Abstract: A method of sealing a printing plate, such as a photopolymer printing plate, to a carrier sheet. A UV-curable adhesive resin is applied to the parameter of the printing plate once positioned on the backing carrier sheet and the resin is cured using ultraviolet radiation. The curing time of less than ten minutes is significantly shorter than that of conventionally used sealants and is more resistant to environmental factors caused by use of the plate and backing during printing.

Abstract: Disclosed herein is a method of manufacturing a touch screen, including; preparing two sheets of transparent substrate on which transparent electrodes are formed; preparing a substrate on which a release film is formed; printing dot spacers on the release film and curing the dot spacers; transferring the dot spacers to the transparent electrode by stacking the substrate on the transparent substrate so that the dot spacers are in contact with the transparent electrode; and bonding the outer sides of the two sheets of transparent substrates by an adhesive layer so that the transparent electrodes formed on the two sheets of transparent substrates face each other. The dot spacers are previously cured on the release film and then transferred to the transparent electrode, thereby making it possible to prevent the transparent electrode from being damaged due to a curing process of the dot spacers.

Abstract: A cementitious composition includes at least one cementitious material, at least one aggregate, from about 0.2% by weight to about 5% by weight of at least one superplasticizer, and from about 0.1% by weight to about 5% by weight of at least one water retention agent. The composition, upon mixing with an aqueous component, has an initial viscosity of no greater than about 150,000 cps, and a 20 minute viscosity of no less than about 250,000 cps.

Abstract: Methods and systems for controlling temperatures in plasma processing chamber for a wide range of setpoint temperatures and reduced energy consumption. Temperature control is coordinated between a coolant liquid loop and a heat source by a control algorithm implemented by the plasma processing module controller. The control algorithm may completely stop the flow of coolant liquid to a temperature-controlled component in response to a feedback signal indicating an actual temperature is below the setpoint temperature. The control algorithm may further be based at least in part on a feedforward control signal derived from a plasma power or change in plasma power input into the processing chamber during process recipe execution.

Abstract: A fixture for etching PCD drill inserts is provided. The fixture design allows the fixture to be injection molded, significantly reducing costs and allowing the fixture to be disposed of after a single use. The fixture allows for faster use and more accurate etching of the PCD insert.

Abstract: An adhesive bonding apparatus is provided. Namely, an apparatus for adhesively bonding a spectacle lens of rimless spectacles to connecting elements of a bridge and a lug of the rimless spectacles. The apparatus comprises a cylindrical holding pin arranged to be rotatable about its axis and axially movable in a bore of a frame of the apparatus. The holding pin is designed to centrally hold the lens such that its slightly convex front side substantially extends perpendicularly to the pin axis. In a plane perpendicular to the pin axis two straight supporting strips extend in parallel to each other and on both sides of the pin axis from which the supporting strips are equally spaced apart. The supporting strips are arranged at the frame such that the front side of the lens held by the holding pin faces the supporting strips.

Abstract: A laminating device is provided that can increase the rate of rise of a laminating temperature and keep the laminating temperature stable without using a temperature control system for a heat source. The laminating device for stacking and bonding a laminate film 11 coated with a hot-melt adhesive and a sheet 12 has a thermal pressure bonding and conveying device 10 that thermally pressure-bonds the laminate film 11 and the sheet 12 while stacking and conveying them.

Abstract: A rotary lamination apparatus has a die assembly rotatable about an axis and a mounting table received in an axial hole extending through the die assembly. Through rotation of the die assembly, punched core pieces are mounted on the mounting table while being rotatively offset. A drive mechanism is employed to rotate the mounting table integrally with the die assembly about the axis of the die assembly.

Abstract: Method and apparatus for curing composite material to form composite structures are provided. A curing tool in one embodiment includes cured nano tube impregnated resin, at least two conductors formed in the nano tube impregnated resin, at least one layer of cured composite material and at least one insulation layer separating the cured composite material from the nano tube impregnated resin.

Abstract: The invention relates to an apparatus (1) for coating workpieces (2) which are preferably made at least in sections of wood, wood materials, plastic or the like, comprising a feed apparatus (10) for feeding a coating material, an activation region (20) for activating the fed coating material (2), and a pressing apparatus (40) for pressing the activated coating material (2) onto a workpiece (3). The apparatus according to the invention is characterised in that at least the activation region (20) with the pressing apparatus (40) and the workpiece (3) can be moved and/or rotated relative to one another in a plane of movement perpendicular to the coating plane in the course of the coating process.

Abstract: A hand-held labeler is described with a casing having an upper opening in which a label roll is rotary-mounted on a holder that can be moved up and down. A cap is hinged on the casing at the upper opening. When the cap is closed, it fully surrounds the label roll. The cap is coupled with the holder by a link guide in such a way that, by manually swinging the cap, the holder can be moved out of the opening and into the opening while the spacing between the cap and a label roll seated on the holder can be varied. When the cap is fully opened, the label roll is exposed and can easily be taken off the holder or attached to the holder.

Abstract: A glass manufacturing device includes a main body defining a working space, a fixing device and a grit blower in communication with the working space. The fixing device includes a first fixing assembly, a second fixing assembly, and a locking assembly. The first and second fixing assemblies are rotatably connected with each other and used for clamping a glass substrate. The first fixing assembly includes a number of shielding elements spaced from each other. The locking assembly is used for locking the first and second fixing assemblies. The grit blower is disposed opposite to the first fixing assembly and used for blasting grit on the glass substrate, and thus the portions of the glass substrate which are not shielded by the shielding elements are cut off during the process of grit-blasting. Remaining portions of the glass substrate shielded by the shielding elements are the desired product.

Abstract: A clutch mechanism for a tape dispenser, for example, includes first and second coaxially disposed rotating disks, a pressure wheel, and a friction element. The first rotating disk defines at least one protrusion. The pressure wheel is disposed between the first and second rotating disks and is operably engaged by the at least one protrusion carried by the first rotating disk. The protrusion is movable between first and second rotational positions relative to the pressure wheel. The friction element is disposed between the pressure wheel and the second rotating disk such that the friction element generates a first frictional force between the pressure wheel and the second rotating disk when the protrusion is in the first rotational position and a second frictional force between the pressure wheel and the second rotating disk when the protrusion is in the second rotational position.

Abstract: A linear friction welding system in one embodiment includes a ram configured to vibrate along a welding axis, at least one rocker arm with a first end portion spaced apart from the welding axis and constrained against movement along the welding axis, and a second end portion which is movable along the welding axis, and a first welding component support member configured to hold a first welding component, the first welding component support member operably connected to the ram and supported by the second end portion of the at least one rocker arm, such that vibration of the ram along the welding axis causes the location of the first welding component support member along an axis orthogonal to the welding axis to vary.

Abstract: Disclosed is a tool that is designed to spread a tire to allow for the removal and installation of a rim lock, inner tube, or valve stem during a tire change or repair. The bead bender tool can be used by bicyclists, motorcyclists, and by shop mechanics allowing users to complete tire repairs without injury to the user's fingers. The bead bender tool may be comprised of a handle having a centerline and a shank with a rounded end-tip. The shank comprises at least one but preferably two compound bends, (a first and a second 90 degree bend), and a first, second and third shank portion. First shank portion and second shank portion are perpendicularly oriented to each other and third shank portion is perpendicularly oriented with the second shank portion. Third shank portion is orientated off-set parallel to first shank portion. Third shank portion may threadably receive various lengths of fourth-shank-portions for use on various width tires.

Abstract: A window covering is provided with protected operating cords. Protective coverings are installed over the cords. The coverings are expandable to move with the window covering as it is raised and lowered. The protective coverings may include an accordion folded configuration, a cellular configuration, and protective coverings with a continuous slot that allows the covering to be installed in an existing window covering. The protective coverings do not interfere with operation of the window coverings.

Abstract: A universal external door/window sun-shading integration system for building includes a door/window frame (1), a door leaf/window sash (2), a screen window (3), a roller shutter (4), a ventilator (5), a concealed theft-proof device (6) and a controlling system, in which, the ventilator (5) is mounted in the door/window frame (1), the concealed theft-proof device (6) is provided at the outer side of the door/window frame (1), and the screen window (3), the roller shutter (4) and the ventilator (5) are controlled by the indoor controlling system.

Abstract: Presented is a system for controlling a roller shade. The system includes a flexible shade material having a lower end, a roller tube windingly receiving the flexible shade material, and a reversible motor for rotating the roller tube to move the lower end of the shade material between a first and second position. The system further includes an optical sensor for capturing an image frame of the shade material at a plurality of linear positions as the lower end of the flexible shade material moves from the first position to the second position. The system further includes a motor controller for controlling the reversible motor to move the lower end of the shade material from the first position to the second position using a variable linear velocity profile in response to position information obtained from the plurality of captured image frames.

Abstract: The present invention relates to a self-contained protection device (1, 1a-1b) for provisionally blocking a passage (10) such as a corridor, a door, or a window, characterized in that it includes at least one longitudinally-extendable bar (2, 2a-2b), preferably a telescopic bar, the extension thereof being actuatable by an actuator (3), said bar being capable of being removably locked in an extended configuration between two wall surfaces (10a, 10b) defining said passage, referred to as locking surfaces, said extendable bar supporting one or preferably a plurality of blocking member(s) (4) to form a protection screen (5, 5a, 5b) blocking said passage, in which said blocking member(s) is or are preferably removably fixed.

Abstract: Included are a windup device, a shade attached to the windup device so as to be drawn therefrom and housed therein, a stay attached to a drawing-side edge of the shade, a pair of runners respectively connected to both ends of the stay via first connecting parts, and a pair of guide rails respectively supporting the pair of runners in a movable manner. The first connecting part connects the stay and each of the runners so as to rotate relative to each other in such a manner that each of the guide rails is folded in a direction to approach the windup device.

Abstract: A rollable screen comprises a rotatable winding tube for a screen mounted for rotation in a stationary mounting assembly and a spring for loading said winding tube in a direction for winding the screen onto the winding tube. A first end of said spring is connected to the winding tube and a second end is connected to a mounting part positioned within the winding tube and connected to the stationary mounting assembly. Said mounting part comprises projecting locking elements for cooperation with corresponding locking members of the mounting assembly and for a rotation relative thereto between a first rotational position in which the mounting part can be inserted in or removed from the mounting assembly, and a second rotational position in which the locking elements and locking members prevent any translational movement of the rollable screen relative to the stationary mounting assembly.

Abstract: A control module may be used for raising and lowering a window shade. This configuration allows a user to pull the operating cord a predetermined distance to raise the window shade, then release the operating cord until it has retracted, and then pull the operating cord another predetermined distance to raise the window shade again. A brake mechanism is operably connected to a brake release and configured to lock or unlock the drive axle. A clutch is adapted to be mounted on the axle for selectively engaging the cord drum to the axle. The cord drum may rotate independent of the drive axle when a clutch is disengaged from the drive axle. As a result, movement of the operating cord will not cause the window shade to raise while the clutch is disengaged. When the clutch is engaged with the drive axle, the cord drum and adapter sleeve may rotate together to drive the rotation of the drive axle for raising the window shade.

Abstract: A restrainer (1. 100) comprises a first arm (3, 103) and second arm (3, 103), and a retaining arm (2, 102) co-operating with the second arm (4) to urge any part of a blind contained between the first arm (2, 103) and the retaining member (2, 102) towards the first arm (3, 103) and to hold said part in place. In a particular arrangement the third or retaining arm (2) has a T-shaped end piece (17) which engages with the surface of grooves associated with the second arm (4) to lock the third (or retaining) arm in position to retain a part of the blind between the third (or retaining) arm (2) and the first arm (3). The part of the blind can be the blind cord or chain, the blind panels or vanes (14) between the retaining arm (2) and bars (5); in the latter case the retaining member acts upon the panel or vanes (14) to contain the blind cord or chain between bars associated with the first member, the second arm and the blind panels or vanes themselves.

Abstract: A structured-core laminate panel can be made in an efficient, structurally sound manner without the use of adhesives (film or liquid forms) using materials with different melt or glass transition temperatures. In one implementation, a manufacturer positions one or more resin substrates about a structured core, which comprises a relatively high melt or glass transition temperature compared with that of the one or more resin substrates. The manufacturer heats the assembly to at least the glass transition temperature of the resin substrates, but not to the melt or glass transition temperature of the structured core. This allows the one or more resin substrates to melt and bond (mechanically, chemically, or both) to the structured core on one side (or inner surface), while maintaining a substantially planar or original conformation on an opposing side (or outer surface).

Abstract: There is a need for a window blind assembly for a vehicle, in which vibration and noise are reduced when a shade curtain moves. The window blind assembly for a vehicle includes: a main frame; a rotary shaft rotatably arranged in the main frame; a pair of guide rails arranged in the main frame and formed with a guide groove; a shade curtain supporter movably coupled to the pair of guide rails; a shade curtain including one side end portion connected to the rotary shaft and rolled into the rotary shaft, and the other side end portion connected to the shade curtain supporter and unrolled as the shade curtain supporter becomes apart from the rotary shaft; and a driving unit providing driving force to move the shade curtain supporter along the guide rail, the driving unit including: a motor; a gear assembly connected to the motor; and a first wire having a closed-loop shape and connected to the gear assembly so that driving force of the motor can be transferred to the shade curtain supporter.

Abstract: There is a need for a window blind assembly for a vehicle, in which vibration and noise are reduced when a shade curtain moves and which is convenient to be transported. The window blind assembly tor a vehicle includes: a main frame; a pair of connection units arranged in the main frame; a rotary shaft rotationally arranged in the connection units; a pair of guide rails rotationally arranged in the connection units and formed with guide grooves; a shade curtain supporter movably coupled to the guide grooves of the pair of guide rails; a shade curtain including one side end portion connected to the rotary shaft and rolled into the rotary shaft, and the other side end portion connected to the shade curtain supporter and unrolled as the shade curtain supporter becomes apart from the rotary shaft; and a driving unit providing driving force to move the shade curtain supporter along the guide rail.

Abstract: Presented is a method for synchronizing movement of a plurality of roller shades each disposed at a first position to a common second position. The method includes obtaining information related to the position of each of the plurality of roller shades with a respective one of a plurality of optical assemblies, and moving each of the plurality of roller shades from the first position to the common second position in response to the respective obtained position information so that each of the plurality of roller shades arrives at the common second position at the same time.

Abstract: Methods and apparatus are provided for exploiting coated paper products such as coated paper cups. End products include biofuels that have a high energy density. The biofuels may be mixed with coal or other fuels and have good binding characteristics. In some embodiments, useful chemicals such as HMF are produced. The methods involve heat treatment at relatively mild temperatures and pressures under acidic conditions.

Abstract: A method is disclosed for optimization of continuous digestion process. Exemplary embodiments can control a delignification process in a continuous pulp digester in an optimal way for different pulp grades taking into account process disturbances and model uncertainties. This can be achieved by customizing a generic mathematical model for a continuous digestion process which runs through a software application on a dedicated electronic device. The model can be updated periodically based on on-line information, and used with a plant optimization component involving multiobjective optimization to evaluate optimal set points for the controllers. A system is also disclosed for optimizing control of a continuous pulp digester.

Abstract: A process is provided for making a fluff pulp sheet, comprising: contacting at least one cationic dye and at least one debonder surfactant with a composition comprising fluff pulp fibers, to form a fluff pulp mixture; forming a web from the fluff pulp mixture; and drying the web, to obtain the fluff pulp sheet. A fluff pulp sheet is also provided, comprising a web comprising fluff pulp fibers; at least one cationic dye; and at least one debonder surfactant. Products and uses of the fluff pulp sheet are also provided.

Abstract: A twin wire press for dewatering solid-liquid suspensions, such as pulp suspensions, between top and bottom webs is described herein which includes consecutive primary, secondary and tertiary dewatering sections. The primary dewatering section includes a wedge area. The secondary dewatering section is positioned adjacent to the primary section downstream therefrom and includes grooved rolls in an s-roll configuration. The tertiary dewatering section includes rolls in a scissor-nip configuration. The press rolls in the secondary and tertiary section are all supported onto a frame. Whenever maintenance is to be performed on any one of the grooved rolls or on the press roll assemblies, an overhead crane can for example be used since no frame structure is provided on top thereof.

Abstract: The invention relates to an arrangement for feeding a fibrous suspension (1) to at least one headbox (8) of a paper or cardboard machine with at least one diluting device (5), in which the fibrous suspension (1) is produced by mixing a high-consistency suspension (6) with a diluting liquid, wherein the diluting liquid is formed at least in part by backwater (2) of the paper or cardboard machine, the backwater (2) is pre-degassed in at least one open channel (3) and subsequently is guided into a diluting device (5) via a degassing device (4). The expenditure is to be reduced thereby in that the potential energy of the fibrous suspension (1) in the channel (3) is not above the potential energy of the fibrous suspension (1) in the diluting device (5) and the pressure at the outflow of the degassing device (4) is between ?0.3 and 1 bar or that the potential energy of the fibrous suspension (1) in the channel (3) is above the potential energy of the fibrous suspension (1) in the diluting device (5).

Abstract: A sheet of a material is disposed in a melt of the material. The sheet is formed using a cooling plate in one instance. An exciting coil and sensing coil are positioned downstream of the cooling plate. The exciting coil and sensing coil use eddy currents to determine a thickness of the solid sheet on top of the melt.

Abstract: The method for reducing interstitial elements in alloy castings which comprises the following steps: pouring the alloy for the formation of a casting; and allowing said alloy to cool. According to the method, at least a peripheral region of the casting is heated, so that the flux of interstitial elements is caused towards the at least one peripheral region. The method is achieved where most of the interstitial elements concentrate in at least one region in the surface region of the casting. At later stages these elements can be easily eliminated from the respective regions by means of a thermal surface treatment or surface machining of the casting.

Abstract: A reduced size vacuum die-casting machine wherein an amount of powder release agent which is fed to a mold cavity each time is stable and loss of velocity of the air flow for sucking out the powder release agent is difficult, the apparatus provided with a powder control valve which has a powder release agent passage through which a powder release agent passes and which moves back and forth inside of a sleeve to switch between a state communicating a discharge hole with a molten metal holding chamber and a state communicating a discharge hole with a powder release agent passage, the powder release agent passage of the powder control valve formed inside of the powder control valve, the inlet and outlet of the powder release agent passage being formed at the outer surface of the powder control valve.

Abstract: Equipment for the removal of billets (5) of aluminium after casting, comprising lifting billets out of a casting pit (2) after the end of the casting cycle and transferring the billets to the desired transport equipment (20) for transport on to a store or further treatment/processing. The equipment consists of a lifting device (6) with a gripping device (21) to retain a number of billets (5). The lifting device is arranged so that it can move over the casting pit and is designed to lift and move the stated number of billets, and a ramp (18) that extends from the casting pit to the transport equipment (20) and into contact with which the billet is designed to be brought and transported along in the direction of the transport equipment (20).

Abstract: In a state in which an insert is fitted to an inner portion of a main mold, a hole passing through from an outer portion of the main mold to a cavity of the insert is provided in the main mold to the insert. An extrusion pin bush is inserted into the hole from a side of an opening portion facing the outer portion of the main mold in the hole. A stopper, which is loosely inserted into an outer periphery of a base end side protruding to the outer portion of the main mold from an inner diameter portion of the extrusion pin bush of the extrusion pin, is attached by screw to a thread portion provided in the opening portion facing the outer portion of the main mold. The extrusion pin bush abuts on a locking portion provided on the side of the opening portion facing the outer portion of the main mold in the hole by the stopper.

Abstract: Disclosed are a method and a casting/rolling plant for producing hot-rolled metallic, particularly steel, strips (7) having great surface quality from slabs or flat thin bars (2, 2a) that are cast in a continuous casting process, descaling being performed based on a rotary descaling process. In order to take into account parameters which are not considered in prior art in addition to rotary descaling, the hydraulically oscillated permanent mold (9) travels along several different oscillation curves (16, 17, 18) while the oscillation marks are deep-cleaned by adjusting the oscillation pattern that is determined to be optimal for each casting material.

Abstract: In a method for producing a salt core for casting formed by a molten salt made of a salt mixture containing sodium salt, first, a melt is formed by heating a salt mixture. Next, a mold for core molding is heated to a temperature higher than about 0.52×Tm and lower than about 0.7×Tm. Note that Tm represents the liquidus temperature of the salt mixture as an absolute temperature (K). Then, the melt is poured under pressure into the mold heated as described above. A salt core for casting is molded by solidifying the melt inside the mold.

Abstract: The present inventions provide a method for forming molds and a core which generates no gases with bad effects on the human bodies while the binders are heated. In particular, the present inventions provide a method for forming molds and a core comprising an aggregate material mixture consisting of granular aggregate materials, wherein the aqueous binders and water are foamed with stirring, filled into a space for forming molds, and caked with an evaporating water component. In an embodiment, molds can be further cured by adding cross linking agents before and after they are taken out from the space for forming. Further, an aggregate material mixture for forming molds used for the method for forming molds of the present inventions is provided.

Abstract: The present invention features a thermal management system for a hybrid electric vehicle. Such a system includes a heater core supplies heat for heating the vehicle's interior by heat exchange between a coolant and air of the vehicle's interior, a coolant line fluidly coupling an engine and heater core so the coolant being circulated by a coolant pump passes there through. A bypass valve is located in the coolant line in proximity to the engine and is selectively opened and closed according to the on/off state of the engine and so that the coolant does not pass through the engine but passes through only the heater core in the engine off state. Such a system includes a heat exchanger fluidly coupled to another heat source so the coolant is heated by the heat exchanger and supplied to the heater core when in the off state.

Abstract: A device for cooling a battery or batteries of a motor vehicle, for example an electric vehicle, includes a temperature regulating unit including an evaporator that is used to cool the passenger compartment of the vehicle and arranged in a housing, the battery or batteries being contained in a case. The housing of the evaporator is connected to a conduit, an outlet of which is oriented towards a heat exchange area on at least one outer surface of the case containing the battery or batteries.

Abstract: In one embodiment, the invention is a mechanical and synthetic material composition using a cationic carbon base infrastructure that incorporates specially designed compartments for housing thermal modifying inserts. Using both the temperature regulating fabric and one of three optional inserts, depending on desired effect, in combination creates a suitable solution for temperature regulation. By placing the temperature modifying source in its assigned compartment in key locations allows for a transfer of energy throughout the fabrics construction like a conduit and in close proximity to the subject surface.

Abstract: The fresh air heat exchangers function to supply ventilation, heating and air purification. The device does this whether the building is occupied or empty. The outside air is drawn in, filtered, then passed through the heat exchanger where room air is passed adjacent to it and its heat is extracted and transferred to the incoming fresh air. The room air is subsequently exhausted outside. The preheated fresh outside air continues on to a hot water coil where it is additionally heated and then passed over a UV cell for purification. The purified heated air is introduced to the room. In the building unoccupied phase, room air is cycled back into the room without bringing fresh air in.

Abstract: A method of thermally cycling an object is provided which comprises alternately contacting the object with vapor from first and second liquid/vapor two-phase mixtures of a working fluid wherein the first mixture is at a higher temperature and pressure than the second mixture. An apparatus is also described which comprises a thermal chamber, a first reservoir comprising the first two-phase mixture, a second reservoir comprising the second two-phase mixture and conduits connecting the first reservoir and second reservoirs to the thermal chamber. The apparatus can be used to thermally cycle an object placed in the thermal chamber. An apparatus is also described which comprises a conduit connecting the vapor regions of the first and second reservoirs. The apparatus can be used to thermally cycle an object placed in the vapor region of the first reservoir. The object can comprise one or more layers of an electrically or magnetically polarizable material.

Abstract: A method and system for thermal management includes an engine heat exchanger configured to transfer waste heat from an engine to a heat transfer fluid and an engine exhaust heat exchanger coupled in flow communication with the engine heat exchanger wherein the engine exhaust heat exchanger is configured to transfer heat from an exhaust of the propulsive engine to the pumped heat transfer fluid. A bypass valve is coupled in parallel with the engine exhaust heat exchanger wherein the bypass valve is selectable to modulate a flow of the heat transfer fluid through the engine exhaust heat exchanger and a plurality of accessory heat exchangers that are coupled in flow communication with at least one of the engine heat exchanger and the engine exhaust heat exchanger and each of the plurality of accessory heat exchangers flow is controllable using a modulating valve.

Abstract: The disclosure relates to a plate heat exchanger in a sealed design, with a stacked arrangement comprising a front-side and a rear-side end plate, wherein at least one end plate is constituted as a connection plate, heat exchanger plates which are arranged and stacked between the front-side and the rear-side end plate, in such a way that cavities for accommodating a plurality of heat exchanger media are formed between the heat exchanger plates, and sealing elements which are disposed to seal the cavities, and a clamping device, configured to exert an external clamping pressure on the stacked arrangement for the tensioning, wherein the clamping device is formed to encompass the stacked arrangement in a form-fit manner at least in sections, namely at least in a corner region of the stacked arrangement.

Abstract: A spiral-path chimney-effect heat sink cools an LED light bulb by increasing the length of the path over which heated air rises between two coaxial tubes. A tube top is attached to one end of the tubes. A light emitting diode (LED) is thermally coupled through the tube top to the inner tube. There are window openings below the rim where the outer tube attaches to the tube top. A convection current path guide is disposed between the inner and outer tubes. The convection current path guide is a spiral wire that causes rising air to follow a longer spiral path around the heated inner tube before the air exits the heat sink through the window openings. An Edison screw base is attached to the end of the inner tube opposite the end attached to the tube top. The coaxial tubes can be cylindrical tubes, conical tubes or square tubes.

Abstract: A data center includes a portable container, a number of server systems, and a number of nozzles. The server systems are installed in the container. Two opposite sides of each server system are respectively a hot aisle and a cold aisle. The nozzles are arranged in the ground under the cold aisles to supply cold airflow. The nozzles of each cold aisle are arranged in a number of rows parallel to two adjacent server systems. Heights of the cold airflow from the nozzles of each cold aisle form a step mode from the two adjacent server systems to the middle of the corresponding cold aisle.

Abstract: A tool for cleaning heat exchangers may include a fluid flow control valve, a hollow elongated stem attached to the valve and a hollow fan head attached to the hollow stem. The fan head may have a fan-head axis oriented at an oblique angle relative to a stem axis of the stem.