Accession Number : ADD015460
Title : Device for Generating Acoustic Signal Statement of Government Interest.
Descriptive Note : Patent Application, Filed 26 Jun 92,
Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON DC
Personal Author(s) : Sullivan, Edmund J
Report Date : 26 Jun 1992
Pagination or Media Count : 21
Abstract : A device for generating an acoustic signal includes a housing having a cylinder bore and a piston seat therein, an acoustic piston in the cylinder bore, a biasing spring for biasing the piston toward the piston seat, a retaining member for releasably retaining the piston in spaced relation to the piston seat, and a pressure responsive piston for releasing the retaining member in response to a predetermined water pressure. The device is operative by immersing it in a body of water until the water pressure at a predetermined depth causes the pressure responsive piston to release the retaining member, so that the acoustic piston is propelled into engagement with the piston seat to produce an acoustic signal.
Descriptors : *ACOUSTIC SIGNALS, *PATENT APPLICATIONS, ACOUSTICS, BODIES, BORES, DEPTH, HOUSINGS, PISTONS, PRESSURE, RELEASE, RESPONSE, SEATS, SIGNALS, WATER
Subject Categories : Acoustics
Distribution Statement : APPROVED FOR PUBLIC RELEASE