Abstract: The present invention provides a spiral hose comprising: a main body made of a soft synthetic resin material and wound in a spiral shape; and a reinforcing core having an elliptical sectional shape made of a hard synthetic resin material and embedded in a spiral shape into the main body so that the entire wall of the main body has a reduced thickness.

Abstract: A pipeline for conducting air for air conditioning in aircrafts includes a body portion formed with foamed plastics material or with a dense plastics material. The body portion defines a longitudinal axis and includes an outer surface carrying a wrapping for reinforcing the pipeline. The wrapping includes a plurality of adjacent contacting layers formed by at least one linear reinforcing element wound into a plurality of windings, with adjacent layers having windings angled in opposite directions to form a net-like structure of the wrapping. At least one of the spacing between the windings along the longitudinal axis or the angle of slope between the windings and the longitudinal axis varies in certain sections to change the winding density as a function of local mechanical load requirements on the pipeline.

Abstract: The invention relates to a flexible pipe comprising a plurality of layers surrounding a longitudinal axis of the pipe, the plurality of layers comprising from inside and radially outwards an internal sheath, a pressure vault and one or more tensile armouring layers. The pressure vault comprises at least one helically wound folded metal strip, which folded metal strip is interlocked with itself in consecutive windings or interlocked with another helically wound metal strip. The at least one folded metal strip is folded along both of its edges to form protruding edge sections of two or more strip material layers, each of said protruding edge sections protruding in one of the directions towards or away from the longitudinal axis of the pipe. The pressure vault of the flexible pipe of the invention has a high strength while simultaneously being very flexible.

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: An elongate tape element and method of manufacturing flexible pipe body are disclosed. The elongate tape element which is for providing at least one helically wound layer of windings in a flexible pipe body, comprises an elongate body having a base surface, a top surface opposed to the base surface and opposed first and second side walls extending between the base and top surfaces wherein at least one surface and/or side wall of the body comprises a recessed region for receiving a respective portion of a tape element holder member when said tape element is wound to form a layer of windings.

Abstract: A flexible, typically un-bonded, armored pipe, and a method manufacturing a flexible pipe. The pipe has a center axis and comprises an inner liner surrounded by a radial armoring and an axial armoring, the radial and axial armoring each comprising at least one armoring layer of armoring profiles wound with winding angles ?i relative to the center axis. The winding angle of the innermost armoring layer ?innermost is larger than the winding angle of the outermost armoring layer ?outermost. The outer radial armoring layer has sufficient strength and flexibility to prevent prohibitively large radial deformations of underlying axial armoring layers without considerably increasing the radial contact pressure on underlying axial armoring layer. At least one fibrous layer, comprising at least two fibrous cords wound on an underlying layer, surrounds the outermost armoring layer. The flexible pipe is useful in terrestrial and/or subsea transport of fluids at elevated temperature and/or pressures.

Abstract: A smooth-bore plastic tubing with an outer helical support bead is resistant to collapse and incorporates plural conductors disposed outside of the tubing bore and insulated both from ambient and from one another. The conductors may have a desired relatively high thermal conductivity to tidal air flow within the tubing, while also having a comparatively high thermal resistance to ambient. The conductors may be electrical conductors, or may include fiber optic conductors as well in the same tubing structure.

Abstract: Flexible reinforced rubber hose adapted for conveying fluids under low temperatures and high pressures. The hose includes a inner tube formed of an acrylonitrile butadiene rubber (NBR) or other low temperature rubber compound having an elastic modulus of not greater than about 8.4 MPa (1200 psi), and an outer jacket formed of a chloroprene rubber (CR) or other low temperature rubber compound having a durometer of not greater than about 75 Shore A.

Abstract: A composite strip 10 windable to form a helical pipe for transporting fluid is disclosed. The composite strip comprises: an elongate plastic strip 11 having a base portion 12, the base portion 12 having an upper side defining an outer face 15; and at least one lengthwise extending composite rib portion 20 upstanding from the outer face 15 of the base portion 12. The rib portion 20 has a distal end 23 remote from the base portion 12. The composite rib portion comprises: an elongate inboard reinforcing member 30 disposed within or adjacent to the base portion 12; an elongate outboard reinforcing 40 member disposed within the distal end 20 of the rib portion 20 parallel to the inboard reinforcing member 30; and an elongate intermediate plastic web 23 portion extending between the inboard and outboard reinforcing members 30, 40. When wound into a helical pipe, the composite rib portion 20 reinforces the pipe against radial crushing loads.

Abstract: Apparatus and methods are disclosed relating to flexible pipe and composite tape. Flexible pipe body for a flexible pipe comprises an internal pressure sheath and at least one armour layer over the sheath comprising a wound tape of composite material. A method for manufacturing a composite tape is disclosed making use of a pultrusion process.

Abstract: In a cylindrical jacket woven into twill A, the direction of a twill line A formed by a warp 2 woven continuously over a weft 3 is substantially aligned with the direction of the central axis of the cylindrical jacket.

Abstract: The invention relates to a use of a duplex steel for the production of an armouring layer of a flexible pipe comprising at least one unbonded armouring layer and at least one unbonded sealing layer wherein the duplex steel comprises in weight percent 0.01-0.05% by weight of carbon (C) at least 0.15% by weight of nitrogen (N) 20.0-23.0% by weight of chromium (Cr) up to 3.0% by weight of nickel (Ni) up to 1.0% by weight of molybdenum (Mo) 3-6% by weight of manganese (Mn) up to 1.0% by weight of copper (Cu) incidental impurities and balance being iron (Fe).

Abstract: A composite hose includes a tubular body of flexible material for transferring cryogenic fluid through the hose and for preventing fluid leakage through the body. The tubular body includes an inner wire helix spirally wound along the length of the hose, an outer wire helix spirally wound along the length of the hose, at least two reinforcing layers placed in between the inner and outer wire, at least one sealing layer placed between two reinforcing layers, an end fitting at both ends of the tubular body, each end fitting provided with a part for connection to another hose flange and an elongated cylindrical part, which is divided in an anchoring area for anchoring the tubular body and a static sealing area for fluid tight sealing of the hose. A gas tight sealing is created by bonding the at least one sealing layer to the cylindrical part over a ring shaped bonding area.

Abstract: A flexible pipe body and a method of manufacturing flexible pipe body and a tape used during the manufacturing are disclosed. The flexible pipe body includes at least one layer of helically wound tape, adjacent windings in the layer of tape being interlocked by a hooked region of a winding nested in a valley region of an adjacent winding wherein the tape has a cross-sectional profile comprising a first contact surface and parallel spaced apart side walls substantially perpendicular to the contact surface.

Abstract: A hose having both excellent flexibility and shape retainability and advantageous in construction efficiency and cost efficiency. The hose comprises hard synthetic resin reinforcement material (2) spirally fed and having, on both sides of the top part (2D) thereof in the tube axial direction, receiving surfaces (2a) and (2b) positioned on the radial inner side toward the end part thereof and a soft synthetic resin hose body for covering the spirally fed reinforcement materials (2). The reinforcement materials (2) are spirally fed in the state of the top parts being positioned on the radial outer side thereof, a soft synthetic resin tape material (3) is fed to the fed reinforcement (2), and while covering parts (3A) projected in a generally arc shape to the center of the reinforcement materials (2) by melting the tape material or with an adhesive agent.

Abstract: A hose comprising a tubular body of flexible material arranged between inner and outer gripping members, wherein at least one of the gripping members is made of a material, especially a composite material, which expands on cooling.

Abstract: A conduit constructed from a coiled wire having an oval or elliptical cross-sectional shape.

Abstract: A flexible duct including: a first, inner layer that includes multiple helical windings of a strip of thin flexible material; a second layer overlying and adhered to the first, inner layer and including multiple helical windings of a tube containing insulating material; and a helically wound reinforcing element.

Abstract: Low or near zero fluid permeation hose for petroleum and other chemical transfer applications. The hose includes an inner tube formed of a vulcanized rubber, and a barrier layer of a strip of a fluoropolymer of other polymeric material resistant to fluid permeation. The strip is spiral wound about the longitudinal axis of the hose.

Abstract: The helix heated hoses 10 and 12 use two features to increase the flexibility. The first feature is a braided-copper heating element 14, which has increased flexibility over the prior art solid copper heating element. The element is spiral wound around the hose and held in place with a moisture barrier 16. The second feature is the helix twist 18 located just before the point where the hoses 10 and 12 attach to the manifold 20. The helix feature is created with the helix support 22, which initiates the twist around 24 inches back from the point of termination. The helix feature works to reduce the moment of inertia about the neutral axis 26 of the two supply hoses 10 and 12.

Abstract: A hose 10 comprising an inner elongate supporting member 12 arranged along the length of the hose, the supporting member having a plurality of coils arranged in a substantially helical configuration; a tubular reinforcing/sealing layer 100 disposed around the supporting member 12; and a coil retaining means 14 adapted to prevent coils of the supporting member 12 from moving apart relative to one another.

Abstract: A flexible, stretchable, crush resistant hose particularly well suited for supplying breathing gases to patients in medical applications and the like has a helix defined by coils of thermoplastic material, and a web of thermoplastic material bonded or welded to adjacent ones of the coils, preferably along inner diameter portions of the surfaces of the coils. The web extends radially outwardly from between the adjacent coils to define a helical reverse-direction crease at a maximum outer diameter of the hose when the hose is in a normal minimal-length condition wherein the coils are situated side-by-side sandwiching portions of the web therebetween. The thermoplastic material of hose is stress relieved by an annealing process after the hose is formed, to enhance the flexibility of the hose and the ease with which the hose can be extended.

Abstract: A Method of Manufacture for reinforcing the inner tube of reinforced high pressure flexible hose. The method essentially places carbon fibre filaments running axially (longitudinally) with the hose in the first several layers of the built-up inner tube. The filaments are placed as near as possible to the inner wall of the inner tube so that the fibres do not interfere with the overall bending radius of the reinforced high pressure flexible hose. The strengthened inner tube is far more capable of meeting the new API (October 2006) temperature and flexibility (pulsation) standards for oil field equipment reinforced rubber hose.

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 present invention is directed to an improvement over the flexible composite tubing described in U.S. Pat. Nos. 6,491,779, 6,804,942, and 7,073,978, wherein said improvement provides for void space or otherwise insulating region along the length of the tubing. The present invention is additionally directed to methods for implementing such improvement.

Abstract: This invention relates to a hollow profile (1) used for the manufacture of a spirally wound double-walled thermoplastic pipe, which hollow profile has essentially a rectangular cross section and the wall (2) of the hollow profile intended to form the inner wall of the pipe is thicker than the wall (4) intended to form the outer wall (4) of the pipe. The invention is characterized in that the inner rounding radius (7a) of the edges adjacent to the thicker wall (2) of the hollow profile is considerably larger than the rounding radius (7) of the two other edges of the cavity (6).

Abstract: The invention relates to a flexible pipe for transporting hydrocarbons, comprising the following, from the inside towards the outside: a cylindrical structural set adapted in such a way that it can withstand radial stress and at least one first armure lap, said first armure lap comprising a plurality of armure threads wherein the armure threads consist of formed and flattened metal threads, the width of said armure I being greater than the thickness e when they are wound in parallel in the form of a spiral with a longitudinal pitch around the structure set, said threads forming an angle of less than 60° angle with the generators (G) of said structural set, and the width/thickness ratio of the armure threads is greater than 4.

Abstract: A method of forming a double film layered continuous conduit is disclosed. The method includes applying at least one film of ribbon spirally around a former where at least half of each turn of ribbon overlaps the next turn of the ribbon, such that the leading and trailing edges overlap. A bead of molten plastic is then applied between the overlap.

Abstract: A flexible HVAC duct is made with a support structure-containing duct liner, insulation layer, and reinforcing layer-containing vapor barrier. At least the duct liner and vapor barrier are constructed of polymer materials that enable them to be placed in the same recycling stream once the flexible HVAC duct is removed from its installed location. The insulation layer can also be made of a polymer material compatible with that used for the duct liner and vapor barrier so that the entire duct can be recycled once removed.

Abstract: A hose comprising a tubular body of flexible material arranged between an inner and an outer helically wound wire. The hose further comprises an elongate member having opposing longitudinal edges, the elongate member being helically wound around the tubular body such that the opposing longitudinal edges of the layer are in an adjacent or overlapping arrangement, wherein each longitudinal edge includes a formation capable of interengaging with a cooperating formation on the opposing longitudinal edge, wherein the elongate member is provided at least one reinforcing member which extends along the longitudinal axis of the elongate member.

Abstract: Modified-profile metal strips, and annular and spiral metal pipes and other products formed from such strips. The strips comprise a plurality of spaced longitudinal ribs of size and transverse location selected to increase the strength of a given thickness or gauge of the strip and the associated strength of a product formed from the strip.

Abstract: The present invention provides a hose for transporting material from one destination to another and a method of constructing a hose. According to an exemplary embodiment, the hose may be constructed with two helical coils wound in opposing directions and multiple layers. The hose construction may provide a flexible hose with walls that resist kinking and rupture.

Abstract: A hose (10) comprising a tubular body (12) of flexible material arranged between an inner and an outer helically wound wire (22, 24). The hose (10) further comprises an elongate member having opposing longitudinal edges, the elongate member being helically wound around the tubular body such that the opposing longitudinal edges of the layer are in an adjacent or overlapping arrangement, wherein each longitudinal edge includes a formation capable of interengaging with a cooperating formation on the opposing longitudinal edge.

Abstract: A composite strip (10) windable to form a helical pipe for transporting fluid is disclosed. The composite strip comprises: an elongate plastic strip (11) having a base portion (12), the base portion (12) having an upper side defining an outer face (15); and at least one lengthwise extending composite rib portion (20) upstanding from the outer face (15) of the base portion (12). The rib portion (20) has a distal end (23) remote from the base portion (12). The composite rib portion comprises: an elongate inboard reinforcing member (30) disposed within or adjacent to the base portion (12); an elongate outboard reinforcing (40) member disposed within the distal end (20) of the rib portion (20) parallel to the inboard reinforcing member (30); and an elongate intermediate plastic web (23) portion extending between the inboard and outboard reinforcing members (30, 40). When wound into a helical pipe, the composite rib portion (20) reinforces the pipe against radial crushing loads.

Abstract: A flexible cable may include an elongated shaped strip helically wound around itself to form a generally tubular body having at least one interior passageway and at least one conductor at least partially disposed within the interior passageway. The elongated shaped strip may include a non-rectangular cross-sectional thickness having a central portion disposed between a first and a second end portion. The first and second end portions may extend generally outwardly from the central portion from generally opposite sides. At least a portion of the central portion may include a cross-sectional thickness TC which is less than a maximum cross-sectional thickness TM of the elongated shaped strip. The first and second end portions may include a first and a second cross-section thickness TS1, TS2, respectively, wherein at least one of the first and second cross-section thicknesses TS1, TS2 is greater than the cross-sectional thickness TC.

Abstract: A method of fabricating a flexible pipe for conveyance of fluid, comprising: winding at least one metal element in a short pitch helix around an inner sealing sheath for withstanding radial forces in the inner sealing sheath; preshaping a metal strip to form at least one ply of tensile armor tendons; winding the ply of tensile armor tendons in a long pitch helix around the at least one metal element; and applying an external protective sealing sheath around the at least one ply of tensile armor tendons.

Abstract: A tube having enhanced inner diameter stiffness is provided. The tube includes a wall having an inner zone, intermediate zone, and an outer zone. The intermediate zone includes a plurality of partially offset and overlapped plies that form a number of non-radial spokes and voids extending from the inner zone and the outer zone. The non-radial spokes of the tube facilitate the transmission of torque from the inner zone to the outer zone during winding and handling operations, while insulating the inner diameter from radial pressure on the outer zone. The spokes and voids may essentially extend around the entire circumference and length of the tube and thus provide for more consistent properties throughout the tube.

Abstract: A crush resistant and stay put hose is provided. There is a helical member having a plurality of coils and a wall surface of one or more thermoplastic polymer layers. The layers extend from one coil to the next and the wall surface between the coils has at least one living hinge. When one portion of the hose is in an extended condition, the hose remains in the extended condition without reverting to the unextended condition. Methods of making the hose are also disclosed.

Abstract: A method of fabricating a composite tubular member includes providing a mandrel having a central longitudinal axis and wrapping a plurality of composite fiber layers around said mandrel wherein the longitudinal axis thereof is oriented at a first angle with respect to the longitudinal axis of said mandrel. The composite tubular member produced does not have any longitudinal seams and is thus considerably stronger and more durable than prior art composite tubes.

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 comprises a wire having a wound structure to form transversely blocked coils. One of said two section wires is wound against said structure coils.

Abstract: A suction hose for vacuum cleaner includes a tubular inner part, a jacket part and a locking device. The inner part is variable in length and includes a hose wall having a coil spring integrated therein, the coil spring being configured to automatically return the inner part from an extended position to a shortened position. The jacket part is configured to completely receive the inner part when the inner part is in the shortened position, the jacket part including a tubular shape. The locking device is configured to fix the inner part, in the shortened position, in the jacket part. The locking device includes a tubular member configured to surround the inner part, the tubular member including a first part of a first snap-fit device configured to cooperate with the jacket part so as to connect the tubular member and the jacket part.

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: For a method for manufacturing a hollow shaft with at least one integral flange made of fiber composite, a plurality of intersecting windings of fiber material are applied onto a core. Moreover, the core has, for each flange, a radial spreader ring with an axial bearing surface. The windings are laid over an outer circumferential portion of the respective spreader ring and fixed. One or several inserts made of fiber material are inserted in the area of the spreader ring between the windings. The fixing of the wound fiber material is released, but is first still held on the spreader ring. Portions of the windings are then pulled off from the outer circumferential portion of the spreader ring and brought to rest on the axial bearing surface of the spreader ring in order to form a partial portion of a flange.

Abstract: A hose consisting of a smooth tubular wall and a rib wound spirally on the smooth tubular wall. The hose includes at least one duct portion and at least one connection portion; in the connection portions, the rib is wound spirally with a narrower pitch than on the duct portions.

Abstract: The object of the invention is thus a duct element made of a band-shaped strip (1) wound in a spiral form preferably forming an air-channel for air-handling systems wherein the edge surface of one side end and the reverse edge surface of the other side end overlap each other in an overlapping area (Y). The essence of the invention lies in that the material of the band-shaped strip (1) forming the duct element is a cross-linked polyolefin foam of closed cell-structure, and a reinforcing wire (2) is inserted in the overlapping area (Y).

Abstract: An elastically stretchable stretch hose (2) with a support spiral (4) acting as a tension spring and with a hose wall (6) connected with the support spiral (4) and consisting of a synthetic material, shall have a relatively low weight. Furthermore, it is desirable for various applications that the stretching force required for the extension is kept relatively low. For this purpose, the support spiral (4) is made, according to the invention, of a synthetic material.

Abstract: A new and improved power steering hose assembly is described, which may comprise a core hose layer, a first reinforcing layer, an intermediate hose layer, a second reinforcing layer and an outer hose layer. The first reinforcing layer has a braid pattern formed in a 1-over, 1-under pattern. The intermediate hose layer is positioned over the first reinforcing layer. The second reinforcing layer is disposed over the first reinforcing layer. The second reinforcing layer has a braid pattern formed in one of a 3-over, 3-under pattern or a 2-over, 2-under braid pattern. The outer hose layer is positioned over the second reinforcing layer.

Abstract: There is disclosed an animal-resistant irrigation tubing system. The animal-resistant irrigation tubing system may include a flexible tube disposed within a coil shield. The coil shield may have an inside diameter larger than an outside diameter of the flexible tube. The coil shield may be free to move radially, axially and rotationally about the flexible tube.

Abstract: The invention relates to piping comprising a portion wherein the centreline of the portion follows a substantially helical path, wherein the amplitude of the helix is less than or equal to one half of the internal diameter of the piping. When fluid flows in such piping, it is made to swirl. This provides a number of advantages, such as improved in-plane mixing of the fluid, enhanced uniformity of residence time, and so on. The invention also extends to various methods of making such piping.

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).