Electromechanical transducer
US3972018A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Aug 10, 1972 |
| Grant date | Jul 27, 1976 |
| Priority date | — |
| Expiry date | Aug 10, 1992 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB06B1/0655
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
An electromechanical transducer employing an arcuate piezoelectric shell element having lateral edges affixed to a restraining member wherein stresses produced in the element by electrical energy produce element flexural vibrations. The piezoelectric shell element and restraining member are located within a chamber defined by a boot and rigid end caps attached to the restraining member. Hydraulic fluid within the transducer chamber equalizes pressures upon the shell element functioning as an acoustic coupling and as a pressure equalizer. In an embodiment of the invention a pair of piezoelectric shell elements are attached to opposite sides of a planar restraining plate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.