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A method of swing on a swing is disclosed, in which a user positioned on a standard swing suspended by two chains from a substantially horizontal tree branch induces side to side motion by pulling alternately on one chain and then the other.
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| Number | Title | Issue Date |
| 8156666 | Topsoil restoration system and associated methods A method for rehabilitating a land area comprises the step of using an excavating machine to extract dirt desired to be dispersed over the land area from another area, such as a ditch. The extracted dirt is mixed with water to form a slurry. The slurry is pumped to ... | 04/17/2012 |
| 8146274 | Method and system for optimizing dredging The present invention relates to a method for optimizing the dredging of an area by a dredge equipped with a cutter suction head (4) comprising the steps of: obtaining conventional soil information of the area to be dredged; measuring local soil parameters in... | 04/03/2012 |
| 8127473 | Suction tube device provided with drive systems and method of repairing same A suction tube device having a frame, a tube, a centrifugal pump which cooperates with the tube, and a cutter head at one end of the tube. The tube, centrifugal pump, and cutter head are supported by the frame. The centrifugal pump and the cutter head are each provi... | 03/06/2012 |
| 7895775 | Draghead for a trailing suction hopper and process for dredging by means of this draghead The present invention relates to a draghead (1) for a trailing suction hopper, comprising a visor (2), revolvable around a first axis (6) for removing soil, and a suction line (31) connected to the visor (2) for the removal of the ... | 03/01/2011 |
| 7765725 | Method and device for removing subsea rocks and sediments Method and device for subsea removal of cuttings from a borehole by means of ejector (5), pump (3) and suction hose (6), the ejector (5) being powered by a pump (3) that is rigidly attached to ROV (2), said ejector (5... | 08/03/2010 |
| 7721472 | Fine sediment removal attachment for a dredge Contaminated fine sediment is removed from surfaces beneath a body of water by a shrouded, self-cleaning, wheel-guided, open suction attachment for a swinging ladder suction dredge with articulating capabilities. The attachment comprises a wheel-guided, suction asse... | 05/25/2010 |
| 7676965 | Air powered vacuum apparatus An air powered vacuum apparatus for use in an air vacuum excavation system creates a fluid flow under vacuum and reduces the sound level of the exhausting air. The apparatus comprises an injector assembly and a container for collecting spoil, i.e., dirt, sand, grave... | 03/16/2010 |
| 7621059 | Underwater sediment evacuation system This invention is directed to an underwater sediment evacuation system. The invention uses a suction pile and one or more pumps, valves, and lines to evacuate sediment contained within the internal volume of the suction pile. ... | 11/24/2009 |
| 7503134 | Inclined slope vacuum excavation container A vacuum container mounted on an inclined slope and having a liquid water storage container mounted beneath the incline of the vacuum container. The water storage container may support the vacuum container. The slope may be of sufficient angle to allow debris to be ... | 03/17/2009 |
| 7370445 | Sludge removal A sludge removal apparatus includes a sludge removal head (10) with a sludge suction duct and an water supply duct with open end portions alongside each other, and a filter (32) adjacent to the open ends of the suction duct (36) and the water su... | 05/13/2008 |
| 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 |
| 7281880 | Subsea vehicle assisted pipeline commissioning method The present invention is directed to a method for completing the commissioning of a subsea pipeline by purging with a compressed gas to dewater and dry the line wherein the operation is done on the seabed. More specifically, the method is carried out with a subsea v... | 10/16/2007 |
| 7264713 | Apparatus, system and method for remediation of contamination An apparatus, system and method for removing and treating contaminated materials on a bottom of a body of water and introducing growth packets to revitalize the treated bottom of the body of water. The structure may comprise a vessel with an open face. The vessel ma... | 09/04/2007 |
| 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 |
| 7188440 | Device and method for bringing ashore or refloating a floating body An earthmoving device is suspended from a floating body provided with a hull. To that end, suspension elements for suspending the earthmoving device in a movable manner along the outside of the hull are provided, for the purpose of carrying out operations on the wat... | 03/13/2007 |
| 7181871 | Sludge harvester for removing sludge from sludge ponds A sludge harvester for removing a concentrated nutrient sludge from a sludge pond includes a frame, one or more wheels or skids attached to the frame, means for gently breaking up at least a portion of the sludge layer adjacent to a dilute layer, and means for captu... | 02/27/2007 |
| 7083734 | Method and apparatus for cleaning a water area A method for cleaning a water area including dredging, via a dredging apparatus, waste from the water area through a suction pipe into a sedimentation basin, generating a flow of the dredged waste from the water area to the sedimentation basin via siphonage and vari... | 08/01/2006 |
| 6910436 | Propulsion steered towboat A conventional style of towboat has been used on U.S. waterways for decades, with steering control reliant on a triad of rudders for each screw, resulting in up to a dozen rudders installed. This propulsion steered towboat relies on an enhanced method of steering wi... | 06/28/2005 |
| 6860042 | Excavation system employing a jet pump An excavation system comprises a bucket, defining an outlet at its base, in fluid communication with a suction tube in fluid communication with a jet pump, configured to create a suction in the suction tube. A related method of excavating comprises loading excavatio... | 03/01/2005 |
| 6851206 | Method and apparatus for mining and metallurgically processing granular ore A method and apparatus for collecting and processing granular material admixes granular material with a fluid to produce a slurry and then removes and processes the slurry. The apparatus enables fluid flowing into the apparatus to be directed substantially simultane... | 02/08/2005 |
| 6843003 | Gravel-like material removing device The gravel-or-the-like removing device includes an impeller casing which accommodates an impeller driven by a motor in the inside thereof and has a suction opening at the center of the lower surface, a peripheral wall for preventing collapse and inflow of gravel or ... | 01/18/2005 |
| 6640470 | Contaminated sediment remediation vessel A method is described for containing dispersed particulate or soluble matter during contaminated sediment remediation operations in the marine environment. The preferred method comprises the use of a specially designed marine vessel that establishes a neg... | 11/04/2003 |
| 6578293 | Suction excavator A suction excavator including an air pump for generating a flow of air and a nozzle through which air is drawn under the influence of the air pump, the nozzle being arranged when in use to suck up spoil from an excavation, and a mechanism for separating s... | 06/17/2003 |
| 6550162 | Sediment removal system A sediment removal system includes a vessel adapted to float on the surface of a body of water, and a crawler adapted to be submerged in the body of water, wherein the crawler includes a drive system for moving the crawler across a bottom of the body of w... | 04/22/2003 |
| 6318005 | Dredge with improved auger shroud A dredge supporting a pivotal ladder with a suction auger on its free end. A shroud assembly including front, center and rear sections surrounds a large portion of the periphery of the auger. The shroud assembly is pivotal about the axis of the auger and ... | 11/20/2001 |
| 6189243 | Dredging method and dredging apparatus A dredging method and a dredging apparatus which can efficiently suck large quantities of sand and gravels deposited on the bottom of dams, rivers, harbors, etc., convey them with as much saved energy as possible, and can prevent diffusion of turbid water... | 02/20/2001 |
| 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 |
| 6145223 | Dredging apparatus A dredging apparatus for the removal of cuttings gathered around a bore hole mouth on the seabed has an ejector coupled to a suction hose and a conveyor pipe, respectively, for moving the cuttings to another place on the seabed. The dredging apparatus com... | 11/14/2000 |
| 5791073 | Vacuum excavation system A vacuum excavation system is provided in which a vacuum is generated for withdrawing dirt, water or other material from a vacuum excavation site, and whereby such material is delivered to a containment structure, preferably of the hopper type having a di... | 08/11/1998 |
| 5642576 | Suction dredge pump apparatus A suction dredge pump apparatus includes a manifold having a body defining a plurality of compartments, an intake chamber disposed adjacent to the compartments along upper ends thereof, a plurality of intake valves connected to the upper ends of the compa... | 07/01/1997 |
| 5598647 | Material transfer apparatus and method In a material transfer system, material from an excavation is drawn into a vessel by suction from a vacuum source. The vessel has discharge flaps at the bottom that are held closed by the suction. When the weight of the material in the vessel reaches a pr... | 02/04/1997 |
| 5575921 | Sludge dredging and dewatering process A method is disclosed for remediating ponds and other water sites containing sludge and other waste materials by a dredging and dewatering process which is economical and efficient, uses relatively low cost equipment and provides for high remediation rate... | 11/19/1996 |
| 5561922 | Extrusion dredging apparatus A marine dredging device comprised of scoop buckets pivotally connected to a reciprocating mechanism that extrudes soil into a receiver chamber and thence to upwardly extending soil transport tubes. Powered helices in the transport tubes serve to propel s... | 10/08/1996 |
| 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 |
| 5491913 | Control system for the suction line relief valve of a hydraulic dredge A control system for the suction line relief valve of a hydraulic dredge is disclosed. The system includes a relief valve actuator which is hydraulically operated; a hydraulic pump powered by a motor; a directional valve; an energy storage device; and hyd... | 02/20/1996 |
| 5487228 | Material transfer apparatus and method In a material transfer system, material from an excavation is drawn into a vessel by suction from a vacuum source. The vessel has discharge flaps at the bottom that are held closed by the suction. When the weight of the material in the vessel reaches a pr... | 01/30/1996 |
| 5425188 | Suction excavator The invention relates to an excavator for suction material, particularly for removing soil from underground pipes. The excavator has a pneumatic elephant trunk for removing the suctioned material and which issues into a storage tank for the suctioned mate... | 06/20/1995 |
| 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 |
| 5311682 | Hybrid dredge A hybrid dredging apparatus uses a clamshell attached to a rigid boom to dig and remove material. The clamshell then deposits the material into the hopper of a positive displacement pump for discharge at low velocities and with minimal water content. Tran... | 05/17/1994 |
| 5285587 | Underwater mining dredge Dredging apparatus (10) is provided with a flow conduit (18), a first pump (28), a second pump (30), and two valves (34, 44). The flow conduit (18) comprises a first leg (20) extending downwardly to a lower portion (22) and a second leg (24) extending upw... | 02/15/1994 |
