Condenser microphone
US6654473B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | May 9, 2001 |
| Grant date | Nov 25, 2003 |
| Priority date | — |
| Expiry date | May 22, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R19/04
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A condenser microphone, and method of construction, is disclosed. The microphone comprises a cup-shaped housing having a base surface and an upstanding peripheral wall. The wall terminates at a distal edge defining an opening. The microphone further comprises a diaphragm and ring assembly disposed on the base surface and having a peripheral edge, a backplate having a peripheral edge, and a spacing washer disposed between the diaphragm and ring assembly and the backplate for separating the diaphragm and ring assembly from the backplate. The microphone also comprises a substrate closing the housing opening. The spacer is disposed between the peripheral housing wall and the peripheral edges of the diaphragm and ring assembly and the backplate. The spacer includes a radially inwardly directed flange which engages an upper peripheral surface of the backplate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.