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| Number | Title | Issue Date |
| 8171659 | Method and apparatus for selective soil fracturing, soil excavation or soil treatment using supersonic pneumatic nozzle with integral fluidized material injector An apparatus and associated method of soil working is provided for performing one or more of soil fracture, soil excavation and soil treatment. The method comprises the steps of: supplying a source of pressurized gas; supplying a source of fluidized material; positi... | 05/08/2012 |
| 7743537 | Earth reduction tool An earth reduction tool configured to connect to a vacuum source of an earth reduction system for moving material comprising an elongated body defining a first end for connecting to the vacuum source, an opposite second end, and an elongated vacuum passage extending... | 06/29/2010 |
| 7484322 | Digging and backfill apparatus A mobile digging and backfill system for removing and collecting material above a buried utility. The system comprises a mobile chassis, a collection tank mounted to the chassis, a water pump mounted to the chassis for delivering a pressurized liquid flow against th... | 02/03/2009 |
| 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 |
| 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 |
| 7325338 | Engulfment rescue device and method A device and method is provided for rescuing a person trapped in engulfing material at an engulfment site. A reduction tool is used to loosen the engulfing material in order to free or facilitate freeing a buried or partially buried victim. The loosened engulfing ma... | 02/05/2008 |
| 7234252 | Method and apparatus for beneficiating soils during vacuum excavation An apparatus for soil excavation having a vacuum hose, a vacuum holding tank and at least one air lance and/or water jet, in which a soil beneficiating agent is introduced into the soil during one or more of the steps of the vacuum excavation process. ... | 06/26/2007 |
| 7047676 | Rotational and positionable arm-controlled underwater bottom artifact and sample suction recovery apparatus and interchangeable bottom coring apparatus A novel rotational and positionable robotic arm-controlled underwater bottom artifact and sample suction recovery apparatus and interchangeable bottom coring apparatus, wherein the interchange is effected underwater by rotation of a common deploying arm and remote-c... | 05/23/2006 |
| RE38872 | Vacuum excavation apparatus having an improved air lance, air lance nozzle, and vacuum system including a multistage venturi ejector A vacuum excavation system which incorporates a low consumption air lance, a highly efficient multi-stage vacuum generation system effectively isolated from the waste stream and the air source, and a highly portable material collection system. The air lance includes... | 11/15/2005 |
| 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 |
| 6910319 | Hydrojet for cutting plant growth from waterways An apparatus and method for cutting plant growth from waterways to promote fluid passage through such waterway. Water under high pressure is forced through a nozzle orifice to cut, chop and/or pulverize the aquatic plant matter. The nozzle is on a spray-head assembl... | 06/28/2005 |
| 6874261 | Method for treating an underwater bed A method of forming a trench in the bed of a body of water, the bed having an initial undisturbed upper surface, comprises suspending a pressure line from a vessel floating on the body of water, the pressure line terminating downwardly in a downwardly directed nozzl... | 04/05/2005 |
| 6857837 | Utility pole installation system A utility pole installation system, comprising a hydrovac unit having a chassis and a utility pole positioner mounted on the chassis. The hydrovac unit has an internal combustion engine mounted on the chassis, and a hydrovac boom mounted on the chassis. A hydraulic ... | 02/22/2005 |
| 6817119 | Apparatus and methods for subsidence deepening This invention relates to apparatuses and methods for subsurface mining, and more particularly to apparatuses and methods for relocating (including dredging, mining, filling, reverse-layering, replenishment) subsurface strata. ... | 11/16/2004 |
| 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 |
| 6705029 | Trenching machine An apparatus for forming a trench in a seabed for burying a line generally consisting of a main frame, at least one buoyancy tank mounted on the main frame, a pair of endless track assemblies, each engageable in gripping relation with a side of the line for propelli... | 03/16/2004 |
| 6691436 | Hand-held device for exposing buried objects A hand-held wand is disclosed for exposing buried objects such as utility lines or the like. The wand comprises an elongated, hollow tube having upper and lower ends with first and second water supply conduits being positioned adjacent the exterior surfac... | 02/17/2004 |
| 6561115 | Anchor insertion device A hand-held tool for a diver has a hollow tube to vent pressurized gas from an interconnected source through an opening in the tube. The vented pressurized gas aerates material of a seabed, and an anchoring system disposed adjacent to the tube is effortle... | 05/13/2003 |
| 6484422 | Soil-excavating apparatus A soil excavating apparatus for use in combination with a cleaning/vacuuming machine having at least one high pressure fluid supply in the vacuum line. A soil excavating apparatus is disclosed for use in combination with a cleaning/vacuuming machine havin... | 11/26/2002 |
| 6470605 | Earth reduction tool A reduction system using water pressure and vacuum excavation and including a water supply tank, water pump, vacuum pump, slurry collection tank, a system for tilting the collection tank, handheld reduction tool, and a drive system. The reduction tool, or... | 10/29/2002 |
| 6453584 | Continuous vacuum, separator, dispensing system A vacuum boring and mud recovery system comprising a vacuum container, a vacuum producing device to create a vacuum within said container, a conduit to vacuum solid particles and liquids into the vacuum container and a dispensing device to dispense the li... | 09/24/2002 |
| 6449883 | Method and device for dredging underwater ground layers An apparatus and method for dredging under water ground layers includes the steps of providing a dredging device composed of a mechanical dredging component having a part operative to contact the under water ground layers and exert a dredging action; and ... | 09/17/2002 |
| 6430848 | Underwater excavation apparatus An improved underwater excavation apparatus achieves efficiency and control of movement through provision of a hollow body having at least one inlet and at least one outlet, at least one pair of impellers coaxially displaced one from the other and rotatab... | 08/13/2002 |
| 6273512 | Hydrovac excavating blast wand A hydrovac wand is provided with a crossfire nozzle arrangement that reduces thrust to the wand operator, and that has a spray pattern that eliminates spray back. A pair of jets erode a hole while two other jets push the debris back to a suction hose. Two... | 08/14/2001 |
| 6138833 | Placer gold mining method, placer gold mining boat used in this method, placer gold digging and separating method and system therefor, and placer gold separating method and system therefor A placer gold separating method includes subjecting placer gold-and gold ore-containing sand and gravel layers accumulated on the bottom of the water of a river and placer gold- and gold ore-containing sand and gravel layers formed deep in the ground to e... | 10/31/2000 |
| 6116818 | Underwater plow apparatus and method An ocean plow device and accompanying method which incorporate a passive plow blade and a jetter tool working in conjunction with one another to lower drawbar and increase cable deployment speeds. In order to avoid cavitation due to sand dilation, in one ... | 09/12/2000 |
| 6058630 | Fluid seal for maintaining vacuum A suction, or vacuum, is created by the coupling of two sections of tubing of dissimilar size. The larger section of tubing has an open ended reservoir attached to one end thereof. The smaller section of tubing has an end plate attached at a point approxi... | 05/09/2000 |
| 6053663 | Device for creating a local water flow A device for creating a localized water jet within a body of water allows for the displacement of material from the floor of the body of water. The device includes two powered screws within a jet pipe. The screws are arranged coaxially and their direction... | 04/25/2000 |
| 6000151 | Vacuum excavation apparatus having an improved air lance, air lance nozzle, and vacuum system including a multistage venturi ejector A vacuum excavation system which incorporates a low consumption air lance, a highly efficient multi-stage vacuum generation system effectively isolated from the waste stream and the air source, and a highly portable material collection system. The air lan... | 12/14/1999 |
| 5970635 | Jet agitation dredging system A dredging system for removing material from a submerged ground surface includes a dredge head housing having an enclosed, pressurized agitation chamber into which the material to be removed is received from an intake opening. Connected to the housing is ... | 10/26/1999 |
| 5950732 | System and method for hydrate recovery A system for recovering liquid hydrocarbons from hydrates on an ocean floor includes a vessel, a positioning subsystem coupled to the vessel for holding the vessel in a desired location over a hydrate formation, a hydrate recovery subsystem coupled to the... | 09/14/1999 |
| 5944447 | Underwater pipeline entrenching apparatus and method of using the same A system for entrenching an underwater pipeline on a water bottom. The system is comprised of an underwater pipeline positioned on a water bottom; a floating vessel; an elongated tubular entrenching tool having a plurality of tool nozzles; a jetting head ... | 08/31/1999 |
| 5901478 | Portable hand held pneumatic and water power excavator The present invention is a high velocity pneumatic and water device for excavating a work area. The device comprises a "T" shaped tubular body that is connected to an external source of high velocity air and water mix. At the top end of the device exists ... | 05/11/1999 |
| 5887667 | Method and means for drilling an earthen hole An earthen hole drilling device has an elongated tube having first and second ends. A source of vacuum pressure is connected to the first end of the tube. A rotary fluid nozzle is attached to the second end of the tube and is adapted to direct a rotary je... | 03/30/1999 |
| 5659983 | Device for filling in a trench dug in the sea bed in order to cover a pipe laid down in the trench An improved trench-filling device for covering a pipe and filling in a trench dug in a sea bed, characterized in that the device comprises two sets of nozzles (6,7) arranged above and proximate to the sea bed on both sides of the trench (1), the nozzles p... | 08/26/1997 |
| 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 |
| 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 |
| 5546682 | Sediment relocation machine The invention relates to an apparatus for relocating sedimentary materials particularly from the bottom of water channels. The invention utilizes a water jet fluidizer to displace sedimentary materials and to suspend them in a water flow. The water flow c... | 08/20/1996 |
| 5487229 | Apparatus for pneumatic excavation An excavation head, mounted on one end of a telescoping hollow boom, has nozzles for directing jets of high speed air at an excavation face to loosen soil. A vacuum transport pipe extends from the excavation head through the hollow of the boom to a spheri... | 01/30/1996 |
| 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 |
