Marine Mammal Automatic Float Locating and Restraining Device and Method.
DEPARTMENT OF THE NAVY WASHINGTON D C
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The patent relates to a device useful in training marine mammals having an inflatable bladder which, when inflated, increases the hydrodynamic drag and buoyancy of the marine mammal. The device is characterized by having an inactive position having low hydrodynamic drag and negative buoyancy and an activated position which has a relatively high hydrodynamic drag and positive buoyancy. A source of gas under pressure is connected so as to inflate the bladder means upon a predetermined interval of exposure to salt water. The inflation of the bladder is controlled by a water soluble washer which restrains a spring loaded plunger from penetrating the gas filled cartridge.