Multiple receivers with a common spout
US8098854B2 · kind B2 · utility
91Cited by
1References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 28, 2007 |
| Grant date | Jan 17, 2012 |
| Priority date | — |
| Expiry date | Nov 16, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R25/00
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A speaker module for a personal communication device includes two transducers for generating sound on the basis of an electrical signal. One transducer outputs sound to the surroundings from a sound output thereof and the other transducer outputs sound to the surroundings via the first transducer. In this manner, two transducers require only one sound output. The sound from the second transducer may be transmitted through and filtered by an opening in a diaphragm of the first transducer. Filtering elements may be provided between the two transducers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.