Liquid-immersible electrostatic ultrasonic transducer
US4310906A · kind A · utility
13Cited by
2References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 21, 1979 |
| Grant date | Jan 12, 1982 |
| Priority date | — |
| Expiry date | Dec 21, 1999 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S1/72
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A broadband megahertz range electrostatic acoustic transducer for use in a liquid environment. A liquid-tight enclosure 11 which includes a metallic conducting membrane 18 as part of its outside surface has a means 19 inside the liquid-tight enclosure for applying a tension to the membrane and for mounting an electrode 23 such that the flat end of the electrode is approximately parallel to the membrane. The invention includes structure and a method for ensuring that the membrane 18 and the flat end of the electrode 23 are exactly parallel and a fixed predetermined distance from each other.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.