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)
11/1998
11/11/1998EP0877170A1 Couplings for fluid controllers
11/11/1998CN2296946Y Multipurpose micro-controlled joint
11/08/1998CA2236984A1 Couplings for fluid controllers
11/03/1998US5829797 Threaded joint for oil well pipes
10/1998
10/29/1998WO1998047805A1 Material for sealing threaded pipe joints, and dispenser therefor
10/28/1998CN2295896Y 管道接头 Pipe joints
10/28/1998CN2295895Y Screw pipe workpiece
10/27/1998US5826921 Threaded pipe joint
10/14/1998CN2294443Y Articulated pipe bundle type heat exchanger
10/08/1998WO1998044236A1 Threaded joint for tubes
09/1998
09/30/1998EP0867597A2 Pipe connector
09/30/1998EP0867596A1 Threaded coupling for tubes
09/30/1998CN1040041C Quick joint for rapid, tight-seal connection of pipes, particularly suitable for petroleum pipes
09/23/1998EP0865562A2 Tubing connector
09/22/1998US5810401 Threaded tool joint with dual mating shoulders
09/16/1998CN2291550Y Multi-layered plastic pipe and its pipe joint
09/09/1998EP0774093B1 Pipe joint
09/02/1998EP0686244B1 Pipe connection with non-dovetail interlocking wedge threads
09/02/1998CN2289930Y Pipe joint
09/01/1998CA2146323C Pipe connecting assembly and method for joining two lengths of steel pipe by a press-fit connection
08/1998
08/27/1998WO1998037350A1 Pipe connection assembly
08/26/1998CN2289118Y Telescopic movable joint
08/19/1998CN2288334Y Multipurpose plastic tube joint
08/18/1998US5794985 Threaded pipe connection
08/04/1998US5788401 Rod joint
08/04/1998CA2146081C Threaded valve with safety joint
07/1998
07/28/1998US5785357 Locking joint
07/28/1998US5785092 High-pressure fiber reinforced composite pipe joint
07/22/1998EP0737287B1 Pipe fitting
07/21/1998US5782503 Threaded joint for tubes
07/14/1998US5779276 Connector apparatus for containing a fluid
07/09/1998DE19800163A1 Verfahren zur Reduzierung von metallischem Abrieb in einem Mehrkomponentenmetallgehäuse für ein Strömungsmittel A method of reducing metal wear in a multicomponent metal housing for a fluid
07/01/1998EP0627040B1 Method for overburden drilling, casing shoe and casing tube for the method, and coupling element for the casing tubes
06/1998
06/23/1998US5769466 Threaded joint for pipes
06/16/1998US5765836 Sealing system
06/16/1998CA2128061C Pipe coupling
06/10/1998EP0673484B1 Corrosion resistant connection for use with tubular members
06/10/1998CN2283770Y Fluid pipe connector capable of pressurization and reducing return pressure
06/02/1998CA2132767C Threaded joint for oil well pipes
05/1998
05/20/1998CN2282106Y Pipeline connecting parts
05/13/1998CN2281460Y 不锈钢管接头 Stainless steel fittings
05/06/1998EP0630455B1 Stabilized center-shoulder-sealed tubular connection
05/06/1998CN2280821Y Pipeline joint
04/1998
04/14/1998CA2111133C High strength, low torque threaded pipe connection
04/01/1998CN1177698A Screw joint for oil pipe and casing pipe
03/1998
03/04/1998CN2275667Y Tubular screw-threaded joint
02/1998
02/25/1998EP0825374A1 Sealing arrangement
02/10/1998US5716078 Thermoplastic pipe joint
01/1998
01/21/1998CN1171149A High pressure fiber reinforced composite pipe joint
01/20/1998US5709416 Threaded coupling-tool joint
01/14/1998CN1037025C Improved anti-seizure protection for joints, particularly suitable for petroleum sector
01/07/1998EP0815377A1 Threaded pipe connection
12/1997
12/24/1997CN2271200Y Internal spring type sealing joint
11/1997
11/27/1997WO1997044602A1 A pipe joint and a gasket therefor
11/26/1997EP0808437A1 A threaded joint for two tubular plastic parts
11/26/1997CN2268826Y Easily adjustable alive joints of pipes
11/26/1997CN2268825Y Sealed connection structure of adjustable meter joint-pipe
11/26/1997CN2268824Y Joint of plastic pipes
11/25/1997US5689871 Couplings for standard A.P.I. tubings and casings and methods of assembling the same
11/18/1997US5687999 Threaded joint for tubes
11/13/1997WO1997042441A1 Threaded tool joint with dual mating shoulders
11/12/1997CN2267370Y Insertion type joint for high density polyethylene tube
11/12/1997CN1164625A Plastic pipeline reducing connecting piece
11/05/1997EP0482204B1 Pipe joint
11/05/1997CN2266677Y Metal electric conduit casing type screw joint
11/05/1997CN2266676Y Solar energy vacuum tube connection sealing joint
10/1997
10/22/1997CN2265463Y Oxygen blowpipe capable of closed connection
10/21/1997US5678608 Anti-seizure protection for joints, particularly suitable for the petroleum sector
10/21/1997US5678607 Reusable pipe union and pipe cap assembly for wide thermal cycling
10/14/1997US5676406 Multiple synchronized thread fluid connector
10/08/1997CN1161423A Reinforced pressure plastic hose, and joint therefor
09/1997
09/25/1997WO1997035137A1 Pipeline coupling
09/20/1997CA2200289A1 Pipeline coupling
09/17/1997CN1159851A Steel pipe joint having high galling resistance and surface treatment method thereof
09/17/1997CN1159526A Threaded joint for metal tubes with internal coating
09/03/1997EP0792429A1 High-pressure fiber reinforced composite pipe joint
09/03/1997CN2261546Y Easily disamounting pipe joint
08/1997
08/27/1997CN2260939Y 管接头 Fittings
08/27/1997CN2260938Y Screwthrad sealing connection structure
08/14/1997WO1997021901A3 Tubing connector
08/06/1997CN2258944Y Cutting ferrule type seal joint
07/1997
07/30/1997EP0786616A1 Steel pipe joint having high galling resistance and surface treatment method thereof
07/30/1997CN1155639A Threaded joint for tubes
07/24/1997WO1997026437A1 Threaded joint
07/22/1997US5649725 Thread joint for tube
06/1997
06/25/1997EP0780617A1 Screw connection for internally coated metal pipes
06/25/1997CN2256974Y 双重接头 Dual connector
06/25/1997CN2256776Y Pipe spraying joint
06/25/1997CN1152684A Aluminium-plastics composite pipe joint
06/19/1997WO1997021901A2 Tubing connector
06/18/1997EP0778928A1 Pipe joint
06/18/1997CN2256499Y Self sealed pipe joint
05/1997
05/21/1997EP0774093A1 Pipe joint
05/07/1997EP0771400A1 Drill pipe with improved connectors
05/07/1997EP0771388A1 Thread coupling
04/1997
04/23/1997CN2252928Y Multi-screw large screw-pitch fast pipe joint
04/09/1997EP0767335A1 Threaded joint for tubes
04/02/1997EP0755492A4 Synchronized dual thread connector
03/1997
03/27/1997WO1997011303A1 Locking joint
03/27/1997CA2229805A1 Locking joint
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