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.


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    Title :

    Device for Generating Acoustic Signal Statement of Government Interest


    Contributors:

    Publication date :

    1992


    Size :

    21 pages


    Type of media :

    Report


    Type of material :

    No indication


    Language :

    English




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