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Class Information
Number: 138/139
Name: Pipes and tubular conduits > Flexible > Distinct layers > Metal liner
Description: Device wherein at least one of the distinct layers is a metal liner.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7407372 |
Progressing cavity pump or motor |
Aug. 5, 2008 |
| 7316548 |
Stator for an eccentric screw pump or an eccentric worm motor operating on the Moineau principle |
Jan. 8, 2008 |
| 7131827 |
Stator for an eccentric screw pump or an eccentric worm motor operating on the moineau principle |
Nov. 7, 2006 |
| 7086419 |
Composite hose with a corrugated metal tube |
Aug. 8, 2006 |
| 7069954 |
Composite hose with a corrugated metal tube |
Jul. 4, 2006 |
| 6904939 |
Flexible tubular pipe for hydrocarbon transport with carcass consisting of an elongated element stapled with a band iron |
Jun. 14, 2005 |
| 6901698 |
Irrigation device and system |
Jun. 7, 2005 |
| 6887543 |
Thermal protection sheath and its fabrication method |
May. 3, 2005 |
| 6843278 |
Flexible duct with shrinkage-proof film |
Jan. 18, 2005 |
| 6838141 |
Hose |
Jan. 4, 2005 |
| 6815026 |
Helically-wound duct |
Nov. 9, 2004 |
| 6769452 |
Leak-free flexible conduit |
Aug. 3, 2004 |
| 6692804 |
High strength extruded tubular product and method for making said product |
Feb. 17, 2004 |
| 6689440 |
Metal tubing coated with multiple layers of polymeric materials |
Feb. 10, 2004 |
| 6631741 |
Metal-composite corrugated hoses and a process for manufacturing the same |
Oct. 14, 2003 |
| 6589617 |
Metal tubing coated with multiple layers of polymeric materials |
Jul. 8, 2003 |
| 6550502 |
Composite tube comprising an inner casing |
Apr. 22, 2003 |
| 6502496 |
Armor system for flexible cables and conduits |
Jan. 7, 2003 |
| 6412521 |
Rigid line for a brake, fuel or hydraulic system in motor vehicles |
Jul. 2, 2002 |
| 6338365 |
Flexible piping structure having a continuous metal inner tube |
Jan. 15, 2002 |
| 6220305 |
Coal tar enamel coated steel pipe and process for same |
Apr. 24, 2001 |
| 6135159 |
Composite conduit for carrying fuel oil |
Oct. 24, 2000 |
| 6098667 |
Flexible piping structure having a continuous metal inner tube |
Aug. 8, 2000 |
| 6053213 |
Flexible pipe for great depths |
Apr. 25, 2000 |
| 6041827 |
Multi-layered metallic pipe and method of coating the metallic pipe |
Mar. 28, 2000 |
| 5972450 |
Metal tubing coated with multiple layers of polymeric materials |
Oct. 26, 1999 |
| 5927344 |
Subsea flexible pipe |
Jul. 27, 1999 |
| 5868171 |
Composite conduit for carrying fuel oil |
Feb. 9, 1999 |
| 5869159 |
Cushioned pole cover and method of applying the cover |
Feb. 9, 1999 |
| 5823231 |
Multi-layered hose |
Oct. 20, 1998 |
| 5813467 |
Composite cylinder termination formed using snap ring |
Sep. 29, 1998 |
| 5771975 |
Composite cylinder termination |
Jun. 30, 1998 |
| 5769128 |
Multilayer fluid conduits |
Jun. 23, 1998 |
| 5713393 |
Coal tar enamel coated steel pipe and process for same |
Feb. 3, 1998 |
| 5671780 |
Multilayer flexible conduit |
Sep. 30, 1997 |
| 5669420 |
Casing and flexible tubular conduit comprising such a casing and process for producing it |
Sep. 23, 1997 |
| 5664608 |
Multi-layered hose |
Sep. 9, 1997 |
| 5601893 |
Flexible metal pipes with a shrinkable polymer sheath, a process for their fabrication, and their utilization as flexible tubular conduits |
Feb. 11, 1997 |
| 5485948 |
Shaft and method of making same |
Jan. 23, 1996 |
| 5443099 |
Tube of composite material for drilling and/or transport of liquid or gaseous products, in particular for offshore oil exploitation and method for fabrication of such a tube |
Aug. 22, 1995 |
| 5300336 |
High performance composite coating |
Apr. 5, 1994 |
| 5259418 |
Heat reshapeable regid conduit |
Nov. 9, 1993 |
| 5236036 |
Device for delivering corrosion or deposition inhibiting agents into a well by means of an auxiliary delivery tube |
Aug. 17, 1993 |
| 5236018 |
Boring casing for boring machines |
Aug. 17, 1993 |
| 4993887 |
Compensator for solids conveyed in a stream of gas |
Feb. 19, 1991 |
| 4966202 |
Shape retention hose construction |
Oct. 30, 1990 |
| 4915991 |
Novel structural element |
Apr. 10, 1990 |
| 4867269 |
Tuned self-damping convoluted conduit |
Sep. 19, 1989 |
| 4854416 |
Tuned self-damping convoluted conduit |
Aug. 8, 1989 |
| 4853297 |
Multilayer coated corrosion resistant metal pipe |
Aug. 1, 1989 |
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