Abstract: A method for arresting a propagating crack in a steel line pipe characterized by ductile or mixed mode fracture which involves providing a mass of material on or around the pipe which is sufficient to constrain or reduce the outward acceleration of the pipe walls behind the crack tip after the crack tip has propagated therepast.

Abstract: Elongate, deformable, composite tubing for use in maintaining or controlling the temperature of a fluid conveyed therethrough comprising one or more tubular fluid conveyance lines or one or more tubular fluid conveyance lines disposed in heat transfer relationship with one or more heating lines and having disposed in encompassing relationship thereabout an improved flexible thermal barrier. The improved thermal barrier comprises one or more flexible, flame resistant, low chlorine bearing, sheet-like layers of low bulk fibrous glass elements having a density of less than about 20 lb./cu. ft. providing improved thermal insulation characteristics in combination with improved flexibility and reduced outer diameter.

Abstract: A quick coupling connector device, which is intended for use as a terminal connecting member for a floating hose piping. The connector device is composed of two floating parts, which define, when assembled, one single floating body with hydraulic seal properties.One of said parts can be attached to the floating pipe and comprises remotely controlled quick coupling means, while the other part is a detachable sealing cover for said one part.

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: An extra corporeal blood tube injection site comprising a smooth blood conduit or tube, an elongated elastomeric sleeve surrounding a section of the tube, and a C-shaped needle-impenetrable member extending along and partially surrounding the sleeve which generates forces within the portion of the sleeve that is not covered by the C-shaped member sufficient to prevent air leakage into, or blood leakage from, the tube during needle penetration or after withdrawal of a needle.

Abstract: A device for closing off the space defined between an inner pipe and an outer shield tube comprises a sleeve of flexible resilient material having one end portion whose internal diameter is substantially equal to the external diameter of the inner end, a second end portion whose internal diameter is substantially equal to the external diameter of the shield tube, and an intermediate portion of substantially frusto-conical form joining the first and second end portions. The sleeve also has a tubular appendix which is joined to the intermediate portion of the sleeve and extends substantially parallel to the axis of the inner pipe and the shield tube for accomodating a signal transmitting cable. Angle plates are provided, with each having an axial portion extending over the extension of the shield tube at one end thereof and a radial portion extending at least part of the way from the axial portion across the clearance between the shield tube and the inner pipe.

Abstract: A device for arresting the propagation of a crack, split or fracture in a pipeline comprises a cylindrical sleeve of greater diameter than the pipeline and having an annular and end plate fixed at each end thereof, the assembly thus formed being arranged to be positioned around the pipeline so as to define an annular space therebetween which may be filled with grout material of high compressive strength.

Abstract: An endoscope is disclosed having a propulsion mechanism and at least one transmitter at the distal end transmitting bursts of energy waves (radio frequency or ultrasonic) for tracking the position of the distal end through the use of two or more transducers on the anterior or lateral surfaces of a patient. The propulsion mechanism may consist of two radially expandable bladders separated by an axially expandable bellows with only the forward bladder attached to the distal end so that by expanding and contracting them in proper sequence, propulsion of the endoscope is achieved. Alternate mechanisms comprise compliant paddles on the distal end directly on an articulated section, or compliant paddles on a rotatable sleeve on the distal end. The endoscope has a sheath which includes material having a sharp melting point slightly above body temperature so that the sheath may be made flexible at selected sections by applying current to separate heating wires in the sections of the sheath.

Abstract: A hose conduit comprises an inner tubular fluid conducting space which is surrounded by a ringshaped space. Openings are provided in the wall of the inner hose leading into the ringshaped space. In the ringshaped space is provided a longway passage extending through repeated bows and bends and repeatedly changing its direction. From the said longway passage openings in the outer wall of the said ringshaped space lead into the open. The assembly of the hose conduit is built up of at least two layers of thin foil which are connected together. The longway passage is obtained by profiling one of the foils, i.e. by applying a raised, embossed pattern to one of the foils.

Abstract: A thermoplastic corrugated drainage tube comprising annular peaks and valleys and a plurality of drainage openings internally cut about the circumference of each valley, the openings in each valley aligned with the openings in successive valleys along helical lines described by said openings. The method of forming the drainage openings comprises placing a cutting tool in the interior of the tubing and rotating the tool while moving the tubing axially past the tool. The cutting tool comprises a body having a plurality of radially projecting cutters spaced equidistantly about the cutter body and means for rotating the tool.

Abstract: Open ducts for ground heating of hothouses consist of flattened tubes of flexible material such as plastic. The tubes are slit open lengthwise, folded back over tensioned cords and secured by fasteners so as to form the edges of the ducts, the two ends of which remain tubular and are connected to the inlet and outlet pipes of a warm-water circulation system.

Abstract: A hose that will withstand pressure and vacuum as well as resist kinking or collapsing in which the wall structure includes at least two radially spaced layers of monofilaments of textile material with a layer of elastomeric material separating the layers. Also at least one additional layer of a fabric of aramid fiber is included in the wall as additional reinforcement. Construction is of relative lighweight and may be readily adapted to a floating hose construction.

Abstract: A flexible hose line which may be used for loading and unloading oil tankers having a secondary fluid retaining reinforcement carcass to retain leakage and to indicate by radial expansion failure of the main carcass. The secondary carcass may be of high elongation material or may have an angle of lay of the reinforcement to give radial expansion on pressurization.

Abstract: A blow plate and blow tube assembly. The blow tube conveys core-making sand from the blow plate to a cavity in a core box for forming a sand core utilized in metal casting. The blow plate has a discharge passage with female threads. The blow tube has a body portion and a tip portion for directing the sand from the blow plate into the core box. The body portion of the blow tube has male threads axially therealong and the blow tube is threaded into the passage in the blow plate and extends from the blow plate for engaging the core box. A nut is threaded onto the male threads of the body portion of the blow tube and is disposed between the blow plate and the core box. The blow tube is made of plastic material and includes a shoulder or sleeve portion between the male threads on the body portion and the conically-shaped tip portion. The conically-shaped tip portion has spaced annular ribs thereabout for forming seals with a conical seat in the core box.

Abstract: A long-distance heating conduit comprising one or more tubes which carry the heating medium, are laid in the conduit and are surrounded individually or jointly by at least one layer of heat-insulating material and are covered by at least one cover foil which extends in a closed path round the tube or tubes and is provided with holes.

Abstract: A lock screw arrangement for a lateral passage which intersects the longitudinal bore of a pressure vessel, wherein the lateral passage includes a first shoulder facing toward, a second shoulder facing away from the bore, includes a shaft for extending through the lateral passage with threads intermediate the inner and outer shaft ends. The inner shaft end is formed to provide a surface for engaging a member to retain it in the bore and an annular shoulder facing the first shoulder within the lateral passage. Packing abuts the second shoulder and surrounds the shaft. A nut is externally threaded for engaging with threads in the internal passage, and internal threads for engaging with the threads on the shaft whereby the nut may be engaged against the packing to seal between the passage and shaft.Seal means are carried by the nut for engaging adjacent the outer shaft end to isolate the internal nut threads and shaft threads from the environment and from internal pressure in the vessel.

Abstract: A recoverable tubular article comprising an elastomeric sleeve held in a radially expanded or extended condition and capable of recovering to its pre-expanded condition of smaller diameter upon the removal of an outer restraint, an outer restraint, essentially tubular in configuration, bonded to said elastomeric sleeve, said bond between the sleeve and the restraint being sufficiently strong to retain the elastomeric sleeve in its expanded condition under ordinary conditions of storage and susceptible to attack by solvents weakening the bond sufficiently to allow the elastomeric sleeve to peel away from the restraint and recover to its original state.

Abstract: A conduit especially suitable for carrying high temperature fluids is disclosed herein and includes an outer casing, a concentric inner core and an intermediate concentric layer of insulation material. The conduit also includes what may be referred to as a pressure relief valve located through the outer casing of the conduit and extending into the concentric layer of insulation material. In the event that the fluid finds its way into this layer of insulation material and in the event it expands, the pressure relief valve provides a readily available passage to the ambient surroundings for the expanding fluid.

Abstract: Double wall helical pipe formed from a single metal strip, pipe forming method and configuration of strip for forming such pipe. A metal strip is formed with pipe seam elements and curled into overlapped helical convolutions, and the seam elements are secured together to provide a helical pipe seam. One or both pipe walls may be corrugated.

Abstract: A pipe having an outer coating of foam plastics, a tape of thermoplastics being wrapped around the foam plastics in an overlapping way, the overlapping parts being heatsealed to each other. At least one reinforcing filament is present on the original contacting surfaces of the overlaps. Preferably one straight and one zig-zag applied filament are present.

Abstract: A long-distance heating conduit comprising one or more tubes conveying the heating medium, which tubes are supported in the conduit by support means consisting of an insulating material resistant to compression and surrounded by a heat-insulating material also resistant to compression and enclosed by cover foils having holes, the size and shape of which are dimensioned in such a manner that water substantially cannot penetrate, but that they are permeable to gases and vapors.

Abstract: An irrigation deterrent tube, particularly adapted for drip or trickle irrigation, the tube having, normally, a flat configuration when free of internal pressure, and expansible to an essentially cylindrical configuration, when pressurized, the tube having laterally projecting webs which tend to be the first to be bitten by a rodent while exploring the presence of the irrigation tube; the lateral margins of the webs may be enlarged to contain a concentration of a deterrent or toxic material. In one embodiment, the tube and webs form a single extrusion, in other embodiments, the tube and webs may be separately extruded and subsequently joined together.

Abstract: A water conduit of flexible material serves as an irrigation device or as a drainage pipe. At regular or irregular distance from one another cuts are made in the wall of the conduit resulting in tongue like portions which adhere to the wall of the conduit along an uncut portion. These tongues are movable out of the plane of the wall and have an outer surface which is smaller in area than the inner surface thereof.

Abstract: This invention is a hose fitting, a number of which can be applied to a long hose extending over the ground to protect it from damage as it is moved to and fro. Each fitting consists of a sleeve having a wheel mounted to rotate around it, and a carrying handle which is hollow to carry service lines.

Abstract: A resealable device for providing repeated access to the lumen of a fluid transmitting conduit including a puncturable elastomeric member maintained in radial compression and limited longitudinal expansion about the conduit to reseal punctures in the elastomeric member and provide a compression seal between the elastomeric member and the conduit. Advantageously, the elastomeric member is held in a state of radial compression and limited longitudinal expansion by a rigid windowed jacket having fixed transverse stops. Moreover, the jacket is formed of a material which is substantially impenetrable to needles or cannulae in normal usage.

Abstract: A device is disclosed which is adapted to be inserted in the threaded end of the sleeve of a pipe coupling to permit connection of piping thereto having either a convex-shaped end or a straight-tubular end by means of a correspondingly threaded nut which is capable of exerting an axially compressive force on the device. The device has a through bore, a portion of which is a socket substantially concave in shape for receiving the convex-shaped pipe end and a portion which is tubular in shape for receiving the straight tubular pipe end.

Abstract: A disposable self-locking injection site can be clamped onto tubing anywhere along the line. The injection site includes a tubular barrel having two sections integrally hinged together with snap-fitting coupler parts which lock the sections together in a closed position about the line. The tubular barrel is shaped to define an interior recess communicating with at least one needle-receiving aperture. The interior recess snugly receives a self-sealing needle-penetrable resilient member or sleeve for cushioning and fluidly sealing the line so as to permit fluid-tight injection and withdrawal of a needle.

Abstract: A device for attachment to a gas-generating apparatus such as a gasoline-powered lawnmower to receive and transmit the exhaust gas from the apparatus to an opening in an underground cavity to asphyxiate rodents inhabiting the cavity.

Abstract: A plurality of parallel constructed members that have means for securing the two parallel members together along an axis parallel to the longitudinal axis of the members to lend structural support of the members relative to each other. This allows the structurally secured members to have structures having high strength to weight ratios and requiring minimum volume for the securing structure.

Abstract: An assembly comprising a non-woven tube having fixed on its inner side a membrane for membrane filtration, and a tearing element provided in the non-woven tube. The tearing element consists preferably of a longitudinal welding joint obtained by ultrasonic welding.

Abstract: A method for the preparation of a hydrophilic acrylonitrile-containing polymer comprising admixing a solution of said polymer in 47% to 75%, preferably 50 to 72% concentrated HNO.sub.3, with solid particles of a substance insoluble in said acid solution and soluble in water, aqueous solutions of said substance being operative to precipitate said polymer from said HNO.sub.3, shaping the mixture of the dissolved polymer with said solid substance to a desired physical shape, coagulating said shaped polymer in an aqueous medium and washing said solid particles out from the coagulated polymer, and articles made therefrom.The added solid substance either may react with nitric acid forming a water-soluble nitrate, or it may remain in the mixture unchanged.

Abstract: A perforated pipe method of making a perforated pipe suitable for subsurface irrigation laterals by forming indentations and perforations in indentations of sheet material then rolling the sheet material into a tube or pipe.

Abstract: A hose member of synthetic plastic material is surrounded by a pressure-resistant armor and is provided at its opposite ends with mounting sleeves which surround the armor. At least one of the ends of the hose member extends axially beyond the associated mounting sleeve. Two connecting members are provided at the opposite ends, each having a nipple which extends into the hose member and which is formed with an externally enforcing bead surrounded by an axially intermediate portion of the respectively associated mounting sleeve. The nipples are retained against axial movement relative to the hose member by a retaining portion.

Abstract: A prepackaged shirred tubular casing article comprising a shirred casing length having a sizing means confined within an unshirred portion of said casing length, said sizing means having an outer perimeter larger than the inner perimeter of said unshirred casing length.

Abstract: A condensation reducing shroud assembly positionable around the inlet pipe of a water heater or the like. The assembly consists of a sleeve element which is positioned in a spaced-apart relationship about the portion of the water heater inlet pipe where condensation normally occurs. A spacing element is utilized to hold the sleeve in proper position, preferably by frictional force. By providing such a shroud assembly on the inlet pipe of a water heater, the accumulation and dripping of condensate which results from the temperature differential between the pipe and the heated air within the heater is eliminated or reduced by various thermal and evaporative processes. In an alternative embodiment, means are provided for trapping the condensate which forms and subsequently eliminating it through evaporation or drainage.

Abstract: A hose having a tube that is reinforced with at least two plies of a plurality of spiralled tubing, the tubing of the first ply oppositely spiralled from the tubing of the second ply.

Abstract: A tubular sleeve for use in a headlight assembly and the like and the method of manufacturing it. A strip blank is punched out of metal sheets or coiled strips. The blank has a straight edge along the lengths thereof and an arcuate edge opposite to the straight edge symmetrical relative to a plane passing through the center of the strip blank transversely thereof. The blank has opposite ends having straight edges substantially parallel to the plane. The strip is bent or rolled into a tubular split-sleeve configuration and then a marginal edge portion along the arcuate edge is flared outwardly with a varying taper. The flare is then further bent to form a flange normal to the sides of the body of the split-sleeve. A ring is formed on the flange extending generally toward the straight edge by offsetting a marginal edge portion of the flange. The edges of the split-sleeve along the split are joined to form a closed tubular sleeve.

Abstract: A gasoline or other fuel storage tank associated with a fuel-powered vehicle has a recoiled spring disposed therewithin to prevent the siphoning of the fuel therefrom.

Abstract: Combined strengthening and corrosion protection of a ferrous metal pipeline is obtained by means of a wrap of ferrous metal strip, the strip being coated with a less noble metal, such as zinc or aluminum or a zinc alloy or an aluminum alloy, and the strip being under sufficient tension to strengthen and reinforce the pipe or to arrest fracture propagation. The less noble metal coating of the strip is electrically connected to the pipe to provide cathodic protection for the pipe. A coating of electrically insulating material may be interposed between the pipe and the wrap. An external power source may be utilized for primary cathodic protection in which case the coated strip is relied upon as a secondary or back-up system.

Abstract: A drug injection device (or what some might prefer to call a "drug injection site") comprises a doubled wall, doughnut-shaped cylinder adapted to be inserted into an intravenous delivery tube. Preferably it is made of a pair of identically shaped elements having an outer end an inner circular wall, both of which, when the two elements are placed together in opposed relationship, form continuous walls of a doughnut or O-ring shape. The interior of the doughnut is filled with a soft surgical grade rubber which, when under compression, permits ready insertion of a hypodermic needle therethrough but which, when the needle is withdrawn, is self-sealing. A plurality of radially aligned apertures, or windows, are provided in the inner and outer walls, so that the hypodermic needle can be inserted through the outer wall, through the rubber sealing element and then through the aligned window in the inner wall.

Abstract: A hose having a cover and carcass reinforced tube between which are disposed successive plies of spiralled multiple-end tubing and preferably a cellular foam matrix, the successive tubing plies generally nesting with each other.

Abstract: Box for mounting diffusers, wherein the main body of the box is made of expanded plastic or other similar material, and wherein one or more connection elements are molded within the walls of the box to provide for connection of the box to a building structure and to a duct, and to reinforce the box.

Abstract: A hose or pipe for sprinkling liquids, e.g. water or liquid manure, has oet orifices along its length. These orifices are located in an elastically deformable portion of the hose or pipe. The stress-free shape of the elastic portion is so chosen that when the interior fluid pressure changes, the free aperture of the orifice also changes. By a suitable choice of hose shapes the net flow rate through the orifice may be made independent of the internal fluid pressure.

Abstract: An outer tube is corrugated helically or annularly and an inner, uncorrugated tube has axially and radially outwardly extending ribs engaging inwardly directed corrugation crests of the outer tube. Part of a fluid flow is diverted into the space between the tubes.

Abstract: A self-floating flexible pipe for use with off-shore petroleum installations, which includes an inner reinforced pipe for conducting fluids which is surrounded by a layer of cellular material for assuring permanent floatation of the pipe. In order to protect the cellular layer, an outer reinforcing sheathing formed of helically wound metallic cables embedded in a rubber layer is provided. These helically wound metallic cables are wound at a setting angle with respect to the longitudinal axis of the pipe in the range of 56.degree. to 68.degree. so as to minimize the effect of these armoring cables on the flexibility of the overall pipe construction. These armoring cables are also preferably resilient in a longitudinal direction, with preferred embodiments including undulated cables so as to further lessen the impact of these cables on the flexibility of the pipe. An outer covering layer of polychloroprene is provided on the rubber layer within which the cables are embedded for protecting this rubber layer.

Abstract: An expendable restrain device including restraint members positioned in spaced relation around a pressure pipe to limit pipe movement in the event of pipe rupture, the restraint members being designed to undergo plastic elongation to thereby absorb the energy of the pipe.

Abstract: A suction pipe for a suction operated cleaner, especially a sectioned suction pipe, in which the pipe sections are provided with integral extensions thereon forming an axial channel along the outside of the pipe which is open on one side to receive a supply conduit, such as an electric cable.

Abstract: An apparatus for terminating a subsea flowline at an offshore structure by providing a bend in the continuous flowline at the bottom of the offshore structure to provide an upstanding flowline end portion adapted to be secured to the offshore structure. A pipe bending device comprising a plurality of spaced cylindrical segments sleeved over a selected location on the flowline with adjacent segments pivotally interconnected to each other on one side of the flowline and end cylindrical segments pivotally interconnected to each other by a cylinder and piston means on the opposite side of the flowline. The device is fixed to the flowline at an end segment thereof. Actuation of the cylinder and piston means imposes a bending force on the flowline within the cylindrical segments for imparting a bend of selected radius to the flowline within the cylindrical segments.

Abstract: A method for forming integral internal channels defined by a wall with an annular cross-section inside high softening temperature glass tubing is described. In particular, a reduced pressure is provided inside a rotating tube with heating outside which softens the glass for deformation by the reduced pressure while a smaller tube is maintained in position in contact with the inside walls of the larger tube. The pressure in the smaller tube is usually the same as that in the larger tube and is such that it can collapse at the point of contact to form at least one fusion band along the inside wall of the larger tube. The position of the smaller tube is maintained such that the larger tube has concave depressions between the fusion bands. Usually the heating is accomplished by a gas flame ring burner positioned under the larger tube and moved progressively along the larger tube until the desired fusion of the tubes is completed.

Abstract: A stiffening device for filter hoses of square crosssection includes two substantially identically shaped wires or strips. Each wire or strip is bent along a single plane repeatedly substantially at right angles to each other to form a zig-zag configuration having alternate longitudinally and transversely extending portions. The length of each of the transversely extending portions correspond to the diagnonal measurement of the hose. The two wires or strips are connected with each other at the centre points of the transversely extending portions and at right angles to the individual plane of those portions.