Abstract: A blow-out guard is disclosed for use with high-pressure conduits. A double layer, wire sheath is fixedly attached over the end portion of the hose. If the hose should burst, the medium escapes through the interstices of the sheath and is thereby reduced to a dispersed effluent or a fine spray, thus protecting the operator.

Abstract: A braided-wire sheathing for high pressure hose or the like composed of interwoven bundles of high tensile strength wire. Within each bundle, the longer wires are twisted helically about the shorter wires such that all of the wires are under substantially equal tension. The interwoven bundles are grouped in pairs in a two-over, two-under pattern, the two bundles in each pair being twisted in opposing rotational directions.

Abstract: An automotive fuel hose comprising a two-ply rubber tube covered with a reinforcing fiber layer and further with a protective rubber layer. The two-ply rubber tube is constituted of a very thin inner layer of a fluorine rubber resistant to fuel, even to sour gasoline, and an outer layer of a synthetic rubber, such as epichlorohydrin rubber or ethylene-acrylic rubber, which is less resistant to sour gasoline but is superior in cold resistance. Both the inner and outer layers are formed by extrusion, preferably simultaneously.

Abstract: A hose end construction comprising a hose main body and a connection metal fitting secured to the end portion of said hose main body by means of a clamping ring and a ferrule circumferentially tightening the end portion of said hose main body to said connection metal fitting.

Abstract: This disclosure relates to a fireguard for protecting a hose or an assembly of a hose and fittings. The fireguard includes a layer or tube of a silicone compound which is positioned around the hose, and a metal shroud or sleeve which encloses the layer of silicone compound. The silicone compound and the shroud protect the hose at normal temperatures and for a short length of time at a high temperature. In the event the high temperature persists for a length of time, the silicone compound decomposes to a layer of silica ash, which is held in place between the shroud and the hose, and the ash forms an excellent heat insulation for an extended time. The shroud is preferably flexible so that the hose may be bent, and the fireguard preferably also includes another layer of the silicone compound and a collar around each hose fitting.

Abstract: A flexible reinforced hose for conveying fluid under pressure and comprising a polymeric core tube covered by two or more layers of stranded reinforcement. Each layer of reinforcement is of a material having a lower modulus of elasticity than the next radially outward layer of reinforcement so that each layer may more readily expand in diameter than the next outer layer due to elongation of the strands when the hose is subjected to fluid under pressure to thus cause the radial load imposed by the fluid pressure to be distributed more evenly among layers. Each layer may comprise first and second sets of oppositely helically wound strands that may be either interwoven to form a braid or a knit or wherein the second set is wound over the first set.

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: 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 chafe or fire sleeve for a hose is an integral coaxial structure having an inner layer of silicone and an outer layer of urethane in the range of 80%-20% urethane and 20%-80% silicone, respectively. The inner hose structure preferably comprises an elastomeric hose covered by braid, with the silicone bonded onto the braid. Five examples of materials are given, ranging from pure urethane to pure silicone and including three exemplary mixtures thereof. Pure urethane provides excellent antichafe, but not fire retardant, qualities; and pure silicone provides excellent fire retardant, but not necessarily as good antichafe, qualities. This particular invention is primarily directed to the fire retardant or fire resisting qualities of silicone, which is an ablative material that forms a refractory ash. The fire sleeve is an ablative material which tends to flake off the hose as it burns. This flaking is a disintegration of the hose which is one of the primary causes of the ultimate hose failure.

Abstract: A high pressure hose construction and method of and apparatus for making the same is disclosed wherein the hose construction has a smooth walled inner liner of resilient polymeric material, and an adhesive layer, which may also be of polymeric material bonded to the liner. A braided cover is disposed over the entire layer and embedded therein. This braided cover is comprised of a plurality of elongated intermeshing strands of non-metallic fibers, such as yarn, and metallic fibers. Preferably, every three strands are of flexible, non-metallic fibers, such as nylon fibers, and every fourth strand is of metallic fiber, such as piano wire or spring steel. One set of strands crosses over and under another set to produce an intermeshing or weaving effect. These strands may also extend in a direction at an angle, such as 45.degree. or 53.degree.

Abstract: A flexible reinforced cured resin hose is shown having a combination of helically wound cable wires and body wires embedded therein in layers in the wall forming the hose. Two plies of cable wires are wrapped in opposite directions around the periphery of a liner tube supported on a mandrel, the plies being supported in a resin filler layer applied over the liner to hold the wires spaced apart to prevent the wires from rubbing as the hose is flexed. The body wires are more widely spaced apart and are spaced from and wrapped over the layers of cable wires to be embedded in the resin filler layer. A breaker layer may be wrapped over the assembly, an outer layer of wear resistant neoprene is applied and then a nylon cure tape is applied over the entire assembly prior to curing. A nylon rope is also spiraled down the outside of the assembly to be positioned exactly midway between the spaced apart body wires and then the resin is cured under heat and pressure.

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: The invention relates to a hose of rubber or rubber-like elastic material adapted to convey pressurized medium and provided with a number of insulated, electrically conductive stranded metal wires embedded in the outer layer of the hose and contributing to its mechanical strength. Use of such a hose is desirable to transmit control signals or other electrical current from one end of the hose to the other by way of the stranded metal wires without obstructing the flexibility of the hose. An end connector means having a metal connector fitting, a shrunk-on sleeve in contact with the metal connector fitting, and a protective cover around the hose itself provides a means for joining the conducting hose to another flexible hose or suitable connecting member.

Abstract: A rigid plastic composite tube includes a first sleeve of helically braided metallic ribbons, a second sleeve engaged with the first sleeve either on the inside or outside thereof, the second sleeve being of helically braided fibrous strands, said sleeves being embedded in solid plastic material to form a unitary composite tubular structure.The method of this invention for fabricating such plastic composite tubes comprises the steps of braiding metallic ribbons and fibrous strands about an elongated form, conforming the ribbons to the shape of said form by tensioning the strands during the braiding thereof, impregnating the composite sleeve with liquid hardenable plastic, and then hardening the plastic thereby providing a solidified plastic composite sleeve.

Abstract: The reinforced flexible duct consists of a single- or double-ply reinforcing fabric, a wire helix, and a continuous extruded liner. The fabric, wire helix, and extruded liner are continuously helically wound on a mandrel. The freshly extruded liner adheres to itself, to the helically wound wire, and to the reinforcing fabric to form a continuous reinforced flexible duct. Optionally, a narrower continuously extruded and wound scuff strip can be wound over the wire helix.

Abstract: A chafe or fire sleeve for a hose is an integral coaxial structure having an inner layer of silicone and an outer layer of urethane in the range of 80%-20% urethane and 20%-80% silicone, respectively. The inner hose structure preferably comprises an elastomeric hose covered by braid, with the silicone bonded onto the braid.

Abstract: The noise emanating from a noise-generating source, such as a machine tool or a stock tube, is reduced by covering the surface from or through which the noise emanates with a cladding comprising a first layer, an intermediate layer, and an outer layer. The first layer, 1 to 5 mm thick, of a resilient vibration-isolating material, being plastic foam, rubber foam, rubber, or fibrous material, has the function of decoupling the intermediate layer from the surface. The intermediate layer, 0.25 to 2.5 mm thick, of lead or metal-loaded plastic material in contact with and supported by the first layer, has the function of a sound-insulating barrier. The outer layer, resistant to impact, wear, and abrasion, has the function of surface protection. The total thickness of the three layers need be no more than 6 mm.

Abstract: A hose for connecting a sanitary appliance, such as a lavatory supplied with water, to the distribution network, this connection hose being constituted by a tubular core made of supple elastomeric material, an outer protective sheath formed of braided metallic wire, and two couplings secured at the end of said hose for connection by one end to said appliance and by the other end said distribution network, in which said elastomeric core is prepared according to the following formula:Ethylene propylene copolymer resin: 20 to 30%Paraffin-oil: 20 to 40%Carbon black: 40 to 60%And said sheath is constituted by a braid of strands of stainless steel wires, each strand comprising between 3 and 8 parallel wires, the strands forming intersecting helices, each strand following a line forming an angle comprised between 35.congruent. and 50.degree. with respect to the axis of said hose, the strands surrounding the elastomeric core without discontinuity, ensuring a continuous coating around said elastomeric core.

Abstract: An irradiated polyethylene tube is supported on a mandrel with adhesive material applied against its outside surface whereupon a first tubular layer is braided against the adhesive means followed by a tubular layer of neoprene rubber followed by braiding a second tubular layer against the neoprene rubber to define an assembly which is subjected to a controlled temperature environment to simultaneously vulcanize the rubber and bond the tube and tubular layers together defining the hose construction as a unitary structure.

Abstract: A technique for producing flexible tubing for use in hydraulic systems employing non-combustible, force-transmitting liquids is described. An inner layer of the tube is formed from a load-carrying metal insert embedded in polychloroprene or natural rubber, which forms a good bond therewith. The exterior, liquid-contacting layers of the tube are formed from ethylene-propylene-terpolymer (EPDM) rubber, which withstands penetration by the hydraulic liquid. A good bond between the interior and exterior layers is provided by an intermediate layer formed from an EPDM-polychloroprene or EPDM-natural rubber mixture, the EPDM constituent being present in a proportion of about 50-80%. The transition layer may be embedded with a polymer-impregnated textile, either of cotton or of a synthetic substance such as rayon, polyamide or polyester.

Abstract: An artificial blood conduit comprises two concentrically associated tubes. Convolutions in the tube walls provide flexibility and reduce the tendency to kink. The inner tube is porous to promote the growth of a stable biological interface. The outer tube is impervious to prevent contamination of the blood in locations external to the host body. Rigid reinforcing rings located between the two tubes and affixed to the outer tube, provide the conduit with strength to resist collapse from a wide variety of stress forces. A Dacron cloth sewn tightly around the exterior of the conduit allows tissue fixation without puncturing the conduit. End connectors are provided for different types of anastomoses.

Abstract: Tubular articles and the like and methods of making the same are disclosed, the tubular article being of desired tortuous shape, strong and rigid, free from porosity, light in weight, resistant to high and low temperatures with outerskin layers to improve fluid conveying and storage characteristics for example an exterior metallic foil or mesh lamina or skin of heat reflective and dispersive qualities and suitable for electric resistance heating if desired. The article is formed in a mold with an inflatable mandrel which carries a surrounding knitted fabric resin carrying component and with an exterior lamina or skin which is applied in the mold for subsequent integration in the article by matrix curing.

Abstract: An infrared receiver having a thermal conductive device for providing continuous thermal contact between a detector cooling means and an IR detector is disclosed. The thermal conductive device is bellows shaped and constructed from laminated layers of copper, nickel and copper or other suitable materials having the necessary thermal conductivity and elasticity at operating temperatures.

Abstract: A method of constructing a finished hose that includes a synthetic rubber core tube, comprising extruding the tube over a mandrel, completely curing the tube, applying a bonding agent to the tube, and applying reinforcement and covering over the tube so that it becomes bonded thereto, and removing the mandrel, whereby only the synthetic rubber core tube is subjected to the curing process.

Abstract: A plurality of cryogenic envelope sections are joined together to form a power transmission line. Each of the sections is comprised of inner and outer tubes having multilayer metalized plastic spirally wrapped within a vacuum chamber formed between the inner and outer tubes. A refrigeration tube traverses the vacuum chamber, but exits one section and enters another through thermal standoffs for reducing heat-leak from the outer tube to the refrigeration tube. The refrigeration tube passes through a spirally wrapped shield within each section's vacuum chamber in a manner so that the refrigeration tube is in close thermal contact with the shield, but is nevertheless slideable with respect thereto.

Abstract: The specification describes a linear fluidic actuator comprising a plurality of expansible tubes or tubular envelopes closed at opposite ends and coupled in a chain and arranged to have one end of the chain anchored while the other end is adapted to move and exert a tensile force upon inflation of one or more of the tubes, as by compressed air, into a circular diameter, in accordance with the degree of contraction of the chain of tubes. A variation of the actuator utilizes the contracting force of the chain of tubes to effect compression of one or more caged springs, the compressive force of which is illustratively shown and described as actuating a floating member to operate a valve device of the gate or plug type. Also disclosed are modifications utilizing a plurality of parallel-related chains of tubes and tubes expansible to different diameters for utilizing different inflating pressures.