Dredge head with mechanical and pumping action
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United States of America Patent
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Jan 19, 1982
Grant Date -
N/A
app pub date -
Oct 30, 1978
filing date -
Oct 30, 1978
priority date (Note) -
Expired
status (Latency Note)
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Abstract
This invention provides dredge means for obtaining ore and other particular material from the ocean floor. The dredge head utilizes a combination of hydrodynamic, pumping, effects plus mechanical dislodging and carrying means. Specifically, the dredge head comprises a powered rotating drum having radially extending tines partially surrounded by a shroud. The shroud diverges from the drum surface, so that it is nearest the drum surface at its forward and lowermost end and farthest from the drum at its rearward and uppermost end. Particles of ore collected by the rotating drum are conveyed to means for carrying the ore to the ocean surface. The hydrodynamic effects of the dredge head include a venturi effect at the inlet, a centrifugal pumping effect and a so-called Magnus effect.
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