Abstract: A method of cementing a wellbore comprising preparing a cement composition comprising a water-soluble aromatic sulfonated polymer, and placing the cement composition into the wellbore, wherein the cement composition develops a compressive strength of greater than about zero in less time than a similar cement composition having a comparable thickening time and lacking a water-soluble aromatic sulfonated polymer. A cement composition comprising a water-soluble aromatic sulfonated polymer, wherein the cement composition develops a compressive strength of greater than about zero in less time than a similar cement composition having comparable thickening time and lacking a water-soluble aromatic sulfonated polymer.

Abstract: A system for injecting a substance into the annular space surrounding a well tubular with an assembly to be inserted into a well tubular. The assembly includes a cutting part capable of making a hole through a well tubular; a substance chamber for storage of the substance and a substance injecting part capable of injecting the substance into the annular space. The system includes a cutting part having a chamber with a first end and a second end and having a wall surrounding the chamber and including at least one entrance for substance at the first end and including an exit for delivery through the well tubular and into the annular space at the second end.

Abstract: A subterranean barrier and method for forming same are disclosed, the barrier including a plurality of casing strings wherein at least one casing string of the plurality of casing strings may be affixed to at least another adjacent casing string of the plurality of casing strings through at least one weld, at least one adhesive joint, or both. A method and system for nondestructively inspecting a subterranean barrier is disclosed. For instance, a radiographic signal may be emitted from within a casing string toward an adjacent casing string and the radiographic signal may be detected from within the adjacent casing string. A method of repairing a barrier including removing at least a portion of a casing string and welding a repair element within the casing string is disclosed. A method of selectively heating at least one casing string forming at least a portion of a subterranean barrier is disclosed.

Abstract: An in situ process for treating a hydrocarbon containing formation is provided. The process may include providing heat from one or more heaters to at least a portion of the formation. The heat may be allowed to transfer from the one or more heaters to a part of the formation such that heat from the one or more heat sources pyrolyzes at least some hydrocarbons within the part. Hydrocarbons may be produced from the formation.

Abstract: A progressing cavity well pump system has a stator secured to a string of tubing. A drive head at the surface rotates the tubing and the stator. The pump rotor is held against rotation by an anchor mechanism. The tubing, stator, rotor and anchor mechanism are installed in the well in a single trip.

Abstract: An apparatus for drawing down a fluid level in a wellbore. The apparatus comprises a first tubular disposed within the wellbore so that a wellbore annulus is formed. The apparatus further includes an annular nozzle operatively attached to the first tubular, and wherein the annular nozzle comprises: an annular adapter; and, a suction tube that extends from the annular member into an inner portion of the first tubular. The apparatus further comprises a second tubular concentrically disposed within the first tubular so that a micro annulus is formed therein. The apparatus may further contain a jetting device for delivering an injected medium injected from the micro annulus into the wellbore annulus, and a stabilizer that stabilizes the second tubular within the first tubular. A method of drawing down a fluid level is also disclosed.

Abstract: A trigger device keeps a downhole tool from setting until it is properly positioned. Regardless of the type of tool or the type of associated trigger, the retainer of the present invention is combusted. The material is preferably one that combusts readily such as a material used in fuses for explosives. The battery requirements are to simply create the brief spark that starts the combustion, making the battery size significantly smaller than what would be needed to power a heater to melt materials that were used in the past.

Abstract: A method of operating a safety joint that allows disconnection from a downhole section of a drill string without rotating the drill string. In an example class of embodiments, the innovative safety joint includes a sleeve with a j-slot that fits to a lug attached to the mandrel. A piston is attached to the sleeve. The safety joint is disconnected by first pulling up on the string to shear a set of shear pins, the upward movement also lifting the sleeve and piston. As the piston lifts, a passage through a part of the piston allows fluid to move from an upper chamber to a lower chamber. A valve prevents fluid from moving back up into the upper chamber, so that the lower chamber acts as a stop to prevent the piston and sleeve from lowering again. Downward pressure on the drill string forces a lug against the j-slot, causing the sleeve to rotate until the lug is aligned with a vertical slot of the j-slot.

Abstract: A method and apparatus are provided for installing control lines and pipe into a well. The pipe-holding spider that is normally mounted on the rig floor is adapted for easy disassembly and reassembly when the pipe slips within the spider are not engaged with the outer surface of the pipe string so that upon disassembly, a control line guide becomes vertically movable. The control line guide is adapted for being controllably elevated to a distance above the rig floor, thereby providing personnel access to a portion of the length of the pipe string below the elevated control line guide and above the rig floor for securing control line to the pipe string using a fastener.

Abstract: A method for converting a kelly rig for handling casing includes the formation of a torque reaction guide with elongate members available at a drill site including for example, any of drill collar stands, casing strings, drill pipe stands and cables held in tension. A method for converting a kelly rig for handling casing may include the step of installing a torque reaction guide in a simple way, such as by securing the track to the monkey board. In one embodiment a torque reaction frame is used for securing between a torque generating device and a torque reaction guide that operates in a float mode to allow for misalignment of the torque reaction guide relative to the well hole center.

Abstract: A gripper for use in a downhole tool is provided. The gripper can include an actuator, a toe assembly, and an expandable assembly. The toe assembly can be a leaf-spring like elongate continuous beam. The expandable assembly can be a linkage including a plurality of links. The linkage is coupled to the actuator such that the actuator expands the expandable assembly which in turn expands the toe assembly. In operation, during one stage of expansion radial forces are transmitted to the toe through both interaction of a rolling mechanism on the toe with the expandable assembly and pressure of the linkage assembly directly on an inner surface of the toe.

Abstract: The invention relates to a compressed air foam producer, wherein a fire or decontamination specific additive is injected directly into the foam forming flow supplied to the main water flow and/or the main water flow. A mixing pump for the foaming agent draws off an auxiliary and motive water flow, wherein initially the additive and then the foaming agent is injected. The foaming agent-additive-water mixture, which is produced directly on site, is mixed well together and with the main water flow ensuring a fine, uniform distribution of the additives in the compressed air foam. The thus produced compressed air foam ensures optimal, economical and environmentally friendly fire-fighting and decontamination.

Abstract: Foams and methods of using foams for fighting fires in confined areas (i.e., mine shafts) are provided. In one embodiment, a foam for extinguishing a fire is provided. The foam includes a surfactant; a non-flammable liquid; and an inert gas having a density substantially less than air. Preferably, the density of the foam is substantially less than the density of air. The light foam will allow a basic form of directional control of the foam because the light foam will float towards the ceiling of a cavern or mine shaft. This offers fire fighters several options in extinguishing an underground fire.

Abstract: A fire extinguisher unit that can be grasped and operated with a single hand. The unit includes a single-hand fire extinguisher and a holder for releasably supporting the fire extinguisher on a vertical surface. The fire extinguisher has a cylindrical canister housing, a flexible internal pouch containing fire suppressant, means for externally pressurizing the pouch, a valve for regulating the flow of fire suppressant from said pouch, and a spray head connected to the valve for actuating the valve between open and closed positions and for directing the flow of fire suppressant from said pouch. The holder has an elongate base, means for mounting the elongate base to a vertical surface, and a clamp fixed to each end of said elongate base.

Abstract: A three point hitch for a work machine includes a first and a second draft link each having a mounting end portion and a free end portion opposite the mounting end portion. Mounting end portion being mounted to a first side of a work machine to allow upward and downward pivotal movement of the free end portion beside an upwardly and downwardly extending fixed structural element of the work machine. Mounting end portion of the second draft link being mounted to a second side of the work machine opposite the first side to allow upward and downward pivotal movement of the free end portion of the second draft link. A sway restrictor mounts on the free end portion of the first draft link and restricts sideward swaying thereof toward and away from the structural element. A counterweight for use with the three point hitch is interchangeable with a fluid motor.

Abstract: An object of the invention is to provide a blade preferable for being mounted on various kinds of work machines, particularly work machines for digging, carrying of soil and leveling, in which increase in a quantity of soil per tractional force is achieved with a simple structure to reduce consumption horsepower and increase fuel consumption efficiency thereby leading to low cost. A blade comprises a central front face section having a linear first cutting edge at a bottom end thereof, a jointed front face section having a second cutting edge which continues from the first cutting edge and extends backward at a predetermined angle, and an end front face section having a third cutting edge which continues from the second cutting edge and extended forward at a predetermined angle. The first cutting edge is protruded forward of the second and third cutting edges in their top view or intersection points of the second and third cutting edges are disposed backward relative to an extension of the first cutting edge.

Abstract: The present invention relates to a method for controlling drilling parameters during an initial phase of rock drilling with a drilling machine. In accordance with the invention the percussion pressure and feed pressure of the drilling machine are controlled as continuously increasing functions during the initial phase. The present invention also relates to such a system.

Abstract: A drilling machine is provided for breaking chips formed by drilling action into manageable lengths. The drilling machine comprises a first gear having a first axis of rotation, and a cam follower surface. It has a second gear having a second axis of rotation coincident with the first axis of rotation. A housing is provided configured to support the first gear and the second gear, the housing having a cam surface, a spring and a tool holder spindle having a third axis of rotation. The first and second gears are configured to impart both a linear feed and a rotation to the spindle. The first and second axes of rotation are coincident with the third axis of rotation such that the cam surface is urged into contact with the cam follower surface by the spring. The cam surface and the follower surface are shaped such that when the first gear rotates, the first gear is caused repeatedly to retract and then to advance, breaking chips that are formed.

Abstract: It is an object of the invention to provide a technique in a power tool having a detachable bit holder for preventing a bit holder from being detached from the tool body even if unexpected external force is exerted on an operating member for lock release. A representative power tool includes a tool body, a single holder mounting portion. The holder mounting portion removably holds a bit holder selected from multiple kinds of bit holders for holding multiple kinds of tool bits in different manners. Each bit holder includes a cylindrical portion, a through hole formed through the cylindrical portion, an engaging member disposed within the through hole, a cylindrical operating member axially movably fitted on the cylindrical portion between a movement prevented position and a movement allowed position.

Abstract: It is an object of the present invention to provide an effective technique for reducing the size of a mode switching device of a power tool. A representative power tool comprising a mode switching device that includes a mode switching member turned by manual operation, a linearly moving driven-side member and a mode switching mechanism actuated by linear motion of the driven-side member. The actuating member is disposed on the mode switching member such that the initial position of the actuating member is located in a position displaced in a radial direction from the rotation axis of the mode switching member. When the mode switching member is turned, the actuating member revolves in a circular arc movement in contact with the driven-side member to linearly move the driven-side member. The actuating member can move radially inward of the mode switching member from the initial position toward the rotation axis of the mode switching member with respect to the mode switching member.

Abstract: The invention relates to a method of fastening a guard rail (60) to a concrete slab (100) by means of a self-expanding and self-undercutting bolt (1, 1?, 1?) comprising a dowel (10) having expanding lugs (17) and an expansion core (20, 23), the method comprising a phase consisting in drilling a hole (103?, 103?) in the slab, a phase consisting in driving the bolt in to a desired depth (E1+E2) independent of the depth of the hole, a dynamic tightening phase (h) resulting in the formation of the undercut and a static tightening phase of the guard rail. The guard rail bolt comprises the dowel (10) and a counter-dowel (20). The dowel (10) comprises at its fastening end (11) a guard rail fastening head (13) rigidly connected at its screwing end (12) by means of incipient fracture means (15) to a ring (16) provided with expansion lugs (17).

Abstract: A gasketless waterproof ingress prevention enclosure for electronics wherein the enclosure does not rely on traditional sealing means to restrain water. The enclosure includes a five-sided open bottom air tight cavity comprising a liquid volume fluidly coupled to a gas volume creating a gas-fluid coupling layer, rising in elevation within cavity. Changing cavity pressure equal to rising compressed liquid pressure prevents exposure to said electronic enclosure components to a maximum design depth of 15 feet of water below surface level or a column height of 15 feet of water over the bottom of the enclosure bell bottom, independent of the enclosure's distance below surface grade. The apparatus forms a telescoped and recessed inner chassis assembly in its fully closed position. The prevention enclosure also provides a method for sealing comprising the steps of gasketless water prevention, electronics mounting, and water damage component protection.

Abstract: A device that for repairing a nonmetallic electrical outlet box having one or more screw holes that are stripped, damaged or missing is described. The device provides a replacement screw tab with a screw hole, as well as side tabs that secure the device to a nonmetallic electrical outlet box.

Abstract: The present invention relates to a mounting bracket having a plurality of apertures on both sides of a main body of the mounting bracket and a turning surface disposed at an angle of 90 degrees from a rear end of the main body. The invention is characterized in that the main body includes a positioning member at a predetermined position of the main body for temporarily fixing a nail or a screw, and the positioning member includes an accommodating space therein for receiving the nail or a screw and fixing the nail or a screw onto the main body.

Abstract: One aspect of the present invention includes a cover assembly for a floor box supporting at least one receptacle mounted therein. The assembly comprises at least one cover plate, at least one lid and a lock. The cover plate for at least partially covering the floor box includes at least one lock receiving channel. The at least one lid is pivotally secured to the cover plate for movement between a closed position covering the receptacle and an open position permitting access to the receptacle. The lock retains the lid in the closed position. Also, the lock is disposed at least partially within the channel and moveable between a locking position for retaining the lid in the closed position and at least one release position wherein the lid is not retained by the lock.

Abstract: A waterproof structure and a waterproof method for a wire connecting part, wherein the insulating coatings of a plurality of wires are peeled, and exposed cores are connected to each other by welding, soldering, or through a crimp style terminal. A foam sheet impregnated with a silicone and an adhesive tape are wrapped around the connecting part, and the silicone is filled in clearances between the connected cores for waterproofness.

Abstract: A protective housing for electrical connections has a base and a selectively removable cover defining a chamber between the cover and the base. The cover includes a plurality of openings, which provide for passage of electrical cords and permit liquid to drain from the chamber. Electrical connections rest upon a raised area of the base that serves as a floor for the chamber. The floor is sloped from a raised central area towards the edges of the floor to drain liquid out of the chamber. The cover and the base form an interference fit and a flush seam located below the platform. The openings are generally located at the seam so that they may serve as the passageway through which water and debris exit the chamber. The housing is made of material that floats in liquid to maximize protection of the electrical components.

Abstract: A telecommunications cable and separator spline are disclosed. In one embodiment the cable comprises a cable jacket defining an elongate cable core, a conductor assembly comprising four twisted pairs of conductors disposed along the core and a plurality of parallel elongate localised and like distensions in an inner surface of the cable jacket. The distensions are substantially evenly spaced about an inner surface of the cable jacket and prevent the conductor assembly from coming into contact with the inner surface. In particular embodiment, the distensions are the result of a series of filler elements placed between the cable jacket and the cable core and which wind helicoidally along and about the cable core. The separator spline is comprised of first and second elongate dividing strips having a substantially H shaped cross section and arranged side by side. The spline twists helicoidally along its length.

Abstract: A multi-pair cable having a double jacket, including an inner jacket and an outer jacket. The inner and outer jackets each including channels formed on an inner surface. The channeled double jacket of the cable reducing the occurrence of alien crosstalk between adjacent cables by reducing the overall dielectric constant of the cable and increasing the center-to-center distance between adjacent cables. The channeled double jacket of the cable still accommodating existing standard cable connectors.

Abstract: The present invention includes a high performance communications cable exhibiting reduced cross-talk of any form between transmission media that includes one or more core support-separators having various shaped profiles which define a clearance to maintain a spacing between transmission media or transmission media pairs. The core may be formed of a conductive or insulative material to further reduce cross-talk and improve other electrical properties as well as reduce flame and smoke spread. The cable and separators are comprised of principally polymer blends that include olefin and/or fluoropolymer and/or chlorofluoropolymer based resins with and without inorganic additives such as nano-clay composites. These unique blends offer both flame and smoke suppression while maintaining the characteristics necessary to improve electrical performance and allow for severe cost reduction over conventional separators.

Abstract: A multilayer insulation-coated electric conductor for a coil constituting a circuit by forming a welded portion in the coil, wherein at least one layer of the multilayer insulation-coating layers of the coated metal conductor is composed of at least one resin selected from the group consisting of a polyimide resin, a polyesterimide resin, and an H-class polyester resin.

Abstract: A connecting bar arrangement for an electric switch is disclosed. The arrangement includes aligned connecting bars. An electric switch is further disclosed, especially a low-voltage power switch including the type of connecting bar arrangement. A localized reduction of the cross-sectional area of at least one of the connecting bars for localized compression of current lines in the direction of alignment is provided in order to act against the Kelvin effect, especially to prevent, more particularly, an increased use of contact pieces based on the removal of switching contacts. Recesses in the form of slots are arranged in external areas, close to the front surfaces. The recesses are parallel to the front surfaces and extend in a transversal manner in relation to the direction of alignment over the surface of each respective connection bar.

Abstract: A process carrier is capable of supporting printed circuit boards during manufacturing and testing. The process carrier includes a base plate, a first top plate and a second top plate. The base plate has an upper surface including a recessed area sized to receive a panelized group of printed circuit board substrates and a lower surface. The first top plate is coupleable to the upper surface of the base plate during a first manufacturing process. The first top plate includes a plurality of connected rails configured to secure the panelized group of printed circuit board substrates. The second top plate is coupleable to the upper surface of the base plate during a second manufacturing process. The second top plate is configured to cover the panelized group of printed circuit board substrates.

Abstract: A suspension board with circuit has a metal supporting board, an insulating layer formed on the metal supporting board, a conductive pattern formed on the insulating layer and including a terminal portion for connecting to an external terminal, and an antistatic barrier layer formed on the conductive pattern. The antistatic barrier layer includes a metal thin film and a semiconductive layer having at least one end facing the terminal portion and at least the other end in contact with the metal supporting board.

Abstract: A chip package with COB configuration is disclosed. A thin film substrate as a carrier of a wire-bonded chip has a slot, wherein the electrical connection between the chip and the thin film substrate are a plurality of bonding wires through the slot. The thin film substrate includes a patterned metal core with resin and at least a solder resist layer on the patterned metal core, wherein the patterned metal core has a plurality of finger pads and a plurality of ball pads. The finger pads are disposed around the slot. When the active surface of the chip is attached to the thin film substrate, the patterned metal core provides a good thermal dissipation for the chip. Moreover, the chip package using thin film substrates can reduce the cost of the substrate and the overall thickness of the package and enhance the cushion effect against thermal stress.

Abstract: A transition layer 38 is provided on a die pad 22 of an IC chip 20 and integrated into a multilayer printed circuit board 10. Due to this, it is possible to electrically connect the IC chip 20 to the multilayer printed circuit board 10 without using lead members and a sealing resin. Also, by providing the transition layer 38 made of copper on an aluminum pad 24, it is possible to prevent a resin residue on the pad 24 and to improve connection characteristics between the die pad 24 and a via hole 60 and reliability.

Abstract: According to various aspects, exemplary embodiments are provided of gaskets that can protect fingerprint readers from receiving electrostatic discharge surges when a user's finger is placed in contact with the electronic scanning portion of the fingerprint reader. In exemplary embodiments, a gasket can provide an electrically-insulative barrier between the exposed contact points on the sides of the fingerprint reader, the electrostatic discharge, and the electrically-conductive side of the gasket. The gasket can also include an electrically-conductive side that provides a relatively short path to ground for the electrostratic discharge.

Abstract: According to various aspects of the present disclosure, exemplary embodiments are provided of EMI shielding apparatus capable of providing board level EMI shielding for one or more electronic components while also providing dissipation of heat generated by the one or more electronic components. In one particular embodiment, an apparatus generally includes a board level shield having at least one resiliently compressible EMI gasket disposed along at least a portion of the board level shield. At least one thermally-conductive compliant material is disposed relative to an inner surface of the board level shield and to the one or more electrical components. The at least one thermally-conductive material can form a thermally-conducting heat path from the one or more electrical components to the board level shield.

Abstract: An integrated circuit leaded stacked package system including forming an no-lead integrated circuit package having a mold cap, and attaching a mold cap of an extended-lead integrated circuit package facing the mold cap of the no-lead integrated circuit package.

Abstract: A semiconductor device includes a semiconductor chip comprising a semiconductor substrate including microelectronic devices, first interconnection lines disposed on the semiconductor substrate and electrically connected to the microelectronic devices, pads connected to the first interconnection lines, wherein the pads are disposed on an edge of the semiconductor chip, and an interconnection substrate disposed on the semiconductor substrate, wherein the interconnection substrate includes second interconnection lines connected to a part of the pads, wherein a maximum distance between the pads is less than half a length of one side of the semiconductor chip, and heights of the pads are substantially the same.

Abstract: A bushing comprising a core, at least one sleeve surrounding the bushing and at least one elastic layer disposed between the sleeve and the core. The elastic layer and the sleeve are interrupted by a gap, and the gap width is elastically changeable. The bushing may be adapted to different stress situations, and the bushing may characterized in that the ends of the elastic layer on the side of the gap are provided with recesses.

Abstract: A small, inexpensive, lightweight vehicle in the nature of a wheeled buggy is provided for movement over frozen bodies of water such as ponds and lakes, with the vehicle being powered by a gasoline engine which is alternatively used to power an ice auger.

Abstract: The invention relates to a device for charging a drilling device of an earth or rock drilling apparatus with a double rod. The device has a rotatable revolver magazine, which is designed with double receiving spaces for receiving two tube parts that are inserted into one another.

Abstract: A system and method is provided for protecting the exterior surface of drill pipe bodies from abrasion and wear during drilling operations alternatively using a hardbanded pipe collar inserted into a drill pipe body; a hardbanded pipe sleeve slid over a section of the drill pipe body; or a hardbanded circumferential built up section of the drill pipe body.

Abstract: A tool for expanding a hole having a vertical axis in the earth has at least one set of two opposed compactor units constrained to separate and retract in a direction at a right angle to the axis of the hole, and a drive mechanism coupled to the set of compactor units providing force to separate the compactor units, urging the units against a wall or walls of the hole, compacting the earth and enlarging the hole.

Abstract: An elongated stripper rubber having a converging internal passage extending to a neck portion elastically expanded to snugly receive a drill string. The elongated stripper rubber is adhered to a steel core having a truncated conical load bearing surface containing an annular gasket cavity containing a truncated conical gasket. The volume of elastic material protruding from the truncated conical load bearing surface can be compressed into the gasket cavity between the steel core and a truncated conical annulus in an outer housing.

Abstract: A hard material bit for a drilling head (2) includes at least two cutting edges (4a, 4b) over a bit length (L) in a direction transverse to a bit drilling axis (A), with one of the at least two cutting edges (4a) being located adjacent to a first side surface (5a) of the bit and another of the at least two cutting edges being located adjacent to the second side surface (5b) of the bit spaced form the first side surface (5a) by a thickness (D), the bit further including a base surface (6) located opposite the cutting edges (4a, 4b) at a height (H) along the drilling axis (A), and two recesses (7a, 7b) formed in respective longitudinal portions of the base surface (6) located opposite the one and the another of the at least two cutting edges (4a, 4b), respectively, and extending up to the first and second side surfaces (5a, 5b), respectively.

Abstract: An apparatus (100) such as a portable weight measuring device for the purpose of simultaneously determining weigh and time data purposes includes a container support member (104) having a container engagement portion (102) and a time-determining device (108). A weight-determining device (106) is mounted in the container engagement portion (102). The apparatus can includes data input and out devices, such as an optical connection (406) and a display (110). When a container, such as a piece of luggage, is engaged and lifted by the apparatus, the container weight along with the date and time are output on a display. When container weight exceeds a limit, a warning indicator (112) is activated.

Abstract: Disclosed is a crawler robot which, even of a small size, can climb over a high step and which can perform various aspects of operations. Rollers, are arranged at apexes of triangular frames, and elastic crawlers are wrapped around the rollers, with the two frames being connected by a central support shaft. Rotatably provided to the central support shaft is a one-joint link composed of a first link and a second link connected together by a rotation shaft. An end portion of the second link is rotatably connected with a front shaft of a subordinate crawler device equipped with crawlers wrapped around rollers. As a result, the crawler robot is composed of a triangular crawler device and the subordinate crawler device connected together by the one-joint link. The crawler robot can be operated by rotating and bending the link and by rotating the crawler devices in arbitrary directions.

Abstract: A side frame assembly for an electric wheelchair suspension includes a supporting frame unit with a rider-supporting frame, a front caster frame, an upper link having a front end connected pivotally to the front caster frame, and a lower link disposed under the upper link and having a front end connected pivotally to the front caster frame. A drive wheel frame has a front lower end connected pivotally to a pivot portion of the supporting frame unit. A connecting frame has an upper pivot portion connected pivotally to a rear end of the upper link, a lower pivot portion connected pivotally to a rear end of the lower link, and a rear pivot portion connected pivotally to the rear upper end of the drive wheel frame.