Abstract: A pressure regulating apparatus is disclosed for use in an irrigation network. A pressure regulator may be combined with a filter unit in a single pipe to reduce components and joints in the irrigation network. A pipe may be provided having openings in its sides for receiving and securing a portion of the pressure regulator. The openings may be reference ports for a pressure sink, and the ports may include a porous filter material for preventing ingress of particulate matter while permitting gas to pass therethrough. The pressure regulator has a reciprocating valve member which may be sealed within a housing of the pressure regulator or with an inner surface of the pipe. The incoming water is first filtered and then it goes to the pressure regulator. The pressure regulator may be assembled as sequentially installed components.

Abstract: A tank transport system consisting of a wheeled cart having compartments for holding tanks includes a hose compartment that stores the hoses for the tanks and other associated equipment. The hose compartment includes a flip down door that, in its open position, is disposed substantially horizontally and contains a number of storage slots for holding equipment. A hose storage rack is provided interior of the hose storage compartment for storing the hoses in a wound state. A number of storage areas are also included within the compartment including a bin formed within the hose rack. A pivotable handle is provided that is used to roll the cart on the wheels. Other storage compartments may also be provided external to the hose compartment.

Abstract: A device for prevention of particulate contamination of a valve fitting and for notification of whether actual access or tampering or potential access or tampering of a fluid from a fluid tank connected to the valve and/or the valve has occurred, featuring a fitting block which is insertable within the fitting or capable of receiving the fitting, and first and second straps bendable about the valve and fastenable to each other. One of the straps may include a ring through which a valve burst disk is insertable when the strap is bent about the valve. If the device was compromised and the cylinder was removed for access to the valve fitting, the ring of one of the straps would remain on the burst disk even though the cylinder was removed from the fitting. Thus, the compromised device would remain on the valve indicating that access to the valve or fluid had been attempted or achieved.

Abstract: A control valve apparatus couples pressurized fluid to first and second actuators using first and second double valves. The first double valve includes first and second crossover passages and first and second pilots. The second double valve includes third and fourth crossover passages and third and fourth pilots. A first interconnection couples the first crossover passage with the third pilot fluid inlet. A second interconnection couples the second crossover passage with the fourth pilot fluid inlet. A third interconnection couples the third crossover passage with the first pilot fluid inlet. A fourth interconnection couples the fourth crossover passage with the second pilot fluid inlet. Thus, operation of each pilot depends upon receiving pressurized fluid from the other double valve which is only present when the other double valve is not in a fault condition.

Abstract: An overpressure rotary valve assembly for detecting and abating an overpressure condition. A valve member is configured for movement between a closed position and an open position. A locking pin contactingly retains the valve member in a selected one of the open and closed positions. A piston is coupled to the locking pin, and a collapsible member is coupled to the piston. When a fluidic pressure upon the piston reaches a predetermined threshold, the piston mechanically collapses the collapsible member and pulls the pin from the valve member, thereby freeing the valve member to move to the remaining one of the open and closed positions. The locking pin is preferably decoupled from the piston so that the pin remains in place during initial stages of piston movement. Differential pressure across the valve member does not alter the setpoint since only upstream inlet fluid is applied to the piston.

Abstract: To obtain a directional control valve superior in workability and maintenanceability by mounting a pilot valve, a printed circuit board and the like on a top surface of a main valve section efficiently so that easy disassembly and assembly are achieved. A valve adapter is mounted on a top surface of a housing of a main valve section with first screws, pilot valves are mounted on the valve adapter with second screws, a printed circuit board is disposed above the pilot valves, and is electrically connected thereto, a protective cover for covering the valve adapter, the pilot valves, and the printed circuit board is mounted airtightly to the top surface of the housing with third screws, a pilot supply flow channel is formed between the valve adapter and the housing, and relay holes for bringing the pilot valves into communication with pilot flow channel ports are provided on the valve adapter.

Abstract: The present invention relates to the field of units for hydraulic pilot control of directional-control valves used in the fabrication of mobile vehicles and particularly relates to a hydraulic pilot control with an oscillation damping system. Connections are provided among the chambers in the pilot control unit to provide a damping effect in the actuation stroke, thereby preventing any oscillation: the provision of such connections among the chambers has the function of preventing air stagnation; this arrangement prevents any undamped behavior due to incomplete filling upon installation or to air transported in the hydraulic fluid.

Abstract: A flow valve having sealing member having a first condition for engaging a housing to prevent back flow and a platform for obstructing a flow passage through the flow valve with the platform supporting the sealing member in an out-of-the-way condition to allow fluid to flow through the flow valve.

Abstract: The present invention relates to a construction machine having a working oil tank and a switching valve to open/close the pilot line of the hydraulic pressure control system, the return oil from the switching valve being put back to the tank at the bottom through a return pipe, wherein a drain pipe is provided at a portion of the return pipe lower than the tank, while a plug for opening/closing the drain pipe at the outlet thereof, the oil in the working oil tank being discharged through the return pipe in a case where the outlet is opened by the plug. This allows the simplification of the configuration of drain passage as well as the improvement of the efficiency of draining works.

Abstract: A loom, especially an air jet loom for producing a leno cloth with integrated patterning includes a weaving reed and first and second shed forming devices. The first shed forming device includes a pivotable reed as a first guide arrangement for guiding and shedding leno warp threads, and an upright reed as a second guide arrangement for guiding and shedding ground warp threads, to form leno bindings. The second shed forming device includes a third guide arrangement for guiding and shedding patterning warp threads, to form pattern bindings. The third guide arrangement is arranged between the first shed forming device and the weaving reed.

Abstract: Cutting device for a face-to-face weaving machine, comprising a cutting knife and an upper (2) and a lower cutting rail (3) with an intermediate distance (13) which may be adjusted by means of one or several screw means (3, 7), the device comprising at least one first screw means (3) having a first (4) and a second threaded part with a mutually opposite screw thread having practically the same pitch, each threaded part (4, 5) being designed in order to move a respective cutting rail as to height in the opposite direction, because of which the almost central position of the cutting knife with respect to the upper (2) and the lower (1) cutting rail is maintained, with the same deviation, when adapting the adjusted height of the jaw to a new height of the jaw.

Abstract: A tool for installing a metal locking tie is disclosed. The tool includes a tension mechanism and a ball set and cut-off mechanism. The tension mechanism tensions the metal locking tie wrapped around a bundle. The ball set and cut-off mechanism includes a guide block and a shear block that engages the guide block. Once the tool tensions the metal locking tie, the guide block and the shear block travel forward in the tool thereby setting a ball in a metal locking tie head and shearing a portion of the tensioned metal locking tie.

Abstract: A power tool, such as, for example a router. In some aspects, a power tool includes a motor, a motor housing defining an air outlet, and a shield connectable to the motor housing and positionable to at least partially cover the air outlet to inhibit movement of debris into the motor housing through the air outlet. In some aspects of the invention, a router includes a base, a motor housing supported by the base, at least one of the base and the motor housing defining a depth adjustment column having an open end, a motor supported by the motor housing and operable to drive a tool element, a depth adjustment mechanism supported in the depth adjustment column and operable to adjust the cutting depth of the tool element, and a flexible shield connectable to the base in a position to cover the open end and to allow access to the depth adjustment mechanism through the open end.

Abstract: A veneer composer is provided including a skew correcting station adapted to square at least one edge of a veneer piece to a reference side, a clipping station adapted to move in the same direction and at the same material being clipped, and a gap closing station adapted to close the gap between adjacent veneer pieces without causing excessive force between the adjacent edges.

Abstract: A comminuting machine rotor assembly comprising rotors carried by a shaft for conjoint rotation with the shaft, hammer heads carried by the rotors and extending radially outwardly from the shaft, and hammer inserts releasably attached to respective ones of the hammer heads. There is a wear material coating over at least a first cutting edge of an insert body of each insert. The first cutting edge of each insert body is defined by a front facet generally facing the direction of assembly rotation, a radially outer end facet adjacent the front facet, and an intervening radially distal corner of the hammer insert formed at the intersection of the front and end facets. The front and end facets are disposed at a relative angle of greater than 60 degrees to one another.

Abstract: A worktable includes two first rails arranged in parallel on a base, two guide rods movable along the first rails in a first direction and a second direction reversed to the first direction, two second rails respectively slidably coupled to the guide rods, a sliding plate fixedly mounted on the second rails, and a positioning device for locking the sliding plate to stop the sliding plate from movement relative to the base.

Abstract: A safety support includes a substantially cylindrical base configured to conform to the rim. The support further includes a crown with a radially outer wall configured to enter into contact with an internal wall of a crown of the tire in the event of a loss of pressure and to leave clearance therebetween at the rated operating pressure of the tire. The safety support further includes an annular body linking the base and the crown of the support. An envelope of the radially outer wall of the support crown is defined, when the support is mounted on the rim, with f being the deflection undergone by the support mounted on the rim under a load Z, the rated load of the tire, the envelope being confined between two cylinders of revolution of radius Rmax and Rmin satisfying the following relationship: 0.2f<Rmax?Rmin<2f.

Abstract: A pneumatic tire for ice-bound or snow-covered roads, which has fine grooves formed in a tread surface, thereby improving brake and drive performance on ice-bound roads in early periods of wear. This pneumatic tire for ice-bound or snow-covered roads has its tread partitioned into a plurality of lands, these lands being formed with sipes, wherein the tread surface at the lands is formed with a plurality of fine grooves shallower than the sipes, the edges of these fine grooves being curved. Further, the width of the openings of the fine grooves is larger than the width of the bottoms thereof. Further, the angle of the fine grooves with the circumferential direction of the tire is 42 to 60 degrees.

Abstract: The present invention aims to improve the wet performance while securing steering stability and holding down degradations in noise performance to minimum, and for this purpose, a pneumatic tire in which blocks are disposed at intervals at a tread portion thereof is arranged in that concave blocks with stepped concave portions that extend along block side edges, which face circumferential main grooves, and having a depth from a block top surface that corresponds to 20 to 70% of a block height are provided. The concave portions have a length in a tire circumferential direction of 40 to 95% of a length of the block side edges in the tire circumferential direction and a width in a tire axial direction of 2 to 20 mm.

Abstract: A bead portion 4 of a pneumatic tire 1 includes a vertical rising surface portion Sw1 which is connected to a bead base surface Sb through an arc bead heel surface Sh, and a straight or convex arc flange receiving surface portion Sw2 which is diagonally extending from the rising surface portion Sw1 radially outward and axially outward of the tire. In a normal internal pressure in which no load is applied, the flange receiving surface portion Sw2 is not in contact with a flange surface Rf, and in a load state in which 50% or more of normal load is applied, the flange receiving surface portion Sw2 comes into contact with the flange surface Rf.

Abstract: A pneumatic tire that improves riding comfort under normal driving conditions, and improves durability under run-flat conditions, while inhibiting a weight increase. This pneumatic tire includes a carcass layer and belt layer. The carcass layer contains two or more carcass plies constituted of organic fiber cords. The belt layer contains at least two belt plies, each arranged radially outwards from the carcass layer of the tire in a tread part. The tread part includes a tread reinforcement rubber layer that is located between the radially outer carcass ply and the radially inner belt ply. Each side wall part includes a side reinforcement rubber layer having a crescent-shaped cross-section, located inwards from the axially inner carcass ply. At least one of the carcass plies constituting the carcass layer is folded back about bead cores respectively of bead parts.

Abstract: A rubber-covered belt ply forms a belt layer. At least a majority of metal wires in the ply exist as metal wire bundles in which a plurality of metal wires of circular cross-sections and substantially equal wire diameters are aligned in parallel without being twisted together, the metal wire bundles being aligned planarly and in parallel with intervals between the metal wire bundles in a transverse direction. At least one layer, which is a cap layer in which organic fibers are covered with rubber and/or a reinforcing layer which is formed of rubber or whose main component is rubber, is disposed between the belt layer and a tread.

Abstract: The method of the invention consists, on the one hand, in serially recording on a tape of photosensitive film a succession of volume holograms each relating respectively to an item of information of a corresponding document to be made secure, each of these holograms being accompanied by an identification and positioning code printed on the same film, in developing and in fixing the holograms thus recorded, and on the other hand in printing at the same time the identity documents with their individual identification codes which are the same as those of the respective corresponding holograms, in adding an adhesive to the holograms after their fixing, and in adhesively bonding together each hologram and the corresponding document after verifying that their respective identification codes match.

Abstract: A shaped rubber body with improved uniformity in terms of weight and/or physical properties is produced by extruding a rubber strip by a positive displacement extruding system that includes, as seen from an upstream side of the rubber strip, a screw extruder unit, a gear pump unit and an extrusion head unit with an extrusion nozzle, which are connected in series with each other. The rubber strip is fed to a rotating support along a substantially straight passage extending from the screw extruder unit to the extrusion nozzle of the extrusion head unit, passed through a gap defined between a pair of pressure roll, and applied onto an outer surface of the support by one of the pressure rolls.

Abstract: For attaching at least one flat supplementary product to a printed product, one leaf of the printed product is brought from a folded configuration into an essentially horizontal orientation. A supplementary product is attached, especially by an adhesive, to this horizontal leaf, preferably from above. Supplementary products can be attached to the front side and to the rear side of the printed product. The supplementary product is, for example, a commercial sample or a card.

Abstract: In a method and apparatus to separate and transport flexible two-dimensional products, such as paper sheets having an adhesive, the products are supplied via a product supply stack to a separation device. The separation device includes at least one conveyor element. The products at the same time are only stabilized on an edge or a portion thereof and are free at the other portions thereof. The at least one conveyor element separates the products and convey these subsequently to a transfer location. The at least one conveyor element is multi-functional and has a flattened geometry. The at least one conveyor element is moved in a direction of movement essentially parallel to a plane of the product supply stack. The direction of movement moves from one free end of the products to a stabilized region of the products. At the same time, the at least one conveyor element moves below the frontmost product of the supply stack and subsequently seizes the frontmost product at its distant side and further conveys it.

Abstract: A tire changing machine comprises a chassis and a rotatable turntable configured to retain a wheel rim. The machine further includes a tower carrying a mount/demount head movable toward and away from the wheel rim. A saddle for retaining a tire in a generally upright configuration is also provided. In addition, the machines includes an ovalation mechanism operative to press on a tread portion of a tire mounted in the saddle so as to ovalate the tire.

Abstract: An adjustable tire mounting apparatus can be universally used to assemble various types of wheels and tires to each other. The apparatus includes a cone restricting movement of a wheel, a housing rotatable about the cone, a horizontal distance adjusting unit that adjusts a position of a horizontal movable body with respect to the housing in the radial direction, a vertical distance adjusting unit that adjusts a position of a vertical movable body with respect to the horizontal movable body in the vertical direction, a pressure roller disposed on the vertical movable body that presses a sidewall of a tire, expansion rollers that are disposed on the horizontal movable body and guide the bead of the tire to enter a rim of the wheel, and a control unit that controls operation of the horizontal and vertical distance adjusting units, depending on the types of the tire and wheel.

Abstract: A storm curtain assembly (10) includes a fabric curtain (11) which may be wound onto a roll (17) and stored within a canister housing (16) when not in use, and substantially unwound from the roll (17) to cover an opening in a building. When unwound, a lock bar (18) is engaged by the hooks (27) of the lock blocks (21) carried by the housing (16) and by lock tabs (22) carried by the housing (16). The lock tabs (22) extend through slots (28) formed in curtain (11) so as to be able to engage the lock bar (18). As such, the roll (17) and other drive or counterbalance components (15) carried in the housing (16) are protected from any forces on the curtain (11), such forces being absorbed by the housing (16).

Abstract: A roll-up barrier has a base, an end cap, a drive shaft connected between the base and the end cap, a rolling assembly, a resilient element and a flexible barrier. The end cap has an arresting mechanism having a control button and an arrestor. The rolling assembly is mounted rotatably around the drive shaft and has a rolling bushing. The rolling bushing has an actuator and multiple one-way arresting teeth. The resilient element provides a reposition force for rolling back the rolling assembly. The flexible barrier is mounted retractably around the rolling assembly. When the control button is pressed and rotated, the actuator detaches the arrestor from the arresting teeth to allow rotation of the rolling assembly. When the control button is released, the arrestor engages the arresting teeth to prevent the rolling assembly from rotation so the flexible barrier can be pulled out and held at a desired length.

Abstract: A window covering has a headrail, a plurality of lift cords extending from the headrail and a plurality of shade elements positioned sequentially below the headrail. Each shade element has an upper edge and a lower edge which edges are substantially parallel to one another and oriented transverse to the lift cords. The shade elements are positioned so that when the shade elements are in a closed position the lower edge of one shade element abuts the upper edge of an adjacent shade element and when the shade elements are in an open position, the lower edge of the at least one shade element is spaced apart from the upper edge of an adjacent shade element. A first cord is attached to the upper edge of each shade element and a second cord is attached to the lower edge of each shade element.

Abstract: A reinforcement assembly for a panel garage door, the assembly having multiple sliding locking members that are repositioned from a neutral or disengaged position on panel stiles to an active or engaged position bridging the hinge connecting adjacent stiles, such that adjacent panels are precluded from pivoting. Preferably, header and footer engagement assemblies are also provided to secure the door to the header and floor.

Abstract: A system for attaching a shade material to a roller having recesses in its surface includes inserting portions of the shade material into an associated elongated recess and retaining the material in the recess with an attachment member having peaks and valleys along its length for intermittent engagement with the material within the recess.

Abstract: A positioning plate of this invention comprises an outer side plate of a torus shape having an outer side plate hole formed eccentrically of the outer circumference, and an inner side plate of a torus shape having such an inner side plate hole eccentrically of the outer circumference that a leading end portion is fitted. The outer side plate is fitted in a stationary die hole, and the inner side plate is fitted in the outer side plate hole of the outer side plate.

Abstract: A cylinder block casting is disclosed having a bulkhead window formed therein, the bulkhead window is formed by a set core received in one of a chill assembly and an integral barrel crankcase core of a mold package.

Abstract: At least one feedcore and at least one wall cooling core are assembled with a number of elements of a die for forming a cooled turbine engine element investment casting pattern. A sacrificial material is molded in the die. The sacrificial material is removed from the die. The removing includes extracting a first of the die elements from a compartment in a second of the die elements before disengaging the second die element from the sacrificial material. The first element includes a compartment receiving an outlet end portion of a first of the wall cooling cores in the assembly and disengages therefrom in the extraction.

Abstract: A system for reclaiming sand from a casting process includes a chamber having an inlet, an outlet, and a plurality of baffles defining a circuitous path for the sand therebetween, a heating element for providing heat to the chamber, and a fluidizing distributor for directing the sand through the chamber. A method of reclaiming waste sand also is provided.

Abstract: The invention relates to a cooling device, which comprises a cooling fan and a heatsink. The heatsink is directly attached to the heating element to absorb its heat and the cooling fan is disposed on top of the heatsink to dissipate the heat. The heatsink includes a central heat dissipation body and a plurality of fins extending from the periphery of the central heat dissipation body. The central heat dissipation body has a fully-sealed hollow chamber filled with a cooling liquid and disposed an agitator. The agitator is disposed a magnetic element, and where the magnetic element corresponds to the rotor of the cooling fan must have a magnetically-attracting and mutually-dragging device in operation. By way of the magnetic attraction between the rotor of the cooling fan and the agitator, a better heat dissipation effect is secured, the chamber remains a fully-sealed room, and the cooling liquid overflow issue can be ruled out accordingly.

Abstract: A method for manufacturing an aluminum heat exchanger includes the steps of: obtaining a heat exchanger tube 2 by forming a Zn thermally sprayed layer on a surface of an aluminum flat tube core so as to adjust Zn adhesion amount to 1 to 10 g/m2; obtaining a heat exchanger core by alternatively arranging the heat exchanger tube 2 and an aluminum fin 3 and brazing the heat exchanger tube and the fin with end portions of the heat exchanger tube connected to aluminum headers in fluid communication; and forming a chemical conversion treatment coat (corrosion resistance coat) on a surface of the heat exchanger core by subjecting the surface of the heat exchanger core to chemical conversion treatment using at least one chemical conversion treatment agent selected from the group consisting of phosphoric acid chromate, chromic acid chromate, phosphoric acid zirconium series, phosphoric acid titanium series, fluoridation zirconium series, and fluoridation titanium series.

Abstract: The present invention offers an improved axial heat exchanger for exchanging heat between a gas medium and a fluid or liquid medium. The axial heat exchanger comprises a longitudinal and substantially axially extended outer channel that is adapted to enclose a flow of a first gas medium. The heat exchanger also comprises a plurality of substantially parallel inner channels that are adapted to enclose a flow of a second liquid medium. The inner channels are arranged inside the outer channel so as to extend substantially axially along the inside of said outer channel for enabling a transfer of heat between said first gas medium and said second liquid medium. The heat transfer is improved to some extent as the number of inner channels increases and it is further improved in that at least one of the inner channels is joined with at least one elongated sheet.

Abstract: The provision of a pipe-type heat exchange device wherein solder can be reliably filled between pipes attached together, resulting in a high heat transfer efficiency, comprising two pipes attached to each other through which fluids with differing temperatures are passed respectively, wherein a bar is attached to the pipes and wherein the pipes and the bar are subjected to brazing.

Abstract: An electronics cabinet for storing a plurality of electronic devices therein is provided and includes a fan and an evaporative cooler. The fan draws a flow of air into the cabinet, circulates the flow of air through the evaporative cooler, and then across the electronic devices for removing heat produced by the electronic devices. The evaporative cooler removes heat from the flow of air by absorbing heat from the flow of air and then dissipating the heat by evaporating a liquid into a secondary airflow, which is directed out of the cabinet. The cabinet includes a cold air plenum having an actuator for adjusting a cross-sectional area of the cold air plenum to control the airflow through each of the supports.

Abstract: A plunger mechanism comprises an adjustable bypass valve. Depending on well parameters, a user may desire to adjust the descent rate of a plunger in service. The present device allows the user to vary or adjust the bypass orifice to alter the flow of liquid through the plunger core.

Abstract: An apparatus for controlling vertical movement of a tubular within a wellhead includes an anchor spool connected atop the wellhead, and a detachable superstructure supporting the tubular. The anchor spool provides connectors for detachably connecting bottom ends of at least two piston cylinders of the detachable superstructure. The tubular may be a landing joint or a high-pressure mandrel of either a well stimulation tool, or a well isolation tool. The apparatus provides unobstructed access to a top end of the tubular. The anchor spool includes an elongated sidewall and an axial passage through which a tubing hanger can be reciprocated. The height of the sidewall permits the apparatus to be used for landing/removing a tubing string even if the anchor spool is mounted directly to a blowout preventer (BOP).

Abstract: A pipe-gripping clamp assembly is provided for use on a top drive unit to grip sections of drilling pipe. The clamp assembly includes of a pair of hinged jaws that are opened and closed by a pair of rams attached to the jaws and the frame members that make up the assembly. Each jaw has a jaw insert that is surfaced to firmly grip a pipe and can be easily replaced once worn beyond service. The rams are either hydraulically or pneumatically operated.

Abstract: A method for identifying annular gas sources in a wellbore is disclosed. In one embodiment, the method comprises providing a set of parameters, wherein the set of parameters corresponds to depths in the wellbore. In addition, the method comprises analyzing annular gas in the wellbore to provide isotopic data of the annular gas. The method further comprises correlating the isotopic data to the set of parameters to identify the annular gas source.

Abstract: A process for treating produced water to generate high pressure steam. Produced water from heavy oil recovery operations is treated by first removing oil and grease. Feedwater is then acidified and steam stripped to remove alkalinity and dissolved non-condensable gases. Pretreated produced water is then fed to an evaporator. Up to 95% or more of the pretreated produced water stream is evaporated to produce (1) a distillate having a trace amount of residual solutes therein, and (2) evaporator blowdown containing substantially all solutes from the produced water feed. The distillate may be directly used, or polished to remove the trace residual solutes before being fed to a steam generator. Steam generation in a packaged boiler, such as a water tube boiler having a steam drum and a mud drum with water cooled combustion chamber walls, produces 100% quality high pressure steam for down-hole use.

Abstract: A method and apparatus for actuating a downhole tool is provided. The apparatus of the present invention includes a remotely energized actuator device that facilitates storage of energy needed to actuate a downhole tool after the device is placed downhole. By energizing the tool downhole, surface exposure to potential safety hazards is reduced.

Abstract: An expandable injector pipe has openings and a cover sleeve preferably secured at opposed ends with offset openings. Expansion of the base pipe causes the cover sleeve to expand while keeping the openings in the cover sleeve misaligned with the openings in the base pipe. Pressure from within the base pipe flexes the resilient cover sleeve to allow fluid to exit through the cover sleeve. Upon removal of applied pressure, the cover sleeve moves back against the base pipe to cover the openings in the base pipe to prevent flow in the reverse direction.

Abstract: A method of forming a wellhead including: drilling a wellbore; positioning an outer casing at least partially within an upper portion of the wellbore; positioning a first tubular member within the outer casing; expanding at least a portion of the first tubular member into contact with an interior surface of the outer casing; positioning a second tubular member within the outer casing and the first tubular member; and expanding at least a portion of the second tubular member into contact with an interior portion of the outer casing; wherein, after expanding the portions of the first and second tubular members into contact with the interior portion of the outer casing, at least a portion of the second tubular member is positioned within the first tubular member; and wherein, after expanding the portions of the first and second tubular members into contact with the interior portion of the outer casing, the first tubular member and the second tubular member define a passage there between.