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US3672725A Expired / Lapsed US ⏱️ 0.0 years remaining

Deep sea mining method and apparatus

Assignee: Earl and Wright
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Filing: 1970-06-15
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Granted: 1972-06-27
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Expires: 1990-06-15
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Abstract

Abstract APPARATUS AND METHOD FOR MINING MATERIAL FROM AN OCEAN FLOOR. A MINING VEHICLE TRAVERSES A PREDETERMINED PATH ON THE OCEAN FLOOR WHILE A MOTHER VESSEL ON THE OCEAN SURFACE POSITIONS ITSELF OVER THE MINING VEHICLE. THE MATERIAL IS COLLECTED BY THE VEHICLE ALONG THE PATH OF TRAVEL, CRUSHED, AND CLASSIFIED TO FORM A MIXTURE HAVING A PREDETERMINED SOLID/FLUID RATIO RANGE. THE MIXTURE IS PUMPED TO THE VESSEL THROUGH A FLUID TRANSPORT SYSTEM INCLUDING A FLEXIBLE CONDUIT EXTENDING FROM THE VEHICLE AND DISCHARGING INTO A RELEASABLE CONNECTION WITH THE LOWER END OF A RISER CONDUIT SUSPENDED FROM THE VESSEL. THE RELEASABLE CONNECTION IS ADAPTED TO PROVIDE RE-ENTRY CAPABILITIES TO RE-ESTABLISH FLUID COMMUNICATION IN THE TRANSPORT SYSTEM AND PERMIT THE VEHICLE TO BE EASILY RAISED AND LOWERED FROM THE MOTHER VESSEL.

Inventors

  • 👤 Edward P Johnson

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-27 06:11
CPC Classifications
E; E02; E02F; E02F7/00; E02F3/00; E02F3/04; E02F3/88; E02F3/8858; E02F3/90; E02F3/907; E21; E21C; E21C50/00

Claims Analysis

Total Claims: 0
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References Cited (Backward Citations)

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USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1975-06-27 1975-12-27 1976-06-27 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1979-06-27 1979-12-27 1980-06-27 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1983-06-27 1983-12-27 1984-06-27 $7700.00 Window Closed / Lapsed

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