Abstract: Disclosed is an apparatus to preform wire into helical configurations wherein the wire will be used in flexible wire reinforced rubber hose. The apparatus includes a wire shaping mechanism that utilizes a grooved rotatable cylindrical preform roller which is capable of preforming a plurality of wires into a desired helical shape. Thereafter, the helically shaped wires are wound onto a motor driven windup creel.

Abstract: A process for the manufacture of flexible tubes including a main body of a rubber material and a reinforcing element of a hard resin material in which the reinforcing element is embedded at least partly in the main body in a form of helical coil and adjoined thereto to form an integral body of the flexible tube. The flexible tube is manufactured by helically winding a composite web of a rubber strip and a hard resin strip adjoined to each lateral side end of the rubber strip with the web being in a plastic condition so that a lateral end portion of the resin strip in the web of each turn is made to be in contact with and adjoined to that of the preceding turn.

Abstract: This invention relates to a duct forming machine strip material feeder alignment compensating system which permits the adjustment of strip material being fed to a mandrel for forming duct. The strip feeder material is fed from a reel mounted on an adjustable platform. The platform is supported by the machine frame for vertical adjustment by a crank operated lead screw. Horizontal and vertical angular compensating adjustments of the strip material feed system are provided by adjustments of a spool axle mounting plate. The axle mounting plate is horizontally and angularly adjustable to keep strip material being fed from a spool to the mandrel of the duct forming machine in proper alignment.

Abstract: To produce a vessel prosthesis, a hose (12) is wrapped with a reinforcing thread (13) to avoid bending and clogging of the vessel prosthesis. The reinforcing thread (13) is wound substantially tensionless on the soft hose (12) thus prohibiting wavy deformations inside the hose. To exclude prior to the solidification of the adhesive connection a displacement of the reinforcing thread (13) being bonded to the hose, a band-shaped spacer (14) is wound up together with the reinforcing thread (13) and removed subsequently.

Abstract: A flexible duct forming apparatus and method in which flexible strip material is wrapped on a rotating mandrel in a helical path, with the edges of the flexible strip material overlapping a pre-determined amount. Reinforcing wire is formed into a helix of substantially constant diameter and pitch and guided by a fixed helical means between the overlapping edges of the flexible strip material. The overlapping edges of the flexible strip material are then pressed around the reinforcing wire to seal and encapsulate the wire to continuously form flexible duct. The reinforcing wire is formed into the substantially constant helix by a fixed helical means which is interchangeably mounted on a base as is the mandrel, so that the apparatus can be used to manufacture different diameter flexible ducting.

Abstract: A flexible duct forming apparatus and method in which flexible strip material is wrapped on a rotating mandrel in a helical path, with the edges of the flexible strip material overlapping a pre-determined amount. Reinforcing wire is formed into a helix of substantially constant diameter and pitch and guided by a fixed helical means between the overlapping edges of the flexible strip material. The overlapping edges of the flexible strip material are then pressed around the reinforcing wire to seal and encapsulate the wire to continuously form flexible duct. The reinforcing wire is formed into the substantially constant helix by a fixed helical means which is interchangeably mounted on a base as is the mandrel, so that the apparatus can be used to manufacture different diameter flexible ducting.

Abstract: An apparatus for producing spirally wound thermoplastic pipe. The apparatus has a helical track and a series of independent moldblocks that run in the track to provide a mandrel surface that rotates and advances axially. A band of thermoplastic material is extruded onto the mandrel surface and wound on the surface in an overlapping helix. The apparatus is equipped with a moldblock return mechanism that receives blocks from the downstream end of the track and returns them to the upstream end, so that unlimited lengths of pipe can be produced.

Abstract: A device and method for producing a tube comprises a rotatable mandrel over which the tube is formed and an extruder alongside the mandrel having a nozzle which extrudes a supporting material having a hollow portion onto the mandrel at a selected angle in a manner to form a continuously helically wound strip on the mandrel as the mandrel is rotated and the mandrel and the extruder are moved relatively in respect to the longitudinal axis of the tube. A supply of a profiled material such as a tubular reinforcement is provided alongside the mandrel and advantageously comprises a reel supply over which the tube is wound and which is connected through a feeder in the form of upper and lower rollers which engage the profiled material and feed it through the extruder into association with the supporting material and into the hollow portion thereof.

Abstract: A flexible hose wherein the majority of the mass and the strength are located at the radially outermost portion of the hose. The hose is constructed by combining a relatively rigid radially outermost cap with a relatively flexible inner membrane.

Abstract: A semi-rigid collapsible air duct having helically biasing reinforcement element 24, enveloped between an inner skin and an outer skin with the reinforcement element in a uniform helical spacing enveloped by ultrasonic welds. The process for manufacturing the air duct includes feeding the inner duct wall skin onto a mandrel, feeding the helically biased reinforcement element onto the mandrel having a groove with a tighter helical shape over the inner duct wall skin, feeding the outer duct wall skin onto the mandrel over the reinforcement element, then passing that composite under an ultrasonic welder which welds the inner duct wall skin to the outer duct wall skin, enveloping one or more reinforcement elements in such a way as to leave the one or more reinforcement elements free to move within their respective envelopments to develope the maximum thrust to place the reinforcing elements in tension to prevent droop of the walls of the duct.

Abstract: In the forming of flexible tubing of at least one wire helix covered by a helically wrapped tape, an apparatus and method for making such tubing wherein an endless belt of a width a plurality of times the pitch of the wire helix is passed against a rotating mandrel surface to draw the wire helix and tape wrapping together.

Abstract: A method and apparatus for strengthening the core of an insulated flexible duct formed of a helical wire wrapped with a flexible material. Strengthening tape is applied to the surface of the duct along its entire length. The apparatus for applying the strengthening tape is a tray having adjustable wiping arms. The wiping arms stretch the duct out as it is pulled through the tray, testing bonds securing the material around a reinforcing coil of wire. A roll of tape is mounted adjacent to the wiper arms and is automatically applied as the duct is pulled along the tray through the wiper arms. At least two wiper arms and continuous strips of tape along the longitudinal surface of the duct core are preferred.

Abstract: A device for producing a helically wound tube comprises a rotating mandrel around which the tube is wound and an extruding device having an extruder head oriented to direct a continuous strip of plastic through a profile pressure mandrel which defines a calibrating guide channel which in turn is oriented to deposit the desired width of extruded plastic strip onto the mandrel. The guide channel advantageously includes walls defining a cooling passage for a coolant for example on the wall over which the extruded plastic is directed. The extruder and the guide channel are mounted on a carriage so that they may be shifted longitudinally if the axis of the mandrel apply a continuous strip of material thereover at a selected pitch angle. The extruder advantageously includes means for directing a reinforcing rod member into the extruder head so that the extruded strip includes a central tubular reinforcement with a base flange on each side of the reinforcement.

Abstract: A hose or pipe comprising a tubular layer formed by helically winding plastics material and/or rubber around a mandrel reinforced with a high tensile spring steel wire which is formed into a helix around and simultaneously with the winding of the tubular layer by positively driving the wire into engagement with coil-forming means, disposed around the tubular layer, which gives the wire a set and produces a wire helix having an internal diameter approximating the external diameter of the tubular layer, the wire being driven into the coil-forming means at a linear speed substantially equal to the speed of the surface of the helical path around the tubular layer against which the wire coil is to lie.

Abstract: The invention relates to a method and an apparatus for the manufacture of high-pressure hose composed of a plastic core and a plurality of layers of helically wound plastic-resisting members formed in particular of wires of high tensile strength which are rewound in a rewinding device from a supply reel onto several working spools, and optionally of an outer cover made of a plastic material. An intermediate layer of plastic yarn is disposed between every two helically wound pressure-resisting layers. After being unwound, the wires necessary for the helically wound pressure-resisting layers are precoiled over a hardened edge in the rewinding device and then wound onto the working spool in the stretched state. In accordance with the preferred embodiment, precoiling is done, not in a stranding machine, during hose production, but one stage earlier, in the rewinding device, where the individual wires are rewound from a supply reel onto so-called working spools.

Abstract: Flexible tubing formed of a wire helix wrapped helically with plastic tape having overlapping turns fused directly together ultrasonically, with no extraneous adhesive, and with knurling imprinted on the tubing interior, and apparatus and a method for making such tubing wherein a rotating cantilevered mandrel has a knurled anvil band over which overlapping edges of the tape pass to receive fusing vibrations from an adjacent ultrasonic horn.

Abstract: A flexible hose having resistance to radial crush is formed from a bonded and interlocked helically wound rod or strip of plastic co-extrusion. The co-extruded profile of the strip is defined by a pair of matable rib components which are joined by a web. The rib components are bonded, sealed and interlocked together at adjoining convolutions of the profile not only to form the hose but also to form a composite rib integrated into the hose for resisting radial crushing and axially directed deformation forces exerted on the hose. The composite rib is formed from a material having a hardness which is greater than that of at least a part of the web for rendering the rib with a relatively stiff bend resistance characteristic and the web with a relatively soft and flexible characteristic. The web itself may be a co-extrusion of two materials placed in series, or in parallel as a laminate, or a combination thereof.

Abstract: A method of continuously manufacturing a corrugated tube having a corrugated outer wall and a smooth inner wall surface along the length of the tube is provided which method comprises the steps of arranging in a circular array a plurality of rollers each rotating at the same speed such that an imaginary cylinder is defined about its central axis by said rollers, the longitudinal axes of said rollers being parallel to each other but offset with respect to said central axis; continuously feeding a flat non-reinforced strip of synthetic resin material in a softened state generally perpendicularly to the length of said rollers in such a manner that said strip is helically wrapped around and advanced axially along said imaginary cylinder with portions of adjacent turns of the strip overlapping one on another and welded together; continuously feeding a flexible core member and embedding it between the overlapping portions of adjacent turns of the strip to raise the upper one of said overlapping portions so as to de

Abstract: A flexible duct forming apparatus and method in which flexible strip material is wrapped on a rotating mandrel in a helical path, with the edges of the flexible strip material overlapping a pre-determined amount. Reinforcing wire is formed into a helix of substantially constant diameter and pitch and guided by a fixed helical means between the overlapping edges of the flexible strip material. The overlapping edges of the flexible strip material is then pressed around the reinforcing wire to seal and encapsulate the wire to continuously form flexible duct. The reinforcing wire is formed into the substantially constant helix by a fixed helical means which is interchangeably mounted on a base as is the mandrel, so that the apparatus can be used to manufacture different diameter flexible ducting.

Abstract: A method of making a flexible hose comprising a hose main body formed from a rubber strip wound into helical coils rigidly joined together and a linear reinforcement of rigid resin disposed in contact with the strip in a manner to have a thickness between the reinforcement and the inner surface of the helically wound strip. The reinforcement is bonded to the integral homogeneous rubber portion of the strip.

Abstract: A method and an apparatus for producing a tube from a strip of synthetic resin and/or unvulcanized rubber incorporating a vulcanizing agent by winding the strip on a former supported by a frame in the manner of a cantilever to shape the strip into a tubular body and heating the tubular body on the former by a heater while sending out the tubular body toward the free end of the former.

Abstract: The invention provides a hose that withstands a vacuum which is considered to be approximately two to three times greater than the vacuum withstood by the best known previously available pliable convoluted semirigid plastic hoses of comparable designs. To fabricate the hose, a bobbin of wire stock is unwound, with the wire preferably being pulled off the end of the bobbin. The wire is then looped around a spool to form it into a spiral or coil having a preset diameter which is proportionately smaller than the diameter of a preformed, semirigid convoluted plastic hose. While the pulled wire is still substantially extended, it is taken up by being rolled upon the plastic hose, thereby snapping the preset formed wire spiral into the spiral convolutions formed in the surface of the hose. If desired, the spiral or coil might be pulled off the end of the samller diameter spool to impart a twist thereto.

Abstract: A machine is shown for building a reenforced industrial hose for liquids and certain solids by wrapping a plurality of layers of different materials, including an uncured resin, on a rotating mandrel to form a laminated structure that may be cured in situ on the mandrel. The mandrel is rotated and a carriage moves alongside the mandrel to feed the several layers of materials forming the laminations onto the surface of the mandrel. The movement of the carriage is precisely coordinated with the rotation of the mandrel so that the edges of a resin or an uncured rubber strip and the steel wires forming the successive layers can be wrapped onto the mandrel, with the rubber strip material and the wires being laid on the mandrel in either a precise angle mode or an exact pitch mode.

Abstract: The hose, which is particularly adapted for use with an electrically-driven vacuum cleaning apparatus, comprises a substantially air-tight, flexible tube which is pneumatically coupled between the vacuum pump and the suction head. The suction hose comprises one or more elongated strips which is or are helically wound into tubular form. In a pair of parallelly placed strips, the strip margin of the first strip is secured to an adjacent margin of the second strip at adjoining convolutions of the strips. Electrical conductors are carried by the strips within helically extending cavities formed at the edges or margins of each of the strips and are a portion of that means which electrically couples the cleaning brush to the electrical power supply.

Abstract: The production of a reinforced tubular article employs a rotatable roller (1) and a fixed mandrel (3) which are spaced apart so as to define a nip (4) there-between. A strip (5) of reinforced polymeric material is fed through said nip and caused to wind helically around the mandrel (3) by the action of the rotatable roller (1), thereby forming a tubular article (7) the wall thickness of which is equal to size of the nip (4).A carrier strip (11) of low friction material may be provided to assist movement of the reinforcing strip (5) over the mandrel (3). Said movement may be further assisted by arranging the rotatable roller in skewed relation relative to the fixed mandrel.

Abstract: A first flexible strip is helically wound with adjacent edges of adjacent wraps in edge lapping relation, a forming or reinforcing element such as a wire is helically wound in overlying centered relation to lapping edges of the first strip and a second flexible strip is helically wound about the first strip covering and encasing the first strip and reinforcing wire, the second strip having adjacent edges of adjacent wraps in lapping relation symmetrically disposed in staggered relation to the lapping edges of the underlying first strip.

Abstract: A method and apparatus for continuously forming a reinforced, flexible duct or hose. The apparatus comprises an extruder for forming an elongated, flat strip of a polymeric material, a strip shaping means for shaping the flat strip to define a profiled strip, means for helically winding the profiled strip with adjoining turns having portions in overlapping relation, means for disposing a reinforcing wire in sandwiched relation between the overlapped strip portions, and means for bonding the overlapping portions.The method comprises the steps of extruding a continuous flat strip of a polymeric material, forming the flat strip to define a profiled strip, helically winding the profiled strip with overlapping adjoining turns, disposing a reinforcing wire in sanwiched relation between the overlapping portions, and bonding together the overlapping portions.

Abstract: A process and apparatus for making highly adhesive plastic top coatings, more particularly of polyurethane or thermoplastic polyester, on metallic substrates, particularly of braided or plaited wire layers, as pressure substrate, having an inner core of plastic, particularly a polymer of thermoplastic plastic, surrounded by the substrate, the plastic top coating being extruded in an extruder head onto the substrate, characterized in that the substrate having openings is prestressed then heated to approximately the temperature of the extrudate or the extruder head, so that there is generated in the inner core a radially directed prestress which forces at least part of the material thereof, while softening, through the openings in the substrate, and that thereafter a vacuum is created around the substrate or between the head and the flexible tube and that simultaneously with, or immediately after, the creation of the vacuum the top coating fusing intimately and/or bonding together with the material of the inner

Abstract: A flexible wire-reinforced polymeric hose and method of making same are provided wherein such hose has a tubular core comprising a first polymeric tube, a tubular fabric layer disposed against the first tube and defined by a helically wound knitted fabric ribbon, and a second polymeric tube disposed against the tubular fabric layer and defined by a helically wound polymeric tape with the first and second polymeric tubes cooperating with the said tubular fabric layer to define the tubular core and hose having improved flexibility yet being capable of withstanding high fluid pressures within the hose.

Abstract: A reinforced plastic pipe is produced by feeding a plastic tube along a feed path while directing a reinforcement strip into a path around a tube so as to wind it into spiral coils which are spaced radially outwardly of the tube and including subsequently pushing the coils in an axial direction while deflecting them inwardly to cause their diameters to be reduced so that they engage around the surface of the tube. The tube is advantageously fed directly from an extruder in a tacky state so that the reinforcement strip will be immediately bound to the surface when it is directed into engagement therewith. The apparatus for carrying out the method includes a thin tubular mandrel disposed around the tube which is formed by an extruder and a winding device is associated with a reel supply of the reinforcement strip so as to feed it around the mandrel.

Abstract: Elastomeric hose having relatively low thermal conductivity is provided comprising an outer tubular cover vulcanized to an inner tube, the outer cover being radially expanded and having a cellular or porous network formed therein. A braided or knitted reinforcing layer may be provided between the radially expanded cellular cover and the inner tube with the former being bonded or vulcanized to the latter through the interstices of the reinforcing layer. The elastomeric hose may be formed by a process wherein a first forming composition, including a thermosetable elastomer, is extruded to form an uncured inner tube which is then simultaneously introduced into a cross-head extruder with a second, separately prepared, forming composition including a thermosetable elastomer and a blowing agent.

Abstract: A composite drive shaft having a hollow tubular, multi-layered fiber reinforced plastic shaft portion (11) with a metallic sleeve (13) inserted in and bonded thereto at least at one end, said sleeve (13) having universal joint connector means (12).

Abstract: A flexible rubber hose has a spiral wound reinforcing core of resin bonded fibers embedded in the rubber, and a reinforcing insert, which may be woven or spiral wound, on the outer side of the helical core. The fibers are preferably glass fibers embedded in epoxy or phenolic resin.

Abstract: A method for the production of curved tubular elastomeric articles such as hose is described which uses a rigid, deformable mandrel. An uncured hose assembly is placed on the mandrel, and the assembly, including the mandrel, is deformed to a preselected curvilinear configuration, and then partially cured. The partially cured hose is straightened and the mandrel is removed. The partially cured hose is then returned to the curing chamber to complete the curing.

Abstract: A flexible plastic tube, comprises, an extruded inner tube or tubular portion and an extruded outer tube or tubular portion of a thermoplastic material overlying the inner tubular portion and spaced radially outwardly therefrom and including a reinforcing strip of substantially U-shape configuration wound around the inner portion and bonded to the inner and outer tubular portions. The reinforcing strip has radially extending sidewalls in the form of fins which define a first cavity therebetween and, in addition, successive turns of the reinforcing strip define a second cavity therebetween which is located between the outer and inner walls. The sidewalls advantageously have radially outwardly tapered cross-sectional shapes.

Abstract: Method of producing a continuous flexible tubular conduit having a plurality of helically wound reinforcing-electrical wires is provided wherein the apparatus has means for forming a plurality of wires into a corresponding plurality of substantially identical continuous non-rotating helical coils without entanglement of such wires and an extruder head for extruding a polymeric tube around the coils with the coil turns coaxially aligned and alternately arranged to complete the tubular conduit.

Abstract: A wire-reinforced hose is provided wherein such hose is defined of a helically wound strip which has at least one integral preformed convolution therein and a wire disposed in the convolution with the helical winding being such that the convolution with the wire disposed therewithin extends in a helical path along the length of the hose and the hose has a tubular inside surface with the helical wire concealed therewithin when viewing such tubular inside surface.

Abstract: The invention provides a hose that withstands a vacuum which is considered to be approximately two to three times greater than the vacuum withstood by the best known previously available pliable convoluted semirigid plastic hoses of comparable designs. To fabricate the hose, a bobbin of wire stock is unwound, with the wire preferably being pulled off the end of the bobbin. The wire is then looped around a spool to form it into a spiral or coil having a preset diameter which is proportionately smaller than the diameter of a preformed, semirigid convoluted plastic hose. While the pulled wire is still substantially extended, it is taken up by being rolled upon the plastic hose, thereby snapping the preset formed wire spiral into the spiral convolutions formed in the surface of the hose. If desired, the spiral or coil might be pulled off the end of the smaller diameter spool to impart a twist thereto.

Abstract: A hose construction and method of making same are provided wherein such hose construction is made primarily of combustible polymeric material and has a tubular inside surface defining a longitudinally extending passage for conveying a fluid therethrough and has an outside surface; and, the hose construction has at least one member which has a fire extinguishing material comprising same disposed adjacent one of the surfaces with the fire extinguishing material being activated upon subjecting the member to combustion temperatures.

Abstract: A method and apparatus for continuously manufacturing thin-walled flexible hoses having helical reinforcement members which are relatively strong in relation to the hose walls wherein an internal pressure is applied to the hose core to obviate the need for a manufacturing mandrel, and a plurality of turns of the reinforcement member are coiled onto a fixed tube through which the hose core passes and the successive comparatively unstressed turns of the reinforcement member are applied to the slightly expanding hose core at the tube exit by the application of an intermittent pressure in an axial direction against the respective last turn of the plurality of turns on the tube.

Abstract: Hydraulic circuits having flexible hydraulic hoses forming part of the circuits are currently being operated at pressures in excess of 3,000 psi, and such circuits are often limited in their operating pressure by the burst strength of the hydraulic hose. By constructing a hollow core structure that forms the conduit and which serves as the foundation upon which the reinforcing is applied, with a two-layer tape composed of a layer of fabric and a layer of elastomer, which tape is then wound on a mandrel in a helically overlapping relationship with the fabric on the outside, an improved hose can be obtained after the reinforcing is applied. An increase in burst strength can be obtained in such a hose where wire cable is employed as the reinforcing in place of monofilament wire reinforcing, when the cable is formed (twisted) as it is applied, to achieve a more uniform tension on each of the strands forming the cable encircling the core structure.

Abstract: A machine and method are provided employing an elongate mandrel supported at one end and unsupported at its opposite end and apparatus carried by the mandrel and being movable therealong between the opposite ends with the apparatus supporting material wound thereon to define a length of the tubular conduit and moving out of supporting relation once the conduit moves axially beyond the opposite end, and the mandrel comprises a fixed helical structure supported concentrically around a central part which is rotatable therewithin and with the helical structure defining a helical groove along the mandrel with a plurality of members defining the apparatus and being operatively connected to the central part and movable within the groove upon rotation of the central part with the members supporting material helically wound thereon and moving out of supporting relation by falling within the length of conduit at the opposite end.

Abstract: Apparatus for winding a helical reinforcement into a polymeric tube comprising a mandrel on which the tube is assembled, a gauge mandrel portion at one end to feed reinforcement material a driven guide eye to give the required pitch to the winding and a constant-path-length compensating device to lead the reinforcement from the gauge portion to the guide eye.

Abstract: A machine for winding continuous tape and wire to form a flexible endless duct, which duct is fed out of the winding station by a cluster of rolls, and which rolls also serve as a mandrel at the winding station. The rolls are cantilever mounted with circumaxially spaced individual roll axes arranged in a hexagonal pattern around a central duct forming axis. The axes of the rolls are adjustable radially toward and away from the central axis, and these roll axes are also collectively adjustable angularly, that is to skew their collective axes relative to the duct central axis. The duct is marked off in units of length by a device which is periodically operated through a revolution counting circuit, and the duct is also cut by devices operated from a branch of said counting circuit.

Abstract: A polymeric flexible hose construction and method of making same are provided wherein such hose construction comprises a tubular wall defining a main longitudinally extending passage for conveying a fluid therethrough and a second wall adjoining the tubular wall and defining a second longitudinally extending passage for an electrical conductor with the second wall having a wall portion common with the tubular wall.

Abstract: The present invention relates to an apparatus and method for making a flexible duct of wire-reinforced construction made from a plurality of adhesive-coated polymeric tapes. The tapes are simultaneously applied from angularly oppositely disposed directions in conjunction with application of a reinforcement wire to provide a helix construction with overlapping convoluted edges to provide a duct of predetermined length.

Abstract: A pushpull cable conduit is made by continuously moving a tubular mandrel through a crosshead extruding die, forming a tape of micro-porous polytetrafluoroethylene resin into cylindrical form covering the mandrel as it enters the extruding die, extruding an outer layer of fluid polymeric material over the cylindrical covering in the presence of heat, helically wrapping contiguous wires over said outer layer to form a wire layer, extruding an outer covering of thermoplastic material over the wire layer, and removing the tubular mandrel. The porosity of the polytetrafluoroethylene covering insures a good heat bond with the outer layer of fluid polymeric material and also provides a lubricant reservoir in its inner surface, thereby minimizing friction with the cable core and greatly reducing sound transmission.

Abstract: A hose construction having means for dissipating static electricity and method of making same are provided and such hose construction comprises a polymeric inner tubular layer, a braided layer disposed against the inner tubular layer and comprised of a plurality of filaments, and an electrically conductive layer made of carbonaceous particles overlying the braided layer and including particles dispersed between the filaments, the particles are disposed in overlapped relation in layer form and enable relative movement therebetween while maintaining electrical continuity to enable dissipation of the static electricity. The hose construction may comprise an additional braided layer disposed around the electrically conductive layer and sandwiching the electrically conductive layer between the braided layers as well as a protective layer disposed around the entire hose construction.

Abstract: A three-dimensional composite structure with integral reinforcing ribs. The ribs have a core to include spaced metal inserts that are positioned to accept load bearing fasteners. A lightweight reinforcing material fills the remainder of the core. An adhesive tape with continuous filament composite fibers encircle the rib. The ribs are positioned between an inner and outer shell of structurally reinforced plastic and wound circumferentially and laterally with continuous filament composite tape.

Abstract: The invention concerns a process for the manufacture of textile or wire-reinforced hoses, the components of which are placed while the inner tube is supported by a mandrel.According to this invention, the mandrel is made of a congealable fluid which is introduced inside the tube and then cooled and solidified during manufacturing steps wherein the formed assembly will resist mechanical stresses which would not be endured by the sole constituents of the hose. The mandrel is thereafter brought back to a liquid form to be drained off.The invention is applicable to the manufacture of medium and high pressure hoses.