Device for emitting acoustic waves in a liquid medium

Details Device for emitting acoustic waves in a liquid medium Device for emitting acoustic waves in a liquid medium

1978-05-09

1980-05-20

Hershkovitz, Abraham

Acoustics

Geophysical or subsurface exploration

Seismic wave generation

92 85B, 92129, 251 63, 251 634, G01V 104, F16J 110

Patent

active

042035015

ABSTRACT:
This device comprises two movable elements of rigid material tightly interconnected by means of a deformable membrane forming therewith a tight internal enclosure, means for varying abruptly the volume of said enclosure by successively moving the two elements away from each other, maintaining them in spaced relationship and allowing them to be urged toward each other by the effect of the external hydrostatic pressure, in which the means for moving the two elements away from each other includes two cylinders and at least one piston slidable in one of said cylinders, associated to one of said movable elements and also to a push-member slidable in one of the cylinders and bearing on the other movable element and means for feeding said cylinder with pressurized fluid so as to maintain the elements in spaced relationship or to release them.

REFERENCES:
patent: 1874135 (1932-08-01), Spoor
patent: 2755774 (1956-07-01), Floyd
patent: 3002354 (1961-10-01), Dorkins
patent: 3379273 (1968-04-01), Chelminski
patent: 3532182 (1970-10-01), Bouyoulos
patent: 3557550 (1971-01-01), Legarra
patent: 3564492 (1971-02-01), Magneville
patent: 3792425 (1974-02-01), Magneville

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