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Class Information
Number: 138/111
Name: Pipes and tubular conduits > Plural duct
Description: Device having a plurality of unconnected passageways extending completely through the pipe.










Sub-classes under this class:

Class Number Class Name Patents
138/114 Coaxial 457
138/115 Longitudinally extending common wall 220
138/113 Surrounding radially spaced duct with axially spaced supports for internal duct 284
138/112 With spacer and encircling element 207


Patents under this class:
1 2 3 4 5

Patent Number Title Of Patent Date Issued
8657730 Umbilicus for use in an umbilicus-driven fluid processing system Feb. 25, 2014
8652605 Method for producing a tubular hollow body, and tubular hollow body Feb. 18, 2014
8632276 Implement for processing, particularly sealing, ground surfaces under water, particularly bottoms and embankments of waterways, particularly canals, a method for setting up the same, a method Jan. 21, 2014
8526801 Line connector for media lines Sep. 3, 2013
8518508 Highly-durable tube usable for movement unit for rotation, flexion, and the like and method for producing the same Aug. 27, 2013
8460165 Umbilicus for use in an umbilicus-driven fluid processing system Jun. 11, 2013
8342211 Protective pipe cover and support apparatus Jan. 1, 2013
8316884 Safety drain system for fluid reservoir Nov. 27, 2012
8261778 Motor vehicle exhaust pipe Sep. 11, 2012
8257239 Umbilicus for use in an umbilicus-driven fluid processing Sep. 4, 2012
8202588 Hybrid ceramic structure with internal cooling arrangements Jun. 19, 2012
8183461 Raceway bridge assembly May. 22, 2012
7975727 Line for guiding a medium Jul. 12, 2011
7952027 Cable management system May. 31, 2011
7866022 Method and system of subduct and cable installation Jan. 11, 2011
7861745 Mine blender hose Jan. 4, 2011
7802445 Insulated and refrigerated beverage transport line Sep. 28, 2010
7770602 Double wall pipe Aug. 10, 2010
7687713 Metal raceway system Mar. 30, 2010
7631668 Piping element and manufacturing method and apparatus Dec. 15, 2009
7623940 Direct-manufactured duct interconnects Nov. 24, 2009
7597120 Pythons Oct. 6, 2009
7510395 Device for introducing substances into reaction space Mar. 31, 2009
7431053 Inner-space-sectioned tubes and method for manufacturing the same Oct. 7, 2008
7415992 Multi-conduit, multi-nozzle fluid distributor Aug. 26, 2008
7375280 Metal raceway system May. 20, 2008
7375281 Power-supplying apparatus for sliding structure May. 20, 2008
7275565 Multi-conduit, multi-nozzle fluid distributor Oct. 2, 2007
7174074 Conduit insert for optical fiber cable Feb. 6, 2007
7085455 Conduit insert for optical fiber cable Aug. 1, 2006
7077165 Double pipe Jul. 18, 2006
7014392 Device for pneumatic or hydraulic conveying of dusty, powdery or granular bulk material Mar. 21, 2006
7010906 Gas turbine engine haveing a disconnect panel for routing pipes and harnesses between a first and a second zone Mar. 14, 2006
7008366 Circumferentially driven continuous flow centrifuge Mar. 7, 2006
7003951 Hydraulic system Feb. 28, 2006
6979776 Pipe bundle for underground installation Dec. 27, 2005
6876797 Fire resistant conduit insert for optical fiber cable Apr. 5, 2005
6849172 Electrolytic process and apparatus Feb. 1, 2005
6845789 High density fiber optic cable inner ducts Jan. 25, 2005
6832981 Tube arrangement and a method for its manufacture Dec. 21, 2004
6823899 Insulated pipe arrangement and method for its production Nov. 30, 2004
6719018 Underground beverage conduit system Apr. 13, 2004
6718100 Fire resistant conduit insert for optical fiber cable Apr. 6, 2004
6702517 Pipe assembly for collecting surface water runoff and associated methods Mar. 9, 2004
6702782 Large lumen balloon catheter Mar. 9, 2004
6571794 Multi-lumen hose for respirators Jun. 3, 2003
6538198 Marine umbilical Mar. 25, 2003
6472614 Dynamic umbilicals with internal steel rods Oct. 29, 2002
6421485 Conduit insert for optical fiber cable Jul. 16, 2002
6403885 Integral cable retention device Jun. 11, 2002

1 2 3 4 5










 
 
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