Device for emitting acoustic waves in a liquid medium by implosion
US4294328A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 18, 1979 |
| Grant date | Oct 13, 1981 |
| Priority date | — |
| Expiry date | Sep 18, 1999 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/2544
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The device includes two movable members interconnected at their periphery by a flexible membrane defining therewith a tight enclosure of variable volume, a piston slidable in a cylinder integral with one of the two movable members and hydraulically actuated, to move the members apart from each other, a second cylinder separated in two compartments by an inner valve and controlling the actuation of the piston in response to the pressure of the water feeding said second cylinder, two apertures intermittently freed by the valve for releasing the piston and at least one aperture for the discharge of the water from the tight enclosure to the external water body when the piston release allows the two movable members to be urged toward each other, thereby producing an implosion which generates a strong sonic wave.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.