Electro-acostic transducers
US5268879A · kind A · utility
18Cited by
6References
17Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 3, 1991 |
| Grant date | Dec 7, 1993 |
| Priority date | — |
| Expiry date | Dec 3, 2011 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10K9/121
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A flexural transducer includes a hollow tube that is magnetically driven by a coil/magnet assembly. A magnetic field is provided by passing a current through the coil. The filed passes through an air gap between the coil and the magnet to attract and repel the magnet during alternating portions of the current's cycle. The magnetic transducer driver mechanism permits high drive capability, high temperature operation and provides lower frequency operation than conventional ceramic drivers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.