Process for producing an aural communications receiving device
US4091067A · kind A · utility
17Cited by
7References
2Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 25, 1973 |
| Grant date | May 23, 1978 |
| Priority date | — |
| Expiry date | Jul 25, 1993 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R25/659
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A process for making an aural communications receiving device of formed-in-place elastomeric composition constructed especially to provide a smooth, tight seal over the mouth of the ear canal when stretched and including a formed-in-place sound transmitting passageway acoustically coupled to an integral connecting means for securing a communications component or to an embedded speaker at an outwardly presented surface.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.