Abstract: A flexible pipe in which a layer of wound tape extends adjacent a surface of a tubular member to limit or prevent molecular migration through the tubular member.

Abstract: A FRP pipe comprising a helix winding layer formed by cylindrically winding reinforced fibers, wherein the helix winding layer has two ends and an axis and the reinforced fibers forming the helix winding layers are wound at an angle relative to the axis and hoop winding layers formed at each end of the helix winding layer by winding reinforced fibers at each end wherein the hoop layer are formed from the same continuous reinforced fibers, and the continuous reinforced fibers forming the hoop winding layers extend between the ends at an angle that is the same as the angle of the reinforced fibers forming the helix winding layer.

Abstract: The invention concerns a flexible duct (1) comprising from inside outwards a carcass (2) produced by a short-pitched metallic helical winding forming butt gaps (12), an overlapping layer (10) acting as a heat shield consisting of helically wound plastic strips (10a, 10b), a sealed inner pressure sheath (3), extruded in plastic on said overlapping layer (10), at least an armouring web (5) and at least an outer sealing sheath (7). The invention is characterised in that the overlapping strips (10a, 10b) are wound at a winding angle less than 35°.

Abstract: A flexible method that includes a tubular member defining a longitudinal passage adapted to contain a conveyed fluid, and a plurality of layers of flexible material helically wrapped around the tubular member.

Abstract: This is a balloon catheter having at least two lumens. One of the lumens is a large working lumen. The balloon catheter is especially useful as a guide catheter and may be used in a variety of therapeutic and diagnostic procedures. In particular, it has value in treating neurovascular embolic strokes in combination with other devices which are delivered to the stroke site through that working lumen. The remainder of the lumens typically are used to inflate and to deflate the balloon. It is highly preferable that the balloon or inflatable member be situated in a recess in the outer wall of the inventive catheter. Additionally, the distal end of the catheter past the balloon is preferably tapered. The catheter has a very low profile as compared to other catheters of the neurovascular balloon catheter genre. It may include other features such as variable stiffness along the axis of the device and anti-kinking components. The balloon is preferably compliant in nature.

Abstract: A spoolable composite tube capable of being spooled onto a reel for storage and for use in oil field applications. The spoolable tube exhibits unique anistropic characteristics that provide improved burst and collapse pressures, increased tensile strength, compression strength, and load carrying capacity, while still remaining sufficiently bendable to be spooled onto a reel in an open bore configuration. The spoolable composite tube can include an inner liner, an interface layer, fiber composite layers, a pressure barrier layer, and an outer protective layer. The fiber composite layers can have a unique triaxial braid structure.

Abstract: A high-pressure composite pipe of the present invention comprises an inner layer pipe made of a synthetic resin, and a reinforcing layer formed by spirally winding a stretched polyolefin resin sheet on an external circumferential surface of the inner layer pipe. The synthetic resin for the inner layer pipe or a heat-sealable resin is filled into a gap defined by the stretched polyolefin resin sheet, thereby avoiding penetration of water from a cut surface of the pipe.

Abstract: Disclosed is a hose (1) for a vacuum cleaner comprising synthetic resin strips (10), each of which comprises a flat portion (11), a reversed U-shaped protrusion (20) formed at an end (11a) of the flat portion (11) and having an electrical conductive wire (40) inserted therein, and a hook-shaped cover (30) integrally formed at the other end (11b) of the flat portion (11) with a predetermined space from the reversed U-shaped protrusion (20) so that the space between the protrusion (20) and the cover (30) allows smooth bending and stretching of the hose (1), wherein two adjoining strips (10, 10′) are helically wound so that the reversed U-shaped protrusion (20) of one strip is overlapped with the hook-shaped cover (30) of the other strip, thereby contacting a side wall (20a) of the reversed U-shaped protrusion (20) of one strip with an inner surface (30a) of the hook-shaped cover (30), and wherein the side wall (20a) of the reversed U-shaped protrusion (20) of one strip and the inner surface (30a) of the h

Abstract: A flexible method that includes a tubular member defining a longitudinal passage adapted to contain a conveyed fluid, and a plurality of layers of flexible material helically wrapped around the tubular member.

Abstract: A high-pressure composite pipe of the present invention comprises an inner layer pipe made of a synthetic resin, and a reinforcing layer formed by spirally winding a stretched polyolefin resin sheet on an external circumferential surface of the inner layer pipe. The synthetic resin for the inner layer pipe or a heat-sealable resin is filled into a gap defined by the stretched polyolefin resin sheet, thereby avoiding penetration of water from a cut surface of the pipe.

Abstract: A reinforcement liner and methods of manufacturing the liner are disclosed. The liner includes a fabric (100) material having first and second fibers (112, 122). The second fibers comprise chopped fibers in substantially parallel alignment for being positioned substantially about the circumference of a pipe, so the fabric can be elongated in a direction parallel to the second fibers. The liner may includes a stitching material (130) that is used to couple the first and second fibers together. The stitching material is preferably an elastic yarn.

Abstract: A spoolable composite tube capable of being spooled onto a reel for storage and for use in oil field applications. The spoolable tube exhibits unique anistropic characteristics that provide improved burst and collapse pressures, increased tensile strength, compression strength, and load carrying capacity, while still remaining sufficiently bendable to be spooled onto a reel in an open bore configuration. The spoolable composite tube can include an inner liner, an interface layer, fiber composite layers, a pressure barrier layer, and an outer protective layer. The fiber composite layers can have a unique triaxial braid structure.

Abstract: This flexible tubular pipe 1 comprises at least, from the inside outward, a carcass 3 made of interlocked strip, an internal sealing sheath 4, a cylindrical pressure vault 5 consisting of a winding of an interlocked profiled metal wire would in a helix with a short pitch, at least one ply 7, 8 of tensile armor tendons wound with a long pitch, and an external protective sealing sheath, and it is characterized in that at least one armor ply is made of steel strip 10 advantageously shaped by bending.

Abstract: A flexible pipe formed by multiple layers of different materials, and one or more vent passages are provided in one of the layers for venting any gases permeating through the pipe.

Abstract: A flexible continuous hollow element configured as a jacket enclosing a hollow space for the transport of media includes a blocking layer (26) which is an integral part of the jacket (12). The blocking layer is impermeable to volatile molecules of the medium to be transported and is configured as a fabric layer (28) enclosing the interior space (14) formed by the layer (18) of the jacket (12).

Abstract: A flexible-pipe (10). for high pressure is provided with. a sublayer (11) made of natural or synthetic rubber or man-made polymers in general, and with a first and a second stiffening layer (12, 14), which are superimposed and both consist of a high-resistance metal spiral, whereby the spiral can have one or more wires. Between the first (12) and the second (14) layer there is interposed a skim coat (13) made of natural or synthetic rubber or man-made polymers in general. The flexible pipe (10) for high pressure is also coated with a coating (15) made of natural or synthetic rubber or man-made polymers in general.

Abstract: By a sheath tube manufacturing apparatus comprising a wrapping section (20a) having a core (21a) for wrapping a single ribbon-like member (10a) having a predetermined width thereon, a member supply section (40a) for supplying the ribbon-like member at a predetermined angle, so that the ribbon-like member is wrapped spirally, with the end thereof overlapped, a rotation section (30a) for rotating the wrapping section (20a), a welding section (50a) for fusing and pressing the overlapped portion of the ribbon-like member wrapped around the wrapping section, and a member delivery section (60a) for pressing the fused overlapped portion and delivering it from the core, the single ribbon-like member having a predetermined width is wrapped spirally, with the end thereof overlapped, and this overlapped portion is welded to be formed in a cylindrical shape.

Abstract: A refrigerant transporting hose has a five-layered wall formed of an inner rubber layer, a middle rubber layer, an outer rubber layer, a first reinforcing layer formed between the inner and middle rubber layers and a second reinforcing layer formed between the middle and outer rubber layers. Each rubber layer has a thickness of at least 0.3 mm. Each reinforcing layer is a single layer of spirally wound reinforcing yarn, and the two reinforcing layers have substantially opposite spiral yarn directions. The hose having no resin layer in its wall is of improved flexibility, as well as retaining satisfactory pressure resistance, fluid impermeability and kink resistance.

Abstract: A spoolable composite tube capable of being spooled onto a reel for storage and for use in oil field applications. The spoolable tube exhibits unique anistropic characteristics that provide improved burst and collapse pressures, increased tensile strength, compression strength, and load carrying capacity, while still remaining sufficiently bendable to be spooled onto a reel in an open bore configuration. The spoolable composite tube can include an inner liner, an interface layer, fiber composite layers, a pressure barrier layer, and an outer protective layer. The fiber composite layers can have a unique triaxial braid structure.

Abstract: A flexible pipe formed by multiple layers of different materials, one of which has a vent passage.

Abstract: A flexible hose adapted construction for conveying fluids under pressure. The construction includes a core tube having a circumferential inner core tube surface and an opposing circumferential outer core tube surface. A first reinforcement layer surrounds the outer core tube surface, and is formed of one or more filaments of a first fiber. A second fiber reinforcement layer surrounds the first reinforcement layer, and is formed of one or more filaments of a second fiber. The first and second reinforcement layers are bonded together by means of a bonding agent such as an adhesive, resin, plasticizer, tackifier, or solvent, the application of which is controlled to wet only a portion of the filaments of the reinforcement layers.

Abstract: The invention concerns a flexible tubular pipe comprising, from inside outwards, a web (1) made of interlocked steel strips, an inner impervious sheath (2) in polymer material, a short-stepped helical winding of interlocked forming wire (3) arranged above the internal sheath (2), at least a hoop (4) consisting of a short-stepped metal wire winding without interlock, at least a long-stepped tractive armouring layer (5) wound around the pressure vault and an outer polymer protective and sealing sheath (8); the sickness (Ef) of the hoop (4) is greater than the thickness (Ez) of the metal forming wire (3), preferably by one to three times.

Abstract: The present invention relates to a flexible tubular pipe for carrying fluids under pressure containing H2S and to a method for designing such a flexible pipe. The pipe includes a body (7), an internal sealing sheath (8), at least one steel armouring layer (9,10) withstanding the stresses induced by the inside/outside pressure difference, and at least one traction-resisting steel armouring layer (11, 12) spirally wound at an angle less than 45° in relation to the axis of the pipe. In this pipe, at least the armouring layer withstanding the stresses induced by the inside/outside pressure difference is made of a determined steel meeting H2S resistance criteria, and at least the traction-resisting armouring layer is made from steel wires that do not meet H2S resistance criteria.

Abstract: A flexible tube having high flexibility and high resistance to pressure and causing little twist and elongation when subjected to a high internal pressure. A flexible tube 21 has an inner tubular layer 11 made of a soft resin, an inner spiral reinforcement 1 made of a hard resin and helically wound around the inner tubular layer 11, an intermediate tubular layer 12 made of a soft resin and surrounding the inner spiral reinforcement 1, and an outer spiral reinforcement 4 made of a hard resin and helically wound around the intermediate tubular layer 12 in the direction opposite to the winding direction of the inner spiral reinforcement 1. As the direction of the helix of the inner and outer spiral reinforcements 1 and 4 are opposite to each other, forces due to internal pressure acting to twist the helixes are canceled out.

Abstract: A flexible pipe and a method of manufacturing same according to which the pipe is formed by multiple layers of different materials and suitable for use in subsea and land-based applications.

Abstract: A reinforcement liner and methods of manufacturing the liner are disclosed. The liner includes a fabric material having first and second support layers. Each of the layers includes reinforcing fibers. The first and second support layers are oriented in different directions to provide support to the liner in those directions. The liner includes a stitching material that is used to couple the first and second support layers together. The stitching material is preferably an elastic yarn. One of the support layers includes long, chopped strands that are oriented parallel to each other. The long, chopped strands are directed so that they are in the peripheral direction of the finished reinforcement liner. The long, chopped fibers can be distributed continuously or only along portions of the width of the fabric. The disclosed methods of manufacturing a liner include alternative processes by which the liner can be made. The fabric is manufactured in the form of a continuous roll.

Abstract: A spoolable composite tube capable of being spooled onto a reel for storage and for use in oil field applications. The spoolable tube exhibits unique anisotropic characteristics that provide improved burst and collapse pressures, increased tensile strength, compression strength, and load carrying capacity, while still remaining sufficiently bendable to be spooled onto a reel in an open bore configuration. The spoolable composite tube can include an inner liner, an interface layer, fiber composite layers, a pressure barrier layer, and an outer protective layer. The fiber composite layers can have a unique triaxial braid structure.

Abstract: A spoolable composite tube capable of being spooled onto a reel for storage and for use in oil field applications. The spoolable tube exhibits unique anistropic characteristics that provide improved burst and collapse pressures, increased tensile strength, compression strength, and load carrying capacity, while still remaining sufficiently bendable to be spooled onto a reel in an open bore configuration. The spoolable composite tube can include an inner liner, an interface layer, fiber composite layers, a pressure barrier layer, and an outer protective layer. The fiber composite layers can have a unique triaxial braid structure.

Abstract: A spoolable composite tube capable of being spooled onto a reel for storage and for use in oil field applications. The spoolable tube exhibits unique anistropic characteristics that provide improved burst and collapse pressures, increased tensile strength, compression strength, and load carrying capacity, while still remaining sufficiently bendable to be spooled onto a reel in an open bore configuration. The spoolable composite tube can include an inner liner, an interface layer, fiber composite layers, a pressure barrier layer, and an outer protective layer. The fiber composite layers can have a unique triaxial braid structure.

Abstract: A reinforced flexible hose includes at least one inner tubular layer (2) of plastic or rubber, a knitted reinforcement (3), which has substantially , parallel rows (4) and lines (5) of substantially parallel stitches, with respective stitch counts per unit length of the hose (Nm, Nr); and an outer layer (6) which is superimposed on the reinforcement layer (3) to protect it. The knitted reinforcement layer (3) is provided in the form of a single tubular layer and is wrapped around the outer surface of the inner tubular layer (2); the rows (4) and lines (5) of stitches are substantially helical, with respective longitudinal pitches (Pm, Pr) and inclinations which are mutually opposite with respect to the longitudinal axis (Y).

Abstract: A pipe has a wiremesh reinforcement-plastic composite construction that includes a first and second spiral reinforcing wire layer. The first spiral reinforcing layer has grooves formed at selected intervals, and the second spiral reinforcing wire layer is pressed into the grooves. The first and second spiral reinforcing wire layers are deformed and joined together by pressure to form a wiremesh reinforcement. The two spiral reinforcing wire layers have a left and right spiral angle &agr;1 and &agr;2 respectively relative to the central line, the left and right spiral angles &agr;1 and &agr;2 can change in the range of 0° to 90°. Thermoplastic penetrates the wiremesh reinforcement and fills both sides of the wiremesh reinforcement to form the composite pipe or component.

Abstract: It is of the unbonded type and comprises, from the inside outwards, an internal leakproof assembly comprising a pressure vault, a first inner group of tensile armor (5), a second outer group of tensile armor (7) and an external sealing sheath (8), the tensile armor of the said inner and outer groups being wound at a lay angle of less than 55.degree., characterized in that an intermediate sealing sheath (6) is inserted between the two inner (5) and outer (7), groups of tensile armor, the inner group of tensile armor (5) being wound with a short pitch and at a lay angle of greater than 35.degree. and less than 55.degree., and the outer group of tensile armor (7) being wound with a long pitch and with a lay angle of less than 30.degree..

Abstract: A kink-resistant hose construction adapted for conveying fluids under high pressure which is flexible intermediate a central longitudinal axis to a minimum bend radius. The construction includes a thermoplastic core having an inner surface defining the inner diameter of the hose and an outer surface, and an innermost reinforcement layer disposed radially circumferentially about the outer surface of the core. The innermost reinforcement layer is formed as a composite of at least one metallic wire element and at least one non-metallic fiber element. The metallic wire element is wound helically in one direction over the outer surface of the core at a predetermined pitch angle measured relative to the longitudinal axis to define a series of first turns. Each of these first tuns is spaced-apart from an adjacent first turn to define successive pairs of first turns each having an interstitial area therebetween.

Abstract: A flexible pipe including at least one sealing liner (1); an assembly (3) of external reinforcements for withstanding the physical and chemical stress to which the flexible pipe is exposed, which assembly particularly comprises a reinforcement (2) resistant to the pressure of the fluid to be conveyed and consisting of non-contiguous coils (7,8) wound around said sealing liner (1) in a predetermined direction (e); and an intermediate strip (11) arranged between the pressure-resistant reinforcement (2) and the sealing liner (1), and wound around said sealing liner in a direction parallel or opposite to the winding direction (e) of the coils of the pressure-resistant reinforcement. The intermediate strip (11) has a low modulus of stiffness in said winding direction (3) around the sealing liner, and a high strength and modulus of stiffness in a transverse direction (e') relative to said coil winding direction.

Abstract: The use of a buried or covered flexible seabed pipeline for transporting fluids is disclosed. The pipeline comprises a sealing barrier (3) and reinforcing layers (4, 5) capable of withstanding mechanical stress and arranged around said sealing barrier. The reinforcing layers consist of at least two crosswise-arranged reinforcing plies (4, 5) of wires helically wound at respective winding angles a.sub.i to the longitudinal axis of the pipeline, such that they comply with the following relationships: when i=1, 2, . . . , 52.degree..ltoreq.a.sub.i .ltoreq.58.degree.. The arithmetic mean a.sub.m of said winding angles a.sub.i complies with the following relationship: 53.degree..ltoreq.a.sub.m .ltoreq.57.degree..

Abstract: It is of the type comprising a corrugated and sealed internal metal tube (1), a pressure vault (2) wound at a short pitch and having an internal surface which faces the corrugations of the corrugated internal tube, an intermediate sheath, at least two groups of inner and outer armoring layers (3, 5), the armoring layers being wound at a lay angle of less than 55.degree., and an outer-sheath (6), and it is characterized in that the intermediate sheath (4) is sealed and is arranged between the two groups of armoring layers (3, 5), the said inner group of armoring layers (3) bearing directly on the pressure vault (2).

Abstract: A spoolable composite tube capable of being spooled onto a reel for storage and for use in oil field applications. The spoolable tube exhibits unique anistropic characteristics that provide improved burst and collapse pressures, increased tensile strength, compression strength, and load carrying capacity, while still remaining sufficiently bendable to be spooled onto a reel in an open bore configuration. The spoolable composite tube can include an inner liner, an interface layer, fiber composite layers, a pressure barrier layer, and an outer protective layer. The fiber composite layers can have a unique triaxial braid structure.

Abstract: A composite tubular member having an outer generally cylindrical member containing fibers oriented to resist internal and external pressure and provide low bending stiffness, and two inner areas of axial reinforcement located near the neutral axis of the composite tubular members containing fibers oriented to provide high axial stiffness, high tensile strength and low bending stiffness; and fibers oriented to resist shear stress, positioned opposite each other within the walls of the outer member. These inner areas define a minor moment of inertia of bending extending diametrically through said inner areas and a major moment of inertia of bending generally orthogonal to said minor moment of inertia. Energy conductors integral to the tubular member are arranged in a plane along the minor moment of inertia formed in the tubular member.

Abstract: A flexible tube (10), in particular for use in oleodynamic circuits, comprises a substrate shaped in the form of a tubular core (12) around which at least one reinforcing layer (14) is arranged. The substrate (12) comprises a radially internal layer of elastomeric material extruded longitudinally (16) and a radially external layer (20) obtained as a result of winding a strip of rubber-coated fabric spirally around the internal layer (16).

Abstract: A high pressure hose for refrigerant made up ofan internal resin tube;an inner rubber layer, which is applied to an outer circumference thereof;a first reinforcing layer comprising a first splicing yarn, which is spirally wound around an outer circumference thereof;a second reinforcing layer comprising a second splicing yarn, which is spirally wound in the opposite direction to the first reinforcing layer around an outer circumference thereof; and,an outer rubber layer, which is applied to an outer circumference thereof,the inner rubber layer comprising rubber material whose 50% modulus M.sub.50 at a temperature of 135.degree. C. is 20 to 40 kgf/cm.sup.2.

Abstract: A flexible tubular pipe is provided having, from the inside outward, an inner sealing sleeve or tube, and an armoring including multiple armoring webs. The armoring is made up of a first armoring web on which the inner sealing sleeve or tube rests, the first armoring web including multiple interlocked wires wound with an angle A1 less than 80.degree. in relation to an axis of the flexible tubular pipe, and a set of armoring webs placed on the outside of the first armoring web, and in which at least one of the wires of the set of armoring webs is not interlocked, and is arranged so that all of the winding angles of the wires of the set of armoring webs are complementary to the angle A1, thereby obtaining a balanced flexible tubular pipe.

Abstract: A laminated pipe for oil production offshore includes a thermoplastic inner pipe coated with a laminate of matrix material having one or more layers of reinforcing fibres. A method for production of the laminated pipe and a connection device for joining the pipes are also disclosed.

Abstract: Braided tubular sleeving with at least two rib strands braided into and around the circumference, optionally encased in a smooth unribbed braid, and in one aspect coated with a vermiculite coating.

Abstract: A flexible conduit formed by a helically wound band of metal that resists burst pressure. The band has a leading edge hook and a trailing edge hook that engage and interlock. The cross-section of the band has a radially asymmetrical Z-shaped profile. When the band is helically wound, the downstream hook of one turn of the band is received in the upstream valley of the previous turn of the band so that the downstream and upstream hooks form an interlock holding the windings together. In the wound configuration, the thickness of the profile between the upstream valley and the internal surface of the tube is greater than the thickness of the profile between the downstream valley and the external surface of the tube to provide greater material thickness to reduce contact stress at the hook and valley interface and to reduce alternating stresses in the valley corners.

Abstract: Braided tubular sleeving with at least two rib strands braided into and around the circumference, optionally encased in a smooth unribbed braid, and in one aspect having a collar or ferrule at one or both ends. It is also a kit comprising a section of the sleeving and a collar or collars and a method of protecting tubing, hose and wire bundles with such sleeving.

Abstract: A flexible tubular pipe incorporating, from the inside outward, an inner sealing sleeve or tube, and an armoring comprising a plurality of armoring webs. The armoring includes a first armoring web on which the inner sealing sleeve or tube rests. The first armoring web includes a plurality of interlocked wires wound with an angle, (A1) that is less than 80.degree. in relation to the axis of the flexible tubular pipe. The armoring also includes a set of armoring webs placed on the outside of the first armoring web, each having at least one armoring web and non-interlocking wires. The winding angle of the wires is complementary to the angle (A1), so that a balanced flexible tubular pipe is created.

Abstract: A composite material tube, withstanding the internal pressure, and comprising at least two layers of pressure reinforcement fibers, or pressure resistant layers, wound at an angle at least equal in absolute value to 70.degree., with respect to the center axis of the tube. The two layers both undergo radial expansion under an effect of the pressure, with one of these two layers being inside the other. A circumferential modulus of elasticity of the external layer is greater than the circumferential modulus of elasticity of the internal layer.

Abstract: A reinforced hose including at least one of a pressure-resistant reinforcement, a tensile-strength reinforcement and/or an inner carcass. At least one of the pressure-resistant reinforcement, the tensile-strength reinforcement and the inner carcass have at least one elongated element formed as one of a profile, a cable, an interlockable wire, and a strip with the at least one elongated element being composed of an aluminum-based alloy.

Abstract: A flexible pipe with improved thermal protection in which a fluid is liable to flow under pressure and comprising at least one tightness sheath or tube of polymeric material, at least one reinforcement therein further comprises as thermal protection, a sheath of composite material comprising cork granules and a flexible metal tube which is disposed outside said sheath of composite material. Application notably to flexible pipes for oil installations.

Abstract: A catheter guide wire which, despite its reduced diameter, exhibits improved strength and resistance to corrosion by body fluids and medicines. The catheter guide wire 10 is composed of a stainless steel core wire 11, a winding of a low carbon duplex structure steel wire 13 having a diameter smaller than 30 .mu.m and a tensile strength higher than 300 kgf/mm.sup.2, said winding covering the core wire such that tiers of the low carbon duplex structure steel wire run obliquely to the axis of the core wire 11 and have turns crossing each other, and a polyester resin film 15, thinner than 3 .mu.m, covering the low carbon duplex structure steel wire 13. The catheter is composed of a resin inner tube and a low carbon duplex structure steel wire 13 covered with a polyester resin film 15, which runs around the resin inner tube obliquely to the axis and crosses each other.