Process and transducer for emitting wide band and low frequency acoustic waves in unlimited immersion depths
US5579287A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 30, 1995 |
| Grant date | Nov 26, 1996 |
| Priority date | — |
| Expiry date | May 30, 2015 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB06B1/0618
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The present invention relates to a process and transducer for emitting wide and and low frequency acoustic waves in unlimited immersion depth. The invention is applied to tranducers comprising at least one electro-acoustic motor (1) causing any wall 3 of the said waves to vibrate, and a hollow shell 5 enclosing the said motor 1, and delimiting with the said vibrating wall 3 among others, a cavity 7, characterised in that: PA1 at least one opening 5, causing cavity 7 to communicate with ambient medium 4, is made in said shell 5; PA1 in at least part of the volume of the said cavity 7, at least one flexible bladder 7, is installed; PA1 this bladder 8 is filled with a fluid 9 more compressible than fluid 4.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.