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Class Information
Number: 405/178
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 > Simultaneous laying of plural parallel pipes or cables
Description: Methods or apparatus relating to the concurrent placement of two or more parallel strings or conduits below the earth surface.










Patents under this class:

Patent Number Title Of Patent Date Issued
8668406 Subsea cable installation Mar. 11, 2014
8303216 Laying device Nov. 6, 2012
8047744 Conduit laying machine Nov. 1, 2011
7637697 Trencher boot and methods of laying underground cable Dec. 29, 2009
7524142 Subsurface installation of tubing Apr. 28, 2009
6953305 Bundle of pipes and method for parallel arrangement of pipes according to a bore and swivel method Oct. 11, 2005
6742964 Method for installing conduit or the like on mountainside Jun. 1, 2004
6588984 Method for installing conduit or the like on mountain surface using steel cable Jul. 8, 2003
6511260 Plow for installing utility lines Jan. 28, 2003
5741088 Apparatus for underground excavation Apr. 21, 1998
5558465 Method and device for laying an underground telecommunications cable Sep. 24, 1996
4981396 Multiple pipe installation backfilling, and compaction attachment Jan. 1, 1991
4714381 Machine for laying conduit and methods for use thereof Dec. 22, 1987
4661018 Apparatus for and method of installing underground cable having above ground terminals Apr. 28, 1987
4629363 Continuous conduit laying apparatus Dec. 16, 1986
4418561 Apparatus for manufacture of tunnel tubes Dec. 6, 1983
4406150 Apparatus and process for improved manufacture of shells for tunnel tubes Sep. 27, 1983
4406151 Collapsible fixture for manufacture of tunnel tubes Sep. 27, 1983
4332511 Cable burying apparatus Jun. 1, 1982
4318638 Cable detensioning apparatus Mar. 9, 1982
4162865 Method for laying carrier cables, such as telephone lines Jul. 31, 1979
3977703 Multiple duct underground conduit Aug. 31, 1976
3948059 Cable plow chute multi-lay cables Apr. 6, 1976
3931717 Multiple cable chute Jan. 13, 1976











 
 
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