Transducer for the transformation of electrical modulations into vibratory modulations
US4482788A · kind A · utility
Inventor
Key dates
| Filing date | Oct 19, 1981 |
| Grant date | Nov 13, 1984 |
| Priority date | — |
| Expiry date | Oct 19, 2001 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R23/004
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Transducer for the transformation of electrical modulations into vibratory modulations, comprising a needle-shaped discharge electrode, which is embedded, except in the region of its tip, in an electrode holder of substantially cylindrical form, made of an electrically insulating, and heat-resistant material, and a counter-electrode spaced from the discharge electrode and surrounding the latter. The counter-electrode has substantially the form of a sphere embodied in a perforated, electrically conductive material permeable to sound waves, and has a passage in which electrode holder is fitted. The discharge electrode extends radially into the interior of the spherical counter-electrode up to a point situated in proximity to the center of the sphere. The transducer thus embodied is omnidirectional.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.