Damping device for focused piezoelectric transducer
US4608507A · kind A · utility
3Cited by
8References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 29, 1984 |
| Grant date | Aug 26, 1986 |
| Priority date | — |
| Expiry date | Jun 29, 2004 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10K11/002
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
An ultrasonic detection apparatus having a transducer, a lens, and a damping ring, the damping ring being made of a material which is impedance-matched to the lens but which has a lower speed of sound so that stray noise in the lens travels into the damping ring and dissipates rather than remaining in the lens and reflecting back to the transducer as noise.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.