Collapsible salvage drum and method

Details Collapsible salvage drum and method Collapsible salvage drum and method

1981-06-22

1987-04-21

Peters, Jr., Joseph F.

Ships

Vessel raising and docking

Submerged

114 50, B63C 710

Patent

active

046587454

ABSTRACT:
A salvage apparatus is provided which includes a bellows type drum contai. 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 area of each plate substantially encompass the lateral expanded area 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 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.

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patent: 2635574 (1953-04-01), Sturtevant
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patent: 3710746 (1973-01-01), McDonald
patent: 3732837 (1973-05-01), Hogan
patent: 4078509 (1978-03-01), Buecher et al.

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