Abstract: A method of producing a wet-layed non-woven mat from glass fibers includes the steps of: drawing streams of molten glass into continuous filaments, applying a size to the continuous filaments, gathering the continuous filaments into strands, chopping the strands into discrete length bundles while substantially maintaining the integrity of the bundles, drying the bundles, adding the bundles and a plurality of binder fibers to an aqueous-based mixture, thereby forming a slurry, mixing the slurry to entangle the bundles and the binder fibers, wherein the integrity of the bundles is substantially maintained in the slurry, transferring the slurry to a forming wire, wherein water is removed from the slurry to form a web while substantially maintaining the integrity of the bundles, and heating the web to fuse intersections between the bundles and the binder fibers, thereby forming a mat while substantially maintaining the integrity of the bundles.

Abstract: The instant invention relates to aqueous dispersions of one or more optical brightening agent (OBA) which do not need dispersants or other stabilizing additives in order to avoid sedimentation during storage. The optical brighteners are sulfonated triazinylaminostilbene compounds which have excellent properties for whitening of paper and other cellulosic substrates.

Abstract: A device for removing a liquid, dusty or solid substance from a moving fabric or web. A roll is placed transversely in relation to the moving fabric or web and arranged to rotate around a rotation axis. The roll includes an outer mantle through which a liquid or air flow can enter the inside of the roll. The rotating roll is placed inside a chamber. The chamber includes an opening in a direction of the rotating axis. The opening is arranged to expose at least a part of the outer mantle such that the moving fabric or web tangential to the chamber can be supported against the outer mantle. At least a spiral, screw or threaded structure is arranged inside the rotating roll at a distance from the outer mantle, and is arranged to rotate around a rotating axis and to transfer liquid or air that has entered the roll in the direction of the rotation axis.

Abstract: A chip pretreatment process which comprises conveying the feed material through a compression screw device having an atmosphere of saturated steam at a pressure above about 5 psig, decompressing and discharging the compressed material from the screw device into a decompression region, feeding the decompressed material from the decompression region into a fiberizing device, such as a low intensity disc refiner, where at least about 30 percent of the fiber bundles and fibers are axially separated, without substantial fibrillation of the fibers. In a more specific form the invention is directed to a process for producing mechanical pulp, including the steps of fiberizing wood chip feed material in a low intensity disc refiner until at least about 30 percent of the fibers are axially separated with less than about 5 percent fibrillation, and subsequently refining the fiberized material in a high intensity disc refiner until at least about 90 percent of the fibers are fibrillated.

Abstract: A system for producing cast components from molten metal. One form of the present invention includes a system for the precision pouring of molten metal within a casting mold.

Abstract: A sprue former of the type used to produce a casting mold includes a generally hollow body or a body having hollow sections. The body includes an inlet forming member and at least one first interface member. The inlet forming member is configured to provide an inlet cavity in the casting mold to enable casting material to enter the casting mold. The first interface members are configured to couple to casting patterns. The casting patterns represent items to be cast. The body can also includes a reservoir forming member and at least one connecting member coupling the reservoir forming member to the inlet forming member.

Abstract: A mechanical apparatus and method for the casting of metal components is disclosed. The apparatus includes a gooseneck having dual plungers for drawing molten metal from a crucible of hot metal and for forcing the drawn molten metal through the system, a hot runner assembly having a thermal valve developed in time and positioned adjacent the mold cavity, and a machine nozzle positioned between the gooseneck and the hot runner assembly. The dual plunger is fitted with a shot plunger and a shutoff plunger which work in conjunction to allow for molten metal to be drawn into the gooseneck but to stop its passage into the gooseneck when the metal is forced through the system into the die. Both temperature and flow rate are carefully monitored and controlled. Two embodiments of the gooseneck are provided in which the positions of the shot plunger and the shutoff plunger are altered and in which the molten metal is drawn into the gooseneck at different locations.

Abstract: A system for producing cast components from molten metal. One form of the present invention includes a system for the precision pouring of molten metal within a casting mold. The precision pouring system is driven by a pressure differential.

Abstract: A system for producing cast components from molten metal. One form of the present invention includes a system for the precision pouring of molten metal within a casting mold.

Abstract: Structures and methods for hindering molded part deformation during densification are discussed. Such devices and techniques can help alleviate stresses that tend to result in part deformation during firing, sintering, or other densification processes, and thus reduce the need for secondary straightening operations post-densification. In some instances, a support structure is utilized to orient a molded greenbody in a preferred direction to reduce deformation during firing (e.g., orienting a thin tail section is a plane parallel to the direction of gravity). The support structure can also be part of, or the entirety of, a thermal mass to help alleviate stresses that lead to part deformation. Though such structures and methods can be used for any molded piece, it can be particularly used to create a portion, or an entirety of, a medical device such as a jaw of an surgical instrument.

Abstract: A method for producing a consumable electrode for remelting and an end face cutter for use in the method in which an ingot made in a consumable electrode arc remelting process is used as a material for the consumable electrode, are characterized in that said ingot can be set so that its centerline axis in a longitudinal direction lies horizontally and an end face of said ingot is machined by milling to be flat, the end face being connected with a stub, the stub holding the consumable electrode. In melting the consumable electrode, the present invention makes it easier to machine the bottom face of ingot that is to be mounted onto the stub or to perform conditioning such as cleaning the surface, which results in cutting man-hours and processing steps required for those operations and improving a product yield, thus enabling it to be widely used as a method for producing an ingot by the VAR process and contributing to the development of the relevant technology.

Abstract: A heat exchanger system includes a first fluid layer defining a first flowpath for a gas, a second fluid layer defining a second flowpath for a liquid, a first vapor cycle layer located between the first fluid layer and the second fluid layer for enabling heat transfer between the first and second fluid layers, a first boundary wall defining a shared boundary between the first fluid layer and the first vapor cycle layer, and a second boundary wall defining a shared boundary between the second fluid layer and the first vapor cycle layer. The first vapor cycle layer includes a working medium configured to transfer heat through an evaporation and condensation cycle, and the working medium of the first vapor cycle layer is sealed between the first and second boundary walls.

Abstract: A heat exchanger for a vehicle engine includes a pair of tanks for supplying a coolant through a thermostat for adjusting opening/shutting depending on the temperature of the coolant and a water pump, and discharging the cooled coolant to an engine side; a header at one side coupled with the tank at one side, to which the coolant is supplied; heat exchange tubes which are structurally fastened to communicate with the heater at one end portion thereof, and arranged in parallel to a direction of driving wind; a header at the other side coupled with the tank at the other side, which is structurally fastened at the other end portion of the heat exchange tube to communicate therewith so as to discharge the coolant into the engine; and a core portion including fins fixedly brazed between the heat exchange tubes.

Abstract: The invention concerns a micro-heat exchanger having a microstructure of channels (2) arranged at least in one matrix element (1) in the form of a plate and circulating at least one coolant, said matrix element (1) having upper and lower surfaces (5, 6) as well as lateral surfaces (3, 4). The invention is characterized in that the channels (2) are open on the upper surface (5) and/or on the lower surface (6) and closed on the lateral surfaces (3, 4).

Abstract: A heat dissipation device includes at least two flattened heat pipes (11,12,12a) and a plurality of fins (20,20a) mounted on the heat pipes. The heat pipes (11,12,12a) have coplanar upper surfaces and coplanar bottom surfaces. The bottom surfaces of the heat pipes (11,12,12a) are for in direct contact with a heat source of an electronic device. The fins (20,20a) are mounted on the upper surfaces of the heat pipes (11,12,12a), and the fins are separated from the heat source by the heat pipes (11,12,12a). The heat pipes (11,12,12a) are closely connected together, without a significant gap therebetween.

Abstract: A method of manufacturing a heat dissipation device, the method includes the steps of: a) affording a base, a plurality of fins, a plurality of flakes and solder, wherein the base includes a soldering face at a top surface thereof and defines a plurality of through holes therein; b) adhering the flakes to the soldering face of the base for covering the through holes; c) placing the solder onto the soldering face of the base and placing the fins onto the soldering face, whereby the solder is sandwiched between the base and the fins; d) heating the heat dissipation device at a determined temperature to melt the solder; and e) cooling the heat dissipation device to solder the fins onto the base.

Abstract: A heat dissipation device comprises a radiator comprising a collar, a core received in the collar and a helical heat pipe embedded in a circumferential face of the core. The collar has a receiving hole and a plurality of fins extending radially and outwardly from an outer face of the collar. The core together with the heat pipe is received in the receiving hole of the radiator. The core has a flat bottom face and a top face opposite to the bottom face. The heat pipe is located between the radiator and the core and thermally contacts the collar of the radiator and the core. The heat pipe extends from the bottom face of the core to the top face of the core, and has a flattened bottom face coplanar with the bottom face of the core for contacting with an electronic device.

Abstract: A vapor chamber used for cooling an electronic component may have an evaporation surface and a condensation surface. A moving device may be provided to sweep condensed liquid from the condensation surface. Particularly, with alternate working fluids such as hydrofluoroethers, where the condensation resistance is a substantial portion of the overall resistance of the system, performance of the system may be dramatically improved through active condensation enhancement.

Abstract: A heat pipe has a wick of capillary structure formed on the inner wall of the heat pipe so as to form a working fluid path in the heat pipe, wherein the wick of the capillary structure is un-ringlike or various radially. The cross-section of the working fluid path in the heat pipe is in various shapes, such as in a shape of polygon, poly-petal, poly-serration, arc or semicircle. Thus, the thickness of the capillary wick structure on the inner wall of the heat pipe is various due to the shape of the working fluid path.

Abstract: A heat exchanger for exchanging heat between a liquid-containing medium and a gas comprises a medium inlet and a medium outlet and a flat heat exchanger mat, wherein the mat comprises a number of parallel, equidistant capillaries of heat-conducting material and wires of heat-conducting material which are attached in heat-conducting contact to the capillaries, extend in transverse direction relative thereto and have a mutual distance in the order of magnitude of the diameter of the wires, wherein gas can flow along the wires for heat exchange between this gas and the medium flowing through the capillaries, and wherein the gas flows along the mat and at least a substantial part of the gas is prevented from flowing through the mat, and the gas flows in longitudinal direction of the wires.

Abstract: A heat pipe apparatus for transferring heat from a heat source to a heat sink includes a hollow elongate sealed heat pipe having a hot end adapted for thermal coupling to the heat source, and having a cool end adapted for thermal coupling to the heat sink. A port is defined in a wall of the heat pipe, and a source of pressurized working fluid is connected to the port such that working fluid is admitted to an interior of the heat pipe at a working pressure selected such that working fluid in the interior of the heat pipe condenses at the working pressure and a desired temperature. Working fluid condenses at the cool end of the heat pipe, moves from the cool end of the heat pipe to the hot end of the heat pipe, and evaporates at the hot end of the heat pipe.

Abstract: The present invention provides a water-cooled vehicle LED (Light Emitting Device) heat dissipating device, structured from a light emitting device and a heat dissipating device, wherein the light emitting device includes light emitting members and a base plate, and the heat dissipating device includes a water pump device, a water storage device, a water guide member and a heat dissipating body. The heat dissipating body is disposed at one side of the light emitting device, and includes a front plate, a middle plate and a rear plate. Grooves are hollowed out of the front plate, the middle plate and the rear plate, which form a channel, a water inlet and a water outlet when assembled. The water pump device is used to pump water from the water storage device through the water guide member and the channel, thereby achieving objective of effectively dissipating heat.

Abstract: A heat exchanger has a plurality of tubes and a plurality of fins alternatively arranged to define a core portion of the heat exchanger. A side plate is arranged at opposite sides of the core portion. Each end of the tubes and side plates extend through a core plate. Each core plate mates with a respective tank to define a sealed chamber. The ends of the tubes are disposed within the sealed chamber. The ends of the side plates and disposed outside the sealed chamber. This allows for a non-brazed connection between the core plates and the side plates.

Abstract: A high-frequency, low-amplitude corrugated fin for a heat exchanger assembly includes a plate member that extends horizontally and vertically to define a reference plane. The plate member has a plurality of conduit portions, a first and second series of corrugated segments formed in the plate member. The first and second series of corrugated segments undulate generally equidistantly relative to and from the reference plane as viewed in cross-section. The plurality of conduit portions is inter-dispersed throughout the plate member among the first and second series of corrugated segments. Each one of the first series of corrugated segments extends at a first angle relative to horizontal and each one of the second series of corrugated segments extend at a second angle relative to horizontal such that individual adjacent ones of the first and second series of corrugated segments form at least a generally chevron-shaped configuration as viewed in plan view.

Abstract: Heat exchanger assemblies of increased strength are provided having louvered fins that achieve both high thermal efficiency and high strength simultaneously. By providing for a three-piece louvered fin, tube-fin heat exchangers having at least one three-piece single louver block, and, in particular, a streamlined inclined three-piece single louver block, exhibit fins with superior characteristics and overall strength for heat exchanger assembly of louvered fin design, with reduced areas or zones of boundary layer air.

Abstract: Heating, ventilation, air conditioning, and refrigeration (HVAC&R) systems and heat exchangers are provided which include dissimilar internal configurations. The heat exchangers include multiple sets of multichannel tubes in fluid communication with each other. One set of multichannel tubes contains flow channels of one shape and size while the another set of multichannel tubes contains flow channels of a different shape and/or size. The dissimilar flow channels within the multichannel tube sets allow each set of tubes to be configured to the properties of the refrigerant flowing within the tubes.

Abstract: An inexpensive heat exchanger is disclosed, wherein the heat exchanger is made up of a plurality of plates and each plate has at least one channel defined in the plate. The plates are stacked and bonded together to form a block having conduits for carrying fluids, and where each fluid is in thermal communication with the other fluids.

Abstract: A protected carbon steel pipe for conveying flue gases in a heat exchange apparatus, comprising an outer jacket made of carbon steel, which is provided internally with a plurality of contiguous sectors made of corrosion-resistant material and provided with variously shaped fins, a continuous layer made of corrosion-resistant material which is interposed and in contact between the outer jacket and the plurality of contiguous sectors being provided.

Abstract: Heat sinks for dissipating a thermal load are disclosed that include: a heat sink base capable of receiving a thermal load from a thermal source; heat-dissipating fins mounted on the heat sink base, each heat-dissipating fin enclosing a hollowed cavity inside the heat-dissipating fin; and a thermal transport within the hollowed cavity of each heat-dissipating fin, the thermal transport capable of convectively transferring the thermal load along a convective heat path within each heat-dissipating fin. Heat sinks for dissipating a thermal load may also include: a pair of electrodes inside each heat-dissipating fin electrically connected to the thermal transport for generating an electric current through the thermal transport; and a magnet mounted adjacent to the heat-dissipating fins for generating a magnetic field through the thermal transport, the magnetic field passing through the electric current and oriented to induce a force on the thermal transport along the convective heat path.

Abstract: The invention relates to a device for tempering and ventilating of motor vehicles with an air inlet opening and an air outlet region, wherein air flows are distributed into different vehicle regions. The device is provided with a basic casing, through which a partition extends to divide the flow path of the air from the air inlet opening to the air outlet region into two flow paths. In one flow path, a waste heat exchanger is arranged to heat the air.

Abstract: A method and apparatus for heating a substrate is provided herein. In one embodiment, a substrate heater includes a vessel having an upper member including a top surface for supporting a substrate thereon; a liquid disposed within and partially filling the vessel; and a heat source for providing sufficient heat to the liquid to boil the liquid. Optionally, a pressure controller for regulating the pressure within the vessel may be provided. The substrate is heated by first placing the substrate on the support surface of the vessel of the substrate heater. The liquid contained in the vessel is then boiled. As the liquid is boiling, a uniform film of heated condensation is deposited on a bottom side of the support surface. The heated condensation heats the support surface which in turn, heats the substrate.

Abstract: An auxiliary braking device can be used for wellhead applications having a progressive cavity pump. A housing of the device independently mounts on the pump's existing drive using a mounting member, and an adapter on the housing connects to a rotatable drive shaft of the pump. A hydraulic motor on the housing has a motor shaft mechanically coupled to the adapter by a plurality of gears or the like. A control valve couples to the hydraulic motor and operates to control communication of hydraulic fluid through the hydraulic motor, thereby controlling rotation of the rotatable shaft. A controller and electric sensors can operated the control valve in response to the sensed rotation of the shaft. Alternatively, mechanical mechanisms can operate the control valve in response to the rotation of the drive shaft.

Abstract: A drilling flange and an independent screwed wellhead provides a metal-to-metal seal that supplements the traditional elastomeric O-rings for providing a fluid seal between the drilling flange and the wellhead. The metal-to-metal seal may be achieved using a metal ring gasket or two contacting metal surfaces that are machined to required tolerances and are configured to be forced together when the drilling flange is mounted to the wellhead. The metal-to-metal seal ensures a fluid seal between the flange body and the wellhead in the event that the O-rings malfunction or are destroyed by fire.

Abstract: Methods and apparatus are disclosed for recovering magnetically attractable wellbore casing fragments from drilling fluid used in hydrocarbon-producing formations.

Abstract: A technique enables sensing one or more wellbore parameters along a specific well zone. A section of instrumented coiled tubing is provided with a sensor array extending along its exterior. The sensor array is designed to sense well fluid related parameters and may comprise an optical fiber sensor. A cross-over allows the sensor array to communicate with a surface location via a control line routed along a coiled tubing interior.

Abstract: Radial expansion of a wellbore casing against a formation.

Abstract: A sampling system and method for use in pipes or in boreholes beneath the earth's surface, including the use of flexible borehole liners, the liners provided with a diffusion barrier to prevent contamination of fluid samples obtained by the system and method. There is provided a flexible diffusion barrier in the construction of a flexible fluid sampling liner, so as to nearly eliminate concern for diffusion transport into or out of the liner. The flexible diffusion barrier may be incorporated into and constructed with known devices, called spacers, in use with flexible borehole liners. The diffusion barrier according to the present disclosure is attached or secured by a suitable means to the interior surface, or the exterior surface, or both surfaces, of the flexible borehole liner. In one embodiment, a spacer with a diffusion barrier prevents both the diffusion into the liner, and the diffusion out of the liner, in the interval subtended by the spacer length.

Abstract: Methods and apparatus for harvesting energy while moving a tool through a well are shown and described. The harvested energy can be used by the tool to perform work once it reaches an intended location in the well, or along the way. A considerable amount of potential energy is typically lost by oilfield tools as they move down through a borehole. Methods and apparatus described herein recover and/or store some of the energy during the downward movement of the tool.

Abstract: Methods for treating a tar sands formation are described herein. The tar sands formation may include dolomite and hydrocarbons. Methods may include providing heat at less than the decomposition temperature of dolomite from one or more heaters to at least a portion of the formation. At least some of the hydrocarbon fluids are mobilized in the formation. At least some of the hydrocarbon fluids may be produced from the formation.

Abstract: Methods of using geothermal energy to treat subsurface formations are described herein. Methods for using geothermal energy to treat a subsurface treatment area containing or proximate to hydrocarbons may include producing geothermally heated fluid from at least one subsurface region. Heat from at least a portion of the geothermally heated fluid may be transferred to the subsurface treatment area to heat the subsurface treatment area. At least some hydrocarbon fluids may be produced from the formation.

Abstract: A technique that is usable with a well includes running screen assemblies into the well on a base pipe. Each screen assembly is associated with a different zone of the well to be gravel packed. During gravel packing of the well, the screen assemblies may be selectively configured to contain pressure without running a tool inside the base pipe to form a fluid seal.

Abstract: Casing expansion and formation compression for permeability plane orientation. A method of forming at least one increased permeability plane in a subterranean formation includes the steps of: installing a casing section in a wellbore intersecting the formation; expanding the casing section in the wellbore; and then injecting a fluid into the formation, the injecting step being performed after the expanding step is completed. Another method includes the steps of: applying an increased compressive stress to the formation, the compressive stress being radially directed relative to a wellbore intersecting the formation; and then piercing the formation radially outward from the wellbore, thereby initiating the increased permeability plane.

Abstract: A fluid loss control pill or solution includes a polymer having a functional group that can be hydrolyzed by a base or a nucleophile. A method for fluid loss control in a subterranean formation includes placing a fluid loss control pill or solution in a wellbore penetrating the subterranean formation, wherein the fluid loss control pill or solution comprises a polymer having a functional group that can be hydrolyzed by a base or a nucleophile; and converting the polymer into a soluble form by hydrolyzing the functional group with a base or a nucleophile, when fluid loss control is no longer needed.

Abstract: A seal comprising a polymeric material having a first swelling phase having a first swelling characteristic and a second swelling phase having a second swelling characteristic, the first swelling characteristic is greater than the second swelling characteristic is utilized to seal an upper portion from a lower portion of a wellbore. A wellbore seal tool is further disclosed comprising a swellable layer, a supporting assembly disposed adjacent the swellable layer, and an inflatable bladder.

Abstract: A differential filter includes a swellable polymer that swells after contacting water such that permeability of the differential filter is reduced. A method of controlling water production in a well includes deploying a differential filter downhole; and performing a downhole operation, wherein the differential filter comprises a swellable polymer that swells after contacting water such that permeability of the differential filter is reduced.

Abstract: A technique is provided for controlling actuation of a well component. A resistance device is deployed in a tool string and connected to a well tool to be actuated. The resistance device comprises a deformable body and a deforming member that move relative to one another during actuation of the well tool. Deformation of the deforming member provides constant resistance and consequent control over component actuation.

Abstract: A method to clean a wellbore and the near wellbore area adjacent to the wellbore of a hydrocarbon bearing formation adjacent to the production zone of the wellbore is provided. A method to clean a casing inserted into a wellbore is also disclosed. A method for cleaning a wellbore of fracturing fluid, with or without proppant is also disclosed. Each of the methods includes the steps of injecting either liquid carbon dioxide or a treatment medium comprising liquid carbon dioxide into a wellbore through tubing such that the location at which the treatment medium is administered may be controlled. In some embodiments, pressure within the wellbore is regulated in order to either maintain the treatment medium in the liquid state, or allow at least a portion of the treatment medium to vaporize upon introduction into the wellbore. Once the treatment medium has at least partially vaporized it will loosen and/or entrain undesirable materials from within the wellbore or casing.

Abstract: An apparatus for deployment of a reagent downhole includes a housing configured to move in a borehole; a chamber for storing the reagent, wherein the chamber is disposed in the housing and has one or more outlets for dispensing the reagent; a piston configured to move in the chamber; and a trigger mechanism. A method for deploying a reagent downhole includes disposing a tool downhole, wherein the tool comprises a canister storing the reagent, wherein the canister includes a housing configured to move in a borehole, a chamber for storing the reagent, wherein the chamber is disposed in the housing and has one or more outlets for dispensing the reagent, a piston configured to move in the chamber, and a trigger mechanism; and activating the trigger mechanism to move the piston to deploy the reagent.

Abstract: A method to clean a wellbore and the near wellbore area adjacent to the wellbore of a hydrocarbon bearing and/or coal bed methane formation adjacent to the production zone of the wellbore is provided. Specifically, a method for removing liquids such as water and/or oil from the near wellbore formation is provided. Furthermore, A method to clean a casing inserted into a wellbore is also disclosed. A method for cleaning a wellbore of fracturing fluid, with or without proppant is also disclosed. Each of the methods includes the steps of injecting either liquid carbon dioxide or a treatment medium comprising liquid carbon dioxide into a wellbore through tubing such that the location at which the treatment medium is administered may be controlled. In some embodiments, pressure within the wellbore is regulated in order to either maintain the treatment medium in the liquid state, or allow at least a portion of the treatment medium to vaporize upon introduction into the wellbore.

Abstract: A method, system and apparatus associated with the production of hydrocarbons are described. The apparatus comprising a joint assembly comprising a main body portion having primary and secondary fluid flow paths, wherein the main body portion is attached to a load sleeve assembly at one end and a torque sleeve assembly at the opposite end. The load sleeve may include at least one transport conduit and at least one packing conduit. The main body portion may include a sand control device, a packer, or other well tool for use in a downhole environment. The joint assembly also includes a coupling assembly having a manifold region in fluid flow communication with the second fluid flow path of the main body portion and facilitating the make-up of first and second joint assemblies with a single connection. The coupling assembly may also include a torque spacer to help control fluid flow relationships.