Piezoelectric transducer supporting and contacting means
US4429247A · kind A · utility
31Cited by
13References
18Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 28, 1982 |
| Grant date | Jan 31, 1984 |
| Priority date | — |
| Expiry date | Jan 28, 2002 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R2499/11
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Nodal contacts for piezoelectric audio transducer comprise an annular surface in a conductive housing member which is attached resiliently to a circuit board. The transducer is clamped resiliently between the annular surface and first and second contacts mounted to the board. The first contact is situated on a semicircular wall which forms a resonant cavity and the second contact is situated on a post in an aperture defined by the wall. An alternative embodiment utilizes a plastic housing member with slots in the top thereof which allow resilience of the annular surface.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.