| Patents for F16L 15 - Screw-threaded joints; Forms of screw-threads for such joints (5,444) |
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| 08/25/1987 | USRE32482 Connector for liquid chromatography devices |
| 08/25/1987 | US4688832 Well pipe joint |
| 08/25/1987 | US4688830 Externally threaded quick connect coupling having integral fluid pressure assisted seal |
| 08/18/1987 | US4687368 Thread structure for percussion rock drilling |
| 08/06/1987 | DE3603510A1 Crystal bag for pipe connections |
| 08/05/1987 | EP0231076A1 Pipe union assembly |
| 08/04/1987 | US4684283 Handle socket adapter |
| 07/30/1987 | WO1987004505A1 Composite threaded joint for steel tube |
| 07/29/1987 | EP0229861A1 Coupling for oil and gas field pipes |
| 07/28/1987 | US4682797 Connecting arrangement with a threaded sleeve |
| 07/16/1987 | DE3542523C1 Length of pipe |
| 07/14/1987 | US4679831 Pipe coupling connection sealing apparatus |
| 07/02/1987 | DE3545883A1 Method of producing threaded connections and threaded connection of components made of high-alloyed chromium-nickel steels |
| 06/30/1987 | US4676529 Pipe joint |
| 06/30/1987 | CA1223615A1 Means for weld-free connection of pipes |
| 06/23/1987 | CA1223248A1 Compensation device for insertion in a drill string for deep-well drilling tools |
| 06/16/1987 | US4673201 Pipe connector |
| 06/16/1987 | CA1223004A1 Pre-set torque limiter sub |
| 06/09/1987 | US4671544 Seal for threaded pipe connection |
| 05/27/1987 | CN86107293A 管接头 Fittings |
| 05/20/1987 | EP0115542B1 Tapered threaded member with guide |
| 05/19/1987 | US4666187 Device for connecting and disconnecting hoses or pipes to and from difficultly accessible structures |
| 05/19/1987 | US4665780 Method of machining threaded pipe-ends |
| 05/05/1987 | US4662659 Tubular joint with trapped mid-joint metal-to-metal seal having unequal tapers |
| 04/29/1987 | EP0220150A1 Pipe joint |
| 04/29/1987 | EP0220088A1 Threaded joint for steel pipes comprising sealing means situated in the threads |
| 04/23/1987 | WO1987002439A1 Seal for threaded pipe connection |
| 04/21/1987 | US4659119 Latching connector |
| 04/07/1987 | US4655485 Seals for use in oil and gas well production tubing |
| 04/07/1987 | US4655479 Pre-set torque limiter sub |
| 03/26/1987 | WO1987001787A1 Threaded joint for steel pipes comprising a seal arranged at the threads |
| 03/26/1987 | WO1987001786A1 Cylindrical threaded connection with uniform interference |
| 03/04/1987 | EP0212288A2 Improved oilfield tubular joint and method of manufacturing |
| 03/03/1987 | US4647085 Sealing arrangement for pin and box threaded connection of tubular members |
| 02/17/1987 | US4643467 Threaded tubing seals |
| 02/10/1987 | US4641410 Method and apparatus for making a joint for steel tubes |
| 01/24/1987 | CN85101442A Joint for steel tubes, its manufacturing process and a set of tool to carryout the process |
| 01/20/1987 | CA1216871A1 Coupling for tubing or casing and method of assembly |
| 01/14/1987 | CN85105405A Process and apparatus for machining steel tube joints (especially used in petroleumindustry) |
| 01/13/1987 | CA1216609A1 Coupling |
| 01/07/1987 | EP0207339A1 Connecting arrangement with a screw socket |
| 12/30/1986 | EP0205421A1 Oilwell tubing connector |
| 12/23/1986 | US4630849 Oil well pipe joint |
| 12/16/1986 | US4629455 Medical instrument |
| 12/16/1986 | US4629225 Pipe joint for corrosion resistant alloys |
| 12/16/1986 | US4629224 Tubular connection |
| 12/16/1986 | US4629223 Pipe connector |
| 12/16/1986 | US4629222 Pipe connector |
| 12/16/1986 | US4629221 Pipe connectors |
| 12/10/1986 | EP0204311A2 Non-loosening leur nut |
| 12/10/1986 | EP0203919A1 An improved threaded pipe connection |
| 12/10/1986 | CN85104254A Sleeve-type screwed joint for oil pipe |
| 12/03/1986 | EP0203074A1 Oilwell tubing connection. |
| 11/25/1986 | US4624488 Tubular connection |
| 11/25/1986 | CA1214481A1 High pressure proof steel tube joint with low susceptibility to seizing |
| 11/18/1986 | US4623173 Screw joint coupling for oil pipes |
| 11/11/1986 | US4621840 Self-locking, selectively releasable mechanism for locking structural parts together with load relieving retention |
| 11/06/1986 | WO1986006456A1 Tubular connection having two thread sets with multiple interengaging characteristics |
| 11/04/1986 | US4620349 Apparatus for establishing pipe joint seals |
| 11/04/1986 | CA1213630A1 Connector |
| 10/28/1986 | US4619473 Fluid passage connector for liquid chromatograph |
| 10/28/1986 | US4619472 Pipe coupling |
| 10/22/1986 | EP0198809A2 Rock drilling device and a drill stem for said device |
| 10/15/1986 | CN86102636A Rock drilling device and a drill stem for said device |
| 10/14/1986 | US4616856 Nozzle and retaining arrangement |
| 10/14/1986 | US4616537 Pipe connection |
| 10/08/1986 | EP0196712A1 Device for connecting and disconnecting hoses or pipes to and from difficultly accessible structures |
| 09/30/1986 | US4614370 Apparatus providing a weld-free joint for intersecting pipes or tubes within a conduit system |
| 09/30/1986 | US4614120 Determination of the make-up torque for pipe joints |
| 09/23/1986 | CA1211773A1 Pipe connectors |
| 09/16/1986 | US4611838 Fluidtight pipe joint |
| 09/09/1986 | US4610467 Connector |
| 09/09/1986 | US4610069 Process for forming removable fluid tight sealing connections for high pressure ducts |
| 09/09/1986 | CA1210946A1 Pipe joint locking device |
| 09/02/1986 | US4609212 Oil or gas field casing |
| 08/26/1986 | CA1210420A1 Luer connection system |
| 08/12/1986 | CA1209359A1 Pipe joint locking device |
| 08/06/1986 | EP0190092A2 Pipe for oil fields |
| 07/30/1986 | CN85202789U Accessory of valve of vehicle tyre tube |
| 07/29/1986 | US4602807 Rod coupling for oil well sucker rods and the like |
| 07/22/1986 | US4601498 Deformable metal-to-metal seal |
| 07/22/1986 | US4601491 Pipe connector |
| 07/15/1986 | US4600225 Tubular connection having a parallel chevron thread |
| 07/15/1986 | US4600224 Tubular connection having a chevron wedge thread |
| 07/15/1986 | CA1207657A1 Device for rapidly connecting rods, tubes and casings, particularly for offshore drilling |
| 07/08/1986 | US4598455 Hydril-type connector |
| 07/08/1986 | EP0173691A4 Pipe joint. |
| 06/19/1986 | WO1986003570A1 An improved threaded pipe connection |
| 06/17/1986 | US4595219 Gas tightly sealed joint in oil field tubular goods |
| 06/10/1986 | CA1205837A1 Sleeve for lining a well wall and a tubular coupling therefor |
| 06/10/1986 | CA1205741A1 Pipe string tie-back connector |
| 06/05/1986 | WO1986003275A1 Oilwell tubing connection |
| 06/05/1986 | WO1986003274A1 Oilwell tubing connector |
| 06/03/1986 | US4592574 Conduit coupling assembly and method of use |
| 05/27/1986 | US4591195 Pipe joint |
| 05/13/1986 | US4588213 Threaded pipe connection |
| 05/10/1986 | CN85107996A Screw-thread joint of steel pipe with sealing means |
| 05/06/1986 | US4586732 Connector for liquid chromatography devices |
| 04/23/1986 | EP0178988A1 Method and device for the make up of threaded tube joints with abutting shoulders |
| 04/16/1986 | EP0178231A1 Threaded fitting for a steel pipe with a sealing means interposed between the threads |