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)
09/1990
09/26/1990EP0389074A1 Pipe connector
09/25/1990US4958862 Hermetic metal pipe joint
09/25/1990US4958856 Pressure energized sealing joint
09/19/1990EP0236430B1 Cylindrical threaded connection with uniform interference
09/12/1990EP0386373A2 Oil field tubular connection
09/12/1990EP0386372A2 Threaded pipe joint having improved seal ring entrapment
09/11/1990US4955645 Gauging device and method for coupling threaded, tubular articles and a coupling assembly
09/11/1990US4955644 Drill pipe coupling
09/08/1990CA2004019A1 Oil field tubular connection
09/08/1990CA2002687A1 Threaded pipe joint having improved seal ring entrapment
08/1990
08/07/1990US4946201 Oil field tubular connection
08/07/1990CA1272386A1 Thread structure for percussion rock drilling
07/1990
07/31/1990US4944538 Threaded pipe joint having improved seal ring entrapment
07/24/1990US4943094 Threaded pin and box construction for composite tubulars
06/1990
06/19/1990US4934742 Hydraulic coupling
06/12/1990CA1270280A1 Tubular connections having two thread sets with multiple interengaging characteristics
05/1990
05/30/1990EP0370641A1 Pipe joint
05/29/1990US4928999 Elastomeric guard seal for tubular connections
05/29/1990CA1269686A2 Pipe connection
05/29/1990CA1269684A1 Screw joint coupling for oil pipes
05/08/1990US4923006 Insulating support for tubing string
04/1990
04/25/1990CN1041645A Hermetic metal pipe joint
04/18/1990EP0364413A1 Hermetic metal pipe joint
04/17/1990US4917409 Tubular connection
04/11/1990CN1007530B Joint for steel tubes, its manufacturing process and a set of tool to carry out the process
04/10/1990US4915426 Pipe coupling for well casing
03/1990
03/27/1990CA1267172A1 Sealing arrangement for pin and box threaded connection of tubular members
03/27/1990CA1266963A1 Device for inserting and centering associated screw- in pipes
03/21/1990EP0197050B1 Metal-to-metal wedge thread coupling connector
03/13/1990US4907828 Alignable, threaded, sealed connection
03/13/1990US4907749 Coupling
03/13/1990CA1266695A1 Well pipe joint
03/08/1990DE3928958A1 Gewindeverbindung von rohrendabschnitten und verfahren zu deren herstellung Threaded connection of pipe end and processes for their preparation
02/1990
02/27/1990US4903992 Locking ring for oil well tool
02/21/1990CN2053284U Accessories for coupling left-and right-handed threaded pipes
02/21/1990CN1039889A Screw-threaded joint for pipes
02/21/1990CN1039866A Joining of hollow drill rads
02/20/1990US4902047 Thread connector anti-rotation device
02/14/1990EP0354887A1 Method to establish a thread coupling
02/14/1990CN1039636A Hollow drill rods
02/08/1990WO1990001131A1 A force concentrating unitary fitting
02/01/1990DE3825779A1 Coupling for the releasable connection of two line end portions such as pipes or the like
01/1990
01/31/1990EP0353182A2 Threaded pipe connection
01/31/1990EP0353181A2 Drill pipe connection
01/31/1990EP0353180A2 Drill pipe
01/24/1990CN1006571B Screw-thread joint of steel pipe with sealing means
01/23/1990CA1264784A1 Metal-to-metal wedge thread coupling connector
01/23/1990CA1264783A1 Tubular connection having a parallel chevron thread
01/16/1990US4893844 Tubular coupling with ventable seal
01/16/1990US4893658 FRP pipe with threaded ends
01/11/1990WO1990000236A1 Composite thread coupling for reinforced pipe
01/09/1990US4892337 Fatigue-resistant threaded connector
12/1989
12/14/1989DE3913974A1 Arrangement for the releasable connection of two bodies, in particular tie-rod connection
11/1989
11/15/1989EP0341869A1 Pipe thread sealant paste
11/07/1989US4878285 Method of assembling coupling to tubing or casting
11/07/1989CA1262748A1 Externally threaded quick connect coupling having integral fluid pressure assisted seal
10/1989
10/25/1989EP0114856B1 Luer connection system
10/25/1989CN2046578U Lock unit for pipe thread connection of pump
10/25/1989CN1036622A Elliptical thread design
10/24/1989US4875713 Internally coated tubular system
10/10/1989US4872914 High purity, high temperature pipe thread sealant paste
10/10/1989US4872515 Drill rod for percussion drilling
10/03/1989US4871194 Oil well pipe joint and manufacturing method therefor
09/1989
09/21/1989WO1989006330A3 Tubular connection having a variable metal-to-metal seal width
09/12/1989US4865364 Conical thread form
08/1989
08/30/1989EP0329990A1 Oil-well tubing joints with anti-corrosive coating
08/15/1989US4856828 Coupling assembly for tubular articles
08/15/1989CA1258476A1 Pipe connector
08/09/1989EP0327179A1 Pressure energized sealing joint
08/08/1989US4854613 Composite connecting member for hydraulic fluid lines
08/02/1989EP0326292A2 Hydraulic coupling
07/1989
07/19/1989EP0324442A1 Elliptical thread design
07/18/1989CA1257629A1 Threaded pipe connection
07/13/1989WO1989006330A2 Tubular connection having a variable metal-to-metal seal width
07/11/1989US4846508 Tubular connector system
07/11/1989US4846507 Casing connector
07/04/1989CA1256911A1 Nozzle and retaining arrangement
06/1989
06/21/1989EP0321381A1 Tubular connector system
06/20/1989CA1340026E Tubular connection
06/20/1989CA1256144A1 Tubular connection
06/13/1989US4838491 Coupling
06/13/1989US4838068 Method of fabricating threaded connection for pipes
06/07/1989EP0173691B1 Pipe joint
06/06/1989US4835873 Gauging device and method for coupling threaded, tubular articles and a coupling assembly
06/06/1989CA1255341A1 Process for forming removable fluid tight sealing connections for high pressure ducts
05/1989
05/18/1989WO1989004426A1 Crankshaft angle sensing system
05/18/1989DE3827912A1 Sealing sleeve for pipe installations
05/17/1989CN2037801U Flexible and movable joint for indoor cast-iron drainage pipeline
05/16/1989US4830411 Threaded joint for oil-well pipe
05/16/1989CA1254248A1 Pipe coupling
05/09/1989US4828295 Steel tube threaded joint having an impervious device at the level of the threading
05/09/1989US4828294 Threaded joint for steel pipes containing a sealing device located at the level of the threading
04/1989
04/25/1989US4824145 Coupling components
04/18/1989US4822081 Driveable threaded tubular connection
04/12/1989CN1003885B Joint between two thin-walled tubes
04/04/1989US4818167 Tapered screw member having guide means
04/04/1989US4817962 Universal tubular connection having a variable metal-to-metal seal width corresponding to material yield strength
04/04/1989CA1251926A1 Method and device for the determination of the screwing torque of a tubular, conically threaded, joint having an engagement stop, useable in the oil industry
03/1989
03/22/1989CN1031888A Force concentrating unitary fitting
03/21/1989US4813717 Oilwell tubing connection
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