Electroacoustic transducer
US5432758A · kind A · utility
21Cited by
6References
7Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 30, 1993 |
| Grant date | Jul 11, 1995 |
| Priority date | — |
| Expiry date | Sep 30, 2013 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R9/00
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An electroacoustic transducer having a diaphragm and a magnetic driving portion respectively housed in a housing wherein the magnetic driving portion vibrates the diaphragm magnetically in response to an electric signal. A base member for closing an opening at the rear side of the housing is formed of a metallic plate. Lead portions are provided by extending both ends of a coil of the magnetic driving portion. Terminal patterns are formed on a surface of the base member with an insulating film between them. The lead portions of the coil of the magnetic drive portion are connected to the terminal patterns.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.