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| Number | Title | Issue Date |
| 7676966 | Method for removing sediment from open waterways A sediment removal system and method provides a versatile and controllable device for removing sediment from water in a focused manner that avoids generating unwanted turbidity. A suction pump draws water and sediment through a suction conduit and the injection of a... | 03/16/2010 |
| 7526884 | Sediment removal apparatus A sediment removal system and method provides a versatile and controllable device for removing sediment from water in a focused manner that avoids generating unwanted turbidity. A suction pump draws water and sediment through a suction conduit and the injection of a... | 05/05/2009 |
| 7395618 | Subsea excavation and suction device Subsea excavation and suction device includes a suction head with an inlet opening at an outer, free end and an outlet opening connected to a suction hose arranged at a distance from the inlet opening. The suction head is mounted on a hydraulic controller arm and at... | 07/08/2008 |
| 6966132 | Method and device for moving subsea rocks and sediments A method for moving subsea rocks and sediments which can be at significant depths, in connection with removal of protective rocks around installations where maintenance is to be conducted. Tubing with an ejector nozzle is arranged completely externally in relation t... | 11/22/2005 |
| 6748679 | Shellfish dredging apparatus Apparatus for dredging shellfish from the bottom of a body of water includes a source of pressurized water, at least one water jet arranged to receive water from the pressurized water source and direct it at shellfish-containing sediments, sorting plates for receivi... | 06/15/2004 |
| 6517287 | Method for removing contaminants from dredge material in an underwater environment A method of removing contaminated sediment material from a contaminated area on the ocean floor using a reactor vessel wherein seawater is from within the interior of the reactor vessel so that the vessel penetrates the ocean floor. A pressurized fluid is... | 02/11/2003 |
| 6178670 | Underwater mining apparatus There is provided an improved apparatus for recovery of sea-bed material. Known apparatus suffer from problems such as low recovery rate and capital cost. The invention, therefore, provides a recovery apparatus comprising a vehicle upon which are mounted ... | 01/30/2001 |
| 6112439 | Suction dredge A suction dredge for the planned taking up of suction material, particularly for excavating soil from underground pipes, has a pneumatic suction hose for taking up the suction material and at whose lower end is provided a suction stub. At its opposite, up... | 09/05/2000 |
| 5647691 | Method and apparatus for transferring mud and silt A method and apparatus for ecologically safely removing silt, muck, and sand from a waterbottom and for collecting the silt, muck, and sand without destroying the benthos therein into porous containers where the then contained mud and silt can be ecologic... | 07/15/1997 |
| 5617654 | Dredge rotary cutter head A dredge apparatus with an improved cutter includes a hull, a boom extending from the hull, and a cutter element rotatably mounted at the free end of the boom. The cutter element is positioned adjacent a suction line that is supported by the boom. The imp... | 04/08/1997 |
| 5603171 | Process and apparatus for suctioning off the solid material from waterbeds A process for suctioning solid material from a waterbed and for conveying a resulting solids-water suspension into a hopper is provided. A flow of water is supplied to a towed suction basket. The basket has a suction region connected to a suction tube, at... | 02/18/1997 |
| 5531507 | Method of removing a minable product from an underground seam and bottom hole tool An improved method and equipment of removing a minable product, such as coal, from an underground seam of minable product, such as a coal seam, includes the steps of drilling a vertical hole from the earth's surface through the seam of minable product, in... | 07/02/1996 |
| 5428908 | Apparatus and method for subsidence deepening A method of hydraulic dredging employing apparatus and a procedure for subsidence dredging for subsurface removal of sandy strata which results in subsidence, or drop in elevation of the bottom deposits of a body of water, wherein sand is mined laterally ... | 07/04/1995 |
| 5201877 | Suction transporting device A suction transporting device for transporting a material has a suction unit, a transporting line connected with the suction unit and having an inlet for receiving a material to be transported and an outlet for discharging the material to be transported a... | 04/13/1993 |
| 4889391 | Hand-held suction dredge and metal detector A hand-held suction dredge and metal detctor is supported on a vertically held hollow pipe. A metal detector having a central aperture is slidably supported on the pipe with the lower pipe end extending therethrough for receiving and transmitting at least... | 12/26/1989 |
| 4776112 | Sludge pond vehicle A sludge pond vehicle, for use with an onshore waste processor, includes a frame to which a pair of elongate, generally cylindrical pontoons and a trash pump are mounted. Each pontoon has a spiral flight about its outer surface and each is individually dr... | 10/11/1988 |
| 4681372 | Deep sea mining apparatus An undersea mining apparatus including a hydraulically operated ejector pump for submerged use to provide a reduced pressure adjacent the outlet of a lift pipe, to thereby induce flow of mineral nodules from the ocean floor through the pipe. The jet flow ... | 07/21/1987 |
| 4600338 | Mud removal process and apparatus A process and a stationary dredging apparatus for periodically removing marine or river sediment of relatively high density from the bottom of an arm of the sea, a channel or a harbor basin by means of a stationary dredging means consisting of a substanti... | 07/15/1986 |
| 4585274 | Mineral and metal particle recovery apparatus and method Apparatus for recovering metallic particles from a recovery hole formed in a sub-surface formation containing said particles, comprises (a) a barge, (b) a rotating cutter head supported by the barge for controlled bodily movement at the recovery hole and for c... | 04/29/1986 |
| 4398362 | Oceanic seaplow system An oceanic seaplow system comprising a plurality of vessels forming a mini fleet wherein a flexible hose is joined at one end to a suction turbine associated with a mothership and the other end is connected to a suction stud on a seaplow travelling on the... | 08/16/1983 |
| 4373276 | Device for conveying a slurry, such as sand or gravel or the like, lying under water A dredger device for conveying sand or gravel or the like lying under water in which the material enters a conveyor head and is conveyed through a variable length tube into a receptacle on the dredger. In the interior of the variable length tube there is ... | 02/15/1983 |
| 4367989 | Portable gold collection apparatus A portable device for collecting particulate gold bearing material from rock crevices and the like which include a gas engine driven air blower having shoulder straps for mounting on the back of a user, the air blower being connected by a flexible duct to... | 01/11/1983 |
| 4361973 | Bulk material conveying for a pneumatic dredger A pneumatic dredger bulk conveyor of the type wherein a conveyor line is formed by a first circular outer tube and a first inner tube telescopically slidable therein and a pressure line is formed by a second outer tube fixed to the first outer tube and a ... | 12/07/1982 |
| 4340970 | Power wheel Power wheel comprises a heat engine consisting of several expansion valves rigidly situated around the circumference of a stationary side gear and centralized to a axis which rotates through the work out put by expanding a fluid centralized inside a valve... | 07/20/1982 |
| 4316680 | Air-assisted hydraulic re-circulatory bouyancy pump A pump system for being set up to work in deep water, for use in sea bed mining; the system including three pipes, a first of which carries compressed air downward and to a lower portion of a main second or eduction pipe through which mined material is ca... | 02/23/1982 |
| 4292747 | Compressed air dredge A compressed air dredge for removing gravel, sand, mud or the like from the sea floor is provided of the type including a compressor which is installed on a dredging ship having a vertically-disposed feed pipe and which, via a compressed air line, blows c... | 10/06/1981 |
| 4217212 | Method of pumping and processing phosphate slime for land reclamation The invention relates to the broad subject of dewatering phosphate clay wastes and has for its primary object the drainage of existing phosphate slime settling ponds and the reclamation of the drained ponds through the use of the processed slime as a land... | 08/12/1980 |
| 4189253 | Process and apparatus for maintaining a desired depth of a waterway Disclosed is a process and apparatus for maintaining a waterway at a desired depth, the bottom of which is subject to accumulation of sediment such as sand. The process comprises the placement of a plurality of jet pumps on a vertically movable support to... | 02/19/1980 |
| 4140344 | Extraction of organic matter from marine sediment Marine sediment contains organic matter which can be extracted to provide a source of energy, by extracting the organic matter from the marine sediment when in the form of a slurry, and separating the organic matter from the extracted material.... | 02/20/1979 |
| 4114390 | Burying a conduit in the bottom of a body of water The invention relates to a method and apparatus for burying a conduit at the bottom of a body of water.... | 09/19/1978 |
| 4027407 | Jet flow alternator A jet flow alternator for reversing the flow of a confined fluid stream which includes selectively controlled tubes to cause said stream to flow in either one of two directions under pressure.... | 06/07/1977 |
| 4018483 | Process and apparatus for dislodging and conveying material from a surface with a positive pressure fluid stream Disclosed is a process and apparatus for dislodging and conveying material from a surface and into a discharge duct with a positive pressure, high velocity stream of fluid from a jet device wherein the fluid stream is controlled by using wall attachment m... | 04/19/1977 |
| 4009913 | Suction nozzles for dry-fish off loading A suction nozzle which is particularly suitable for handling fish. The nozzle comprises a tubular casing defining a chamber between opposite ends thereof, one of the ends having a first inlet leading into the chamber and the other of the ends forming an o... | 03/01/1977 |
| 3969834 | Airlift An airlift for lifting liquids and pulps, comprising a suction unit for sucking in a mass being transported, an air duct for the supply of compressed air and a mixer for mixing compressed air with the mass being transported. The mixer is in communication,... | 07/20/1976 |
| 3967393 | Underwater solids collecting apparatus The invention concerns an apparatus for collecting solids from the bed of a iquid or for establishing an anchorage in the bed of a liquid. The apparatus comprises essentially a substantially hollow structure into which solids from the liquid bed are induce... | 07/06/1976 |
