Tonpilz type piezoelectric transducer capable of operating alternately as wideband receiver and emitter
US4811307A · kind A · utility
10Cited by
10References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 12, 1986 |
| Grant date | Mar 7, 1989 |
| Priority date | — |
| Expiry date | May 12, 2006 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB06B1/0618
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A Tonpilz type piezoelectric transducer which can be used alternately as a wide-band receiver and an emitter includes a stack of pairs of piezoelectric segments separated by electrodes, the stack being placed between a horn and a countermass. An emitter is connected by a conductor to one of the two electrodes for each segment pair. One pair of segments next to the countermass is separated from the others by an insulator. The two electrodes to either side of the one pair are connected in parallel to a receiver and, through two diodes connected in opposition, to a grounded common conductor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.