Electret condenser microphone
US7184563B2 · kind B2 · utility
8Cited by
18References
23Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 4, 2003 |
| Grant date | Feb 27, 2007 |
| Priority date | — |
| Expiry date | Jul 7, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R25/00
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A condenser microphone having a housing, a diaphragm assembly and backplate located within the housing. A spacer isolates the diaphragm assembly from the housing and spaces the diaphragm assembly from the backplate. The spacer has a first portion disposed between the backplate and the diaphragm assembly, and a second portion disposed between the diaphragm assembly and the wall of the housing. A conductive member electrically connects the backplate to a ground.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.