Accession Number : ADD012830

Title :   Collapsible Salvage Drum and Method.

Descriptive Note : Patent,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s) : Buecher,Roger W

Report Date : 21 Apr 1987

Pagination or Media Count : 8

Abstract : A salvage apparatus is provided which includes a bellows type drum container. The container includes a flexible skirt which is generally tubular with top and bottom ends. The container further includes a pair of rigid plates, one of the plates being sealably mounted to the top of the skirt and the other plate being sealably being mounted to the bottom of the skirt. It is important that the lateral areas of each plate substantially encompass the lateral expanded areas of the respective skirt end. A plurality of controllable valves are provided for selectively opening and closing the passage of fluid. One of these valves is located in the bottom plate for selectively allowing the passage of water into or out of the container and another valve is located through the container and another for selectively introducing pressurized air into the container. A relief valve is also located through the container for relieving air from the container when the inside and outside differential pressure has exceeded a predetermined level. (Author)

Descriptors :   *PATENTS, *COLLAPSIBLE STRUCTURES, *BAGS, BOTTOM, SKIRTS, PLATES, RIGIDITY, RELIEF VALVES, PRESSURE GRADIENTS, COMPRESSED AIR, PRESSURIZATION, BELLOWS, FLEXIBLE MATERIALS, EXPANDABLE STRUCTURES, SCUBA APPARATUS, UNDERWATER OBJECTS, MARINE SALVAGE, AIR SUPPLIES, BUOYANCY, LIFT, PUMPS

Subject Categories : Containers and Packaging
      Hydraulic and Pneumatic Equipment
      Pumps, Filters, Pipes, Tubing, Fittings & Vlvs

Distribution Statement : APPROVED FOR PUBLIC RELEASE