Broad bandwidth composite transducers
US4485321A · kind A · utility
21Cited by
12References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 29, 1982 |
| Grant date | Nov 27, 1984 |
| Priority date | — |
| Expiry date | Jan 29, 2002 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S73/04
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A broad bandwidth electro-mechanical transducer is shaped into a wedge of varying thickness, with a plurality of PZT elements or sheets embedded in an inactive polymer. The transducer is driven at frequencies corresponding to resonance of the thickness dimensions. The piezoelectric elements with different thicknesses are decoupled mechanically from one another using an inactive polymer of low Q so as to prevent interference.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.