Salvage apparatus and method

Details Salvage apparatus and method Salvage apparatus and method

1976-05-27

1978-03-14

Blix, Trygve M.

Ships

Vessel raising and docking

Submerged

B63C 710

Patent

active

040785092

ABSTRACT:
A salvage apparatus which includes a collapsible bag which has a top and a ottom. A relief valve is mounted at the top of the bag for expelling air from the top of the bag, and a relief valve is mounted at the bottom of the bag for expelling water from the bottom of the bag. A fitting is mounted to the bag for introducing gas or water into the bag so that the rates of descent and ascent of the bag can be controlled. A method of recovering a submerged object includes filling the bag with water, attaching the bag to the submerged object, introducing gas into the bag until the object commences to ascend, and venting air from the top of the bag as the bag ascends to control the rate of ascent.

REFERENCES:
patent: 2413313 (1946-12-01), Cook
patent: 2635574 (1953-04-01), Sturtevant
patent: 3500785 (1970-03-01), Strange
patent: 3512493 (1970-05-01), Hallanger
patent: 3710746 (1973-01-01), McDonald

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