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| Number | Title | Issue Date |
| 8104796 | Pipe coupling A pipe joint and can include a first pipe having a flange and a second pipe having a flange. A first sleeve can be installed within the first pipe and a second sleeve can be installed within the second pipe. Moreover, an annular ring can be disposed between the flan... | 01/31/2012 |
| 7954858 | Conduit body with low friction inner surface layer A conduit body assembly includes a conduit body having a layer of lubrication material thereon to aid in pulling wires therethrough. The conduit body includes an elongate side wall, an open upper end and a conduit body interior. At least one hub is in communication ... | 06/07/2011 |
| 7857355 | High pressure pipe liner coupling assembly and method A liner assembly including a first ring member, a second ring member, a corrosion barrier ring, a first liner and a second liner. The first ring member has a body member with a first end and a second end. The first end has a first flange and a second flange extendin... | 12/28/2010 |
| 7722085 | Undersea pipe including an internal liner A pipe (1) comprising at least two pipe elements (11, 12) having internal liners of plastic material (2), the pipe elements being assembled end to end, in which the ends of the two pipe elements are welded (5)... | 05/25/2010 |
| 7651137 | Insulated pipe joint A pipeline (20) that lies primarily in the sea and that is formed of multiple steel pipe sections connected in tandem at pipe joints, includes a protective coating around the pipe sections and around the pipe joints. Each pipe section is first covered, at an ... | 01/26/2010 |
| 7472927 | Tubular member having an anti-galling coating A tubular member 12 having an internal and/or external metal thread 18, 20 at one end thereof, at least part of the thread 18, 20 being coated with an alloy of copper and tin, said alloy containing 5 wt % to 95 wt % copper. The tubular member | 01/06/2009 |
| 7452004 | Pipe connecting structure A pipe connecting structure which can prevent electrical charge of a plastic coated metal pipe using a simple structure. The structure includes beads 5a, 5b, 5c protruding from the outer surface of the end of a plastic coate... | 11/18/2008 |
| 7431341 | Pipe liner connector A pipe liner connector suitable for connecting pipe sections that comprise a liner is described. The pipe liner connector comprise vents and/or venting grooves which act to balance the pressure between the micro-annulus, formed between the liner and the pipe section... | 10/07/2008 |
| 7367362 | System and method for pipe repair A system and method of repairing a pipe including securing a reinforcing material, such as a dry fiber structure (e.g., a carbon fibers) to the surface of the pipe. A polymeric material is placed on top of the reinforcing material, self-penetrating the dry fiber str... | 05/06/2008 |
| 7360797 | Coupling assembly and method The liner assembly (10) is for use in a joint between two pipe segments. The assembly (10) includes a first ring member (50), a second ring member (60) and a corrosion barrier ring (70). The first ring member (50) is configu... | 04/22/2008 |
| 7361384 | Corrosion protection system for transport pipe An apparatus and method for coating pipelines with a hot melt adhesive coating and a tape. The coating may comprise a copolymer of an alkyl substituted hydrocarbon polymer in combination with a diene polymer and the tape to overly the coating may comprise a polymeri... | 04/22/2008 |
| 7360798 | Threaded joint for steel pipes A threaded joint for steel pipes comprising a pin 1 and a box 2 each having a contact surface comprising a threaded portion 3 or 4 and an unthreaded metal contact portion 8 is provided with improved anti-galling propertied by formi... | 04/22/2008 |
| 7353837 | Pressure reducer with adjustable flow restrictor A pressure reducer has a housing comprising an inlet and an outlet in which a flow-around body is arranged in a flow channel connecting inlet and outlet. A flow restrictor is adjustably mounted relative to the flow-around body for varying a flow rate and is movably ... | 04/08/2008 |
| 7350569 | Separable plug for use in a wellbore The invention generally relates to an apparatus and a method for conveying and operating tools in a wellbore. In one aspect, a method of performing an operation in a wellbore is provided. The method includes running a selectively separable plug member accommodating ... | 04/01/2008 |
| 7344161 | Connection of internally lined pipelines An insert for use in connecting two lengths of pipe, each having a plastic liner. The insert consists of an inner tubular member of plastics material for connection at either end to the plastic liners of two pipe lengths, an insulating sleeve surrounding a central p... | 03/18/2008 |
| 7341288 | Restrained sleeve pipe coupling A restrained sleeve coupling assembly for interconnecting pipe sections includes a generally cylindrical sleeve body, a generally cylindrical adaptor body and opposed end rings which are sleeved over the respective pipe sections to be joined. The generally cylindric... | 03/11/2008 |
| 7337841 | Casing comprising stress-absorbing materials and associated methods of use The present invention relates to subterranean drilling and well completion operations, and more particularly, to improved casing that comprises stress-absorbing materials and associated methods of use. In some embodiments, the present invention discloses methods of ... | 03/04/2008 |
| 7334820 | Concrete pipe with a corrosion-resistant inner lining The invention relates to a concrete pipe having a corrosion-resistant inner lining consisting of plastic whose one end is made as a pipe spigot end piece and whose other end is made as a pipe socket end piece to receive a pipe spigot end part of the following pipe, ... | 02/26/2008 |
| 7331615 | Pipe union with extension A pipe union with extension for interconnecting a first length and a second length of coaxial pipe may include a first annular pipe member attachable to the first length of pipe. The first annular pipe member may incorporate a circumferential flange having a shoulde... | 02/19/2008 |
| 7331612 | Low profile tension style flexible joint A low profile tension style flexible joint for pneumatic ducting may be useful as, for example, a joint for aircraft engine pneumatic ducting. The joint of the present invention may be used at both ends of a duct that passes high temperature (up to about 1200° F.) ... | 02/19/2008 |
| 7325840 | Arrangement for connecting a fiber-reinforced plastic pipe to a stainless steel flange Arrangement for connecting a fiber-reinforced plastic pipe (18) to a stainless steel flange (12, 16), in which the end of the fiber-reinforced plastic pipe (18) is accommodated in a ring-shaped groove (12a, 16a) in th... | 02/05/2008 |
| 7305799 | Bearing brace apparatus A brace apparatus having a core member adapted to absorb energy by undergoing plastic deformation and a buckling restraining assembly that maintains the structural integrity of the brace apparatus once the core member has undergone plastic deformation. A core member... | 12/11/2007 |
| 7302944 | Barrel and ball sizer for paint-ball gun A ball sizer for a paint-ball gun includes a bore having an entrance. In the preferred embodiment, the bore has a chamfer, which in turn has a smooth transition from the entrance to the bore of the sizer. The transition may define a section of a parabola, a section ... | 12/04/2007 |
| 7293689 | Two tier brazing for joining copper tubes to manifolds A brazing process for joining copper and copper alloy tubes to a fitting which includes first forming a layer of a high melting temperature noble metal on one end of a copper or copper alloy tube. The plated end is then brazed to a metal ferrule to form a copper all... | 11/13/2007 |
| 7294608 | Use of calcium sulfonate based threaded compounds in drilling operations and other severe industrial applications The present invention discloses the use of calcium sulfonate based greases compounds for use in application where the compounds are continuously, periodically or intermittently exposed to fluids that tend to contamination, erode, ablate or otherwise remove or interf... | 11/13/2007 |
| 7278439 | System and method for sealing a tank opening System for closing off an opening in a plastic tank, formed from a sheet of multilayer plastic that includes a barrier layer, the said sheet being welded around the perimeter of the opening and provided with a peripheral region that is slimmed down so as to effectiv... | 10/09/2007 |
| 7270103 | Intake apparatus of internal combustion engine A variable intake passage is made of a tubular space that is formed with a fixed member and a movable member arranged to face the fixed member and having a relative position with the fixed member changed. The movable member is moved to increase or decrease a distanc... | 09/18/2007 |
| 7264021 | High-pressure resistant hose A hose base body of multilayered construction including an inner surface layer, a reinforcing layer and an outer surface layer has uniform inner diameter, outer diameter and wall-thickness over an entire length thereof. A longitudinal end portion of the hose base bo... | 09/04/2007 |
| 7264279 | Segmented conduit having a monolithic lining A conduit (100) comprising a plurality of conduit segments (112A–112C) each having a body (120A–120C) and a segment lining (136A–136C) made of a lining material. Each body includes a joint face (132A– | 09/04/2007 |
| 7246825 | Erosion-indicating safety fitting An erosion-indicating safety fitting having a fluid passage formed within for connection in-line with a pipe and a cage of interconnecting breach passages formed into the block and surrounding the fluid passage, particularly at areas having a predicted risk of erosi... | 07/24/2007 |
| 7246966 | Bonded structural joints and method of assembling such joints A joint assembly comprises a hollow extrusion member of an asymmetrical hexagonal section and a flange casting comprising a base flange and several webs including a top web and upper side webs which have joint faces presented to corresponding joint areas on the outs... | 07/24/2007 |
| 7247006 | Method and apparatus for sealing an ultrahigh-pressure fluid system An ultrahigh-pressure fluid system, such as an ultrahigh-pressure fluid pump, includes an improved dynamic seal assembly that can withstand pressures above 40,000 psi, and more preferably, pressures up to and beyond 87,000 psi. The dynamic sealing assembly includes ... | 07/24/2007 |
| 7243728 | Sliding sleeve devices and methods using O-ring seals as shear members Devices and methods for releasably securing components of a device having a sliding sleeve arrangement to prevent premature actuation due to vibration. In a currently preferred embodiment, standard elastomeric O-rings are used as shear members. The O-ring shear memb... | 07/17/2007 |
| 7237809 | Coiled tubing connector A tubing connector comprising a rigid member having a first end and a second end; a crimping groove disposed about the rigid member; and a sleeve fixably attached to the rigid member and covering the crimping groove. A method for connecting a tubing section to a rig... | 07/03/2007 |
| 7237601 | Heat exchanger for cooling a hot gas that contains solid particles A heat exchanger for cooling a hot gas that contains solid particles, comprising heat exchanger tubes through which the hot gas flows, with the tubes being surrounded by a casing, and with ends of the tubes being welded, via weld seams, into bores of respective tube... | 07/03/2007 |
| 7231983 | Split locking ring for wellhead components The present invention is directed to a split locking ring for wellhead components. In one illustrative embodiment, the device comprises a first internally threaded wellhead component, a second wellhead component, at least a portion of which is positioned within an o... | 06/19/2007 |
| 7213576 | High pressure fuel injection tube and method of forming the same A high pressure fuel injection tube includes a connection head with a seat face in a spherical shape. A ring-like flange is spaced from the seat face in an axial direction. A conical portion is formed in the interval between the ring-like flange and the seat face. A... | 05/08/2007 |
| 7210708 | Tube joint A tube joint includes a body made of a resin material and having a first end side with an edge. A connecting member inserted into the first end side of the body has an annular expanded section which outwardly projects from an outer circumferential surface of the con... | 05/01/2007 |
| 7204524 | Flexible pipe/end fitting assembly and method An end fitting, a pipe assembly and a method of assembling a pipe assembly according to which an end fitting is provided with a bore and at least one raised portion is provided on the surface of the housing of the end fitting defining the bore. When an end portion o... | 04/17/2007 |
| 7198304 | Fluid line connector with intermediate smooth surface A fluid line connector includes a length of tubing having a plurality of corrugations formed therealong between opposing tubing ends. A non-corrugated section is disposed along the length of tubing between the opposing tubing ends such that a portion of the pluralit... | 04/03/2007 |
