Abstract: In a method for the production of a dental moulded part, in which there is produced a coquille (10) having a hollow space (11) the form of which corresponds in substance to the form of a model (2) of the moulded part, and in which by filling of the coquille hollow space (11) with a hardenable material a casting (20) is produced and hardened, the model (2) is provided with an offset (2a, 2b, 2c) which is taken into account in the production of the coquille (2), wherein after the hardening of the casting (20) this is worked by material removal to produce the dental moulded part.

Abstract: A casting shakeout apparatus comprises: a first unit for vibrating a supporting member on which a casting is placed and a second unit for applying impact or vibration to the casting, wherein the second unit can move between two positions, one of which is an evacuation position for allowing the casting to be loaded and unloaded and a work position for applying impact or vibration.

Abstract: A method of continuously casting metal strip, as well as an apparatus for carrying out the process, wherein the process includes the steps of: providing a pair of casting rolls operating at a selected rotational speed and the two casting rolls being spaced apart from each other at a pre-selected distance; introducing molten metal between the two casting rolls; monitoring the separation force exerted on the two casting rolls by the molten metal, and adjusting the rotational speed of the two casting rolls in response to the magnitude of the separation force wherein the rotational speed of the two casting rolls is reduced when the separation force is below a lower value and the rotational speed of the two casting rolls is increased when the separation force is above an upper value; and processing the strip by removing any shape defects therein.

Abstract: The invention relates to a tool for producing cast components, especially gas turbine components, from reactive nonferrous molten metals, especially titanium alloys, said tool being embodied as a casting mould. According to the invention, at least one region of the casting mould (10) that comes into contact with the reactive nonferrous molten metal consists of yttrium oxide, magnesium oxide and calcium oxide.

Abstract: A heat exchanger comprising a main heat exchange housing, a cooling air inlet line and a hot air inlet line to bring a cooling airflow and a hot airflow in the main housing. A heat pre-exchanger is disposed upstream from the main housing, the heat pre-exchanger being able to be crossed by the cooling airflow and the hot airflow prior to the main housing. The invention also relates to a propulsion unit and an aircraft comprising such a heat exchanger.

Abstract: A temperature control system (100) includes a heating system (1), a cooling system (2) and a control unit (3). The heating system has a heated fluid. The heated fluid is heated by a solar energy for increasing the mold temperature. The cooling system has a cooled fluid. The cooled fluid cools for decreasing the mold temperature. The control unit controls the heating system and the cooling system to be opened or closed.

Abstract: An integrated liquid cooling system (100) includes a heat absorbing member (10), a heat dissipating member (20) and a pump (15). The heat absorbing member defines therein a fluid flow channel (115) for passage of a coolant. The heat dissipating member is mounted to and maintained in fluid communication with the heat absorbing member. The pump is received in the heat dissipating member and is maintained in fluid communication with the heat absorbing member and the heat dissipating member. The pump is configured for driving the coolant to circulate through the heat absorbing member and the heat dissipating member. The components (i.e., the heat absorbing member, the heat dissipating member and the pump) of the liquid cooling system are combined together to form an integrated structure without utilizing any separate connecting pipes.

Abstract: A liquid-cooled heat dissipation system includes a heat absorber; a heat dissipating member; two connecting pipes connecting the heat absorber and the heat dissipating member; and a working fluid filled in the heat absorber, the heat dissipating member, and the connecting pipes. The working fluid is capable of circulating in the circuit. The working fluid includes a base fluid, a plurality of nanoparticles and a protective agent dispersed in the base fluid. A percentage by weight of the nanoparticles in the working fluid is in the range from 0.1% to 3%.

Abstract: A heat-dissipation structure mainly including a heat-absorbing head, a heat pipe, and a tube jacket is provided. The heat pipe includes a heated end and a cooling end, wherein the heated end of the heat pipe is connected to the heat-absorbing head, and a flange is projected form the surface of the heat pipe adjacent to the cooling end. A joint is disposed on the cooling end of the heat pipe, and is connected to the tube jacket through the opening, such that the cooling end is sealed inside the tube jacket, and the flange of the heat pipe is tightly fastened between the joint and the opening. The heat-dissipation structure is used to rapidly conduct the waste heat generated by a processing chip to the tube jacket via the heat pipe.

Abstract: A method and system for cooling a heat source are presented. The system includes a fluid heat exchanger, a pump, a thermoelectric device having a cooling portion and a heating portion, and a heat rejector configured to be in thermal contact with at least a portion of the heating portion of the thermoelectric device. The pump is coupled with the fluid heat exchanger and configured to pass a fluid therethrough. The thermoelectric device is configured along with the heat exchanger in a cooling system to enhance the cooling efficiency of the system.

Abstract: A heat pipe (50) and a method (100) of producing the heat pipe are disclosed. The method includes the following steps: (1) inserting a mandrel (10) into a hollow metal casing (20) with a porous structure (30) combined to an outer surface of the mandrel; (2) filling powders (40) into a space formed between the hollow metal casing and the porous structure; (3) sintering the filled powders; (4) drawing the mandrel out of the hollow metal casing; and (5) sealing the hollow metal casing with a working fluid filled therein. The heat pipe produced by this method includes a composite wick structure (60) arranged in the hollow metal casing. By using this method, the mandrel can be easily drawn out of the hollow metal casing after the filled powders are sintered.

Abstract: A heat dissipation device includes a first assembly having a first shell portion and a wick layer formed thereon, a second assembly having a second shell portion and a clapboard formed thereon, and a circumfluence cavity and an evaporation cavity formed by coupling the first assembly and the second assembly together and separated by the clapboard. The circumfluence cavity and the evaporation cavity are communicated via the wick layer.

Abstract: An integrated liquid cooling system (100) includes a heat absorbing member (10), a heat dissipating member (20) and a pump (15). The heat absorbing member defines therein a fluid flow channel (115) for passage of a coolant and a pump receiving housing (120) adjacent to the fluid flow channel. The heat dissipating member is mounted to and maintained in fluid communication with the heat absorbing member. The pump is received in the pump receiving housing of the heat absorbing member. The pump is configured for driving the coolant to circulate through the heat absorbing member and the heat dissipating member. The heat absorbing member, the heat dissipating member and the pump of the liquid cooling system are combined together to form an integrated structure without utilizing any connecting pipes.

Abstract: An assembly for high performance cooling of electronics is described that includes a container for heat transfer liquid in which complex electronic assemblies are immersed. The electronics are sealed inside the liquid container such that an electrical connector protrudes to the exterior of the container. A thermally conductive plate is made part of the liquid filled container assembly such that a portion of the plate is in contact with the liquid and a portion of the plate protrudes from or forms part of the exterior of the container.

Abstract: The present invention discloses heat transfer tubes for evaporators in air conditioning and refrigeration systems, comprising: a tube body (1); outer fins (2) extending on an outer wall surface of the tube body (1) and having outer fin walls opposite to the outer fin walls of the adjacent outer fins; channels (6) located between the adjacent fins (2) so as to constitute channel chambers; fin top platforms (3) on respective tops of the outer fins (2), the fin top platforms (3) including fin top edges (3a) extending from both sides of the fin top platforms (3) so that the channel chambers take a form of a cavity structure as a whole; channel chamber openings constituted by gaps between the adjacent fin top edges (3a) of the fin top platforms (3) of the outer fins; and lateral fins (4) arranged on portions or substantially middle portions of the outer fin walls of the outer fins (2) in a height direction of the outer fins (2) and at intervals in an spreading direction of the outer fins (2), so that the cavity st

Abstract: A heat exchanger is provided for dissipating heat from a fluid. The heat exchanger includes a plurality of stacked pairs of plates. Each pair of plates includes a first plate and a second plate. The first plate extends along a first axis and has first and second sides. The first side of the first plate has a generally sinusoidal recess therein that extends along the first axis. The second plate extends along a second axis and has first and second sides. The first side of the second plate has a generally sinusoidal recess therein that extends along the second axis and that is out of phase with the sinusoidal recesses in the first side of the first plate. The first side of the first plate and the first side of the second plate form a mating relationship with each other such that the recess in the first side of the first plate communicates with the recess in the first side of the second plate at a plurality of axially spaced locations.

Abstract: A shell-and-tube type heat exchanger of the smallest possible length necessary for heat exchange is disclosed which is capable of obtaining uniform distribution of flow of a shell side fluid and substantially eliminating the structural restriction imposed on the shell side. This shell-and-tube type heat exchanger is provided with one annular conduit furnished with not less than two partitions concurrently serving as an expansion joint for introducing and discharging a shell side fluid and allowing the flow path for said shell side fluid to be separated into an introducing part and a discharging part and which comprises a place having no array of heat-transfer tubes in the flow path for said shell side fluid. It prevents the equipment from necessitating an unnecessary enlargement due to the structural restriction on the shell side and enables the shell side fluid to produce a uniform flow.

Abstract: A radiant heating system is provided. The system includes a tube, a heat radiating panel, a fastener, and a heat transfer device. The heat radiating panel includes a heat radiating portion, and a channel extending from the heat radiating portion. The channel is sized to hold a section of the tube. The heat radiating portion may further include a plurality of slats extending from a substantially planar surface. To improve the heat distribution, the plurality of slats extend from the surface at an angle less than 90 degrees. The fastener is used to attach the heat radiating panel to the section of the tube. The heat transfer device includes an outlet valve operably coupled to supply a heat transfer medium to a first end of the tube, and an inlet valve operably coupled to receive the heat transfer medium from a second end of the tube. The heat transfer device may heat or cool the heat transfer medium.

Abstract: A heat exchanger for a motor vehicle, particularly a motorcycle in which a bent cooling element is disposed between a first and second collector tank. The bent cooling element is provided with a longer and a shorter side as well as lateral connecting planes for joining the cooling element to the collector tanks. The collector tanks are made of a material that has substantially lower strength than the material of the cooling element.

Abstract: An aluminum flat tube for a heat exchanger is fabricated from an aluminum strip-shaped material which is structured by a core material coated with a sacrificial anode material on the inner face thereof and coated with a brazing filler metal on the outer face thereof by bending in the width direction to form a nearly B-shaped flat cross section. To improve the corrosion resistance of the inner face of the tube, the both edge parts of the strip-shaped material in the width direction thereof are bent inward into the tube so as the front end edge of the edge part to become apart from the flat inner face of the tube.

Abstract: A method for installing heat transfer panels and a heat transfer panel assembly having angled louvers for greater and more uniform dissipation of a convected heat transfer medium, such as air. The heat transfer panel assembly providing a broader and more uniform heat transfer means to affected surfaces, and the method of installation providing a simpler and quicker means for installation.

Abstract: The invention provides a temperature control device for a disk drive unit, the temperature control device includes a housing for connection to a carrier for a disk drive unit; an air flow generator arranged in the housing for providing a flow of air to a disk drive unit in a connected carrier; and, an air flow control device arranged at the side of the air flow generator and selectively configurable to control the air flow path whereby the temperature of air flowing to the disk drive unit can be controlled.

Abstract: A method and apparatus for use in a wellbore includes running a tool string to an interval of the wellbore, and activating a first component in the tool string to create a transient underbalance pressure condition in the wellbore interval. Additionally, a second component in the tool string is activated to create a transient overbalance pressure condition in the wellbore interval, or vice versa.

Abstract: Disclosed herein is a device that relates to a downhole tool. The tool comprising, a tool body having first and second support portions, and at least one extendable assembly pivotally mounted between the first and second support portions. The extendable assembly is reconfigurable between a retracted configuration and an extended configuration by relative movement of the support portions.

Abstract: Disclosed herein is a device that relates to an actuator comprising a plurality of individual piston chambers pressurized by a common pressure source. A plurality of pistons are in operable communication with the piston chambers, the pistons each being in operable communication with an actuatable device, such that the plurality of pistons simultaneously act upon the actuatable device upon application of pressure to the plurality of piston chambers.

Abstract: Disclosed is a tubing connection release system. The system comprising, a male connector having a profile at one end thereof and receptive to a tubular at one end thereof, a female connector receptive to a tubular at one end thereof and receptive to the male connector at another end thereof. The system further comprising, a sleeve disposed radially inwardly of the female connector, and a collet having at least one deflectable collet finger disposed radially inwardly of the sleeve. The collet being biased to a position within the female connector whereat the at least one collet finger is supported against radially outward deflection. The collet further being urgable by the push-in connector against the bias to a position where the at least one collet finger is radially outwardly unsupported such that the profiled end of the male connector is movable into engagement with the at least one collet finger.

Abstract: Disclosed herein is a method comprising disposing in a formation fracture, a proppant and/or a fracturing fluid that comprises a radiation susceptible material that comprises indium and/or vanadium; irradiating the radiation susceptible material with neutrons; measuring gamma-radiation emitted from the radiation susceptible material in a single pass; wherein the single pass does not involve measuring of background radiation from previous or subsequent logging passes; and determining formation fracture height from the measured gamma-radiation.

Abstract: An apparatus for use in a well comprises a structure having at least a first portion formed of a first material, and a detector to detect a signal associated with a component located either within or beyond the structure. The first material has a property that reduces attenuation of the signal.

Abstract: A technique to install a tool in a well includes running the tool into the well and fixing the tool to the well with a fixing agent without pumping the fixing agent through a central passageway of the tool. The tool may be a perforating gun that includes a casing body that includes a longitudinal axis. The perforating gun may also include a fin and a perforating charge. The fin radially extends from the casing body, and the perforating charge is attached to the fin and is oriented to generate a perforation jet in a radial direction away from the longitudinal axis of the casing body.

Abstract: Methods and compositions for reducing the viscosity of subterranean treatment fluids that comprise a gelling agent utilizing breakers that comprise hydroquinone and/or a derivative thereof. In one embodiment, the present invention provides a method comprising: providing a treatment fluid that comprises an aqueous base fluid and a gelling agent; providing a breaker that comprises a hydroquinone component; allowing the breaker to interact with the treatment fluid; and allowing the breaker to at least partially reduce the viscosity of the treatment fluid.

Abstract: Disclosed herein is a device that relates to a non-return valve. The valve comprising, a valve seat, a valve piston in operable communication with the valve seat. The valve further comprising, a first seal disposed at the piston to interact with the valve seat, and a second seal positioned at the piston to interact with the valve seat temporally after the first seal.

Abstract: The invention provides a fluid for use in a subterranean formation penetrated by a wellbore, the fluid comprising: (a) water; (b) an orthoester; and (c) a surfactant comprising a tertiary alkyl amine ethoxylate generally represented by the following formula: wherein R is an alkyl group or aryl group, and wherein X and Y are each independently at least one. The invention also provides a method of fracturing a subterranean formation, comprising the step of forming a foamed fracturing fluid comprising water; an orthoester; a surfactant comprising a tertiary alkyl amine ethoxylate generally represented by the formula above; and a gas. The method also provides the step of introducing the foamed fracturing fluid into a subterranean formation at a pressure sufficient to create a fracture in the subterranean formation.

Abstract: A plug retrieval and installation tool is used with a subsea well having a production tree, a tubing hanger, a passage that extends vertically through the tubing hanger and the tree, and a plug located within a plug profile in the passage within the tubing hanger. The plug retrieval device has a housing and connector that is lowered on a lift line onto the upper end of the tree. An axially extendible stem in the housing is moved with hydraulic fluid controlled by an ROV into the production passage of the tubing hanger. An installation and retrieval member mounted to the stem engages the plug and pulls it upwardly in the passage while the stem is being moved upward, and pushes the plug downward to install the plug while the stem is being moved downward. The connector, drive mechanism and retrieval member are powered by an ROV.

Abstract: A subsurface annular safety barrier for controlling fluid flow in the tubing-casing annulus in an annular flow well. The barrier may be positioned proximate the top of a formation to block fluid flow through the annulus upon loss of casing integrity. An embodiment of the annular safety barrier includes a packer and a valve, wherein the valve is operated to a closed position without mechanical manipulation of the tubing.

Abstract: A connector assembly for interconnecting wellbore tools to form a tool string include a first adapter having a tool end connectable to a first wellbore tool and an alignment end, a mandrel that has a pin end and an opposing end, the pin end being matable with the alignment end of the first adapter, a second adapter having an adapter end connectable to a second wellbore tool and a second end connected to the opposing end the mandrel and a sleeve that has a first open end and a second open end, the sleeve is moveably disposed over and in connection with the mandrel and the second open end is connectable with the alignment end of the first adapter for interconnecting the first adapter and the second adapter. The connector assembly facilitates hands-free make-up and break-out of tool strings.

Abstract: A method and apparatus for a seal assembly for a unitized wellhead system for land or platform applications utilizes a friction grip technology to create maintainable metal-to-metal seals with finely-controlled contact stresses, lock-down casing and tubing hangers, support test loads to minimize the size of landing shoulders required, and to rotationally lock casing hangers to provide simplified running procedures. The system can be used in combination with a friction grip clamping assembly to greatly streamline the wellhead design.

Abstract: An apparatus and method for radially expanding a wellbore casing using an expansion mandrel and a rotary expansion tool.

Abstract: A liner system has a setting collar at one end and is adapted for insertion into a well bore. The setting collar is adapted to couple with a liner running tool. A whipstock surface is provided on the setting collar and adapted to deflect a drilling string in drilling a lateral well bore off of the first well bore. A method of forming a well system includes forming a first well bore; installing a first liner in the first well bore, the first liner having a first whipstock surface adapted to deflect a drilling string; and then forming a second well bore extending from the first well bore by deflecting a drilling string through contact with the first whipstock surface.

Abstract: A pulse width modulated downhole flow control. A downhole flow control system includes a flow control device with a flow restrictor which variably restricts flow through the flow control device. An actuator varies a vibratory motion of the restrictor to thereby variably control an average flow rate of fluid through the flow control device. A method of controlling flow in a well includes the steps of: installing a flow control device in the well, the flow control device including a flow restrictor which variably restricts flow through the flow control device; and displacing the restrictor to thereby pulse a flow rate of fluid through the flow control device.

Abstract: A method of shutting in a well bore includes positioning a plug having a tubular portion in the well bore. At least a portion of the tubular portion is radially plastically deformed into substantially sealing engagement with the wall of the well bore to substantially block flow through the well bore.

Abstract: A system for discharging inert gas for extinguishing or suppressing a fire is disclosed. A fluid discharge control arrangement is positioned in a fluid flow path between a pressurised gas supply 10A,10B,10C and the target fire suppression zone 20. The fluid discharge control arrangement reduces the pressure in the fluid flow path downstream thereof. This may allow the downstream pipework to be selected to withstand a lower pressure than in a conventional system in which the fluid discharge control device was not provided, thereby reducing costs. The fluid discharge control device may comprise a first valve 30 and first restrictor 26 in the first flow path 22 and a second valve 32 and a second restrictor 28 provided in the second flow path 24. Fluid from the containers 10A,10B,10C flows initially through flow path 24 and restrictor 26. Subsequently flow path 22 may be closed by optional valve 30, and flow path 24 is opened by valve 32. Fluid flow then passes through restrictor 28.

Abstract: A nozzle for extinguishing devices and the like, made of a material with a high heat conductivity coefficient and comprising at least one through opening, at least one portion of which is blocked hermetically by at least one pad made of thermoplastic material, the pad being automatically removable, due to the pressure of the extinguishing agent, at a preset temperature, so as to allow the automatic dispensing of the extinguishing agent.

Abstract: A novel aerial boom system for use atop a vehicle and having linear movement sensors associated with hydraulic cylinders for moving lower and upper booms such that a microprocessor associated with the system can determine the instantaneous position of each boom and coordinate movement of the booms with respect to each other and with the vehicle to prevent undesired contact and to gradually decelerate boom movement as the boom approaches its limits to avoid shock from sudden stop of boom movement. When the novel system is used with a fire fighting vehicle, two variably spaced, independently controllable, fluid discharge nozzles can be used to fight one or two separate and distinct fires simultaneously. A piercing nozzle can be associated with the outer end of the upper boom that is independently controllable in both the vertical plane and in the horizontal direction to enable piercing of a wall independent of boom movement to assist penetration.

Abstract: A convenient, lightweight aerosol fire extinguisher system. The aerosol fire extinguisher system includes a fire extinguisher and a bracket. The extinguisher contains a pressurized fire extinguishing agent, and includes a depressable nozzle positioned at a top of the extinguisher for releasing the agent. The bracket supports the extinguisher in a stowed position, and includes a base for being releasably attached to a supporting structure, and a holder for securing the extinguisher to the bracket and allowing for easy removal in the event of a fire by pulling the extinguisher out of the bracket. The bracket further includes an attachment for releasably securing the bracket to the supporting structure.

Abstract: A horizontal sidewall fire protection sprinkler is provided, including a deflector having a vertical face, transverse to the fluid flow from the output orifice, and a horizontal shelf positioned above and perpendicular to the vertical face. A portion of the horizontal shelf extends in the fluid flow direction by a first length, with respect to the vertical face, and this first length is less than about half of a total length of the horizontal shelf in the fluid flow direction. The sprinkler is installed in a support cup having a raised mounting platform configured to receive the sprinkler body and a cylindrical outer surface, with a front edge in a fluid flow direction, and a back edge. The mounting platform of the support cup is closer to the front edge of the support cup in an axial direction thereof than to the back edge.

Abstract: A numerically-controlled robotic manipulator arm mounted to a sod harvester comprises two segments pivotally coupled together. One segment is rotatably coupled to a fixed base on the harvester while the second segment carries a pick-up head which can turn with respect to the segment. The pick-up head is capable of picking up, holding, and releasing sod rolls. The arm is programmable so that a variety of configurations of stacked sod rolls can be achieved.

Abstract: A numerically-controlled robotic manipulator arm mounted to a sod harvester comprises two segments pivotally coupled together. One segment is rotatably coupled to a fixed base on the harvester while the second segment carries a pick-up head which can turn with respect to the segment. The pick-up head is capable of picking up, holding, and releasing sod rolls. The arm is programmable so that a variety of configurations of stacked sod rolls can be achieved.

Abstract: An electrically powered hand tool is disclosed. The tool includes a motor, a power source, a work element and a controller. Various alternative features, embodiments and operative configurations are disclosed. The electrically powered hand tool may be a drill/driver configured to interrupt the rotation of the work element responsive to detection of a torque that exceeds a predetermined torque threshold.

Abstract: An improved impact power tool for carving and engraving an article comprises an air delivery system operable to communicate with a pressurized air source; a drive assembly operable to receive air from the pressurized air source via the air delivery system; a hand held device in driven communication with the drive assembly; and a housing for storage of the air delivery system and drive assembly. The tool includes an improved valve design, a throttle bias valve, and an air storage tank housed within the housing, and an improved housing construction. The improved valve design and air storage tank enable greater stroke speeds of a work tool over a wider power range while also improving the crispness and speed of the impact reaction time over the entire range. The throttle bias valve is in communication with an additional exhaust path, such that th bias valve allows improved control of the hand held device and improved operation over a wider range of air pressures.

Abstract: The invention relates to a hand-held working tool, comprising a first unit, powered by a vibration on operation and a second unit which may be displaced relative to the first unit. A vibration isolation device is arranged between the first and second unit, comprising an actuator, for generation of a control force, by means of which the operational force acting in the working direction (A) between the first and the second unit may be at least partly compensated. The actuator is pneumatically operated and comprises an air spring for vibration isolation. A working piston in an air spring percussion device on the working tool serves to supply compressed air for the air spring. Alternatively, the compressed air can be supplied by the oscillating relative movement between the first unit and the second unit.