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| Number | Title | Issue Date |
| 7363968 | Umbilical reel safety release The method of preventing over tension to an umbilical wrapped on the spool of an offshore reel when the umbilical is unexpectedly pulled from the spool on the reel, comprising providing a main disk, mounting the main disk on the spool of the reel with a slip connect... | 04/29/2008 |
| 7144202 | Silt fence installation apparatus A machine to install the lower edge of silt fence fabric in a seam in the soil includes a frame with a plow member attached. The frame can be mounted to the three point hitch of a tractor so that the machine can be raised, lowered, and tilted while being supported b... | 12/05/2006 |
| 7101116 | Cable or pipe retrieval and burial apparatus and methods An apparatus for retrieving a cable or pipe buried under water in bed material comprises a shank (2) having a first surface and a fluke member (5) having a second surface. When the apparatus is towed in a towing direction, the fluke member (5) a... | 09/05/2006 |
| 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 |
| 7044689 | Silt fence installation apparatus A machine to install the lower edge of silt fence fabric in a seam in the soil includes a frame with a plow member attached. The frame can be mounted to the three point hitch of a tractor so that the machine can be raised, lowered, and tilted while being supported b... | 05/16/2006 |
| 6837653 | Ploughs A marine plough includes twin, complementary steering mechanisms, one or more soil-engaging fins, which are able to be steered, and a tow rope attachment mechanism that enables adjustment of the position of the tow rope retention point relative to the plough. This a... | 01/04/2005 |
| 6435772 | Submarine plough A submarine plough is disclosed comprising a plough share 216 having a cutting edge 207. A heel 220 is arranged rearwardly of the cutting edge 207, and a plough beam 205 has an attachment portion for enabling a towing means 209 to tow the plough to cut a ... | 08/20/2002 |
| 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 |
| 6036403 | Cable burial system A cable burial system includes a cable burial tool having a base frame, a blade extending downwardly from the base frame and having a vertically oriented internal slot therein with a slot width, and a feed shoe with an arcuate feed shoe periphery and a fe... | 03/14/2000 |
| 5988948 | Underwater plough and method for varying ploughing depth An underwater plough for ploughing an underwater bed, the plough comprising a first share (10) and a second share (21) which is movable with respect to the first share whereby the depth of the ploughing profile presented by the plough can be varied.... | 11/23/1999 |
| 5971665 | Cable-laying apparatus and method A cable-laying technique and apparatus are disclosed. A base is lowered to the seafloor which contains multiple cable reels, each of which is preconnected to a surface production facility. An articulated plow is lowered onto the base and manipulates a ree... | 10/26/1999 |
| 5722793 | Method and device for continuously laying and burying a flexible submarine conduit It is characterized in that it consists in using a self-propelled sea plough (1) remote-controlled via a control flexible (2), said sea plough carrying at least one reel (6) of flexible conduit (7), controlling said sea plough from a site (5) so as to lay... | 03/03/1998 |
| 5707174 | Underwater cable burial machine using a single cable for towing and lifting The underwater cable burial machine uses a single cable for both towing and lifting. The machine includes a retractable cable, which is connected between a retraction mechanism and the towing cable. There is a cable guide through which the retractable cab... | 01/13/1998 |
| 5462389 | Undersea cable burial plowshare and sled apparatus This disclosure describes a physical design for an ocean floor trenching tool. The tool consists of a replaceable forward-extending plowguard and detachable hardened plow tips. Surfaces forming the tool's mouth around the plowguard cause the tool to penet... | 10/31/1995 |
| 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 |
| 4896998 | Submarine cable plough A plough by means of which a cable may be buried below the sea-bed is characterized by means to vary the length of the path of a cable extending through the plough, which means is responsive to changes in tension in the cable. In one preferred form of the... | 01/30/1990 |
| 4892443 | Cable plow A cable plow having a chassis with a pivot arm having a first end pivotably connected to the chassis and a second end pivotably connected to a plow element characterized by an arrangement extending between the plow element and the pivot arm to resist pivo... | 01/09/1990 |
| 4844658 | Apparatus for burying pipe under water A sled device for burying a pipe within the ground under water. The sled is arranged to be pulled over the ground and includes a blade adjustably mounted within a tower in the sled. The blade is arranged to cut a furrow in the ground as the sled is pulled... | 07/04/1989 |
| 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 |
| 4802793 | Pipeline or cable plough The plough consists of two portions separable by rams (72). Each portion comprises a beam (14, 16) joined to a plough body part (18, 20). The portions include two pairs of longitudinally-spaced arms (69) interconnected by pivots (70). At each end of the p... | 02/07/1989 |
| 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 |
| 4758116 | Multi-blade ditching machine A ditching machine for digging a ditch or a trench for submarine cables having at least several pairs of blades disposed along the longitudinal direction of the center body of the machine. At least the blades in the forward position have a ditching portio... | 07/19/1988 |
| 4678371 | Burying device for submarine cables and method for guiding the same A device for burying a submarine cable under water by easily and accurately detecting the cable position and a method for guiding the same by utilizing the characteristics unique to submarine cables, by supplying an AC only to the portion of the cable bet... | 07/07/1987 |
| 4664553 | Plough assembly A self-loading plough assembly comprises a plough (2) having a channel (16) for the passage of a cable or pipe (8) and a cutter or cutters (5) for cutting and lifting a wedge of material from a substrate to form a trench into which the cable or pipe (8) i... | 05/12/1987 |
| 4643613 | Underwater trenching and pipe-laying devices For burying piping (1) in a sea-bed, at least one excavating machine (3) is provided for forming a first trench (4) parallel to the front portion (11) of the piping and to a guide formwork (5) adapted both for moving parallel to the first trenc... | 02/17/1987 |
| 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 |
| 4538937 | Marine continuous pipe laying system A marine continuous pipe laying system comprising a variable departure angle reel operably connected to a retractable trenching plow and backfilling apparatus. The reel comprises a pipe straightening mechanism connected to the rotational axis of the reel ... | 09/03/1985 |
| 4470720 | Underwater trenching & pipelaying apparatus The apparatus will include a support sled portion having a pair of spaced apart elongated pontoon sections. The pontoons are interconnected by a plurality of I-beam spacer members. A cutter apparatus, including an endless cutter chain projecting into the ... | 09/11/1984 |
| 4410297 | Marine continuous pipe laying system A marine continuous pipe laying system comprising a variable departure angle reel operably connected to a retractable trenching plow and backfilling apparatus. The reel comprises a pipe straightening mechanism connected to the rotational axis of the reel ... | 10/18/1983 |
| 4362436 | Method and device for embedding cables or the like into an underwater ground A cable or the like is embedded into an underwater ground by introducing the cable into a zone of reduced density which is produced progressively in the ground by a flushing process; upon meeting with ground formations which are only insufficiently loosen... | 12/07/1982 |
| 4338042 | Apparatus for the subaqueous entrenching of pipes The invention relates to an apparatus for the entrenching of pipes in underwater beds, of the type in which a framework, provided with excavating means, is positioned across the pipe to be entrenched and dragged along the pipe so as to excavate two parall... | 07/06/1982 |
| 4295757 | Jet sled spoil scoop apparatus An apparatus for burying a pipeline in a sea bed having a spoil collection scoop surrounding the air lift intake portions of the sled. The apparatus includes a jet sled having jetting legs for disposition on the opposite sides of a pipeline to be buried a... | 10/20/1981 |
| 4264235 | Method and apparatus for securing and releasing a flexible line in a pre-existing channel A method and apparatus for securing and releasing an underwater flexible line (30) within a channel (20) is disclosed. The channel (20) is formed on the support member (22) of an offshore structure such as the leg of a fixed offshore platform of the tensi... | 04/28/1981 |
| 4245927 | Laying of pipes or cables in a bed of material A method of and apparatus for laying a pipe or cable in a bed of material. There is provided an elongated generally straight tube having a plurality of cutter means mounted in generally parallel spaced relationship with one another along the outer surface... | 01/20/1981 |
| 4190382 | Separable trenching apparatus A method and apparatus for entrenching an elongated pipeline and the like uses a trenching apparatus having a trench cutting assembly which is detachably connected to a sled base. A floating vessel has means to control positioning of the trenching apparat... | 02/26/1980 |
| 4129992 | Laying tool for laying of submarine cables into a sea-bottom Laying tool for laying of submarine cable in a sea-bottom trench. The tool comprises a drag unit and a pulling tube joined by a cardanic suspension and drawn by a vessel for use under variable sea and bottom conditions. The cable is laid out from the vess... | 12/19/1978 |
| 4037422 | Articulated jet sled An apparatus for entrenching submerged elongate structures, such as a pipeline, within the bed of a body of water. A spreader frame straddles the pipeline to be entrenched. Port and starboard sled frame members having pontoons are pivoted in the spreader ... | 07/26/1977 |
| 4011727 | Movable cable plow for constructing underwater cable A movable cable plow for dredging an underwater cable groove in a sea bed is disclosed wherein the plow is attached to a main body adapted to be pulled across the sea bed, such that it is adjustable vertically and angularly with respect to the main body. ... | 03/15/1977 |
| 3975784 | Marine structure A marine structure having a buoyant tower flexibly connected to a base on the sea bed. The buoyant tower includes a buoyant tank which is movable in guide tracks extending lengthwise of the tower. The base may have drive tracks for moving along the sea be... | 08/24/1976 |
| 3952532 | Underwater trenching and cable laying apparatus A sled supports a hydraulic motor drive digging wheel in the bottom of a body of water with a cable guide conduit feeding cable into the trench behind the wheel; hydraulic cylinders adjust the depth of the trench with all means being controlled from a sup... | 04/27/1976 |
