Ocean floor surficial dredging apparatus

Details Ocean floor surficial dredging apparatus Ocean floor surficial dredging apparatus

1976-10-27

1978-04-25

Purser, Ernest R.

Mining or in situ disintegration of hard material

With separation of materials

Separation below surface of earth or water

56328R, 734252, E21C 4500

Patent

active

040859738

ABSTRACT:
An ocean floor surficial dredging apparatus is contemplated for retrieving particulate minerals from on and below the ocean floor. Such apparatus comprises first means for providing sufficient downward driving forces for enabling the first means to at least partially penetrate the ocean floor. The apparatus embodies second means operatively connected to the first means and actuable for providing sufficient positive buoyant force for extricating the first means from the seabed and returning it to the ocean surface. Also envisioned, such apparatus includes a third means operatively connected to the first means for permitting passage, therepast, of the particulate minerals whenever downwardly penetrating the seabed and for trapping particulate minerals of predetermined sizes in the first means, whenever, the first means is being extricated from the seabed in response to the actuations of the second means.

REFERENCES:
patent: 2788630 (1957-04-01), Nisbet
patent: 2972851 (1961-02-01), Goehring
patent: 3509772 (1970-05-01), Blair
patent: 3848682 (1974-11-01), Payne

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