Fluid-insulated universal flexible acoustic coupler muff system
US4314099A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 2, 1979 |
| Grant date | Feb 2, 1982 |
| Priority date | — |
| Expiry date | Nov 2, 1999 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04M1/2155
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A universal acoustic coupler system includes a pair of flexible muffs for acoustically coupling a telephone handset to transducers (speaker/microphone) of an electronic input/output device. The muffs are formed of an external housing inside which an internal housing is positioned, defining a fluid insulator therebetween. The internal housing has a speaker/microphone cavity for receiving the input/output device speaker or microphone which opens into an earpiece/mouthpiece cavity for receiving the earpiece or mouthpiece of a telephone handset. The fluid insulator is formed to completely insulate the speaker or microphone to eliminate all external noise.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.