Sonic transducer and method for making the same
US4823042A · kind A · utility
20Cited by
3References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 5, 1988 |
| Grant date | Apr 18, 1989 |
| Priority date | — |
| Expiry date | Apr 5, 2008 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10K11/002
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
Sonic transducer and method for making the same. A sonic transducer of the type used in generating ultrasound frequencies for medical therapy includes a substantially planar circular piezoelectric crystal which is bonded to the rear surface of a circular metal diaphragm. The diaphragm front surface includes a substantially planar applicating face and an annular non-parallel surface surrounding the applicating face. The transducer may be excited to produce maximum ultrasound energy over a relatively broad frequency range.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.