High energy ultrasonic transducer
US4439642A · kind A · utility
22Cited by
6References
16Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 28, 1981 |
| Grant date | Mar 27, 1984 |
| Priority date | — |
| Expiry date | Dec 28, 2001 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R19/00
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The energy storage and transmission capabilities of a capacitance-type electroacoustical transducer are increased and the cost of producing such a transducer can be decreased by employing a thin, dielectric coating material between the electrically conductive diaphragm and backplate of said transducer, and by locating the electrically conductive diaphragm support layer on what would otherwise be an exposed outer diaphragm surface to protect same from physical as well as environmental damage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.