Accession Number : AD0164045
Title : Adjustable Buoyancy Lift Device.
Descriptive Note : Patent,
Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON D C
Personal Author(s) : Hallanger,Lawrence William
Report Date : 19 MAY 1970
Pagination or Media Count : 5
Abstract : The invention is an adjustable buoyancy device for lifting objects in water. The lift device includes a hollow container which at its bottom end is communicable with the outside water environment. Provision is made to open the container to a gas pressure source so that water within the container can be displaced therefrom and means are provided to open the container to selected water pressures so that the amount of water therein and accordingly the buoyancy thereof can be varied for lifting purposes.
Descriptors : (*PRESSURE VESSELS, *PATENTS), (*UNDERWATER EQUIPMENT, RECOVERY), SALVAGE, FLOTATION, BUOYANCY, LIFT, VALVES
Subject Categories : Marine Engineering
Distribution Statement : APPROVED FOR PUBLIC RELEASE