Fluidborne sound projector
AssigneeThe United States of America as represented by the Secretary of the Navy
InventorsJeffrey S. Goldring, David B. Larrabee, John W. Henry, IV
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Abstract
A fluidborne projector of sound derived from an electro-mechanical noise source translates acoustical energy through a piston subjected to balanced pressures of gas and liquid to enabled dynamic displacement thereof. Such displacement of the piston to a static position is regulated by controlled pressurization of gas, mechanically limited to prevent damage from changing pressures exerted on the piston.
Claims10
In combination with a device for projecting sound into a body of liquid through a piston having opposite axial ends respectively exposed acoustically to the body of liquid and mechanically to a sound generating power source;
- means for respectively exposing said opposite ends of the piston to gas and liquid under balanced pressures;
- chamber means within which displacement is acoustically imparted by the sound generating power source to the piston under said balanced pressures;
- means for venting gas from said chamber means;
- and pressure control means for regulating pressurization of the gas in the chamber means.
In combination with a device for projecting sound into a body of liquid through a piston having opposite axial ends respectively exposed acoustically to the body of liquid and mechanically to a high power acoustical source;
- means for respectively exposing said opposite ends of the piston to gas and liquid under balanced pressures;
- chamber means within which displacement is acoustically imparted to the piston under said balanced pressures;
- and means for preventing damage to the device from changing of the balanced pressures during generation of the sound projected, comprising:
- means for limiting the displacement of the piston within the chamber means;
- means for venting gas from said chamber means;
- and pressure control means for regulating pressurization of the gas in the chamber means.
Dependencies are inferred from the claim text.