Communication headset
US4620068A · kind A · utility
52Cited by
4References
8Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 6, 1984 |
| Grant date | Oct 28, 1986 |
| Priority date | — |
| Expiry date | Jun 6, 2004 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R2420/07
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An earphone for a wireless communication system having a transceiver unit for converting electrical signals to audio signals and coupling the audio signals through the earphone includes a shallow cup that has a communication passage between the exterior and interior with a closure member biased to a first position for sealing the communication passage and having a switch manipulatable to move the closure member from the position position to provide voice communication through the communication passage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.