Accession Number:

ADD019431

Title:

Depth Sensitive Mechanical Acoustic Signal Generating Device.

Descriptive Note:

Patent application, Filed 17 May 99,

Corporate Author:

DEPARTMENT OF THE NAVY WASHINGTON DC

Report Date:

1999-05-17

Pagination or Media Count:

12.0

Abstract:

A simple, mechanical device is provided which produces an acoustic signal at a specified depth. The device consists of a shear plug in an exterior wall of the device housing which prevents the movement of a spring biased piston. The plug is subjected to increasing differential pressure between the exterior and interior of the housing as the depth of the device beneath the water surface increases. At a known pressure differential, corresponding to a specified depth, the shear plug fails, allowing for the actuation of the piston. The spring biased piston strikes against a ledge in the device, creating the acoustic signal.

Subject Categories:

  • Underwater and Marine Navigation and Guidance
  • Acoustics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE