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| Number | Title | Issue Date |
| 7410220 | Apparatus for assembling a liner An apparatus for assembling a liner from a plurality of longitudinal sections of flexible material having longitudinal edges adapted to be joined one to another to form the liner includes a path means along which the longitudinal sections of flexible material can be... | 08/12/2008 |
| 7334358 | Portable dredging equipment A portable dredging apparatus comprising a cutter housing in communication with a hydraulic power supply and a discharge pump through lengths of tubing whereby said cutter housing is submersible. The cutter housing is comprised of a platform having walls depending t... | 02/26/2008 |
| 7318627 | Recovery head with track seal An apparatus for assembling a liner from a plurality of longitudinal sections of flexible material having longitudinal edges adapted to be joined one to another to form the liner includes a path means along which the longitudinal sections of flexible material can be... | 01/15/2008 |
| 7186584 | Integrated circuit chip, electronic device and method of manufacturing the same, and electronic instrument First and second electrodes and first and second electrical connection portions are overlapped and electrically connected. A first substrate includes: an attachment portion, a connection portion and an extension portion, the attachment portion being attached to the ... | 03/06/2007 |
| 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 |
| 6957506 | Offshore treasure recovery apparatus Provided herein is a device useful for recovering valuable metallic objects which are located in a submerged location, such as beneath the sand or mud off the shore of a beach or riverbank. A device according to the invention first locates a metallic object using a ... | 10/25/2005 |
| 6917104 | Integrated circuit chip, electronic device and method of manufacturing the same, and electronic instrument First and second electrodes and first and second electrical connection portions are overlapped and electrically connected. A first substrate includes: an attachment portion, a connection portion and an extension portion, the attachment portion being attached to the ... | 07/12/2005 |
| 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 |
| 6364119 | Screening device and apparatus including same A screening device including a screen having a first side for presentation to material to be screened and a second side, a plurality of screen openings in the screen extending between the first and second side thereof, a plurality of tines mounted on a su... | 04/02/2002 |
| 6299256 | Method and apparatus for recovering a gas from a gas hydrate located on the ocean floor A method and apparatus for recovering a gas from a gas hydrate on the ocean floor includes a flexible cover, a plurality of steerable base members secured to the cover, and a steerable mining module. A suitable source for inflating the cover over the gas ... | 10/09/2001 |
| 6209965 | Marine clathrate mining and sediment separation A method and apparatus for mining of hydrocarbons from a hydrocarbon-containing clathrate such as is found on the ocean floor. The hydrocarbon containing clathrate is disaggregated from sediment by first disrupting clathrate-containing strata using contin... | 04/03/2001 |
| 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 |
| 6126016 | Screening device and apparatus including same A screening device including a screen includes a first side for presentation to a body of material to be screened and a second side. A plurality of elongate screen openings are formed in the screen extending between the first and second sides thereof. A p... | 10/03/2000 |
| 6100600 | Maritime power plant system with processes for producing, storing and consuming regenerative energy A maritime power plant system for producing, storing and consuming regenerative energy has a support structure on which energy producing devices for producing a continuous supply of energy by at least two different methods from regenerative energy sources... | 08/08/2000 |
| 6003952 | Underwater mining machine An underwater mining machine includes a chassis mounted on a powered drive arrangement for driving the chassis on an underwater surface, the chassis having a front end and a rear end and being adapted to be manoeuvrable and driven in at least a forward di... | 12/21/1999 |
| 5544983 | Method of transferring material from the bottom of a body of water A method of transferring material from the bottom of a body of water provides a first tank submerged at a predetermined depth above the bottom. A material source is provided at the bottom subject to ambient water pressure, and is fluidly connected with th... | 08/13/1996 |
| 5431483 | Submarine solution mining containment and regulation cover and method Oceanographic mining uses a flexible cover draped over a submarine ore-bearing stratum. The cover serves as a blanket-like structure for application of a leaching substance and isolation of the leachate and stratum from the surrounding water. The leachate... | 07/11/1995 |
| 5328250 | Self-propelled undersea nodule mining system A self-propelled machine has an internal chamber having a conveyor mechanism extending through an opening in a wall. A buoyancy control allows admission of pressurized air into the chamber to allow adjustment of the buoyancy of the machine. A series of co... | 07/12/1994 |
| 5259130 | Floating grab installation for the recovery of sand and gravel A floating grab installation for recovery of sand and gravel is disclosed. The installation includes a catamaran-type float or pontoon having a gripper and gripper support thereon. The gripper transfers the sand and gravel to an underwater tank having an ... | 11/09/1993 |
| 5076702 | Installation for extracting granular material in a predetermined composition, method using that installation, a mixing unit, and means of measuring the water content of granular material A floating vessel which can move about a sand pit mounts apparatus for garing granular material at the bottom of the sand pit, for processing the granular material into a mixture of a desired granular composition, and for delivery to a barge which can tr... | 12/31/1991 |
| 5072991 | Floating grab dredge and unloading method therefor A floating grab dredge has first and second pontoons spaced apart sufficiently to define a work space therebetween. The work space is large enough to define a barge slip therein as well as a digging well adjacent to the barge slip. A gantry mounted on the... | 12/17/1991 |
| 4937956 | Ocean floor dredging A system of ocean floor dredging comprises a first vessel, two rotatable rollers on the vessel, a third roller lying on the ocean floor, and an endless net extending around the three rollers.... | 07/03/1990 |
| 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 |
| 4878711 | Method and apparatus for mining of ocean floors Suboceanic particulate solids containing useful metal values are recovered from ocean floors by extending a recovery tube from above an ocean surface to the ocean floor and confining a column of sea water therein, injecting a pressurized gas into the base... | 11/07/1989 |
| 4826251 | Dredging apparatus A dredging platform has a water pump that creates suction in a hose for drawing loose materials from the bottom of a stream into the hose for transport to a sluice and vibratory screen. Larger stones are dropped off the end of the screen while finer sand ... | 05/02/1989 |
| 4822106 | Golf ball dredge A golf ball dredge which comprises a shallow draft, buoyant support vessel in the form of a pontoon boat that provides a floating platform from which the dredging apparatus is supported. The pontoon boat has a small outboard motor mounted at its bow for p... | 04/18/1989 |
| 4685742 | Equipment for extracting ores from sea beds Apparatus for extracting ores from the sea bed, comprising a surface ship (1) supplying the power required for the operation of the under-water assembly and for storing the ore, a relay unit (30) connected to the ship (1) by a conduit (3, 4) for raising t... | 08/11/1987 |
| 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 |
| 4533526 | Process for recovering polymetal compounds discharged from a submarine hydrothermal source and devices for carrying out the same A process and device for recovering polymetal compounds discharge from a submarine hydrothermal source comprises the use of a device comprising a bell-shaped collector member provided with a flexible skirt and placed just above the hydrothermal source to ... | 08/06/1985 |
| 4501446 | Removal of fine-grained sediments from water bodies A method for removing fine-grained sediments from flowing or standing bodies of water. The sediment is dredged from the bottom of the body of water. The dredged sediment is dewatered and classified in a sieve plant. At least a fine-grained admixture mater... | 02/26/1985 |
| 4497519 | Metal particle recovery at sub-surface locations Apparatus for recovering metallic particles in a sub-surface formation includes first and second ducts that extend downwardly, the first duct discharging water in a pressurized stream to effect differential elevation of particles in a turbulant water zone... | 02/05/1985 |
| 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 |
| 4289355 | Attachment flange for flexible conduit A plate is attachable to a supporting structure such as a wall. Means carried by the plate encircle and hold a flexible conduit passing through the plate and the structure. The conduit is detachably held at adjustably selected positions along the length t... | 09/15/1981 |
| 4264105 | Siphon dredge mining system A dredging system operates entirely by siphon action and includes a completely sealed conduit system having the intake end disposed upstream or at an upper level from the outlet end which is disposed sufficiently below the inlet end to maintain a flow of ... | 04/28/1981 |
| 4216997 | Grab excavator with fixed jib A grab excavator of the kind having a fixed jib, a liftable grab supported by the jib and a chute articulated about a horizontal axis for pivoting between an operative position in which the chute is directed obliquely downwards to receive material release... | 08/12/1980 |
| 4150502 | Method and apparatus for breaking up lumps of stone from a subaqueous soil When breaking up lumps of stone from a subaqueous stony ground, the lumps are loosened by means of at least one chisel inserted into the ground and being moved along the ground surface. In order to break up lumps of stone by low power and to main a predet... | 04/24/1979 |
| 4147454 | Method of and apparatus for construction of pipes for marine use, as for ocean mining and the like The present invention is concerned with methods of and apparatus for constructing cylindrical structures such as large-diameter pipes for the transport of materials in ocean mining and the like, whereby one or more rolls of previously prepared sheet mater... | 04/03/1979 |
| 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 |
| 4094548 | Apparatus for conveying and separating loose material Conveying apparatus for sand, gravel and the like comprises a conveying head at the lower end of a lower pipe portion sealed to and displaceable telescopically relative to an upper pipe portion which is not longitudinally displaceable. An annular interspa... | 06/13/1978 |
| 4053181 | Seabed mining utilizing circulating current based on water level differences Apparatus for extracting mineral resources lying on the bottom of sea into a working ship floating on an ocean utilizing circulating current based on the difference of water levels. A hollow box shaped tank has its bottom opened and sunk liftably into the... | 10/11/1977 |
