Aug 24, 2010 |
| Priority date | — |
| Expiry date | Dec 20, 2026 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61F11/085
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
Earplug comprising a plug member for blocking a man's ear canal, said plug member comprising at least one acoustic channel for channeling incoming acoustic energy to said man's ear. According to the invention, a detector for detecting an acoustic energy level or for detecting a control signal that is indicative for an acoustic energy level to be received, an acoustic valve positioned in said channel, and a control unit that, in response to said detector, controls said valve so as to attenuate the acoustic energy channeled through said acoustic channel.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.