Composite sonar transducer for operation as a low frequency underwater acoustic source
US4878207A · kind A · utility
6Cited by
12References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 7, 1988 |
| Grant date | Oct 31, 1989 |
| Priority date | — |
| Expiry date | Sep 7, 2008 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB06B1/0622
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A low frequency sonar transducer comprising a head (1) having first and second stacks of piezo ceramic elements (2,3) in two spaced apart planes between common nodal end supports (7,8), the stacks being oppositely polarized to act in push-pull action with one stack expanding and the other contracting to cause the head (1) to bow. The transducer is prestressed with fibres (6) to prevent fracture.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.