Acoustic matching material, method of manufacture thereof, and ultrasonic transmitter using acoustic matching material
US6545947B1 · kind B1 · utility
7Cited by
3References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 17, 2001 |
| Grant date | Apr 8, 2003 |
| Priority date | — |
| Expiry date | Oct 17, 2021 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R17/00
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An acoustic matching member 1 is used, when a sound is propagated from a first object to a second object, for matching an acoustic impedance of the first object and an acoustic impedance of the second object. The acoustic matching member 1 includes a plurality of fine pieces 2, and at least one of the plurality of fine pieces 2 is bonded with at least another of the plurality of fine pieces at a contact portion so as to form a gap in the acoustic matching member 1.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.