Press-fit sound damping structure
US5864628A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 17, 1996 |
| Grant date | Jan 26, 1999 |
| Priority date | — |
| Expiry date | Jul 17, 2016 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R25/654
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An acoustic attenuator and wax barrier for a hearing aid includes a substantially cylindrical, color coded, housing having a barbed portion for press-fitting the barrier into position. As the channel diameters increase, an associated peak output frequency also increases for the respective housing. The barrier may include one of a plurality of attenuating or damping screens which provides predetermined sound damping characteristics. Alternately, the barrier may include housings having different acoustic channel diameters to provide the different, predetermined audio attenuation or damping characteristics. The barrier is field changeable and is more easily inserted than removed. The barrier may be provided as part of a system which includes a tool for performing field replacement of the barrier.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.