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Class Information
Number: 405/163
Name: Hydraulic and earth engineering > Subterranean or submarine pipe or cable laying, retrieving, manipulating, or treating > Submerging, raising, or manipulating line of pipe or cable in or from marine environment > Entrenched or buried > Entrenching or burying apparatus guided by pre-positioned pipe or cable > With bottom fluidizing means
Description: Method or apparatus wherein an initially relatively firm bottom material supporting the pre-positioned string or conduit is caused to assume a flowable state, thereby permitting the string or conduit to settle into a position beneath the bottom.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 8083437 |
Underwater trenching apparatus |
Dec. 27, 2011 |
| 7637696 |
Underwater trenching apparatus |
Dec. 29, 2009 |
| 7468884 |
Riser retention system |
Dec. 23, 2008 |
| 7048470 |
Guide device in an offshore drilling installation |
May. 23, 2006 |
| 6904856 |
Method and apparatus for accessing underwater cable or pipes |
Jun. 14, 2005 |
| 6821054 |
Method and system for laying pipe through the use of a plow |
Nov. 23, 2004 |
| 6719494 |
Cable and pipe burial apparatus and method |
Apr. 13, 2004 |
| 6705029 |
Trenching machine |
Mar. 16, 2004 |
| 6588980 |
Underwater cable deployment system and method |
Jul. 8, 2003 |
| 6273642 |
Buoyant propulsion underwater trenching apparatus |
Aug. 14, 2001 |
| 6116818 |
Underwater plow apparatus and method |
Sep. 12, 2000 |
| 6095721 |
Method and device for burying a conduit under water |
Aug. 1, 2000 |
| 6053663 |
Device for creating a local water flow |
Apr. 25, 2000 |
| 6022173 |
Underwater trenching system |
Feb. 8, 2000 |
| 5944447 |
Underwater pipeline entrenching apparatus and method of using the same |
Aug. 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 |
Aug. 26, 1997 |
| 5639185 |
Underwater trenching system |
Jun. 17, 1997 |
| 5626438 |
System for excavating and rehabilitating underground pipelines |
May. 6, 1997 |
| 5546682 |
Sediment relocation machine |
Aug. 20, 1996 |
| 5456551 |
Underwater trenching system |
Oct. 10, 1995 |
| 5288172 |
Water jet system for trenching of pipelines |
Feb. 22, 1994 |
| 5238331 |
Modularized machine for reconditioning pipelines |
Aug. 24, 1993 |
| 5155928 |
Method and tool for performing seabed excavation |
Oct. 20, 1992 |
| 5136969 |
Modularized machine for reconditioning pipelines |
Aug. 11, 1992 |
| 5088857 |
Scavenging apparatus for embedding cables or the like into the soil of waters |
Feb. 18, 1992 |
| 5080530 |
Laying underwater cables |
Jan. 14, 1992 |
| 4995168 |
Technique for locating submerged and buried pipelines |
Feb. 26, 1991 |
| 4992000 |
Underwater trenching system |
Feb. 12, 1991 |
| 4986697 |
Marine pipeline trenching plow for simultaneous pipe laying and entrenchment |
Jan. 22, 1991 |
| 4812079 |
Embedding cablelike members |
Mar. 14, 1989 |
| 4787777 |
Method and device for progressively producing an underwater laying-out channel |
Nov. 29, 1988 |
| 4749308 |
Self-propelled underwater cable burying machine |
Jun. 7, 1988 |
| 4721409 |
Method and device for progressively producing an underwater laying-out channel |
Jan. 26, 1988 |
| 4714378 |
Apparatus and method for trenching subsea pipelines |
Dec. 22, 1987 |
| 4714379 |
Pipelay in slurry trench |
Dec. 22, 1987 |
| 4586850 |
Underwater trenching system |
May. 6, 1986 |
| 4575280 |
Underwater trencher with pipelaying guide |
Mar. 11, 1986 |
| 4516880 |
Underwater trenching apparatus |
May. 14, 1985 |
| 4479741 |
Device for laying underground or digging up subsea conduits |
Oct. 30, 1984 |
| 4389139 |
Oscillating jet head underwater trenching apparatus |
Jun. 21, 1983 |
| 4342526 |
Submersible backfill machine |
Aug. 3, 1982 |
| 4330225 |
System for entrenching submerged elongated structures |
May. 18, 1982 |
| 4301606 |
Apparatus for excavating a trench underneath a pipeline installed on the sea bottom |
Nov. 24, 1981 |
| 4295757 |
Jet sled spoil scoop apparatus |
Oct. 20, 1981 |
| 4280289 |
Underwater trenching machine for burying pipeline and the like |
Jul. 28, 1981 |
| 4274760 |
Self-propelled underwater trenching apparatus and method |
Jun. 23, 1981 |
| 4245927 |
Laying of pipes or cables in a bed of material |
Jan. 20, 1981 |
| 4190382 |
Separable trenching apparatus |
Feb. 26, 1980 |
| 4154551 |
Flow-through swivel pipe joint |
May. 15, 1979 |
| 4117689 |
Submarine pipe trenching apparatus |
Oct. 3, 1978 |
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