Abstract: A life raft storage and inflation assembly, or system (12) of a type having a deflated life raft (22) stored in a separable canister (14) includes a hose assembly (34, 34') which can be broken down for coupling a selectively activated nozzle of a compressed-gas cylinder (24, 24') to an inlet cock (32, 32') of the deflated life raft. The hose assembly is comprised of a thermo-plastic hose (36); two brass sockets (38) which thread onto an outer surface of the hose; and two coupling fittings, a male life raft coupling fitting and a female cylinder coupling fitting. Each of these coupling fittings has a threaded nipple (52) on one end. These nipples are screwed through ends (48) of the sockets into the interior of the hose. Couplings at the other ends of these coupling fittings are designed differently. A female, or cylinder, coupling (60) of the female coupling fitting has female threads (82) that mate with a male nipple on the gas cylinder.

Abstract: High performance hoses are disclosed which are characterized by enhanced heat resistance, leading to prolonged service life, and hence are suitable for use in automobile power steering units. Inner tubes are formed of hydrogenated acrylonitrile/butadiene copolymer rubbers of a selected composition. The inner tubes may be of a double-layered construction composed of an inner layer of hydrogenated acrylonitrile/butadiene copolymer rubber and an outer layer of rubber composition which comprises specified amounts of a selected class of sulfurs, organic peroxide and triazine compounds combined with selected sulfur-curable base rubbers.

Abstract: An elongate flexible vacuum tube including an inner porous liner of intertwined flexible fibers of nylon or the like connectable between a vacuum source and the interior of a flexible vacuum bag covering a part formed of uncured thermosetting resin, or of superposed sections or laminae with thermosetting adhesive therebetween, under an overlying porous breather pad of intertwined fibers. An end of the liner can be positioned in intimate contact with the breather pad to form a vacuum path therewith so that a vacuum can be pulled on the part from a vacuum source, through the porous liner and breather pad, while it is being cured in an autoclave.

Abstract: A composite plastic duct structure comprised of an outer layer of fabric material impregnated with a fire-resistant resin material and an inner liner layer of chemically corrosion resistant resin material impregnated with a fabric material. The invention includes a method wherein multiple wrappings of resin impregnated material are wound on a mandrel to form the inner and outer layers.

Abstract: A multi-layer tube suitable for use on motor vehicles composed of a cylindrical wall having an outer surface, and an inner surface essentially parallel to the outer surface. The cylindrical wall has a first region having an essentially uniform cross-sectional diameter and a second region which has a cross-sectional diameter differing from the essentially uniform cross-sectional diameter of the first region. The second region has at least one convolution contiguously adjacent to the cylindrical wall of the first region.

Abstract: An improved battery refill system for filling and maintaining a number of interconnected battery cells at a predetermined level with liquid provided by an external liquid supply. The refill system includes a number of refill valves, each associated with a single battery cell, and a main supply valve which connects the battery cells to the liquid supply. Tubing is provided for connecting the battery cells in a chain or serial relationship. The tubing is fabricated from a plymeric material which, over an operating temperature range of between about -20.degree. F. and 200.degree. F., is substantially free of plasticizer bleed. The tubing is also sufficiently conformable and resilient over its service temperature range so as to remain in leak-tight engagement on both the barbed fittings and the compression fittings found in conventional battery watering systems.

Abstract: A flexible hose construction and method of making the same are provided, the flexible hose construction comprising an inner corrugated hose made of polymeric material and having a plurality of outwardly convex projections with recesses therebetween and extending from one end thereof to the other end thereof, an outer sleeve of reinforcing material disposed in telescoping relation on the inner hose, and stiff polymeric material disposed between the sleeve of reinforcing material and the inner corrugated hose and having an outer peripheral surface arrangement that is substantially straight-line smooth and continuous between each pair of adjacent projections and substantially coplanar with the apexes of the projections and having an inner peripheral surface arrangement that substantially mates with and is disposed in engagement with the projections and the recesses from the one end to the other end of the inner corrugated hose.

Abstract: A refrigerant transporting hose having a laminar structure including an inner tube consisting of at least one layer, an outer tube disposed radially outwardly of and coaxially with the inner tube, and a reinforcing fiber layer interposed between the inner and outer tubes. The inner tube includes a resin layer formed of a resin composition which consists of a blend of modified polyolefin and polyamide resin, and 1-10% by weight of .epsilon.-caprolactam. A proportion by weight of the modified polyolefin to the polyamide resin is selected within a range between 40/60 and 10/90. The hose may have a sealing layer formed on the inner surface of the inner tube. The sealing layer consists of a chlorinated elastomer containing a dispersion of an acid receptive agent. Alternately, the sealing layer may be provided on the outer surface of a hose connector nipple.

Abstract: A flexible hose construction and method of making the same are provided, the flexible hose construction comprising an inner corrugated hose made of polymeric material and having a plurality of outwardly convex projections with recesses therebetween and extending from one end thereof to the other end thereof, an outer sleeve of reinforcing material disposed in telescoping relation on the inner hose, and a tube of polymeric material disposed between the sleeve of reinforcing material and the inner hose and extending in a generally straight-line manner from projection to projection of the inner hose so as to tend to prevent the sleeve of reinforcing material from entering into the recesses of the inner hose an amount that would tend to substantially reduce the flexibility characteristics of the inner hose.

Abstract: A catheter comprises a flexible, plastic catheter shaft which carries an embedded fibrous, tubular reinforcement member typically of the braided type. The catheter shaft defines a first section which comprises a first plastic material and a second section abutting the first section which comprises a second plastic material having different physical properties from the first plastic material. The tubular reinforcement member comprises integral fibers that extend between, and are embedded in, the plastic of the first and second sections of the catheter shaft. Thus, the two different sections of the catheter shaft can have different physical properties while being reliably and permanently secured together not only by any bond present between the plastic portions but also because of the integral fibers extending between the two portions. Such a catheter may be made by threading preformed plastic catheter sections about the fibrous tubular reinforcement member and fusing.

Abstract: Process for making coiled brake Tubing for truck/trailer rigs formed of a blend of polyolefin materials.

Abstract: A refrigerant-transport hose having an inner tube, an outer tube located radially outwardly of the inner tube, and a reinforcing fiber layer interposed between the inner and outer tubes, the reinforcing fiber layer and the inner and outer tubes providing an integral tubular body, and inner tube including a gas-impermeable resinous layer formed of a composition containing a polyamide resin produced by reaction of hexamethylene diamine and an aliphatic dicarboxylic acid having eight to sixteen carbon atoms.

Abstract: Cold impact-resistant tubing especially useful as a fuel line for motor vehicles which is stable in length, has a brief thermal overload capacity, and consists of at least three layers of at least two different mutually compatible polyamides. The tubing also preferably has an internal and an external layer of impact resistance-modified polyamide, with or without a plasticizer, and a barrier between the layers of impact resistance modifier-free homopolyamide, copolyamide or blends thereof.

Abstract: A flexible coaxial conduit in a recirculating paint supply system disposed between a flow control restrictor connected to a paint spray nozzle and a pressurized paint supply line and return line for supplying paint to the nozzle in a quantity in excess of that required to insure continued recirculation and uniformity in the composition and quality of the liquid coating composition. The coaxial conduit is substantially transparent and in the preferred embodiments, the outer tube is of a composite construction to provide optimum flexibility while retaining resistivity to the attack from the liquid paint composition and from solvents.

Abstract: The present invention provides a CFRP-made optical cylinder comprising (a) CFRP layers containing a carbon fiber arranged in a direction substantially parallel to the cylinder axial direction and (b) CFRP layers containing a carbon fiber arranged in a direction nearly orthogonal to the cylinder axial direction, in which cylinder the carbon fiber arranged in a direction substantially parallel to the cylinder axial direction has a minus thermal expansion coefficient and the cylinder axial direction has a thermal expansion coefficient of -0.5.times.10.sup.-6 /.degree.C. to 0.5.times.10.sup.-6 /.degree.C. In the present optical cylinder, a sharp image can be maintained without making the correction of the optical axis even when the atmospheric temperature changes largely.

Abstract: A fire-proofing protective covering for an elongate structure such as a hose, an electrical or optical cable, or pneumatic or hydraulic ducting, comprises: a first plurality of layers made of an inorganic material having a structure which is suitable for imprisoning air while still allowing the operation of the elongate structure to be maintained at relatively high temperatures, of the order of at least 850.degree. C., and for a given length of time, of the order of at least several minutes, and a second plurality of layers, with each of the layers being disposed alternately relative to each of the layers of the first plurality so that the layers of the first plurality are on the inside while the layers of the second plurality are made of a material which substantially constitutes a barrier for the air imprisoned in the corresponding layer of the first plurality. The invention is applicable to the opto-electrical industry, to the hydraulic industry, etc. . . . for protecting ducting from fire.

Abstract: A layered tubing for use in a motor vehicle has a thick tubular outer layer formed of a Nylon 11 or Nylon 12, a thin tubular inner solvent-blocking layer inside the outer layer and formed of a copolymer of ethylene and vinylalcohol, and a tubular intermediate layer between and bonded to the inner and outer layers and formed of polyethylene or polypropylene. The outer layer has a thickness of between 0.2 mm and 0.7 mm and the intermediate layer comprises by weight 30% to 45% polyethylene. The inner layer has a thickness of between 0.1 mm and 0.2 mm and the intermediate layer has a thickness of between 0.05 mm and 0.2 mm.

Abstract: A lining material adapted for lining the inner surface of pipelines for transferring various kinds of fluids such as city water, sewage, city gases and petroleum, etc., characterized in that low elongation high tensile strength filament yarns are used as wefts (5), (16) forming tubular textile jackets (2), (6) laid in the lining material or as the yarns (12) forming a tubular fibrous member (13) together with a tubular textile jacket (2'). This characteristic feature provides excellent performance required for lining materials for pipelines such as enhanced earthquake resistance and shape retaining property against external pressures and limited expansion in diameter.

Abstract: A hose is disclosed which is characterized by enhanced durability against severe pressure and temperature conditions and by improved coupler attachment without bulging. The hose has a multi-layered inner tube including an inner wall and an outer wall formed respectively of a selected class of rubbers. Both walls are so structured as to satisfy specified modulus and thickness characteristics.

Abstract: A flexible hose construction and method of making the same are provided, the flexible hose construction comprising an inner corrugated hose made of polymeric material and having a plurality of outwardly convex projections with recesses therebetween and extending from one end thereof to the other end thereof, an outer sleeve of reinforcing material disposed in telescoping relation on the inner hose, and a tube of polymeric material disposed between the sleeve of reinforcing material and the inner hose and extending in a generally straight-line manner from projection to projection of the inner hose so as to tend to prevent the sleeve of reinforcing material from entering into the recesses of the inner hose an amount that would tend to substantially reduce the flexibility characteristics of the inner hose.

Abstract: A method of making a lightweight hose assembly including a step of extruding the inner liner. A nonmetallic material is then braided about the exterior of the liner. The inner liner and braided layer are then passed through a reservoir containing a solution of the fluorocarbon polymer. The solvent is then removed, leaving a fluorocarbon polymer coating dispersed throughout the braided layer.

Abstract: A flexible hose construction and method of making the same are provided, the flexible hose construction comprising an inner corrugated hose made of polymeric material and having a plurality of outwardly facing convex projections with outwardly facing recesses therebetween and extending from one end thereof to the other end thereof, the inner hose having a plurality of inwardly facing convex projections with inwardly facing recesses therebetween and extending from the one end thereof to the other end thereof, an outer sleeve of reinforcing material disposed in telescoping relation on the inner hose, a first tube of polymeric material disposed between the sleeve of reinforcing material and the inner hose and having an inner peripheral surface engaging the outwardly facing convex projections in a generally straight-line manner from the one end thereof to the other end thereof so as to tend to prevent the sleeve of reinforcing material from entering into the outwardly facing recesses of the inner hose an amount t

Abstract: A lightweight hose assembly of the type adapted for carrying fuels and other corrosive fluids. The assembly (10) includes a tubular member (11) and a pair of coupling members (20). The tubular member (11) includes an inner liner (12) of a fluorocarbon polymer. A glass fiber is braided about the exterior of the inner liner (12) to form a braided layer (13). The assembly (10) further includes an outer fluorocarbon coating (14) dispersed throughout the braided layer (13) for preventing kinking or permanent deformation of the inner liner (12). A conductive strip (16) is formed on the inner liner (12) for dissipating electrical charges accumulated in the inner liner (12). A method of making the assembly (10) comprises the steps of extruding the inner liner (12). A nonmetallic material (13) is then braided about the exterior of the liner (12). The inner liner (12) and braided layer (13) are then passed through a reservoir containing a solution of the fluorocarbon polymer.

Abstract: A hose construction for conveying water under pressure, a stem therefor and methods of making the same are provided, the hose construction comprising a flexible tubular hose having opposed ends, a metallic stem having opposed ends and having one of the ends thereof disposed in one of the ends of the hose, and a metallic tubular ferrule telescoped on the one end of the hose and being radially inwardly crimped toward the stem to compress the end of the hose between the ferrule and the stem, the one end of the stem having a plurality of annular spaced apart projections thereon and respectively having external peripheral surfaces embedded into the one end of the hose, the stem having an opening passing therethrough and defining an internal peripheral surface thereof, the one end of the stem terminating at an end edge thereof that is defined by the internal peripheral surface joining with the external peripheral surface of an adjacent annular projection the end edge defining a relatively large rounded end part on

Abstract: The tube, composed of a structural portion (1) of composite fibers encapsulated with thermosetting matrixes playing the part of a binder and obtained by filament winding, is provided with at least one inner coating (2) of a fibrous composite material impregnated with a thermoplastic binder, which is directly adjacent to the tubular portion formed by the structural portion (1) with the thermosetting binder.Application to oil production tubings.

Abstract: A flexible hose construction and method of making the same are provided, the flexible hose construction comprising an inner corrugated hose made of polymeric material and having a plurality of outwardly convex projections with recesses therebetween and extending from one end thereof to the other end thereof, an outer sleeve of reinforcing material disposed in telescoping relation on the inner hose, and a tube of polymeric material disposed between the sleeve of reinforcing material and the inner hose and extending in a generally straight-line manner from projection to projection of the inner hose so as to tend to prevent the sleeve of reinforcing material from entering into the recesses of the inner hose an amount that would end to substantially reduce the flexibility characteristics of the inner hose.

Abstract: A refrigerant transporting hose including a polyamide resin innermost layer, at least one intermediate rubber layer positioned radially outwardly of the innermost layer, a reinforcing fiber layer positioned radially outwardly of the intermediate rubber layer or layers, an outer tube which is positioned radially outwardly of the fiber layer and has at least one layer including an outermost layer, and at least one phenolic resin layer formed of a phenolic resin and having a total thickness within a range of 5-100 .mu.m. Each phenolic resin layer is provided at a corresponding one of interfaces between adjacent layers which are selected from the innermost layer, the intermediate layer or layers, the fiber layer and the layer or layers of the outer tube.

Abstract: A lining material adapted for lining the inner surface of pipelines for transferring various kinds of fluids such as city water, sewage, city gases and petroleum, etc., is characterized in that low elongation high tensile strength filament yarns are used as wefts forming tubular textile jackets laid in the lining material, or as the yarns forming a tubular fibrous member together with a tubular textile jacket. This characteristic feature provides enhanced earthquake resistance and shape retaining property against external pressures and limited expansion in diameter.

Abstract: A kink-resistant, small bend radius hose has a thin layer polyfluorocarbon liner tube with a thickness in the range of from about 0.005 inches to about 0.025 inches. The exterior of the liner tube is etched to allow silicone to be bonded thereto. A thin layer of silicone is bonded to the etched exterior of the liner tube. This layer of silicone serves as a bonding layer for a reinforcing layer of synthetic fabric, a helix strand and a cover layer. The reinforcing layer serves to strengthen the thin liner tube, the helix strand serves to support the hose against kinking and the cover layer adds additional strength and contains the helix strand with respect to the reinforcing fabric. Thus, a composite, integral, kink-resistant, small bend radius hose is achieved.

Abstract: A duct for aircraft use which has ease of use and will resist degradation over time. Silicone impregnated cloth is supported by a nylon helix and covered with a protective braiding of KEVLAR.RTM., a commonly used polyamide fiber. The resulting tube can be strung through tight openings. The duct is equipped with a flexible flange for secure engagement. The flexible flange can be collapsed to reduce the cross sectional area for fitting through narrow openings.

Abstract: Provided is a flexible reinforced hose (50) having an inner core tube (2) for conveying fluids surrounded by two layers of tensioned fibrous reinforcement layer (4, 8) between which is disposed a spirally wound flexible polymeric tape (6) which is unbonded to either of the reinforcement layers and free to move relative thereto under flexing and pressure pulsing conditions and which is adapted to prevent moisture from pentrating core tube (2) from outside of hose (50). Other preferred embodiments include hose (60) in which a flexible polymeric tape (12) is applied longitudinally and hose (70) where the tape is a flexible polymeric metal composite tape (20) as well as hose (32) in which the reinforcement layers (32, 36) are oppositely helically wound.

Abstract: A fixed-length fuel line, for automotive vehicles to be powered by an alcohol-containing fuel such as gasohol, has a relatively thick polyamide wall which is internally lined by a polyvinyl alcohol based alcohol-barrier layer protected against the fuel by a water-barrier layer, e.g. of polyamide, the line being constructed so that swelling of the water-barrier layer does not change the length of the line because any swelling stress is taken up by the thicker polyamide wall.

Abstract: A flexible hosing for circulation of a heat transfer fluid to effect heat exchange within a concrete or other type of slab. An inner wall comprising nylon, rayon or other similar material forms an inner wall of the hosing to resist corrosive attack by the heat transfer fluid. A locator wire is embedded within the hosing for transmission of a locating signal so that the position of the hosing within the slab may be accurately determined. The wire may also serve as an electrical resistance heating element should the heat transfer fluid become frozen, or should it be desired that the heat exchange system be operated without an external boiler or other heat source.

Abstract: A refrigerant transporting hose having an inner tube, an outer tube located radially outwardly of the inner tube, and a reinforcing fiber layer interposed between the inner and outer tubes, such that the reinforcing fiber layer and the inner and outer tubes constitute an integral tubular body, the inner tube including a resinous layer formed of a composition containing as a major constituent thereof a blend of at least one aliphatic polyamide and at least one aromatic polyamide.

Abstract: A flexible, impermeable textile fabric tube is coated with a first polymeric layer which is opaque and to which is applied a second polymeric layer containing metal particles, preferably of good thermal reflectivity. The second layer is clear, or at least translucent, in the absence of metal particles.

Abstract: Insulation sleeving, such as for providing thermal and/or electrical insulation for cables and cable connections, of the type comprising an inner sleeve of woven synthetic organic or inorganic fiber, such as fiberglass, and an outer coating of silicone elastomer. The woven fiber of the inner sleeve has a substantially open weave, i.e., the number of picks per centimeter is in the range of between about 2 and 9, andthe silicone elastomer of the outer coating has a reduced modulus of elasticity, such as between about 0.5 and 3.5 MPa at 100 percent elongation, and an increased tear strength, such as between about 5 and 45 KN/m. Insulation sleeving is elastically expandable to an extent such that its diameter can be increased up to twice its original unexpanded dimension without materially affecting the thermal, electrical and mechanical insulation properties of the sleeving thereby enabling a standard sized sleeving, i.e.

Abstract: A refrigerant-transporting hose including an elastic tube through which a refrigerant is transported, the elastic tube including a tubular resinous layer formed of a resinous composition, the resinous composition containing as a major component thereof a polyamide resin produced by reaction of hexamethylene diamine and an aliphatic dicarboxylic acid compound having from eight to sixteen carbon atoms. The resinous composition may contain as a major component thereof a mixture of saponified ethylene-vinyl acetate copolymer and a polyamide resin produced by reaction of hexamethylene diamine and an aliphatic dicarboxylic acid compound having from eight to sixteen carbon atoms.

Abstract: A reinforced hose including an inner pipe layer, an intermediate reinforcing layer and an outer pipe layer, each of the inner and outer pipe layers being made of synthetic rubber having a polarity at least at the surface thereof which contacts the intermediate reinforcing layer. The intermediate reinforcing layer is coated with nitrile rubber or a blended material of nitrile rubber and a high-molecular material.

Abstract: A high performance composite hose having enhanced durability, reliability and longevity for use in high pressure, high temperature and/or vibrational environments such as turbocharged truck, bus, automobile, marine and generating engines. The composite hose comprises one or more plies of balanced fabric having a high performance elastomer adhered to the inner and outer surfaces of each fabric ply. The balanced fabric is formed as woven sheets from filament yarns resistant to high temperatures. Balanced fabric sheets are sectioned at a predetermined angle to the filament yarns to form balanced fabric plies. The yarns of the balanced fabric plies are orientated at the predetermined angle with respect to the longitudinal axis of the composite hose such that the composite hose has a predetermined longitudinal flexibility to compensate for stress effects resulting from high temperatures, high pressures and/or vibrations.

Abstract: Tubular sleeves of braided, knited or woven construction comprised of bulky continuous filament yarns and a resilient engineered plastic monofilament have excellent noise reduction characteristics. The bulky yarn provides a flexible cushion for cables and tubes covered by the sleeves thereby reducing vibration induced wear. The resilient monofilament gives the sleeve material sufficient hand so that sleeves formed according to the invention tend to assume the open position without loss of the ability to deaden sound and cushion vibration.

Abstract: A rubber hose having an outer tube formed of a rubber material, and an inner tube located radially inwardly of the outer tube, the inner tube including an inner layer formed of a first composition containing a fluoro rubber as a major constituent thereof, and an outer layer located radially outwardly of the inner layer, the outer layer of the inner tube being formed of a second composition containing as a major constituent thereof a blend of chlorosulphonated polyethylene and polyvinyl chloride.

Abstract: Composite articles comprising a matrix material and reinforcing fibres coated individually or in tows with a support layer and methods of making the same are disclosed. The support layer is capable of supporting the fibres and preventing kinking thereof when the article is deformed while the matrix material is relatively soft. Polymeric matrix and support layer materials, either thermoplastic or thermosetting, are disclosed. When the support layer comprises a thermoplastic material, it should be selected to have a softening temperature which is higher than any temperature to which the article is heated for deformation. If matrix material and support layer are thermoplastic, the materials should be selected so that the softening point of the support layer is at least 10.degree. C. higher than that of the matrix, especially at least 30.degree. C. higher. According to the disclosure, the fibres are arranged so as to deform in a trellis deformation when the article is deformed.

Abstract: A self-molding part in a self-molding hose formed by vulcanizing an elastomer applied as a topping layer to one surface of a heat-shrinkable woven fabric is used as a hose molding part. With the use of this self-molding part, a self-molding hose is formed without using any external pressure devices such as molding using restricting fabric and a mold, etc. Further disclosed is a continuous vulcanization method in which a continuously formed hose is heated from the inside surface of a hose, and a continuous vulcanization method in which a continuously formed hose is heated from the outside surface of a hose.

Abstract: A heat deformable tube having a melt liner of noncross-liquid, thermoplastic material, such that upon heating to a temperature high enough to cause the tube to return to its original shape; the melt liner melts and encapsulates the substrate.

Abstract: A pipe of thermosetting resin, characterized in that it comprises a layer of curable thermosetting resin enclosed between a hose-shaped inner foil and a hose-shaped outer foil, which layer in its curable state together with said two foils forms the shape of a flexible foldable hose, in which shape the pipe can be laid in place and subsequently given its final shape and is made shape permanent by curing the thermosetting resin, said layer of curable thermosetting resin being reinforced by a fabric reinforcement braided of thread systems movable relative to each other, which fabric reinforcement owing to the relative movability of the thread systems can be widened and contracted to change the diameter of the pipe in the form of a flexible hose, and said thread systems being interlocked by the thermosetting resin in its cured state.

Abstract: A refregerant transporting hose having an inner tube; an outer tube of a rubber material located radially outwardly of the inner tube; and a reinforcing fiber layer interposed between the inner and outer tubes, such that the reinforcing fiber layer and the inner and outer tubes constitute an integral tubular body, the inner tube including a resinous layer formed of a blend of modified polyolefine and polymaide resin. Alternatively, the inner tube includes a resinous layer formed of a reaction product of polyamide, and polyolefine whose molecular chain has a pair of functional groups at both ends thereof. The hose has a high flexibility as well as a high resistance to gas permeation therethrough.

Abstract: A refrigerant transporting hose having an inner tube including an inner and an outer rubber layer and an intermediate resinous layer interposed between the inner and outer rubber layers; an outer tube formed of a rubber material located radially outwardly of the inner tube; and a reinforcing fiber layer interposed between the inner and outer tubes, such that the fiber layer and the inner and outer tubes constitute an integral tubular body, the inner rubber layer of the inner tube having a resistance to water permeation as high as, or higher than, that of the outer rubber layer. The inner rubber layer may be formed of a rubber material selected from the group consisting of acrylonitrile-butadiene rubber (NBR), chlorosulfonated polyethylene (CSM), chlorinated polyethylene (CPE), epichlorohydrin rubber (CHC, CHR), chloroprene rubber (CR), chlorinated isobutylene-isoprene rubber (Cl-IIR) and ethylene propylene diene rubber (EPDM).

Abstract: Hoses for transporting or otherwise handling refrigerant and oil fluids are disclosed which are comprised of an inner tube, an outer cover and a reinforcing layer interposed therebetween. The inner tube includes at least two walls, one being an inner resinous wall and the other being an outer rubbery wall having specified moduli at 100%. The outer cover is formed by a selected class of rubbers having a higher modulus at 100% than the outer wall of the inner tube. The resulting hose is securely interconnectable with metal fittings, highly impermeable to gaseous and oily fluids, sufficiently resistant to stress cracking and adequately flexible.

Abstract: A refrigerant transporting hose having an inner tube including an inner and an outer rubber layer and an intermediate resin layer interposed between the inner and outer rubber layers; an outer tube formed of a rubber material located radially outwardly of the inner tube; and a reinforcing fiber layer interposed between the inner and outer tubes, such that the reinforcing fiber layer and the inner and outer tubes constitute an integral tubular body. The inner tube further includes a first adhesive layer for bonding the inner rubber layer and the intermediate resin layer to each other, and a second adhesive layer for bonding the intermediate resin layer and the outer rubber layer to each other. The first and second adhesive layers consist essentially of at least one elastomer, and at least one resin selected from the group consisting of phenolic resin and epoxy resin.

Abstract: A hose construction and method of making the same are provided, the hose construction having a tubular wall comprising an inner layer of polymeric material, an outer layer of polymeric material, an intermediate layer of polymeric material disposed between the inner and outer layers, a helically wound thermoplastic monofilament of substantially circular transverse cross-sectional configuration embedded in the intermediate layer, a first ply of woven material disposed intermediate the outer layer and the intermediate layer, and a second ply of woven material disposed intermediate the inner layer and the intermediate layer, the monofilament having a diameter that is approximately one-third of the thickness of the wall and is approximately one-third of the distance between the centers of each pair of adjacent turns of the monofilament.