Abstract: As the first object, the present invention intends to provide high-pressure composite pipes which show remarkable pressure resistance and optimum applicability in various uses and which can be economically manufactured in a light weight. To achieve this object, a high-pressure composite pipe of the present invention comprises a pipe-shaped inner layer made of a synthetic resin, a reinforcing layer made of a stretched polyolefin resin sheet and wound on an external circumferential surface of the inner layer, and an outer layer made of a synthetic resin and disposed on an external circumferential surface of the reinforcing layer. The winding direction of the reinforcing layer is oriented at a predetermined angle relative to the axis of the pipe. Between the inner layer and the reinforcing layer and between the outer layer and the reinforcing layer, adhesion layers having affinity to these layers are interposed.

Abstract: A brake hose includes two reinforcing layers in a rubber base. The brake hose comprises an inner tube rubber layer having a flow path for flowing fluid, a lower yarn layer formed by braiding first yarns around the inner tube rubber layer and an upper yarn layer formed by braiding second yarns around the lower yarn layer and a cover rubber layer covering the upper yarn layer. A lower yarn layer duty LD given by the equation, LD(%)=(LRP/PRP)×100, has a value of 50-65%, where LRP denotes an inner pressure at which a brake hose without the upper yarn layer and the cover would burst, and PRP denotes an inner pressure at which the brake hose would burst.

Abstract: A bead and interconnecting bead structure for use in a flexible arm assembly having improved interface characteristics allowing for simple, quiet adjustment of the structure in three dimensions, while simultaneously increasing the weight of object the arm assembly can support. The interface characteristics are improved by utilizing two different materials at the area of contact between two adjacent beads.

Abstract: A water delivery tube assembly for use in an internal combustion engine of a locomotive provides water between an inlet aperture of a power pack and an outlet aperture of a manifold where the inlet aperture and outlet apertures are longitudinally offset from each other and are disposed in misaligned planes. The assembly includes a flexible metal pipe having inlet and outlet ends and a metal braid surrounding the pipe. The inlet and outlet housings are operatively coupled to the inlet and outlet ends of the pipe, respectively and defme an internal fluid flow path in fluid communication with the pipe. The inlet and outlet housings have compound angles defining the fluid flow path such that when the inlet housing is secured to the power pack and the outlet housing is secured to the manifold, the flexible metal pipe is maintained in a substantially linear configuration between the housings.

Abstract: The present invention provides a tubular member construction capable of preventing the end portion of a flexible pipe formed of a band member from coming loose without costing. The flexible pipe is formed by winding a metallic tubular member in a spiral shape in an overlapped manner, and a plurality of wavy corrugations are formed on the peripheral wall surface of the flexible pipe continuously in the axial direction. In order to prevent a band member located in an end portion of the flexible pipe from coming loose, collapsed portions are formed on corrugations located in the end portions of the tubular member.

Abstract: A temporary plug for stemming the flow of water in a water system during the repair of a pipe. The plug is constructed of a water soluble fiber, preferably poly(vinyl alcohol) polymer fiber. The polyvinyl alcohol fiber is preferable carded and needle punched into a fibrous sheet material. Plugs of a predetermined size are then cut from the fibrous sheet material.

Abstract: A fuel hose which is less permeable to an automotive fuel and highly resistant to a sour gasoline. The fuel hose comprises at least one layer including an innermost layer which comprises a thermoplastic polybutylene terephthalate elastomer containing a dimer acid moiety.

Abstract: The present invention is an improved O-ring seal flat face fitting of the type having a male portion including an O-ring, and a female portion having a tube with an inside diameter, an extended peripheral limit having a diameter corresponding to said inside diameter, a nut, and a joinder portion. It is improved by the joinder portion including a void having a portion extending radially beyond the extended peripheral limit.

Abstract: The present invention provides a cost effective means by which pressure reduction in a fluid flow control device is optimized. The pressure reduction achieved according to the present invention also minimizes valve wear and presents new solutions in reducing, attenuating, eliminating, damping, redirecting, or otherwise defeating valve noise. In accordance with one embodiment of the present invention, a flow control device is provided including a valve trim assembly comprising a plurality of valve trim disks defining a plurality of flow paths along a fluid passage between a fluid inlet and a fluid outlet of the flow control device. Respective flow paths defined by the valve trim disks comprise an expansion/contraction mechanism, a velocity control mechanism, an acoustic chamber, and frequency shifting passages. The expansion/contraction mechanism has a cross section including rapid increases and decreases in cross-sectional flow area.

Abstract: The present invention relates to a method intended for heat insulation of a pipe (1), comprising the following successive stages of depositing, on the outer surface of the pipe moving longitudinally, a thickness (3) of an insulating material made of elastomer having an elastic type behavior, substantially without irreversible plastic deformation, forming at least one circumferential slot (4) in the thickness of the material substantially orthogonally to the axis (2) of the pipe, and coating the insulating material thickness with a sealed sheath. In a variant, the slot is machined in the thickness of the insulant. The invention further relates to a heat-insulated pipe.

Abstract: A multilayer tubing for conveying liquid, especially motor vehicle fuel in a motor vehicle is extruded with an outer layer composed of nylon 12, an intermediate layer composed of an ethylene vinyl alcohol copolymer and an electrically-conductive inner layer composed of nylon 6 or nylon 12 and compounded with at most 30% by weight of conductive carbon black or graphite fibril.

Abstract: A method for securing a shell assembly to a pipeline. A two part shell assembly is secured to the pipeline and holds in position an annular sealing arrangement located about a predetermined area of the outer surface of the pipeline. The sealing arrangement includes a containment ring surrounding an annular seal. The containment ring is provided with connected through passages so that sealant can be introduced by a hole in the assembly into the passages to provide sealing between the containment ring and the pipeline, and between the containment ring and the shell assembly. Thus, should the annular seal fail during service the introduced sealant provides a seal.

Abstract: The invention concerns a flexible pipe element, in particular for exhaust pipes of combustion engines of motor vehicles, with a helically threaded or ring-corrugated bellows, at least one strip wound hose which is coaxially adjacent to the bellows and which is helically wound or comprises several annular segments, at least one spacer which is disposed locally between the bellows and the strip wound hose and a knitted tube disposed on the outside, wherein the pipe element has an overall maximum rigidity of 5 N/mm.

Abstract: Metal-plastic multilayer pipe with a plastic inner pipe (30) and a metal sheath (32) around the plastic inner pipe (30), where the metal sheath (32) is of uniform thickness, is applied to the plastic inner pipe (30) so that it completely encircles the plastic inner pipe (30) and a practical plastic outer layer (38), with the feature that the thickness of the metal sheath (32) as compared to the total thickness of all layers of the multilayer pipe (32, 34 and 38), is sufficiently thin that the metal sheath (32) accounts for a negligible part of the overall strength and stiffness of the multilayer pipe and, as a consequence, when the multilayer pipe is bent in an arc, the metal sheath (32) offers negligible resistance to such bending as compared to the resistance offered by the inner pipe (30) and the practical cover layer (38), and when so bent, the multilayer pipe tends to remain bent in said arc, whereby, the multilayer pipe has “form stability”.

Abstract: A spoolable composite tube capable of being spooled onto a reel for storage and for use in oil field applications. The spoolable tube exhibits unique anistropic characteristics that provide improved burst and collapse pressures, increased tensile strength, compression strength, and load carrying capacity, while still remaining sufficiently bendable to be spooled onto a reel in an open bore configuration. The spoolable composite tube can include an inner liner, an interface layer, fiber composite layers, a pressure barrier layer, and an outer protective layer. The fiber composite layers can have a unique triaxial braid structure.

Abstract: The present invention relates to a device for fixing a tubular element in a cavity, which device is made up of hoops made of an elastically flexible material disposed in cross-sectional planes of said cavity, and means for retaining said element, said device being characterized in that, along the longitudinal axis of said cavity, said hoops are secured together by a flexible longitudinal support and are interconnected by a flexible membrane.

Abstract: A barrier device (1) and technique for use in the plumbing during construction of a swimming pool includes a tubular cylindrical section (2) having an open first end. A pop-out barrier (12) is integral with the cylindrical section, and is disposed to cover a second end of the cylindrical section. In one embodiment, an annular water barrier flange (3) is integral with the cylindrical section, and is disposed about a mid portion of the cylindrical section to prevent water leakage around an outer surface of the cylindrical section (2) when the barrier device is installed on the end of a water return pipe or drain pipe extending through the a wall surface of a swimming pool.

Abstract: A unitary removable barrier for installation in a cylindrical water line to selectively block the water line to passage of water therethrough. The unitary removable barrier is composed of a single piece body having at least one cylindrical section sized to receive upstream and downstream pipes of the water line. A unitary planar disk is molded with the cylindrical section and is of a circular circumference which completely blocks the water line when in place but which is selectively removable from the cylindrical section thus removing the barrier to the passage of water through the line.

Abstract: An apparatus and method of providing a flexible needle assembly for use with a medication delivery pen. The flexible needle assembly includes a needle cannula having proximal and distal points and a hub coupled to the needle cannula. The hub includes a flexible roof, or ball-and-socket arrangement, that permits the needle cannula to move about the centerline of the hub. The flexible roof can include one or more concentric ribs to enhance flexibility of the needle cannula about the centerline of the hub.

Abstract: An energy attenuation restrictor device for use in an energy attenuation apparatus for a conduit adapted to convey a liquid under pressure, particularly, in the power steering system of a vehicle wherein said energy attenuation restrictor device includes a tuning cable composed of a first organic polymer and a fitting member composed of a second organic polymer, and a method for molding the energy attenuation restrictor device are described.