Abstract: A fluid flow device in one embodiment comprising a housing having an aperture or a plurality of apertures therein and in another embodiment a single chamber with a piston such as a flexible member forming a chamber and a vibratory member for vibrating the flexible member to simultaneously eject an array of laminar flow fluid vortices that coalesce with each other to form a larger fluid vortex that can be used for direct cooling or for inducing circulation of a cooling fluid within an enclosure to cool the components within the system. When used within a closed system the inventor provides a zero net flux device as the fluid contained within a sealed chamber can be stirred, or mixed, without the introduction of fresh fluid from the outside the system.

Abstract: The invention relates to a fuel pressure damping system for use in a hydraulic system. The invention introduces specifically sized restrictors in the fuel passage to control the maximum operating system pulse magnitude as well as damping the overall pulsations of the system.

Abstract: The invention concerns a flexible duct (1) comprising from inside outwards a carcass (2) produced by a short-pitched metallic helical winding forming butt gaps (12), an overlapping layer (10) acting as a heat shield consisting of helically wound plastic strips (10a, 10b), a sealed inner pressure sheath (3), extruded in plastic on said overlapping layer (10), at least an armouring web (5) and at least an outer sealing sheath (7). The invention is characterised in that the overlapping strips (10a, 10b) are wound at a winding angle less than 35°.

Abstract: A pipe insulation assembly includes a length of tubular insulation with a longitudinally extending slit so that the tubular insulation can be passed over and mounted on a length of pipe and a jacket overlaying the outer surface of the tubular insulation. To facilitate the installation of the pipe insulation assembly, a ruler, which is associated with the jacket and, preferably, no longer visible when the pipe insulation is mounted on a pipe, extends for the length of the jacket and is located adjacent the slit in the tubular insulation. The ruler has units of linear measurement marked thereon for measuring the pipe insulation assembly in the direction of the length of the pipe insulation assembly.

Abstract: An electrically conductive confined space ventilation conduit formed of a substantially rigid non-metallic conductive material, such as plastic, and a related process for ventilating an enclosure accessed by a manhole or other port. In one embodiment, the conduit has a pair of outer cylindrical sections and a central section having a cross-sectional shape of a crescent or a segment of a circle where it passes through a port to provide a minimum of obstruction for men and equipment passing through the port. Intermediate sections of varying cross-section connect the central section to the cylindrical outer sections so that the outer sections are offset from the axis of the manhole. The central section is preferably configured to obstruct no more than about 10 percent of a standard manhole opening, while causing either no air flow rate reduction, or a reduction of no more than about 10 percent as compared to the flow rate through a cylindrical conduit similar to said outer sections.

Abstract: The invention provides a duct with high sound absorbing effect and sufficient exhausting efficiency, as well as an electronic apparatus having the duct. The duct can include a hollow duct body, an inflated section arranged at an intermediate part of a passage of the duct body, and a sponge bonded on internal surfaces of the duct body and the inflated section. The duct body and the inflated section can have a thickness of 0.25 mm and be formed of a sheet member of paper impregnated with polymethylpentene on the surface thereof. The duct body can also include an intake-port side duct body and an exhaust-port side duct body, which are connected together at an angle of 90° therebetween. Further, a fan can be connected to an intake port of the intake-port side duct body 201. The inflated section can be arranged in the side of the intake port, and the cross-sectional area of the inflated section can be 1.8 times that of the duct body.

Abstract: A method to set a hollow device into an undersea flow pipe uses a flexible pig driven by a flow flowing into said flow pipe to displace a hollow device to a point where a stop means halts a displacement of said hollow device, thereby setting said hollow device into position. A method to retrieve a hollow device into an undersea flow pipe uses a flexible pig driven by a flow flowing into said flow pipe to retrieve said hollow device from a location where said hollow device operates halted by a stopping means.

Abstract: A pressure reducer is configured for use in a liquid delivery system that requires its liquid contents to be pressurized to a first, relatively high pressure but also requires that the liquid be delivered to a downstream location such as a faucet at a second, relatively low pressure. The pressure reducer reduces the pressure of the flowing liquid by repeatedly imparting directional changes to the liquid. Preferably, the pressure reducer comprises a stationary restrictor having multiple aligned segments, each of which is configured to divide the liquid into two or more diverging streams and to recombine the streams at the end of the segment. Each segment preferably comprises a curved blade having opposed generally toroidal surfaces that border one of two divided liquid streams. The device may be located either remote from or adjacent to the faucet or other terminal point of the system and can include either a single passage or multiple parallel passages.

Abstract: A corrugated pipe (2) has a plurality of corrugation structures (10, 12) positioned adjacent one another. The corrugation structures (10, 12) comprise an inner cylindrical wall (22), two annular wall portions (28, 32) that extend outwardly from the inner cylindrical wall (22), and a bowed annular wall portion (40) that is connected to the outer ends (36, 38) of the two annular wall portions (28, 32). The corrugation structure (10, 12) includes a centroid (48, 49) and at least a portion of the inner surface (50) of the bowed wall portion (40) has a radius R1 centered on the centroid (48, 49) and at least a portion of the outer surface (52) of the bowed wall portion (40) has a radius and at least R2 centered on the centroid (48, 49). The cavity (56) defined by the corrugation structure (10, 12) has an inner surface with an inner radius R2 centered on the centroid (48, 49).

Abstract: A flexible conduit for conveying cryogenic fluids has a metal inner tube and a metal outer tube. A strip-shaped spacer member is made of a material of low thermal conductivity, which is spirally wound on the inner tube such that it contacts both the inner and outer tubes. The strip-shaped spacer member is twisted about its own axis and includes a metal that is stable with respect to high-energy radiation and has a thermal conductivity of less than 25 W/m.K and a tensile strength of more than 240 MPa.

Abstract: The present invention comprises a sprayer boom and is incorporated in a spraying apparatus which includes a vehicle, a tank, hoses connected to nozzles, and the sprayer boom. The sprayer boom includes a number of wing sections each including at least one single-piece component cut from a sheet of metal to form a web or truss structure which replaces the usual rods and welds support provided to sprayer booms of this nature. Obtaining the single-piece component by cutting it from a sheet of metal rather than constructing the truss-structure by use of many rods reduces material and labor costs. Spaced apart rungs or tabs on the bottom of the sprayer boom provide openings through which sprayer nozzles are aimed while the nozzles, hoses and connectors remain mostly recessed within the boom which provides physical protection from wind and other damage and still allows easy access for repair.

Abstract: A system (10) for dousing a fire, such as a tunnel, includes a conduit (11) for delivering a fire extinguishing liquid and a trough (12) extending parallel to the conduit (11) for receiving liquid from the conduit (11). A carriage (27) is arranged to move on a track comprising an upper edge (19) of the trough (12) and the carriage (27) carries a pump having a nozzle (25), a video camera (33) and an inlet (26) each of which can be controlled robotically from a remote control station. The inlet (26) is deployed in the trough (12) to draw liquid from the trough (12). The system avoids complicated docking procedures for the pump.

Abstract: A profiled element (1) includes a tubular blank (2) which is formed into the desired shape by hydroforming. In conjunction with hydroforming, at least one slot essentially in the longitudinal direction of the blank is made in wall portions (4, 6) on the blank, and a reinforcing element (3) is fixed in each slot. In a suitable embodiment, each reinforcing element is fixed in two opposite slots and extends through a cavity in the blank. The invention relates to on the one hand a profiled element and on the other hand a method of producing the same.

Abstract: The invention relates to a method for manufacturing a throttle (3) in a hose (1), characterized in that the wall (13) of the hose (1) is manufactured in such a way that the interior of the hose (1) has a constriction in part of its length.

Abstract: An insulated pipeline comprises an inner pipe, and an outer poly sleeve co-axial with the inner pipe. The inner pipe and the outer poly sleeve are in spaced relationship to define an annulus. An insulating core within the annulus encases lengthwise the inner pipe, and comprises a plurality of pre-cured syntactic elements. A first binder fills interstices in the annulus. The pre-cured syntactic elements include microspheres and a second binder. Each of the pre-cured syntactic elements may also include macrospheres. The pre-cured syntactic elements preferably extruded and cylindrically shaped. In addition, in one embodiment, the second binder is preferably more rigid than the first binder.

Abstract: A single wire cable conduit provided having a rhomboid-shaped wire including approximately parallel sides, a rounded first end, and a tapered second end. The wire is serpentine wound into a hollow tubular body having a plurality of approximately parallel adjoining wire loops. The wire loops each have the rounded first end positioned in continuous displaceable contact with the tapered second end of an adjacent loop. As the hollow tubular body deflects, each wire loop displaces relative to its adjacent wire loop. Each rounded first end is able to rotate and translate along the abutting tapered second end reducing both conduit bending resistance and potential friction damage to either a sleeve or cable and to a jacket covering the hollow tubular body.

Abstract: An external supply system includes a sensing device to provide flush water automatically, and a supply device to provide cleaning liquid. The supply device is connected to the sensing device to provide the flush water and the cleaning liquid. Thus, the supply device co-operates with the sensing device to provide the cleaning agent and the flush water synchronously, thereby facilitating the user washing and cleaning the object.

Abstract: A flexible hose and a method for manufacturing the same includes a hose tube having a smooth exterior surface. The hose tube exterior surface has a fabric and cover laminated or wrapped thereon. The lead end of a single wire is helically wound about the hose tube on top of the cover. The wire in turn is at least partially encased by a rubber ridge preferably having a height greater than the thickness of the hose tube wall. The rubber ridge tapers in the direction of valleys formed between the ridges, and the resulting hose structure has improved flexibility by enabling the hose to flex at every valley, yet sufficient strength for heavy duty applications.

Abstract: The insulated pipe arrangement comprises at least two pipe bodies, each of which has a flexible inner fluid-guiding pipe, which is enclosed by an insulating layer made of elastomeric or thermoplastic foam, a protective film made of a thermoplastic, elastomer, or duromer of high-density being arranged around the insulating layer. The pipe bodies are bonded on opposing peripheral parts of their protective film by a layer of an adhesive which allows detachment of the adhesive bond without the protective film being damaged and which produces a renewed adhesive bond after detachment of the adhesive bond when the peripheral parts of the previous adhesive bond are brought into contact again.

Abstract: An insulated duct assembly includes an elongated duct, an insulation blanket, at least one sheet of escape wick material and a tape layer. The insulation blanket has an inner wicking layer. The insulation blanket is applied to the elongated duct so as to create a seam aligned longitudinally with respect to the duct. The seam is defined by first and second edges of the insulation blanket. The at least one sheet of escape wick material is disposed along at least one edge of the insulation blanket. The at least one sheet of escape wick material has a “C” shaped cross-section surrounding the at least one edge of the insulation blanket. The tape layer is disposed along and covers the seam.