Patents
Sitemap › F16 - Engineering elements or units; General measures for producing and maintaining effective functioning of machines or installations; Thermal insulation in general › F16L - Pipes; Joints or fittings for pipes; Supports for pipes, cables or protective tubing; Means for thermal insulation in general › F16L 15 - Screw-threaded joints; Forms of screw-threads for such joints
Patents for F16L 15 - Screw-threaded joints; Forms of screw-threads for such joints (5,444)
10/2000
10/18/2000CN2401763Y Nut for pipe joint
10/18/2000CN2401762Y Automatic seal pipe joint
10/12/2000WO2000060266A1 Drill pipe assembly
10/11/2000CN2400667Y Joint structure of sand-blast pipe
10/04/2000CN2399585Y Fast pipe joint for pipeline connection
09/2000
09/27/2000CN2398495Y Improved screw-thread pipe body
09/26/2000US6123368 Two-step, differential diameter wedge threaded connector
09/26/2000US6123364 Pipe joint
09/26/2000US6123363 Self-centering low profile connection with trapped gasket
09/26/2000US6123317 Coupling
09/19/2000US6120067 Threaded tool joint for connecting large tubes
09/13/2000EP1034380A1 Sealing threaded pairing
09/07/2000DE19856843C1 Pipe connection checking device, e.g. for correct pipe connection of nuclear reactor neutron flux measuring system, comprises sleeve on one pipe which can slide over body on other pipe when sleeve and body shapes match
09/06/2000CN1265445A Integral joint of connecting two pipes
08/2000
08/31/2000DE19854591C1 Schraubverbindung für Rohre Threaded joint for pipes
08/23/2000EP1030029A1 Integral joint for the connection of two pipes
08/23/2000EP1029192A1 Joining/connector piece for corrugated pipes
08/16/2000CN2392062Y Adjustment joint for pipeline
08/16/2000CN1263588A Screw joint for oil well piping
08/16/2000CN1055534C Threaded joint for pipes and assembling method using the same
08/10/2000DE19901990A1 Press fitting for joining pipes consists of one-piece casting made of high grade steel with one or more integrally cast sections with screw thread
08/09/2000CN2391080Y Universal joint for pipe fitting
08/09/2000CN2391079Y Thin pipe joining device
08/02/2000CN1261948A Ultra high torque double shoulder tool joint
07/2000
07/19/2000EP1020674A1 Oil well pipe screw joint, and threading method and apparatus therefor
07/18/2000US6089623 Fluid coupling having stepped synchronized threads
07/06/2000DE19859422A1 Domestic gas pipe connector with join seal comprizes graphite seal squeezed tight at screw join between pipes prior to completion by cap nut thrusting off connector collar.
07/05/2000EP1015802A1 Ultra high torque double shoulder tool joint
07/05/2000CN2386299Y Aluminium-plastic sebific duct junction valve
06/2000
06/28/2000CN1257977A Modified pipe fittings
06/21/2000EP1010815A1 Splice for a drilled pile
06/21/2000EP1009946A1 Pipe connector
06/21/2000CN1257568A Sealing threaded pairing
06/21/2000CN1257169A Quick pipe joint for pipeline connection
05/2000
05/31/2000EP1004804A1 Screw connection for pipe
05/31/2000CN2380775Y Connector for waterpipe
05/31/2000CN1053036C Joint of fibre reinforced compound meterial pipes and its compound material pipe
05/18/2000WO2000008367A3 Pipe connection
05/17/2000CN2378605Y Pipeline loose joint
05/16/2000CA2150435C Plastic coating thread and coupling assembly
05/11/2000WO2000026570A1 Joining/connector piece for corrugated pipes
05/10/2000CN2377419Y Screw-threaded joining device for joining plastics lining steel pipe for water supply
05/10/2000CN1252773A Material for sealing threaded pipe joints, and dispenser therefor
05/09/2000US6059261 Universal connector
05/04/2000WO2000025029A1 Tool joint and drill pipe made therefrom
05/04/2000DE19841801C1 Fitting für ein Rohr Fitting for a pipe
05/02/2000US6056324 Threaded connector
05/02/2000US6056212 Liquid link system
04/2000
04/26/2000EP0995937A2 Fluid coupling having stepped synchronized threads
04/20/2000WO2000022339A1 Integral threaded assembly of two metal tubes
04/20/2000WO2000022338A1 Connection device for constructing an underwater system for transporting fluid, energy or signals
04/20/2000WO2000022335A1 Installation conduit for constructing an underwater transport system for fluid, energy or signals
04/20/2000WO2000022332A1 Blocking device for constructing an underwater system for transporting fluid, energy or signals
04/20/2000WO2000022331A1 Traction device for constructing an underwater system for transporting fluid, energy or signals
04/20/2000WO2000022330A1 Assembly for constructing an underwater system for transporting fluid, energy or signals
04/20/2000DE19949561A1 Releasable capillary coupling element for fluid carrying capillary tubes for laboratory use, has spillage preventing, liquid and air sealing, porous terminations
04/20/2000DE19836273C1 Threaded pipe connection has threaded nuts with interlocking spigots having retaining wire in matching grooves
04/20/2000CA2346566A1 Installation conduit for constructing an underwater transport system for fluid, energy or signals
04/20/2000CA2346565A1 Assembly for constructing an underwater system for transporting fluid, energy or signals
04/20/2000CA2346560A1 Traction device for constructing an underwater system for transporting fluid, energy or signals
04/19/2000CN2374722Y Adapter of valve body
04/19/2000CN2374721Y Rotary joint
04/18/2000US6050610 Stress reduction groove for tubular connection
04/12/2000EP0991846A1 Stress reduction groove for tubular connection
04/12/2000CN2373658Y Quick pipe joint device
04/11/2000US6047997 Threaded connection with radiused surfaces
04/06/2000WO2000019056A1 Thread coupling for a drill string for percussive rock drilling
04/04/2000US6045165 Threaded connection tubular goods
03/2000
03/28/2000US6042153 Threaded connection for internally clad pipe
03/28/2000US6041487 Method for producing sealing surfaces on a tubular member
03/21/2000US6039360 Couplings for fluid controllers
03/16/2000WO2000014442A1 Threaded connection of two metal tubes with groove in the threading
03/16/2000WO2000014441A1 Threaded connection of two metal tubes with high tightening torque
03/15/2000EP0985866A1 Pipe fitting
03/15/2000CN2369055Y Water pipe joint of solar water tank
03/15/2000CN2369054Y Press sealing connector for pipelines
03/15/2000CN1247288A Quickly jointed tubular workpieces
03/14/2000US6036235 Two piece reusable coupling for fiberglass resin lined metal tubing sections having a cement mortar backing
03/09/2000CA2255527A1 Adapter fitting
03/08/2000CN2367873Y Compound pipe adaptor
03/08/2000CN2367872Y Compound pipe adaptor
03/01/2000CN2366656Y Protective joint for over moment of couple of special screw thread of oil well pipe
02/2000
02/29/2000US6030004 High torque threaded tool joint for drill pipe and other drill stem components
02/23/2000CN2365491Y Mechanical end face sealing ring
02/22/2000US6027145 Joint for steel pipe having high galling resistance and surface treatment method thereof
02/17/2000WO2000008370A1 Multi-start wedge thread for tubular connection
02/17/2000WO2000008367A2 Pipe connection
02/17/2000DE19935450A1 Threaded pipe connection with wear indicator for well tubings, and casings, has wear indicator which may be disposed on an internal or external shoulder of either the pin or box member
02/16/2000EP0979369A1 Threaded connection for enhanced fatigue resistance
02/15/2000US6024646 Swaged pin end of pipe connection
02/10/2000WO2000006937A1 Oil well pipe screw joint, and threading method and apparatus therefor
02/10/2000WO2000006936A1 Threaded and coupled connection for improved fatigue resistance
02/09/2000EP0978677A2 High-pressure fiber reinforced composite pipe joint
02/09/2000CN2363155Y Leakage-proof joint for drinking-water making machine
02/03/2000DE19836088C1 Rohrverbindung Pipe connection
02/02/2000EP0975545A1 Material for sealing threaded pipe joints, and dispenser therefor
01/2000
01/26/2000EP0757769B1 Method of manufacturing a pipe connector
01/26/2000CN2360691Y Extension flexible valve
01/19/2000EP0972980A2 High-pressure fiber reinforced composite pipe joint
01/19/2000CN2359549Y Improved pipe fitting
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