Underwater recovery apparatus

Details Underwater recovery apparatus Underwater recovery apparatus

1976-08-20

1978-02-28

Purser, Ernest R.

Mining or in situ disintegration of hard material

With separation of materials

Separation below surface of earth or water

37 54, 114295, E02F 500

Patent

active

040763137

ABSTRACT:
A system for recovery of relatively small items such as treasure located on and beneath the bottom of the sea or other body of water in the form of a head having a shaft with attachment at the upper end for suspension from a ship or the like, compressed-air and oscillatory means for driving the shaft into the sea-bottom and a circular net supported by chains and by ribs radiating from pivots at the lower end and deployed outwardly by upward movement through the bottom material when the shaft is drawn upward on retrieval of the head.

REFERENCES:
patent: 2987836 (1961-06-01), Carlbom
patent: 3113389 (1963-12-01), Vuscovich
patent: 3653355 (1972-04-01), Christians et al.

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