Moulded transducer
US6166998A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 26, 1998 |
| Grant date | Dec 26, 2000 |
| Priority date | — |
| Expiry date | Oct 26, 2018 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49005
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
An electro-acoustic transducer is manufactured by forming a transducer assembly at least one piezoelectric element, electrodes contacting the element, and acoustic loading blocks, and applying successive superposed mouldings of material of differing acoustic properties around said transducer assembly to form the transducer, while maintaining electrical coupling between the transducer assembly and the exterior of the transducer, the mouldings providing at least one acoustic matching layer covering a radiating surface of the transducer assembly, a casing surrounding the remainder of the transducer assembly, at least one layer of acoustic isolating material between the casing and the transducer assembly. The successive layers may either be moulded in situ, or moulded separately and then assembled.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.