Abstract: This invention provides a method of producing a highly electrically conductive sheet molding compound (SMC) composition and a fuel cell flow field plate or bipolar plate made from such a composition. The plate exhibits a conductivity typically greater than 100 S/cm and more typically greater than 200 S/cm. In one preferred embodiment, the method comprises: (a) providing a continuous sheet of a substrate material (bottom sheet) and a continuous sheet of flexible graphite (top sheet) from respective rollers; (b) feeding a resin mixture (comprising a thermoset resin and a conductive filler) to a space between the top sheet and the bottom sheet in such a way that the resin mixture forms a uniform core layer sandwiched between the two sheets to obtain a laminated structure; (c) compressing the laminated structure to obtain a SMC composition having two opposite outer surfaces; and (e) impressing a fluid flow channel to either or both of the outer surfaces (e.g.

Abstract: The present invention presents an improved bellows shield for a plasma processing system, wherein the design and fabrication of the bellows shield coupled to a substrate holder electrode advantageously provides protection of a bellows with substantially minimal erosion of the bellows shield.

Abstract: An attaching device which makes it possible to accurately perform alignment when the diameters of a substrate and a supporting plate are substantially the same includes a mounting plate for mounting a semiconductor wafer thereon, a pressing plate for pressing a supporting plate onto the semiconductor wafer, and a pair of alignment members. The pair of alignment members are arranged to freely move back and forth in a horizontal direction, and blades for supporting a lower surface of the periphery of the supporting plate and pushing members for performing positioning in a state where the supporting plate is superposed on the semiconductor wafer are provided at tip ends of the alignment members.

Abstract: A tire building core assembly includes a shell assembly is formed by a plurality of shell segments and includes a central spindle-receiving throughbore. Two spindle units meet in axial alignment within the shell assembly throughbore and retain the shell segments in an expanded configuration forming a toroidal tire building surface. An open socket may be formed in a protruding end of one or both spindle units, the socket configured to couple with an end of an external arm mechanism. A latching mechanism moves between engaged and disengaged positions for releasably couple the one spindle unit to the second spindle unit within the shell assembly throughbore.

Abstract: A tire building core and method of assembly is provided to include in an assembled configuration a shell assembly having a plurality of shell segments forming a tire-building toroidal surface and a central spindle receiving throughbore. A spindle assembly extends into the shell assembly throughbore to retain the shell segments in an assembled configuration. One or more shell segments include an electrical heating element and an electrical connection is established with the heating element by a suitably positioned electrical connector(s) carried by a spindle unit. Electrical connection is established and broken by axial movement of the spindle unit in and out of the throughbore.

Abstract: A heat sealer including: a base bar equipped with a heater on a receiving section; and a pressure bonding lever facing the receiving section and capable of pressing and holding a sealing portion of a resin made sealing preform to accommodate contents therein from both sides, and the sealing portion of the resin made sealing preform placed on the receiving section and pressed by the pressure bonding lever to the receiving section side to hold the sealing portion between the receiving section and the pressure bonding lever, and current-heated and weld-sealed, wherein the base bar includes: a recording medium supplier supplying a recording medium from which specific information can be read to a predetermined position; and a recording medium transport machine transporting the recording media having been supplied to the predetermined position one at a time to the sealing portion, whereby the recording medium is sealable integrally with the sealing preform in a single piece.

Abstract: The large volume reactor 10 or a thin film evaporator 10? comprises a housing 12 enclosing a reactor chamber 14. A reactor rotor driven about an axis of rotation is located in the reactor chamber 14. The housing 12 comprises a reactor chamber inlet opening 22 and a product outlet 24. A premixing unit 30 is located adjacent the reactor chamber inlet opening 22, which is configured to mix a starting material fed through one or more product inlet openings 66, 68, 68? to form a prepared substance which is fed directly to the reactor chamber 14.

Abstract: A roller blind cover for an aperture in a vehicle interior. The roller blind cover has a carrier layer, a decorative layer, and a coating that covers the visible surface of the decorative layer. The overlay coating may be elastic with a layer thickness of at least 0.3 mm. The overlay coating may be permanently bonded to the visible surface of the decorative layer.

Abstract: A beaded-chain control device for window blinds comprises a positioning seat with an assembling cavity defining one side therein for the accommodation of a cord-winding unit equipped with a two-way rotary cylinder thereon wherein the two-way rotary cylinder is driven by a beaded-chain to rotate in clockwise or counterclockwise direction thereby, and the assembling cavity thereof has a passage cut at both lateral sides thereon respectively. The cord-winding unit also has a smaller-diameter winding-shaft protruding at the other end of the two-way rotary cylinder to precisely align with the passages thereof so that an actuating cord can pass through the passage to attach onto the winding-shaft and synchronically actuate each pull cord linked thereto to collect or expand a blind body thereby, permitting smoother operation and reducing the assembly parts to cut the cost of production and achieve economical efficiency thereby.

Abstract: A window blind structure comprises a beaded-chain control unit with a positioning seat and a cord-winding device accommodated to one end of a head rail, and left/right drive-control pulley assemblies mounted to both ends of the head rail for the winding of pull cords synchronically attached to an actuating cord at one end and guided through a blind body to fix onto a bottom rail at the other end respectively. The positioning seat has an assembly cavity with through holes defining thereon precisely matched to a roller shaft of a two-way rotary cylinder of the cord-winding device, permitting the actuating cord to pass through the through holes and attach onto the roller shaft. Therefore, the actuating cord, drawn to coil up or release depending on the revolving direction of the roller shaft, can move the pull cords and the bottom rail therewith to collect or expand the blind body thereby.

Abstract: A unique window blind system has two triangular panels. Each panel has a plurality of foldable sections bundled together at one fixed end and the remainder portion are unfoldable to cover a diagonally opposite triangular half portion of the window opening. The panels are mounted in the window frame in an inverted manner relative to one another with the fixed end adjacent to diagonally opposite corners of the window frame. Pull cords are provided for folding the sections in a fanfold manner to obtain selectively an opening covering partially or completely the window opening. Additional pull cords are provided for unfolding the sections of the two panels to cover selectively the window opening partially or completely from the opened state.

Abstract: An insulated glass window assembly including a cordless integral shade with level correction, a sliding follower, and an air permeable spacer assembly. Cords are eliminated by confining the window covering movement to one dimension. Level correction is achieved by pivotally connecting the shade bar to the supporting operator or shade support, so that the bar can be re-leveled by raising or lowering the bar against the IG spacer. The follower slides in a track on one side of the IG. The spacer includes an air passageway between the desiccant chamber and the space between IG space, and the hole is covered by an air-permeable patch to prevent unwanted leakage of desiccant into the viewable area.

Abstract: A non-pull cord operated window blind structure comprises a head rail with a blind body attached to the underside and actuated by a collecting cord wherein a cord-winding control device actuated by an operating cord, and a fixed seat are respectively mounted at both ends of the head rail with a movable seat situated there-between. One end of the operating cord is attached to the movable seat, and both ends of the collecting cord are synchronically wound through the fixed seat and the movable seat and located at the fixed seat, permitting the operating cord and the collecting cord to associate with each other in linking operation. Therefore, a bottom rail is simply pushed or pulled by hands to loosen or tighten the collecting cord and actuate the operating cord therewith, permitting a state of counterbalance formed there-between for easy adjustment of the blind body into a desirable position thereby.

Abstract: A vehicle shade system with a shade (13) which is extended against the reset force (16a) of a take-up roller (13a) and at least one pull (31), the pull containing a handle (18) for actuating the shade and laterally at least one slider (10) each which is movably supported in a guide rail (22) which runs parallel to the closing direction (12) of the shade and has at least one braking surface (15). The slider (10) is made such that when the handle (18) is released, by the reset force of the take-up roller (13a) the braking surface (15) is shifted toward the guide rail (22), by which it brakes with at least one opposing surface of the guide rail.

Abstract: The present invention relates to a process for preparing a high-yield pulp comprising a) treating a lignocellulose containing material chemically by means of an oxidising system comprising at least one non-enzymatic oxidant substantially free from ozone and chlorine dioxide and an activator at a pH from about 2 to about 6.5; and b) treating the lignocellulose containing material mechanically for a time sufficient to produce a high-yield pulp, wherein the lignocellulose containing material is chemically treated prior to and/or during any mechanical treatment stage, and wherein the lignocellulose containing material is not chemically treated at a pH from about 11.5 to about 14 between stages a) and b).

Abstract: Apparatus and methods for preparing foundry sand mixes, using a pre-mix tank to pre-mix water and particulate bond material to make a water/bond slurry, then delivering the slurry into the foundry sand recovery stream. The slurry is mixed with return sand, and then discharged for use in making foundry molds. Delivery of the slurry to the sand stream can take the place of all particulate addition of bond to the sand stream. The slurry optionally is worked through a recycle stream, an accumulator tank, or both. A invention contemplates mixing, recycling, holding, and delivering the slurry to the sand system. The slurry can be delivered to multiple sand system entry loci at the mixer/mullor and/or the sand cooler. Slurry can be made up in batches or on a continuous basis. Slurry delivery can be batch, or continuous, with optional variability in rate of slurry delivery.

Abstract: Helium gas at ambient pressure is inserted into an expendable mold at a fill tube or other port exiting the bottom of the mold. The helium displaces atmospheric air in the mold cavity, and the displaced air exits the cavity through the fill tube. When the air in the mold cavity and fill tube has been completely displaced by the helium, the fill tube is submerged in molten aluminum, and the aluminum is drawn into the mold cavity through the fill tube to form a casting having significantly reduced oxide inclusions and significantly improved fatigue strength.

Abstract: A method for manufacturing a railcar coupler knuckle includes providing a cope mold portion and a drag mold portion. The cope and drag mold portions have internal walls defining at least in part perimeter boundaries of a coupler knuckle mold cavity. The method includes positioning one or two internal cores within either the cope mold portion or the drag mold portion. The one or two internal cores are configured to define a kidney cavity, a finger cavity and a pivot pin cavity of a coupler knuckle. The method includes closing the cope and drag mold portions with the one or two internal cores therebetween and at least partially filling the mold cavity with a molten alloy, the molten alloy solidifying after filling to form the coupler knuckle.

Abstract: A permanent chill mold for the continuous casting of metal, having a mold cavity (2) which has a pouring slot (3), an exit opening (4) and a casting cone (6). At least one concave bulging (7) is provided that extends in the casting direction (G), which begins at a distance (A) below a predetermined casting bath level position (5) and extends up to the exit opening (4).

Abstract: A permanent chill mold for the continuous casting of metals. At least one partial region of the outer surface of the permanent chill mold (1) is provided with cooling channels (2, 2a, 2b, 2c). The depth and/or the width of the cooling channels (2, 2a, 2b, 2c) are greatest in the middle of a sidewall of the permanent chill mold (1), and they decrease in the direction of the corner region (4) of the sidewall. Because of this, a uniform heat dissipation can be implemented, and thereby higher casting speeds are possible.

Abstract: A first inclined surface and a second inclined surface are provided on the inside of a mold to constitute a so-called two-step tapered mold. A mold powder is adjusted to have a total content of CaO component and SiO2 component of not less than 50 wt %, and a content of F component of not more than 11 wt %. The inclination rates of the first and second inclined surfaces are set according to the basicity or solidification temperature of the powder to be used. The pore area of molten steel discharge ports of a dipping nozzle is set to not less than 2500 mm2 to less than 6400 m2. The discharge angle of the molten steel discharge ports is set, based on the horizontal, obliquely downward to not less than 10° to not more than 35°. According to such a continuous casting method, solidification delay at angle parts of a bloom can be suppressed.

Abstract: A device for climate control of a vehicle is provided which includes a coolant circuit in which coolant flows through a compressor, a condenser, and an evaporator; a heat transfer medium circuit in which heat transfer medium flows through a heat source and a heat exchanger; and a heat/cold reservoir in which the evaporator and the heat exchanger are located. The device provides an improved and comparatively economical approach to climate control in the area of a driver's bed in a motor vehicle interior by, at least in part, using multiple heating/cooling surfaces for a driver's bed and/or vehicle interior wall, which is integrated into the heat transfer medium circuit in a parallel relationship to each other such that the heat transfer medium can flow selectively through the heating/cooling surfaces, or the heat transfer medium which is conveyed by the heat source can flow through the heating/cooling surfaces.

Abstract: A vacuum housing includes a cylindrical section, a flange, and a ring arranged concentrically with the cylindrical section and forming part of the flange, with the ring being formed of a harder material than the remaining of the housing, and having an annular knife edge extending in an axial direction and in a direction away from the cylindrical section, with the knife edge forming part of the flange surface.

Abstract: A heat exchanger has a core including a plurality of tubes and a container disposed at an end of the core. The container has a tubular part and a cap part closing an end of the tubular part and defining a hole. The heat exchanger further has a pin for positioning. The pin extends through the hole of the cap part and to an outside of the container. The pin is bonded to the cap part with a brazing material. Further, the heat exchanger has a preliminary fixing portion by which the pin and the cap part are preliminarily fixed to each other before being bonded with the brazing material.

Abstract: A cooling element for heat dissipation in one or more electronic components includes a metal element with one or more slit-shaped receiving openings for one or more electronic components that are to be cooled. In its lengthwise extension, each receiving opening has a receiving bore that holds a helical spring and that runs parallel to the lengthwise extension. The receiving bore is arranged in such a way that it is open on the lengthwise side towards the receiving opening and the spring placed in it projects with a radial partial section into the receiving opening that holds the electronic component. As a result, in partial areas, the spring presses the electronic component against the inner wall of the receiving opening that lies opposite from the spring, thus establishing thermal contact.

Abstract: In a cooling system for cooling power electronics on a locomotive where the cooling system includes a finned heat sink that has air passing therethrough an airway passage to reach a plurality of fins where reducing airborne debris clogging of the plurality of fins is preferred, the heat sink includes at least one of a by-pass area having no fins located at an area where debris is expected to pass through the plurality of fins, a turning guide directing air between the plurality of fins at a specific location, a blockage reduction fin structure on at least one fin of the plurality of fins, and fins proximate within the inlet airway passage.

Abstract: A method and incorporated heat sink that is cooled both thorough air flow and liquid circulation is provided. The heat sink is disposed close to electronic components and used for their cooling. It comprises a finned structure positioned such that air can easily pass though it; a heat source plate disposed thermally in direction of heat flow to one side of the finned structure such that the heat source plate is in thermal communication with the finned structure fin base and fin tips, and a second plate also disposed at an opposing end of the finned structure in thermal communication both with finned structure fin base and fin tips. The heat sink also includes fluid re-circulator disposed at least partially in the plates for circulating fluids though the plates and around said finned structure such that both fin tips and fin base is cooled.

Abstract: A cleaning apparatus, system and method for parts of the heating/cooling system of an vehicle. The apparatus effectively impedes odour and pollution originating from micro-organisms growing on the cooling and heating units. The cleaning assembly 220 includes of distribution tubes 225 provided with nozzles 230 arranged to spray cleaning substance onto the surfaces of the cooling and/or heating units 200, 232. The distribution tube preferably extends through at least a portion of the plurality of heating/cooling flanges 215 of the heating/cooling units and the nozzles are provided in the spaces formed between two adjacent flanges.

Abstract: A heating heat exchanger includes plural tubes which are arranged in parallel and through which a thermal fluid for heating air flows, and plural fins which are joined to the tubes. The tubes and the fins are arranged to form plural heating parts equal to or more than three in which air is heated, and at least two bypass passages each of which is provided between adjacent heating parts, through which the air passes without exchanging heat with the thermal fluid. Furthermore, first and second tank parts for distributing the thermal fluid to and for collecting the thermal fluid from the tubes are arranged at two longitudinal ends of the tubes and extend to across an area where the bypass passages and the heating parts are provided. In addition, the bypass passages and the heating parts are arranged in an arrangement direction perpendicular to an air flow direction.

Abstract: One embodiment of a system for cooling a heat-generating device includes a base adapted to be coupled to the heat-generating device, a housing coupled to the base, a liquid channel formed between the base and the housing, where a heat transfer liquid may be circulated through the liquid channel to remove heat generated by the heat-generated device, and a heat pipe disposed within the liquid channel, where the heat pipe increases the heat transfer surface area to which the heat transfer liquid is exposed. Among other things, the heat pipe advantageously increases the heat transfer surface area to which the heat transfer liquid is exposed and efficiently spreads the heat generated by the heat-generating device over that heat transfer surface area. The result is enhanced heat transfer through the liquid channel relative to prior art cooling systems.

Abstract: A computer assembly including a casing having a bottom and end walls and side walls and a lid and a variety of computer components are supported on the bottom. A partition extends between the side walls and a plurality of fans is disposed in the partition for moving air through perforations in the end walls. A heat exchanger includes fins and each fan has a central hub and fan blades extending radially therefrom. In the embodiment of FIGS. 1 and 2, the fans move air into said fins and a flow straightener is disposed between the hub of each fan and the fins for straightening flow downstream of the hub prior to entering said fins. In the embodiment of FIGS. 3 and 4, the fans move air through the fins and into a flow deflector over each hub of the fan for diverting flow from the fins and around the hubs prior to entering the fans.

Abstract: A method and incorporated hybrid air and liquid cooled heat sink that is provided for cooling electronic components. The heat sink comprises a finned structure having fins positioned for air to pass easily through them. The finned structure is flanked by a heat source plate on one side (closer to direction of heat flowing from electronic components) and a second plate on its opposing side such that both of the plates are in thermal communication with fin tips and fin base of the finned structure. The heat source plate itself is composed of two complementary halves with fins on each half. When brought together, the two halves form a unitary, fluid sealed plate while allowing passage of fluids through it by allowing the fins on each half to create and interleaving structure. A fluid re-circulator is also disposed at least partially in the plates for circulating fluids though the plates and the finned structure such that both fin tips and fin base are cooled.

Abstract: The invention relates to an arrangement which is used to secure a fan frame (2) to a heat exchanger (3). Said heat exchanger (3) comprises a collecting tank provided with retaining means and the fan frame (2) comprises a frame provided with a support device and/or an additional rib and securing means which interact with the retaining means of the collecting tanks (8, 9).

Abstract: An inflow nozzle is disposed perpendicularly to plate-shaped fins of a heat-receiving section which is caused to face a heat-generating body to be cooled to draw heat therefrom, and portions of the plate-shaped fins are formed in a substantially V-shape or a substantially U-shape. Moreover, by selecting a proper dimension ratio of the thickness of a heat-receiving plate facing the heat-generating body and the length of the heat generating body, the heat absorption performance of the cooling device can be improved, and the cooling of the electronic component which generates high-temperature heat can be performed efficiently.

Abstract: The invention relates to a device for multi-stage heat exchange and to a method for producing one such device, whereby at least three free-flowing media (fluids) are used in three flow devices subdivided into at least two heat-exchanging or flow modules. Said modules respectively consist of at least two flow elements that are arranged in such a way that different fluids alternately flow through the same. For essentially liquid fluids, the fluids are distributed to the flow elements by means of fluid collecting devices or fluid distributing devices connected in a gas-tight and liquid-tight manner. The main flow directions of all fluids in the flow elements are in essentially parallel planes. At least two flow modules are directly mounted in series and/or by means of fluid distributing devices in a flow-connected manner at least in relation to one flow device.

Abstract: Heat exchanger having a plurality of heat transfer tubes arranged substantially in the shape of a helicoidal tube with the individual coils running parallel to one another, and a plurality of fins secured to the external surfaces of the heat transfer tubes and arranged perpendicular to the tube to extend outwardly therefrom. The first working fluid flows inside the heat transfer tubes, and air flows through a passage defined between the adjacent fins and at right angles to the axis of each heat transfer tube. The blower is placed co-axial with the helicoid's axis to further enhance the heat exchange.

Abstract: A housingless-type oil cooler includes cooling elements having first and second plates coupled with together, an oil return tube vertically arranged through a core portion, and a heat-transfer suppressing means. The cooling elements are piled up in a vertical direction of the core portion to alternately form cooling water chambers and oil chambers so that the adjacent cooling water chambers are fluidically connected through a cooling water passage and the adjacent oil chambers are fluidically connected through an oil passage. The oil return tube discharges oil introduced from one side of the core portion toward its other side through the oil chambers and the oil passages. The heat-transfer suppressing means is arranged between the oil chambers and the oil return tube to suppress heat transfer between the oil flowing in the oil chambers and the oil flowing in the oil return tube.

Abstract: A tool activation system and method includes receiving an authorization code of a user to verify access rights of a user to activate the tool. In one example, the authorization code is receive from a smart card. The environment around the tool, which can be in a wellbore, for example, is checked. In response to the authorization code and the checking of the environment, activation of the tool is enabled.

Abstract: A test plug tool for use in testing a pressure integrity of a pressure control stack mounted to a wellhead, including a joint between a casing and a casing support in the wellhead. The test plug tool includes a test plug of an appropriate diameter used to pressure test the pressure control stack as well as a joint between any one of a surface casing and the wellhead, an intermediate casing and an intermediate casing mandrel, and a production casing and a production casing mandrel. The pressure integrity of the wellhead is ensured at each stage of well drilling and well completion, and safety is improved. Optionally, a backpressure valve permits pressurized fluid that leaks below the test plug tool to flow upwardly through a central bore in a landing tool that is secured to the test plug tool to permit detection of the leak.

Abstract: Preformed ribs are held closely to the swelling element and then are allowed to assume an expanded position to capture the ends of the swelling element. Many variations are possible one of which is retaining the ribs in a run in position with a band that releases by interaction with well fluid. In another embodiment the ribs are of a shape memory material and go to the enlarged state after a time and exposure to well fluids. The swelling action of the element could urge the ribs to the expanded position. Alternatively, a retractable sleeve can be actuated after a delay using a piston and a sealed compartment where a material must dissolve or otherwise go away before the piston can stroke to remove a retainer from ribs that can then move out.

Abstract: A method includes producing formation fluid from a subsurface in situ heat treatment process. The formation fluid is separated to produce a liquid stream and a gas stream. At least a portion of the liquid stream is provided to a hydrotreating unit. At least a portion of selected in situ heat treatment clogging compositions in the liquid stream are removed to produce a hydrotreated liquid stream by hydrotreating at least a portion of the liquid stream at conditions sufficient to remove the selected in situ heat treatment clogging compositions.

Abstract: A method of servicing a wellbore in contact with a subterranean formation, comprising: placing a sealant composition comprising a cementitious material and a cationic latex into the wellbore.

Abstract: A method for gravel packing or frac packing in a borehole includes running a workstring to a target location, running an optic fiber to the location with the workstring and monitoring the target location with the optic fiber. A method for monitoring at least one parameter at a plurality of discrete locations at a gravel packing or frac packing location in a borehole including running a workstring to the gravel packing or frac packing location running an optic fiber to the gravel packing or frac packing location along with the workstring and monitoring the gravel packing or frac packing location at a plurality of discrete points along the gravel packing or frac packing location.

Abstract: A method of improving injectivity of fluid, particularly produced water, in enhanced hydrocarbon recovery is disclosed. The method includes introducing a fracturing fluid into the subterranean formation to create a fracture, and introducing proppant into the fracturing fluid to form a single layer of proppant in the fracture. The fracturing fluid can be formed from produced water. Alternatively, the produced water is introduced after a fracturing fluid, other than the produced water, has been introduced to create a fracture. By reducing the amount of proppant and by using much larger proppant, a larger flow path through the fracture is created, thereby increasing the injectivity of produced water.

Abstract: A process and equipment for treating natural gas produced by a well that has recently been stimulated, and that contains an undesirably high concentration of the fracturing gas used to stimulate the well. The process involves treating the gas by membrane separation, and provides for control of treatment parameters to compensate for the changing concentration of fracturing gas in the produced gas, as well as changes in gas flow rate.

Abstract: Subterranean treatment operations, and more particularly, methods of treating subterranean formations using treatment fluid compositions including chlorinated carbohydrates, are provided. An example of a method is a method of treating a subterranean formation, including: providing a treatment fluid including water, a hydraulic cement, and a chlorinated carbohydrate; placing the treatment fluid in a subterranean formation; and permitting the treatment fluid to treat the formation. An example of a method is a method that includes providing a cement composition that includes water, a hydraulic cement, and an additive that includes a chlorinated carbohydrate and a tartaric acid; placing the cement composition in a subterranean formation; and permitting the cement composition to set therein.

Abstract: Subterranean treatment operations, and more particularly, methods of cementing subterranean formations using cement compositions including maltodextrin, are provided. An example of a method of the present invention is a method of cementing a subterranean formation, comprising: providing a cement composition comprising water, a hydraulic cement, and an additive comprising maltodextrin; placing the cement composition in a subterranean formation; and permitting the cement composition to set in the formation.

Abstract: An explosive device includes a housing, and at least one of an initiator and an explosive in the housing. The at least one of the initiator and explosive are activatable in response to stimulus from a control line. A monitor in the housing monitors a state of the stimulus to enable determination of a status of the explosive device.

Abstract: A threaded connection assembly comprises a nut, a multiplier connected to the nut via a first threaded interface having a first number of threads per inch and a well servicing pipe coupling connected to the multiplier via a second threaded interface having a second number of threads per inch. A method of forming a threaded connection for a well servicing application comprises forming a pipe coupling between two well servicing pipe sections and threading a connector to the pipe coupling to form a threaded connection without impact loading the connector. Another method for forming a threaded connection comprises disposing a first pipe section partially within a nut, threading a multiplier into the nut, threading the multiplier onto a second pipe section, and leveraging the multiplier against the nut, or vice versa.

Abstract: In accordance with the present invention, the rheology of an aqueous fluid is modified by a method which comprises adding to said aqueous fluid an amount of a viscoelastic composition sufficient to form a viscoelastic fluid. The viscoelastic composition of the invention comprises a combination of i) at least one alkyl amido quaternary amine, and ii) at least one coadditive that comprises a C8-24 linear alkyl and/or alpha-olefin sulfate and/or sulphonate.