Abstract: A guide wire that includes a core shaft that is made of a first material, a coil that is provided to cover an outer periphery of the core shaft and is formed by twisting a first wire made of the first material and a plurality of second wires made of a second material different from the first material, and a distal end joint that joints a distal end of the core shaft and a distal end of the coil, and the distal end joint is made of the first material and is continuous from the distal end of the core shaft and the distal end of the first wire, and the distal end joint wraps the distal ends of the plurality of second wires.

Abstract: A cable that has a cable core with a first armor wire layer and a second armor wire layer. The second armor wire layer is segregated from the first armor wire layer, and an outer jacket is disposed about the second armor wire layer.

Abstract: An emission-capturing apparatus includes a tank having an inlet and an outlet. The apparatus further includes a muffler fluidly coupled with the outlet to intercept fluid exiting the outlet, permit passage of gas through the muffler, and inhibit passage of liquid through the muffler. The apparatus further includes a hose having a tank end and a distal end. The tank end is coupled to the inlet. The apparatus further includes a fitting fluidly coupled to the distal end of the hose. The fitting is configured to be fluidly coupled to an end section of an ejection port of a vehicle to receive an emission from the ejection port.

Abstract: Provided is a structure including a sound absorption section provided in an air flow path on an exhaust side of a fan, traversing a joint portion between a first main housing and a second main housing. The sound absorption section has a double wall structure including an inner wall facing the air flow path and an outer wall spaced outward from the inner wall. A sound absorption member is interposed in a sound absorption chamber between the inner wall and the outer wall of the sound absorption section. A communication hole communicating with the air flow path and the sound absorption chamber is formed in the inner wall of the sound absorption section at a position away from the joint portion.

Abstract: A liner for being cured by electromagnetic radiation having a wavelength in a curing range. The liner includes an outer portion. The outer portion includes a tube of impermeable material that is opaque to electromagnetic radiation having a wavelength in the curing range. An inner portion includes a tube of felt internally coated with an impermeable coating that is transparent to electromagnetic radiation having a wavelength in the curing range. The inner portion is inside the outer portion. A middle portion includes a tube of impregnable material between the inner and outer portions. Curable polymer that is curable by electromagnetic radiation having a wavelength in the curing range impregnates the felt and the impregnable material. Methods of manufacturing and installing the liner are also disclosed.

Abstract: The present invention relates to a flexible armoured pipe having a centre axis and including an internal pressure sheath and an outer sheath, where the radial distance between the internal pressure sheath and the outer sheath defines an annulus. The annulus includes at least one tensile armour layer surrounded by at least one retaining layer constituted by an elongate metallic strip wound around the at least one tensile armour with a winding angle of at least 65° in respect of the centre axis.

Abstract: A composite armour for a flexible pipe includes a composite profile and a reinforcement tape. The composite profile includes longitudinally oriented reinforcement fibres embedded in a polymer matrix. The reinforcement tape includes a woven tape comprising fibres impregnated with a polymer material, in such a way that the weft thread of the reinforcement tape is orthogonal to the longitudinal direction of the profile, and the warp thread is parallel to the longitudinal direction of the profile.

Abstract: A remote control assembly includes a sheath (22) having a longitudinal axis along a length thereof and defining an interior. A core element is disposed within the interior and extends along the length. A liner is disposed within the interior and coupled to the sheath (22). The liner surrounds the core element along the length. An outer layer (38) comprising a first material is coupled to the sheath (22). An intermediate layer (41) comprising a second material different from the first material is coupled to the outer layer (38). An inner layer (42) comprising a third material different from the first and second materials and is coupled to the intermediate layer (41). The second material of the intermediate layer (41) comprises an elastomeric material.

Abstract: A conduit for use in a pressure support system for communicating a flow of pressurized gas to the airway of a patient includes a first strip of a first material disposed helically about a central longitudinal axis such that subsequent helical convolutions of the first strip are disposed adjacent each other, and a second strip of a second material disposed helically about the central longitudinal axis along the first strip. The second strip is coupled between the subsequent helical convolutions of the first strip so as to form a hollow conduit. The first material is structured to prevent the passage of fluids therethrough. The second material is structured to allow passage of a liquid therethrough while inhibiting passage of gases therethrough.

Abstract: A wind turbine is presented. The wind turbine includes a tower, a rotor coupled to the tower, and a plurality of blades coupled to the rotor, wherein each of the plurality of blades comprises a root and a plurality of root inserts positioned circumferentially along the root. Each of the root inserts includes a metal bushing including an outer surface and a plurality of grooves formed at least on the outer surface, a core coupled to the metal bushing, and a plurality of layers wrapped around the metal bushing and the core, wherein a layer of the plurality of layers comprises a different fiber orientation from a fiber orientation of another layer of the plurality of layers.

Abstract: A hose includes an inner tube defining a central longitudinal axis there through, and is formed of a vulcanized rubber and a plurality of rod shaped particles orientated substantially parallel with the central longitudinal axis, along with other typical materials. The inner tube has a tube wall thickness (t) of between about 0.5 mm to about 1.5 mm, and the plurality of rod shaped particles is incorporated in an amount of 10% or less by weight. The hose further includes a tie layer directly surrounding the inner tube, a first reinforcement layer surrounding the tie layer, and at least a second reinforcement layer surrounding the first reinforcement layer. An interlayer is interposed between the first and the second reinforcement layer, and the interlayer bonds the first reinforcement layer to the second reinforcement layer. An outside cover surrounds the second reinforcement layer, as well as any additional layers.

Abstract: A fluid sensor (10) comprises a base member (20) defining a fluid flow path (21), a cavity filler member (26) located externally of the base member (20), and a cavity member (30) located externally of the base member (20) and the cavity filler member (26). The cavity member (30) is configured so as to provide confinement for an electromagnetic field. The base member (20) and the cavity filler member (26) are both configured so as to permit transmission of electromagnetic radiation at a frequency of the electromagnetic field therethrough. The electromagnetic field may be a radio frequency (RF) electromagnetic field. The base member (20) and/or the cavity member (30) may define an outer cavity region externally of the base member (20). The cavity filler member (26) may completely or partially fill the outer cavity region. The fluid sensor (10) may be used in the measurement of the composition and/or flow characteristics of a fluid in the fluid flow path (21).

Abstract: An exterior member for a wire harness which is formed in a tube shape so as to accommodate and protect one or a plurality of conduction paths, the exterior member includes an outer layer structure part that has an outer surface and that is an outermost layer, an inner layer structure part that has an inner surface and that is an innermost layer, and an intermediate layer structure part that is one or a plurality of layers between the outer layer structure part and the inner layer structure part.

Abstract: A composite cable includes a twisted wire formed by twisting a plurality of signal lines, and a plurality of power lines that are arranged on a circumference of a circle concentric with the twisted wire so as to surround an outer circumference of the twisted wire and are twisted around the twisted wire.

Abstract: The present invention provides a multi-layer hose comprising a cover layer, comprising a first polymer, an enhancement layer comprising woven filaments, and an inner lining, comprising a second polymer, wherein the first polymer and the second polymer are dissimilar. The first polymer is preferably a polymer with good wear resistance properties, e.g., thermoplastic polyurethane (TPU), TPU/PVC, or PVC, or PVC/NBR. The second polymer is preferably a polymer with good chemical resistance properties, e.g., ethylene propylene diene monomer (EPDM) rubber. The present invention also provides a method of manufacturing said multi-layer hose.

Abstract: A method of repairing a section of a pipe including a breach in the pipe. A surface of a wall of the pipe is prepared generally around the breach. A piece of conformable material of the type capable of carrying a curable polymer is sized in relation to a size of the breach. The sized piece of conformable material is applied to the prepared surface so that the breach is covered by the piece of conformable material. The piece of conformable material is impregnated with a curable polymer. The curable polymer is cured within the piece of conformable material thereby to seal the breach against egress of groundwater into the pipe.

Abstract: A fiber reinforced actuator includes first and second sets of fibers coupled with and arranged along a control volume to controllably constrain mobility of an actuator body. Fibers of the first set can be arranged with respect to fibers of the second set and with respect to a central axis to impart the actuator with various combinations of torsional and axial force responses. A third fiber may be included to form a helical actuator. A plurality of actuators can be coupled together for coordinated movement, thereby providing additional mobility directions, such as trans-actuator bending. The fiber-reinforced actuators and actuator assemblies are potential low cost, low energy consumption, lightweight, and simple replacements for existing motion devices such as servo-motor driven robots.

Abstract: A cable that include a hose having a conductor located thereabout. A first strength member layer is located about the conductor. A second strength member layer is located about the first strength member layer. A first jacket is located about the second strength member layer. The first jacket is fiber-reinforced. A second jacket is located about the first jacket. The second jacket is a contrasting color to the first jacket.

Abstract: A method of manufacturing a bar member including a pipe and metal members includes: forming a core member including a metal ring having an outer peripheral face subjected to face roughening and a mandrel; winding glass fibers around the outer peripheral face; winding a carbon fiber prepreg around the core member; forming the pipe externally fitted and fixed to the outer peripheral face by baking and curing the carbon fiber prepreg; pulling the mandrel out of the pipe; and screwing together the metal members and the metal ring.

Abstract: Cable structures of security systems may include multiple subassemblies having different cut-resistant characteristics. One system includes, inter alia, a portable article, a support, and a length of a cable assembly extending between a first cable end coupled to the portable article and a second cable end coupled to the support, where the cable assembly includes a first cable subassembly extending along at least a portion of the length of the cable assembly, and a second cable subassembly extending along at least the portion of the length of the cable assembly and adjacent to the first cable subassembly, and where the first cable subassembly includes a first cut resistant characteristic and the second cable subassembly includes a second cut resistant characteristic that is different than the first cut resistant characteristic.

Abstract: A duct element for the exhaust system of a motor vehicle with an internal combustion engine, including at least one flexible duct part, preferably a bellows. The flexible duct part is embodied at least partially from a first type of steel with a Mo-content ?4% or ?6% and with a N-content from 0.3% to 0.6% or from 0.18% to 0.25%, preferably embodied from steel of the type 1.4565 or the type 1.4547. Furthermore a decoupling element is provided for motor vehicles with an internal combustion engine and a respective use of steel embodied with a Mo-content ?4% or ?6% and a N-content from 0.3% to 0.6% or from 0.18% to 0.25%, preferably steel of the type 1.4565 or 1.4547.

Abstract: A composite tube made from a combination fiber and epoxy is disclosed. The tube may be made by filament winding although other materials and processes are suitable. In one example, the tube laminate is a mix of axial and helical fibers tailored to meet the stiffness and strength requirements of the particular application. Fibers having a different modulus may also be mixed to meet axial and torsional stiffness requirements. For example, high modulus fibers may be used in a helical pattern to handle high torque loads while lower modulus fibers may be used for the remaining portion of the tube laminate. The composite tube may be used for load and/or torque bearing applications and can include a support tube pressed fit into an end of the tube.

Abstract: A flexible pipe body and method of producing a flexible pipe body are disclosed.

Abstract: A shaft 6 is formed by a plurality of prepreg sheets s1, s2, s3, s4, s5, s6, s7, s8 and s9. These prepreg sheets include full length sheets and partial sheets partially provided in the axial direction of the shaft. The full length sheets include a full length hoop sheet s7. The partial sheets include glass fiber reinforced sheets s1, s4. In the shaft 6, a volume ratio Vf of the hoop layer in a specific tip part Tx is equal to or greater than 2.5% and less than 10%. The shaft 6 is lightweight and has a high degree of design freedom of a position of a center of gravity. The shaft 6 is excellent in strength of a tip part.

Abstract: A cable includes an electrically conductive cable core for transmitting electrical power and data, an insulative/protective layer circumferentially disposed around the core, an inner armor wire layer including a plurality of armor wires disposed around the cable core and the insulative layer, wherein at least one of the armor wires of the inner armor wire layer is bonded to the insulative layer, and an outer armor wire layer including a plurality of armor wires disposed around the inner armor wire layer. At least one of the armor wires of the outer armor wire layer can be bonded to the at least one of the armor wires of the inner armor wire layer.

Abstract: The invention relates to a flexible unbonded pipe for sub sea fluid transfer. The pipe comprises an inner sealing sheath defining a bore and a center axis. Inside the inner sealing sheath the pipe comprises a carcass. The pipe further comprises a pair of reinforcement layers consisting essentially of helically wound elongate armoring elements of fiber reinforced polymer material. The elongate armoring elements of the innermost of the pair of reinforcement layers are wound in a first winding direction with an angle ? to the center axis, and the elongate armoring elements of the outermost of the pair of reinforcement layers are wound in a second winding direction with an angle ? to the center axis, wherein ???f?/2, ? is about 65° or less. The pipe preferably comprises an anti-creep layer placed between the inner sealing sheath and the innermost of the pair of reinforcement layers.

Abstract: The invention relates to a bonded high-pressure rubber hose comprising a flexible internal stripwound tube (10), a liquid and gas tight liner (2) made from rubber or plastic, reinforcing plies embedded in rubber, and in specific cases an adhesively bonded coupling body (11), the lower reinforcing ply or plies being disposed at an angle smaller than the so-called angle of equilibrium (35.26°). The invention is characterized by that in addition to the primary liner the hose (2) comprises a liquid and gas tight secondary liner (7) disposed above the small angle reinforcing ply or plies (1,1a), and that the following inequality holds for the angle of lay of the lowest reinforcing ply (1) of the hose: •where •a1 is the angle of lay of the lowest small angle reinforcing ply (1) •D s is the outside diameter of the internal stripwound tube (10) •D1 is the mean diameter of the lowest small angle reinforcing ply (1).

Abstract: Cable structures of security systems may include multiple subassemblies having different cut-resistant characteristics. One system includes, inter alia, a portable article, a support, and a length of a cable assembly extending between a first cable end coupled to the portable article and a second cable end coupled to the support, where the cable assembly includes a first cable subassembly extending along at least a portion of the length of the cable assembly, and a second cable subassembly extending along at least the portion of the length of the cable assembly and adjacent to the first cable subassembly, and where the first cable subassembly includes a first cut resistant characteristic and the second cable subassembly includes a second cut resistant characteristic that is different than the first cut resistant characteristic.

Abstract: A hybrid flexible pipe and method of manufacture having one or more web layers over a tubular core and a polymer layer over the web layers and tubular core. A flexible helical reinforcement layer having gaps between strips is wrapped on top of the polymer layer. A second flexible helical reinforcement layer having gaps between strips is helically wrapped around the first helical reinforcement layer in the opposite direction. A sheath layer is positioned as the outermost layer. A first flexible helical anti-extrusion layer having a first anti-extrusion strip can be helically wrapped around the first flexible helical reinforcement layer in substantially the same direction as the first flexible reinforcement layer and a second flexible helical anti-extrusion layer having a second anti-extrusion strip can be helically wrapped around the at least one second flexible helical reinforcement layer in substantially the same direction as the second flexible helical reinforcement layer.

Abstract: A hose assembly resistant to internal high frequency high pressure fluid impulses including a tubular liner having an inner surface, an outer surface, and a wall therebetween defining a passageway, and at least one extrusion preventing layer operatively connected to said outer surface of said tubular liner. A method for making a hose assembly by extruding a flexible tubular liner, disposing an extrusion preventing layer by disposing an inner wrap of flattened fabric yarn with no interstices between adjacent windings onto an outer surface of the flexible tubular liner, and disposing an outer wrap helically counterwound about the inner wrap, securing the inner and outer wraps of the extrusion preventing layer to each other and to the tubular liner by applying a bond coating, and heating the assembly to dry, fuse, and cure the bond coating. A method of using the hose assembly.

Abstract: An umbilical casing for an umbilical, for use in underwater drilling operations includes an inner thermoplastic polymer layer, an outer thermoplastic polymer layer and at least two fibre reinforcement layers between the inner and outer thermoplastic layers. The fibre reinforcement layers are contra helical with each including at least one group of fibre yarns laid helically along the outside of the inner thermoplastic layer. Each group of fibre yarns comprises a plurality of fibre yarns laid to run in side by side fashion along the outside of the inner thermoplastic layer. An umbilical including the casing and methods of manufacture are also provided.

Abstract: A hose assembly and a method for forming the hose assembly are disclosed. The hose assembly includes a core tube having an outer peripheral surface and is formed from a fluoropolymer. The hose assembly also includes a first reinforcing layer disposed about the core tube and defining a plurality of first apertures, and a second reinforcing layer disposed about the first reinforcing layer and having an exterior surface and defining a plurality of second apertures. The hose assembly further includes a polymeric binder, formed from a binder composition, on the outer peripheral surface of the core tube, in the first and second apertures, and about the exterior surface of the second reinforcing layer to bond the first and second reinforcing layers to the core tube.

Abstract: A flexible hose structure includes at least one inner tubular layer of a first polymeric material defining a longitudinal axis, at least one meshed intermediate reinforcement layer arranged on the inner layer and having at least one first series of yarns defining first chained wales and first courses arranged according to a helical progression with a first pitch of predetermined length, and at least one second series of yarns defining second chained wales and second courses arranged according to a helical progression with a second pitch of predetermined length. The first pitch is a multiple of the second pitch, and the first wales (and the second wales are mutually interlaced with respective meshes not in a chain to exert an independent resistance to radial expansion on the inner layer.

Abstract: A free venting pipe and method of forming same, comprising a permeable tubular core member with at least one permeable hoop reinforcement layer around the core member; a substantially non-permeable membrane layer positioned outside of the hoop reinforcement layer and at least one permeable tensile reinforcement layer positioned outside of the membrane layer whereby a free volume annulus does not exist between any of the layers of the free venting pipe. The hoop and tensile reinforcement layers are comprised of a laminate construction.

Abstract: A spoolable pipe is disclosed, the spoolable pipe having an internal pressure barrier formed about a longitudinal axis, and a reinforcing layer(s) enclosing the internal pressure barrier. In one embodiment, the reinforcing layer(s) can include fibers having at least a partial helical orientation about approximately thirty and about approximately seventy degrees relative to the longitudinal axis, and, the wall can include at least one external layer enclosing the reinforcing layer(s) and having a permeability at least ten times greater than the permeability of the internal pressure barrier. The reinforcing layer(s) can further include a coating. The pipe can also include an energy conductor(s) integrated with and/or located between the internal pressure barrier and/or the reinforcing layer(s).

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: The invention relates to a flexible unbonded pipe for sub sea fluid transfer. The pipe comprises an inner sealing sheath defining a bore and a centre axis. Inside the inner sealing sheath the pipe comprises a carcass. The pipe further comprises a pair of reinforcement layers consisting essentially of helically wound elongate armoring elements of fiber reinforced polymer material. The elongate armoring elements of the innermost of the pair of reinforcement layers are wound in a first winding direction with an angle ? to the centre axis, and the elongate armoring elements of the outermost of the pair of reinforcement layers are wound in a second winding direction with an angle ? to the centre axis, wherein ???f?/2, ? is about 65° or less. The pipe preferably comprises an anti-creep layer placed between the inner sealing sheath and the innermost of the pair of reinforcement layers.

Abstract: An undersea flexible pipe for conveying hydrocarbons, the pipe including from the inside to the outside an inner sealing sheath, at least one ply of traction armors wound about the inner sealing sheath, a deformable holding layer including at least one flexible ribbon or holding band wound about the traction armor ply, and at least one tubular structure surrounding the holding layer, wherein the ribbon includes fiber strands oriented substantially in the longitudinal direction of the ribbon. The ribbon is covered by a reinforcing layer of a polymer material for the deformation resistance of the holding layer.

Abstract: A device for storing and dispensing a fluid and fluid energy using continuous analog modification of the total surface area of one or more solid surfaces against which, on one side of such surface(s), the fluid to be stored and dispensed may proximally and forcibly act and against which, on the opposed side of such surface(s), one or more elastic elements may act, withal producing the effect of a substantially constant static pressure across a range of deformation of the elastic element(s), i.e., a piezoequilibrative effect.

Abstract: Pipe with a liner or core pipe and a liner or core pipe which is insertable into a host pipe, the liner or core pipe including, in certain aspects, a pipe made of temperature-resistant non-metallic corrosion-resistant material; first and second strengthening wraps around the pipe; a plurality of spaced-apart axial strength members or pulling tapes on the pipe; and a protective outer wrap on the pipe. This abstract is provided to comply with the rules requiring an abstract which will allow a searcher or other reader to quickly ascertain the subject matter of the technical disclosure and is submitted with the understanding that it will not be used to interpret or limit the scope or meaning of the claims, 37 C.F.R. 1.72(b).

Abstract: A flexible pipe and a method of producing it. The pipe has two tubular structures, internal and external, and a tubular axial blocking layer. The tubular blocking layer comprises two section wires each having a trapezoidal cross section. The trapezoidal cross section defines a base and two sloping lateral flanks. The base of one of the two section wires is oriented toward the internal tubular structure. The base of the other section wire is oriented in the opposite direction. The section wires are wound side by side forming contiguous coils. The internal tubular structure includes a wire having a wound structure to form transversely blocked coils. One of the two section wires is wound against said structure coils.

Abstract: For use in the manufacture of reinforcement layers for flexible pipes which are capable of absorbing compressive or tensile forces, and which are used for the transport of oil and gas, a thermoplastic material is applied to a strength-imparting layer. The strength-imparting layers are reeled on reels, and following unreeling, are laminated by application of heat and in direct continuation applied to the pipe. The strength-imparting layer includes a polymer reinforced with at least 20% by volume of fibers. The thermoplastic is of a reversible type (it may change from being relatively soft, but non-sticky to being sticky by changes in temperature). The method allows manufacture of very strong reinforcements for flexible pipes which cannot be manufactured using solid material, e.g., steel, since high performing bending forces are required in shaping. A reinforcement element is provided which is capable of resisting instantaneous shock loads as the thermoplastic material is protective.

Abstract: A supply hose includes a core tube, a first layer, a second layer, and a sheath. The core tube defines a hollow interior that surrounds a central axis and is configured to transport fluid therethrough. The first layer and/or the second layer provide tensile strength to the supply line. The first layer is disposed about the core tube and includes a plurality of first fibers. The first fibers are braided about the core tube at a first angle, relative to the central axis. The second layer is disposed directly on the exterior surface of the first layer and includes a plurality of second fibers. The second fibers are braided about the exterior surface of the first layer at a second angle, relative to the central axis. The sheath may be disposed about the second layer.

Abstract: A low-pressure hose for connection to diving cylinders for underwater activities, comprising an inner tubular element, which is sheathed by an inner sheathing layer constituted by a polyester braid, the hose further comprising an outer sheathing layer constituted by nylon braiding.

Abstract: A flexible pipe comprising a flexible cylindrical tubular pipe body connected at each of its ends to a rigid connector end fitting in the form of a sleeve. The wall of the pipe body is mechanically reinforced by at least one traction layer of filaments of small thickness, presenting high traction strength, that are wound helically about the longitudinal axis of the pipe. The traction layer is composed of an array of uninterrupted filaments interconnecting the two end fittings alternately in one direction and then in the other direction, while being fastened on the end fittings.

Abstract: A method for the drainage of permeate gases from a flexible tubular pipe and a pipe embodied for carrying out the method. The pipe comprises at least one inner pressure sleeve, for the transport of hydrocarbons, which contain permeate gases which diffuse across the wall of the inner pressure sleeve. The pipe has an outer sleeve and several reinforcement layers, arranged in an annular zone between the outer sleeve and the inner pressure sleeve. The annular zone has transport ducts in which the permeate gases can circulate towards the removal. The method comprises a forced circulation of the permeate gases in the annular zone through the transport ducts towards the removal.

Abstract: A siphon tube having a polymeric material into which at least one continuous reinforcing agent is embedded, and wherein the at least one reinforcing agent runs substantially the length of the siphon tube. The polymer material can be one or more polymers selected from one or more high density polyethylenes, one or more polyamides, and one or more fluoropolymers.

Abstract: A leak detecting hose for transporting fluid. The hose has an inner and outer layer. The outer layer circumscribes the inner layer. A transition layer is located between the inner and outer layer, and the transition layer provides a flow path for the fluid in the hose when the inner layer is breached. A first conductive wire is placed in contact with the transition layer, and a second conductive wire is placed in contact with the transition layer. The conductive wires are adjacent to and spaced from each other. When the inner layer of the hose is breached, the first and second wires will contact the fluid in the flow path. The conductive wires are radially equidistant from the center of the hose and helically wound around the inner layer. The transition layer may include reinforcement material, which can have filaments that provide a flow path for the fluid.

Abstract: A core having enhanced ID stiffness is provided. The core includes inner, intermediate, and outer wall zones. The intermediate zone is spring-like in that it minimizes deformation of the inner zone from a radial deflection of the outer zone by absorbing at least some of the deformation. Similarly, the intermediate zone minimizes deformation of the outer zone from a radial deflection of the inner zone by absorbing at least some of the deformation. The intermediate zone includes at least first and second intermediate layers and one or more intermediate support layers. The first and second layers include a number of plies and gaps that are offset from each other, i.e. the plies of the first layer are radially aligned with the gaps of the second layer. The intermediate support layers are between the first and second layers and extend radially across the gaps of the first and second layers.

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).