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| Number | Title | Issue Date |
| 7690134 | Cutoff device with liquid bag A cutoff device with a liquid bag includes a framed housing that supports a cover having a cutoff wall. The cutoff wall is opened at a lower end thereof with a liquid bag attached along the opened lower end of the cutoff wall. The housing includes telescopic columns... | 04/06/2010 |
| 7350322 | Dewatering system apparatus and method for dredging buckets A dewatering apparatus for removing water from the interior volume of a closed, loaded clamshell dredging bucket. The dewatering system comprises at least one conduit adapted for support from a clamshell type dredging bucket. The conduit has a first end adapted for ... | 04/01/2008 |
| 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 |
| 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 |
| 7311298 | Integrated air compressor and winch An integrated air compressor and winch is provided that utilizes a single source of rotary motive power for driving both a winch drum and compressor mechanism. The integrated air compressor and winch is preferably provided with a gear case that is operable to provid... | 12/25/2007 |
| 7192010 | Rollercoaster launch system A winch system, typically used in a roller coaster system, includes a hydraulic pump, a variable speed motor connected to the hydraulic pump, a first pipe connected to the hydraulic pump; a second pipe connected to the hydraulic pump comprising a second pressurized ... | 03/20/2007 |
| 7143532 | Marine backhoe dredge A marine backhoe dredge having a counterbalancing system that increases the hoisting capacity and hoisting speed of the backhoe. The device includes a backhoe mounted on a vessel and a counterbalancing system that includes an adjustable support structure, one or mor... | 12/05/2006 |
| 7142967 | Features of main control computer for a power machine The present invention is directed to a computer based control system for controlling hydraulic and electromechanical actuators on a power machine, such as a skid steer loader. The computer based control system is configured to implement a number of features to enhan... | 11/28/2006 |
| 7093382 | Power diversion system for a hydraulic dredge A power diversion system for a hydraulic dredge diverts any or all available prime mover power to slurry production. An electronic control module (ECM) on the dredge continuously communicates with the prime mover ECM to determine the current available power of the d... | 08/22/2006 |
| 7089693 | Dredging method and apparatus An improved hydraulic dredging apparatus for removing a sediment layer from an underlying substrate lying below a water surface includes a receptacle having an open-front portion through which is sediment is collected, means for attaching the dredging apparatus to t... | 08/15/2006 |
| 7036295 | Aquatic growth harvester A deck slotted into a left and a right deck halves in spaced apart positions so as to provide a slot therebetween. On each of the deck halves a pair of drums are mounted for rotation. Around each of the pairs of drums a rubber belt is engaged so that the rubber belt... | 05/02/2006 |
| 7036252 | Actuating coupler for heavy machinery peripheral attachments A locking device to hold an asphalt milling machine on a loader bucket to increase stability and accuracy of the milling machine and increase the speed at which the loader bucket can transition between directing the milling machine and picking up ground asphalt.... | 05/02/2006 |
| 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 |
| 6061932 | Steerable underwater plow with movable body member A steerable plow configured for towing in a direction along a seabed comprises a body and a soil cutting member slidingly connected to the body. The soil cutting member defines a cutting vane for cutting a trench in the seabed. The body includes two skids... | 05/16/2000 |
| 5421105 | Dredging system A dredging apparatus for dredging waterways containing sediment includes a hood having a passage for water and sediment to enter the hood under the influence of a submersible dredge pump apparatus. The dredge pump apparatus includes an inlet line having a... | 06/06/1995 |
| 5269635 | Slurry processing unit By utilizing two inlet pumps and one discharge pump, and controlling the speed of the discharge pump, the pressure in a slurry processing unit can be controlled to facilitate measurement and handling of compressible slurry. It has been found that multiple... | 12/14/1993 |
| 5172497 | Slurry density control system A suction dredge for mining solids from a water bottom, includes a floating barge, an elongated tubular suction line extending between the barge and the water bottom, a boom for raising and lowering the elongated tubular suction line, a valve in the elong... | 12/22/1992 |
| 5083386 | Apparatus and method for forming a crater in material beneath a body of water Dredging apparatus comprises a modular, submersible, vertically positionable crater sink mechanism operable to form a crater in a bed of material beneath a body of water. The crater sink mechanism comprises an elongated tubular housing closed at its upper... | 01/28/1992 |
| 4999934 | Dredging apparatus A floating dredge and hydraulic dredging apparatus for mining underwater mineral bearing deposits is disclosed. The dredge includes an overburden excavator and an ore excavator mounted to a pontoon for removing overburden and ore material, respectively. P... | 03/19/1991 |
| 4995175 | Pneumatic extraction head A pneumatic extraction head for underwater debris, in particular sand and gravel, has a joint or connecting pipe extending inside the housing between the base plate and the flange plate and surrounding the debris inlet opening, this connecting pipe formin... | 02/26/1991 |
| 4991321 | Pneumatic device for excavating and removing material A high velocity pneumatic device for excavating and removing material such as soil. The device includes an elongated pressure tube having an inlet end connected to a source of gas, such as air, under pressure and the opposite or distal end is bent and pro... | 02/12/1991 |
| 4926571 | Connection for connecting compressed-air lines A connection for connecting compressed-air lines arranged on the body of a floating dredge leading to measuring devices, control devices or the like, with measuring air lines mounted on a suction pipe of the floating dredge used for suction pipe position ... | 05/22/1990 |
| 4887371 | Dredges A submersible dregde assembly which includes a mobile carriage which locates on and may be driven about the submerged surface of the sea, river or bay under control from the surface and which carries a rotatable bucket wheel for engaging the surface and d... | 12/19/1989 |
| 4804095 | Cutoff device for crane systems The cutoff device is provided for crane systems, especially a dredger to which a grab 1 is attached. Grab 1 has a cable 5 connected to it, which is guided over pulleys 4, 7 and kept under tension with the help of a weight 9. One of the two pulleys 4 is pr... | 02/14/1989 |
| 4797067 | Pumping system with desilting arrangement Pumping system with a desilting arrangement having a bidirectional water pump disposed in a housing which has a pump inlet and a pump outlet. The system also has a silt blow-out pipe with a desilting valve therein, connected at one end to the pump outlet ... | 01/10/1989 |
| 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 |
| 4759138 | Plow steering system A pipeline trenching plough is towed along the seabed by a tow wire (20) connected to a ship or tractor. The course of the plough is changed or maintained by oppositely-acting forces imposed on the wire (20) and on the body (10) of the plough by a hydraul... | 07/26/1988 |
| 4749308 | Self-propelled underwater cable burying machine A self-propelled underwater bed cable burying machine is disclosed, which comprises a bottom running gear body with a high pressure water generator mounted therein and an arm-shaped water jet trenching unit mounted the base end capable of revolution in a ... | 06/07/1988 |
| 4718835 | Mining apparatus and jet pump therefor This disclosure relates to deep sea mining apparatus, comprising a relatively straight lift pipe, the lift pipe being adapted to extend substantially vertically from the floor of a body of water upwardly to a ship on the surface of the water. A plurality ... | 01/12/1988 |
| 4713896 | Inshore submersible amphibious machines A submersible unit comprises a portable, open or closed bottomed pneumatic chamber mounted on flexible drive tracks controlled by personnel from the chamber for operation along the bottom of a body of water, on the surface, at intermediate levels, in the ... | 12/22/1987 |
| 4696149 | Aquatic weed control method and apparatus Unwanted aquatic weeds are removed by first dragging the bottom of a lake with a horizontal bar to loosen the weeds from the bottom. The uprooted and broken weed stalks are permitted to float to the surface of the lake. The weeds are scooped from the wate... | 09/29/1987 |
| 4628623 | Turbidity control system for dredge cutterheads A turbidity control system for dredging operations wherein turbidity adjacent the dredge head is controlled by one or more operating characteristics of the dredging operation. The dredge head includes water jets for agitating, slurrying, loosening the mat... | 12/16/1986 |
| 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 |
| 4542775 | Slurry concentration and dilution apparatus Apparatus for not only removing fluids from a slurry system but also for injecting fluid into the slurry system so that the concentration can be positively maintained. The apparatus provides for a uniform dilution of slurry so that the fluids will not seg... | 09/24/1985 |
| 4464851 | Underwater harvester for marine life A mechanical harvester for marine bivalve mollusks and the like. A harvester head is provided for movement along a bottom to be harvested, which head includes driven tined elements for dislodging mollusks from the bottom and for removing dislodged mollusk... | 08/14/1984 |
| 4444229 | Slurry concentration apparatus An apparatus for increasing the solids to fluids ratio of a slurry is constructed from a chamber which has a substantially circular cross section with a high pressure slurry inlet mounted through said chamber wall with the axis of the inlet normal to a di... | 04/24/1984 |
| 4395833 | Sealing and lubricating system for a dredge The dredge is of the type having a bucket wheel, driven by a hydraulic motor through a gearbox, on the front of a bucket wheel carrier hinged at its rear to the dredge hull, and lowered to or raised from working depth by a cable engaged with a lifting she... | 08/02/1983 |
| 4387519 | Method for controlling the position of the suction head of a dredge in relation to the bottom Method for controlling the position of the suction head of a dredge in relation to the sludge layer on the bottom of a water way. Acoustic pulses are transmitted in front of the suction head from the dredge to the bottom. The reflected pulses are received... | 06/14/1983 |
| 4374420 | Method of accurately dredging a desired profile contour The method of dredging accurately to a desired profile contour with a cutting dredger involves the operation of a cutting assembly, the cutting tools of which describe a predetermined cutting envelope, and swinging the cutting assembly while the dredger i... | 02/15/1983 |
| 4353174 | Electronic control system for pneumatic-hydraulic pump dredge A control system is disclosed for a dredging device which includes a submersible pump having one or more chambers. Each chamber defines an air port through which air can be delivered to and exhausted from the chamber, a material discharge port for dischar... | 10/12/1982 |
