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Class Information
Number: 405/177
Name: Hydraulic and earth engineering > Subterranean or submarine pipe or cable laying, retrieving, manipulating, or treating > By means advancing along terrain and guiding pipe or cable into subterranean position > With positive feed or means to vary tension in pipe or cable
Description: Method or apparatus wherein either (a) the string or conduit is in the form of an elongated flexible member and means are provided whereby a force transmitted along the member tending to pull the entrenched or buried portion from below the surface can be lessened or neutralized, or (b) a motive force is provided to feed the string or conduit from a supply toward its final position below the surface.

Patents under this class:

Patent Number Title Of Patent Date Issued
8641323 Method and apparatus for at sea pipe abandonment and recovery Feb. 4, 2014
8047744 Conduit laying machine Nov. 1, 2011
7862713 Reservoir water filtration system Jan. 4, 2011
7637697 Trencher boot and methods of laying underground cable Dec. 29, 2009
6988854 Cable dispenser and method Jan. 24, 2006
6899842 Method and installation for laying a cylindrical pipe on a support May. 31, 2005
6715963 Device and method for laying a pipeline on a seabed Apr. 6, 2004
6672802 Vertical pull apparatus Jan. 6, 2004
6481930 Apparatus and method for inserting and removing a flexible first material into a second material Nov. 19, 2002
6419424 Coil pipe trailer Jul. 16, 2002
6334739 Stinger for J-Lay pipelaying system Jan. 1, 2002
5993115 Pipeline trenching and laying device Nov. 30, 1999
5746541 Electronic dog fence installer May. 5, 1998
5190409 Buried cable removal apparatus Mar. 2, 1993
5039252 Cable feed assembly for use with a vibratory plow Aug. 13, 1991
4927294 Method and equipment for laying an elongated element underground May. 22, 1990
4744696 Cable laying apparatus May. 17, 1988
4692063 System to control tension in a cable during underground placement Sep. 8, 1987
4430022 Underground cable installing apparatus and method utilizing a multi-positionable plow blade Feb. 7, 1984
4318638 Cable detensioning apparatus Mar. 9, 1982
4150911 Control device for the laying of pipe in deep water Apr. 24, 1979
4038828 Vertical lift and control for plows Aug. 2, 1977
4028902 Apparatus for laying elongated flexible tubing Jun. 14, 1977
3995355 Laying of flexible pipe Dec. 7, 1976

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