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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 |
| 8083437 | Underwater trenching apparatus An underwater trenching system is mountable on a side of a barge to be propelled by the barge along a waterway, the bed of which contains a trench with a laid pipeline. To remove the excess sediment from the trench the trenching unit delivers pressurized water and a... | 12/27/2011 |
| 7637696 | Underwater trenching apparatus An underwater trenching system is mountable on a side of a barge to be propelled by the barge along a waterway, the bed of which contains a trench with a laid pipeline. To remove the excess sediment from the trench the trenching unit delivers pressurized water and a... | 12/29/2009 |
| 7090433 | Underground cable laying apparatus Presented is an underground cable laying apparatus that leaves virtually no visible scar in the turf under which cable, wire, line, hose, etc. is laid. The apparatus utilizes a pair of angularly displaced turf slicing wheels to slice and separate the turf forming a ... | 08/15/2006 |
| 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 |
| 7048470 | Guide device in an offshore drilling installation A guide device suitable for use in an offshore drilling installation having at least one drilling riser extending from a floating support to the guide device on the seabed. The guide device includes a guide pipe in a buried position, wherein the guide pipe has a fro... | 05/23/2006 |
| 6904856 | Method and apparatus for accessing underwater cable or pipes A method and apparatus are provided for accessing a cable or pipe (9) buried underwater in a layer of material (10). The method comprises urging a tool (1) through the layer of material (10) by fluidising the material adjacent the tool ( | 06/14/2005 |
| 6904690 | Pipe size identifier and measuring tool A pipe size measuring tool for identifying the pipe configuration, i.e., outer diameter and inner diameter, having a plurality of gauges, each gauge having an open mouth therein. The sizes of the open mouth in each gauge are different from each other. The gauges are... | 06/14/2005 |
| 6821054 | Method and system for laying pipe through the use of a plow A method and system for laying and burying pipe a seabed using a pipe trenching plow that is advanced along the seabed to form a continuous trench. The pipe trenching plow cuts a pilot hole in the seabed using a cutting apparatus and widens and forms a trench from t... | 11/23/2004 |
| 6719494 | Cable and pipe burial apparatus and method An apparatus for burying cables and pipes in soil includes a support structure adapted for movement across a surface of the soil. A water jetting machine is provided for producing a source of pressurized water. At least two jetting arms are in fluid communication wi... | 04/13/2004 |
| 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 |
| 6588980 | Underwater cable deployment system and method An underwater cable deployment system includes a series of cables, pre-wound on a set of reels, disposed upon a pallet and connected to a distribution hub on the pallet. The pallet is lowered to the ocean floor and a remotely operated vehicle (ROV) is als... | 07/08/2003 |
| 6273642 | Buoyant propulsion underwater trenching apparatus An underwater self-propelled trenching apparatus for burying a pipeline or the like below the bottom of a body of water having a frame that is positioned on each side of the pipeline, jets in the form of nozzles that spray pressurized streams of water to ... | 08/14/2001 |
| 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 |
| 6095721 | Method and device for burying a conduit under water A method for the penetration of a body (8), having a leading edge (21) and an inclined ground contacting surface (C, D, E) extending upwardly therefrom, into a porous ground material, the pores of the ground material being at least partially filled with w... | 08/01/2000 |
| 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 |
| 6022173 | Underwater trenching system A self-guided system for trenching water bottoms for the installation of a pipeline. The preferred embodiment of the present invention teaches a system which is configured to be mounted about the pipeline to be buried, and which further contemplates a uni... | 02/08/2000 |
| 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 |
| 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 |
| 5639185 | Underwater trenching system A self-guided system for trenching water bottoms for the installation of a pipeline. The preferred embodiment of the present invention teaches a system which is configured to be mounted about the pipeline to be buried, and which further contemplates a uni... | 06/17/1997 |
| 5626438 | System for excavating and rehabilitating underground pipelines A system for excavating and rehabilitating underground pipelines. The system including an earth removal unit, a coating removal unit and a defect detection unit each of which is self-propelled to ride on and/or along underground pipelines. The earth remov... | 05/06/1997 |
| 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 |
| 5456551 | Underwater trenching system A self-guided system for trenching water bottoms for the installation of a pipeline. The preferred embodiment of the present invention teaches a system which is configured to be mounted about the pipeline to be buried, and which further contemplates a uni... | 10/10/1995 |
| 5288172 | Water jet system for trenching of pipelines A water jet system for trenching of a cable or a pipe below the floor of a river, lake, gulf or ocean bottom. Two opposed water jet legs are carried on a carriage forward of venturi tubes for disposing of the trenched bottom. The carriage includes a hydra... | 02/22/1994 |
| 5238331 | Modularized machine for reconditioning pipelines A machine and method are provided for reconditioning pipelines. The machine comprises parts and modules which are easily stowed, manually portable into and out of excavations, and easily installed together to form a machine for reconditioning the outer su... | 08/24/1993 |
| 5155928 | Method and tool for performing seabed excavation For excavation of a clay seabed, particularly in a coffer dam to expose a buried pipeline, a minimum of three water nozzles producing water jets and the associated effects 16, 17 and 18 are used. The nozzles are mounted on a disc 12 which can move horizon... | 10/20/1992 |
| 5136969 | Modularized machine for reconditioning pipelines A machine and method are provided for reconditioning pipelines. The machine comprises parts and modules which are easily stowed, manually portable into and out of excavations, and easily installed together to form a machine for reconditioning the outer su... | 08/11/1992 |
| 5088857 | Scavenging apparatus for embedding cables or the like into the soil of waters Scavenging apparatus for embedding cables or the like into the soil of waters, comprising an elongated scavenging sword being adapted to be attached at different heights to an embedding vessel movable on the soil of waters or to a surface water vessel, th... | 02/18/1992 |
| 5080530 | Laying underwater cables A freighter or coaster is temporarily converted for cable laying by an accommodation and power module, a stern side thruster and control and deployment equipment, all of which is removable after completion of the lay for the vessel to return to its normal... | 01/14/1992 |
| 4995168 | Technique for locating submerged and buried pipelines Apparatus for locating submerged buried pipelines includes a barge having a template providing a multiplicity of probes lowerable into the sea floor to contact the pipeline. A trench is excavated perpendicular to the pipeline by injecting air and/or water... | 02/26/1991 |
| 4992000 | Underwater trenching system An underwater trenching system comprises a closed trenching system that vacuums up sediment removed during the trenching operation and deposits that same sediment into the trench, thereby burying a pipeline that has settled into the trench. The invention ... | 02/12/1991 |
| 4986697 | Marine pipeline trenching plow for simultaneous pipe laying and entrenchment A method and apparatus for simultaneously digging a trench in the bottom of a body of water and laying a pipe from a barge therein. The plow is provided with vertical side plates to assist in molding the side of the cut trench so an inclined ramp can move... | 01/22/1991 |
| 4812079 | Embedding cablelike members An embedding apparatus for optionally cutting through different densities of soil and rock in order to embed cable in a waterbed. The apparatus comprises a low pressure jet assembly for cutting into the soil, a rock-cutting assembly with teeth for cutting... | 03/14/1989 |
| 4787777 | Method and device for progressively producing an underwater laying-out channel A method for progressively producing an underwater laying-out channel (3) for an object (53) to be laid out, like a cable or the like, in an underwater ground by flushing and by mechanically loosening ground formations (7) which are resistive against flus... | 11/29/1988 |
| 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 |
| 4721409 | Method and device for progressively producing an underwater laying-out channel A method for progressively producing an underwater laying-out channel (3) for an object (53) to be laid out, like a cable or the like, in an underwater ground by flushing and by mechanically loosening ground formations (7) which are resistive against flus... | 01/26/1988 |
| 4714379 | Pipelay in slurry trench A deep trench is excavated into a sea bottom. The trench is filled with a slurry, e.g. clay and water, to maintain trench integrity for a period of time. A pipeline is subsequently lowered to the trench bottom by either gravity settlement, jet down using ... | 12/22/1987 |
| 4714378 | Apparatus and method for trenching subsea pipelines Apparatus and a method for progressively forming a subsea trench and for laying a pipeline in that trench are provided. The apparatus includes a towable sled for supporting the pipeline as it is being laid in a subsea trench that is being created by fluid... | 12/22/1987 |
| 4586850 | Underwater trenching system An underwater trenching apparatus for burying pipeline and the like including a frame for positioning about the pipeline to be buried, a drive roller system operatively connected to the frame for driving the frame along the pipeline and including at least... | 05/06/1986 |
| 4575280 | Underwater trencher with pipelaying guide A process and apparatus are provided for the simultaneous trenching and installation of submarine pipelines. The apparatus is based on a single unit which includes an excavating portion, an attached ditch sidewall retention shield, and a pipeline installa... | 03/11/1986 |
| 4516880 | Underwater trenching apparatus A trenching machine for digging a trench beneath a pipeline lying on the floor of a body of water, with a pair of laterally spaced vertical cutting members, shown to be a series of water jets, positioned at each end of the machine. The cutting members are... | 05/14/1985 |
