Mining or in situ disintegration of hard material – With separation of materials – Separation below surface of earth or water
Patent
1975-10-28
1977-07-26
Crowder, Clifford D.
Mining or in situ disintegration of hard material
With separation of materials
Separation below surface of earth or water
37 57, 37 66, 37DIG8, E02F 700
Patent
active
040378748
ABSTRACT:
Underwater mining apparatus employs a rotatable drum having a plurality of rows of digging forks and a plurality of adjacent rows of openings for receiving materials loosened by the forks during rotation of the drum over the ocean bottom. The spacing between the forks determines the minimum size of material to be mined and the size of the openings determines the maximum size. A material-receiving trough extends longitudinally along the interior of the drum and communicates with the openings. A longitudinally extending spiral screw rotates with the drum within the trough to concentrate the material and to move the material longitudinally to a pick-up region, from which the material is transported hydraulically.
REFERENCES:
patent: 2722759 (1955-11-01), Cosenza
patent: 3480326 (1969-11-01), Sheary et al.
patent: 3521387 (1970-07-01), Degelman
patent: 3556598 (1971-01-01), Smith
patent: 3697134 (1972-10-01), Murray
patent: 3740098 (1973-06-01), Lachnit
patent: 3905137 (1975-09-01), Gee
Crowder Clifford D.
Nor-Am Resources Technology Incorporated
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