Recovery of sediments from the bottom of the sea

Details Recovery of sediments from the bottom of the sea Recovery of sediments from the bottom of the sea

1980-10-17

1983-06-07

Crowder, Clifford D.

Excavating

Peat excavators

37 58, 37195, 7386441, 7386443, 175 5, 175 58, E02F 388

Patent

active

043864732

ABSTRACT:
In a method and apparatus for the recovery of sediments from the sea bottom, a suction head having a mouth is lowered into the sediment, raised from the sediment to form a depression, laterally moved to a new location adjacent the first depression, and the cycle is repeated to form a new depression. The suction head includes loosening means in the form of a worm or flukes which exert a low frictional resistance with respect to the sediment during lowering of the suction head and high frictional resistance when the head is being raised from the sediment.

REFERENCES:
patent: 526531 (1894-09-01), Hussey
patent: 618332 (1899-01-01), Cloudman
patent: 2308437 (1943-01-01), Becker
patent: 2643096 (1953-06-01), Bates
patent: 3310952 (1967-03-01), Veder
patent: 3710878 (1973-01-01), Endo et al.
patent: 4076313 (1978-02-01), Sperandeo
patent: 4175342 (1979-11-01), De Koning et al.

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