Abstract: Phase-controlled well flow control. A well system includes a flow control device which regulates flow of a fluid in the well system, the flow control device being responsive to both pressure and temperature in the well system to regulate flow of the fluid. A flow control device includes a flow regulator for regulating flow of a fluid through the flow control device, and an actuator which is operative to actuate the flow regulator in response to a predetermined relationship between a phase of the fluid and both pressure and temperature exposed to the actuator. A method of controlling a phase change of a fluid in a well system includes the steps of: flowing the fluid through a flow control device in the well system; and adjusting the flow control device in response to both pressure and temperature in the well system.

Abstract: An apparatus for screening earth formation components includes: a base pipe configured to allow the passage of formation fluid therethrough; and a foam layer disposed radially outwardly of the base pipe and configured to allow the passage of formation fluid therethrough and minimize the passage of formation solids therethrough, the foam layer including a plurality of hollow structures forming windows therebetween. A method of manufacturing an apparatus for screening earth formation components is also disclosed.

Abstract: A direct drive drawworks has a permanent magnet motor, a shaft extending from the permanent magnet motor so that the permanent magnet motor directly rotates the shaft, and a drum connected to the shaft away from the permanent magnet motor such that the rotation of the shaft causes a corresponding rotation of the drum. The permanent magnet motor has a housing, a stator positioned in the housing, and a rotor cooperative with the stator. The rotor has a drive plate affixed thereto. The shaft is directly connected to the drive plate. A bearing housing rotatably supports the shaft.

Abstract: A containment and protection system for wells in the oil and gas industry may solve the problem of crude oil, salt water and chemicals from absorbing into the ground and contaminating the ground, water and animals. The system may provide safety for landowners, workers and livestock. The system may attach around a wellhead and flowline. The system may be dug into the ground so that it is below the surface casing and then sealed and secured thereto. A lid of the system may close overtop of the well to make it secure and leak proof. The lid may also be insulated to hold in warmth, thereby reducing the need to insulate the wellhead. The system may provide safeguards that may shut down the pump driver or close valves to stop flow from the well and flowline under certain conditions.

Abstract: A lubricator for use with a coiled tubing injector comprising an elongated housing having a first end and a second end. There is a guide system disposed in the housing for guiding coiled tubing passing through the housing, a first director proximal the first end of the housing to direct the coiled tubing in a first direction and a second director proximal the second end of the housing to direct the coiled tubing in a second direction.

Abstract: A gripper for use in a downhole tool is provided. The gripper can include an actuator, an engagement assembly, and an expandable assembly. The engagement assembly can comprise a leaf-spring like elongate continuous beam. The expandable assembly can comprise a linkage including a plurality of links. The linkage can be coupled to the actuator such that the actuator expands the expandable assembly which in turn expands the engagement assembly. One or more keyed connections can inhibit rotational misalignment of the expandable assembly from the engagement assembly. In operation, during one stage of expansion radial forces are transmitted to the engagement assembly through both interaction of a rolling mechanism on the engagement assembly with the expandable assembly and pressure of the linkage assembly directly on an inner surface of the engagement assembly. The one or more keyed connections can preferably facilitate full retraction of the expandable and engagement assemblies.

Abstract: A logging instrument, movably arranged sealing unit and jet pump mount on a flexible smooth pipe. Pump diffuser output connects to the annular space, the nozzle thereof connected to the pipe inner cavity. An in-channel return valve supplies pumped out medium. Circulation valves are arranged in the tubing string above the packer and carrier ring with an opening for mounting an element is disposed above said circulation valves. The element is in form of a body filled with elastic space plates set and thrust washers and thrust pressure element situated thereabove. Support socket with thrust flange made on lower end thereof and with movable thrust collar mounted thereon secures in a body lower part. A sealing ring is placed between the thrust collar and the lower part of a body. The invention increases operational reliability and productivity of the device during treatment of a productive formation and well testing.

Abstract: This invention is a solvent based gravity drainage process whereby the vertical growth rate of the chamber is restricted by placing, monitoring and managing a buoyant gas blanket at the top of the vapour chamber. This invention reduces the heat loss to the overburden as well as providing a means to preserve a barrier layer of bitumen saturated reservoir sand at the top of the pay zone in reservoirs where there is limited or no confining layer present.

Abstract: A wireline configurable well logging instrument is connected to a drill pipe carrier and movable from a retracted position to an extended position. The drill pipe carrier is positioned on a pipe string that may comprise a portion of wired pipes communicatively coupled at each joint. Various embodiments for communication between the drill pipe carrier and the well logging instrument are disclosed, such as use of inductive couplers, wires and combinations thereof.

Abstract: A downhole separator has first and second separation sections each with a housing defining an interior cavity divided into a first chamber and a second chamber by a flow restricting bearing housing. Each separation section has at least two pumping stages that pump production fluid into the first chamber and to the bearing housing. The bearing housing limits flow into the second chamber and generates a pressure drop in production fluid entering the second chamber, separating gas from liquid. A vortex generator in the second chamber segregates the liquid to the outside and the gas to the inside of the second chamber. The upstream separation section has a greater capacity than the downstream separation section.

Abstract: A downhole separator has first and second separation sections each with a housing defining an interior cavity divided into a first chamber and a second chamber by a flow restricting bearing housing. Each separation section has an internal pump that pumps production fluid into the first chamber and to the bearing housing. The bearing housing limits flow into the second chamber and releases pressure on gas in the production fluid entering the second chamber, separating gas from liquid. A vortex generator in the second chamber segregates the liquid to the outside and the gas to the inside of the second chamber. The bearing housing of the upstream separation section has a greater capacity than the bearing housing of the downstream separation section.

Abstract: Separating gas from liquid down hole in a well by a downhole gas separator, gas is separated and passed to the well annulus and liquid is passed to a submersible pump at a calibrated flow rate at which liquid is vacated from a separation chamber, the length of the separation chamber providing sufficient space for gas separation as the liquid is pumped from the separator. The gas separator, limiting the amount of fluid passed to the separation chamber at less than the pumping rate of the submersible pump, creates a fluid vortex causing the separated liquid to move to the periphery and separated gas to pass near the axial center of the separation chamber. The separated gas passes to the well annulus and the liquid passes to the inlet of the submersible pump.

Abstract: Structures can be formed downhole by accumulating already existing materials and/or materials introduced into a well to perform a specified function. The formed structures may be used to obstruct fluid flow of production or injection fluids, carry mechanical loads, control electrical or magnetic properties of components, mechanically actuate a component, as well as others. The materials may be induced to form the specified structure, such as by application of a potential downhole. For example, electrical, magnetic, sonic, biological potentials, or a combination thereof may be established downhole to form specified structures in specified locations to perform specified functions.

Abstract: A downhole gravel pack completion with an integrated inflow control device. The gravel pack completion with an integrated inflow control device can include a first tubular member disposed at least partially within a second tubular member. A chamber can be formed between the first tubular member and second tubular member. A screen can be connected with the second tubular member and can encircle at least a portion of the first tubular member. A selectively openable flow port can be formed through the first tubular member, and an inflow control device can be formed through the first tubular member. The flow port and the inflow control device can be located within the chamber.

Abstract: The invention is related to the field of oil and gas industry, particularly, to the methods of oil or gas formation fracture using proppants, i.e. to the technologies of making fracture cracks, and may be used for underground formations processing, particularly for oil formation fractures. In the method of oil formation fracture including high-rate fluid injection into the formation and addition of a proppant into the fluid, polydicyclopentadiene material is used as the proppant. The method enables ensuring a lower friction during the proppant injection into the well retaining the cracks permeability due to the specific density of the proppant close to 1, its high thermal stability and high crushing strength.

Abstract: A through tubing bridge plug (200) for providing a gripping and sealing engagement with a casing string of a wellbore. The bridge plug (200) includes an actuation rod (208), an anchor assembly (212), a pair of compression assemblies, each including a support assembly (216, 242) and an anti extrusion assembly (220, 238) and a packing assembly (224) disposed about the actuation rod (208) between the compression assemblies. Responsive to longitudinal movement of the actuation rod (208), the anchor assembly (212) establishes the gripping engagement with the casing string, the compression assemblies are radially deployed such that the anti extrusion assemblies (220, 238) are supported by the support assemblies (216, 242) and the packing assembly (224) establishes the sealing engagement with the casing string.

Abstract: The invention provides geopolymeric compositions, which have controllable thickening and setting times for a wide range of temperatures and a large range of geopolymer slurry densities. The geopolymer slurry compositions have good mixability and pumpability, whilst the set materials develop good compressive strength and permeability. The invention discloses a method for preparing geopolymer for oilfield cementing applications. The geopolymeric compositions according to the invention comprises a suspension made of an aluminosilicate source, a carrier fluid, an activator taken from the list constituted by: a metal silicate, a metal aluminate, an alkali activator, or a combination thereof, and an aluminum containing compound taken in the list constituted of bauxite, aluminum oxide and aluminum salt and the suspension is a pumpable composition in oilfield industry and the suspension is able to set under well downhole conditions.

Abstract: Sliding sleeve mechanisms including protective sheaths for debris protection are disclosed. Protective sheaths can be formed from materials such as composites, metal, foil, rubber, plastic, glass, ceramic, wire mesh, tape, etc. The protective sheaths can be substantially cylindrical shells (having one or more pieces), plugs in the flow ports, and/or tape or wire wrappings. The protective sheaths can be retained by recesses in the sliding sleeve or mechanical fasteners such as screws, pins, rivets, snap rings, bands, and buckles. The protective sheath can be outside or inside the sliding sleeve. The protective sheath can protect the sliding sleeve from debris by retaining grease that has been packed into the sliding sleeve for that purpose or positively preventing entry of debris into the sliding sleeve. The protective sheath can be cleared by permitting fluid flow through the sliding sleeve, which can act to destroy and/or wash away the protective sheath.

Abstract: A device for fixing a valve (1) to a tubular member (2) being situated in wellbore formed in a subterranean reservoir and is having at least one drainage section (11) including a plurality of such valves as to allow the flow of fluid into and out from the tubular member, respectively. According to the present invention the valve (2) is secured to the tubular member (1) by means of a sleeve portion (3), the sleeve portion being part of the valve or is formed like a separate sleeve (4) into which the valve is to be arranged.

Abstract: A top termination (70, FIG. 2) lies at the top of a riser (22A) that extends vertically from the sea floor into a moon pool of a floating unit, or vessel (12) that is drilling or servicing a well, wherein the riser transfers fluids such as used drilling fluids up to the vessel. The vessel can move vertically in heave as well as tilt without requiring the top termination to follow such motions. The top termination carries fluid to the vessel through jumper hoses (74) that bend to take up vessel vertical motion and tilt. The weight of the top termination is carried by the vessel through flexible lines (44A) that extend from near the top termination up to the vessel.

Abstract: The invention relates to a riser pipe section (1) comprising a main tube (2), at least one auxiliary line element (3) arranged substantially parallel to said tube (2), the ends of the main tube comprising connection means allowing longitudinal stresses to be transmitted and the ends of the auxiliary line element comprising linking means allowing longitudinal stresses to be transmitted, said linking means comprising at least one locking pin (14).

Abstract: An electric pumping system having an electric submersible pump located downhole in a well, the electric submersible pump comprising a motor part, a pump part, and a protector part; the motor part has an internal motor volume containing motor oil; the motor part connected to an electric power source at surface; a motor oil container located at surface outside of the well; a conduit fluidly connecting the motor oil container with the internal motor volume containing motor oil.

Abstract: The invention relates to a slim hole production system for pumping liquids to the surface of a hydrocarbon well and especially a hydrocarbon well that is producing both natural gas and liquid liquids where the diameter of the hole in the production area is too small to get production tubing and a sucker rod into a productive arrangement. The slim hole pump includes a hollow tube that raises and lowers the plunger and carries the liquids to the surface and uses the annulus to produce the gas.

Abstract: The invention relates to an arrangement for positively pumping liquids to the surface of a hydrocarbon well where the hydrocarbon well has bee previously completed with a permanent packer and tailpipe. A rod pump having a plunger connected to a hollow rod string can positively pump the liquids collecting at the bottom of the well while the natural gas is produced up the annulus between the production tubing and the hollow rod string. In this invention, the tail pipe is perforated above the rod pump and below the packer to all the natural gas into the production tubing.

Abstract: The invention relates to a double string pump for pumping liquids to the surface of a hydrocarbon well and especially a hydrocarbon well that is producing both natural gas and liquid fluids. The double string pump includes a hollow tube that raises and lowers the plunger and carries the liquids to the surface and an outer tube receives liquids down into the well to lubricate the moving parts and flush particles from areas prone to wear and back toward the production tube. The natural gas is produced through the annulus between wellbore casing and the outer production tubing string.

Abstract: A tubular actuator includes, a restrictor disposed at a tubular that is engageably receptive to a runnable member run thereagainst as long as pressure remains above a latch pressure, the restrictor configured to allow passage of the runnable member after a delay at pressure equal to or below the latch pressure.

Abstract: A tubular actuator includes, a tubular, a support member disposed at the tubular, and a restrictor configured to pass a runnable member when unsupported by the support member and to prevent passage of the runnable member when supported by the support member. The restrictor is movable relative to the support member from an unsupported position to a supported position in response to pressure applied against the runnable member engaged with the restrictor according to a pressure versus time profile.

Abstract: An elongated plunger arrangement for moving up and down in a tubing string and a plunger lift system for an oil well and a gas well, the plunger having an upper portion, an intermediate portion and a lower portion, all of the portions having an elongated longitudinally directed bore or cavity therewithin, the plunger also having a direction accelerating arrangement therewithin, the direction accelerating arrangement comprising an elongated acceleration inducing valve containing shift rod extending through the elongated bore, wherein the shift rod is longer than the elongated plunger.

Abstract: A line retention arrangement including one or more supports; and two or more clips, each clip having a base and a cantilever portion the two or more clips being oriented oppositely to one another, each clip mounted to the one or more supports. A method for retaining one or more lines at a string.

Abstract: A hydraulic coupler for providing fluid communication between adjacent members that includes a two way check valve formed from a double headed poppet set in a hollow cylinder with corrugated bellows like walls. Contoured bores are provided in the cylinder ends and the poppet heads are profiled to match the contour of the bores. When the heads are seated in the bores they form a sealing surface to block fluid from flowing through the coupler. Compressively preloading the cylinder before assembly provides a sealing force between the heads and the bores. Axially compressing the cylinder with respect to the poppet unseats the heads from the bores to form a flow path through the coupler.

Abstract: A downhole oilwell toolstring having an adapter having a male threaded portion, a longitudinally extending tubular female housing having a female threaded portion on an inner surface of the housing, a first end located proximate to the female threaded portion, a second end located distal to the female threaded portion, and a recessed groove extending around the circumference of the interior surface of the female housing at a location between the first end the female threaded portion. The adapter has a first end that is distal from the threaded portion and a second end that is proximate to the threaded portion, and a recessed groove extending around the outer circumference of the adapter at a location between the threaded portion and the first end of the adapter. The female housing is connected with the male adapter by way of the female threaded portion and the male threaded portion engaging one another. A ring is located in the recessed groove in the adapter and the recessed groove in the female housing.

Abstract: An anchor assembly (400) for anchoring a downhole tool in a wellbore tubular. The anchor assembly (400) includes a plurality of slip arm assemblies each having first and second arms (412, 414) hingeably coupled together. The first and second arms (412, 414) each have teeth (418, 426) on one end. A first sleeve (402) is rotatably associated with each of the first arms (412) and a second sleeve (404) is rotatably associated with each of the second arms (414) such that the anchor assembly (400) has a running configuration in which the slip arm assemblies are substantially longitudinally oriented and an operating configuration in which the first and second arms (412, 414) of each slip arm assembly form an acute angle relative to one another such that the teeth (418, 426) of the first and second arms (412, 414) define the radially outermost portion of the anchor assembly (100).

Abstract: A two-component mortar composition contains a curable resin component (A), and a curing agent component (B), which is separated therefrom to inhibit reaction and contains, in the resin component (A), a reactive diluent mixture, which comprises at least one hydroxyalkyl di(meth)acrylate, at least one alkyl (meth)acrylate and at least one acetoacetato compound of the general formula (I). A method of fastening an anchoring element in boreholes in mineral substrates includes filling a borehole with the inventive two-component mortar composition, inserting an anchoring element in the borehole immediately after filling the borehole with the mortar composition; with the anchoring element being set after a predetermined time period necessary for the chemical reaction of the resin component (A) with a curing agent components (B).

Abstract: An actuation assembly (100, 300) for actuating a downhole tool (200) having a tool housing (202) and an actuation member (208). The actuation assembly (100, 300) includes a downhole power unit (100) and a stroke extender (300). A power unit housing (150) is operably associated with an extender housing (302). A moveable shaft (130) of the power unit (100) is operably associated with an extender mandrel (304). The extender housing (302) is operably associated with the tool housing (202) and the actuation member (208). The extender mandrel (304) is operably associated with the actuation member (208) such that oscillatory movement of the moveable shaft (130) relative to the power unit housing (150) causes oscillatory movement of the extender mandrel (304) relative to the extender housing (302) which causes progressive movement in one direction of the actuation member (208) relative to the tool housing (202), thereby actuating the downhole tool (200).

Abstract: A compression assembly (500) for actuating packing elements of a through tubing bridge plug in a casing string of a wellbore. The compression assembly (500) includes a support assembly (502) and an anti extrusion assembly (504). The support assembly (502) has a running configuration in which link arm assemblies are substantially longitudinally oriented and an operating configuration in which short arms (514) are pivoted relative to long arms (520) of link arm assemblies such that the short arms (514) form a support platform. The anti extrusion assembly (504) is operably associated with the support assembly (502). The anti extrusion assembly (504) has a running configuration in which petals (536) are substantially perpendicular to a base member (534) and nested relative to one another and an operating configuration in which the petals (536) are radially outwardly disposed substantially filling gaps between the short arms (514).

Abstract: Expandable apparatus for use in subterranean boreholes include a tubular body having at least one opening and at least one member positioned within the at least one opening. The member is configured to move between a retracted position and an extended position. A sleeve member including a constricted portion may be disposed in the tubular body and may selectively retain the at least one member in the retracted position. In some embodiments, the sleeve member may be biased in an initial position. Methods of moving a member of an expandable apparatus include repeating retracting and expanding of the member. Methods of triggering an expandable apparatus include forming a constriction in a fluid flow path extending through a sleeve member to move the sleeve member in a downhole direction responsive to fluid flow.

Abstract: The present invention relates to the use of ionic liquids as flame retardants. The compounds of the invention may be used as flame retardants in various materials without causing damage to the environment and or health of humans or animals. Ionic liquid flame retardants maybe applied alone or in combination with traditional flame retardants. Ionic liquid flame retardants can be applied to finish textile, plastic, leather, paper, rubber or as wild fire flame retardants.

Abstract: A soil-conditioning disc and variable disc assembly system is presented wherein each disc has a series of radially extending geometrically shaped protrusions with intermittent cutting edges and consolidation surfaces, all circumscribing a central hub portion. The disc can be used individually or in multiplicity in a variety of configurations as appropriate for the soil conditions and soil-conditioning task at hand. When the soil-conditioning disc is rolled across the soil surface, a series of consolidated perforations and/or geometric-shaped hollows and restricting channels (depending on the particular disc configuration utilized) are created in the soil. This soil-conditioning disc and assembly simultaneously cuts and incorporates organic material into the soil to increase soil oxygenation for improved soil health, to create depressional water storage, to enhance soil permeability, to reduce evaporation, and to improve surface water distribution by reducing runoff.

Abstract: A conservation tillage implement having three or more rows of individual coulter wheel assemblies laterally spaced apart and removably mounted on a cultivator frame, a coulter wheel assembly in a given row being staggered with respect to the coulter wheel assemblies in a longitudinally adjacent row. The coulter wheel assemblies may be laterally adjustable and may be mounted to the cultivator frame using a mounting means that permits rotation about a vertical axis. The coulter wheel assemblies may have a coil spring with a horizontal spring axis to permit upward deflection in response to impact with an obstacle. Leveling attachments may optionally be mounted to the cultivator frame, along with additional field working tools. The implement is used in the management of crop residue as part of a minimum tillage strategy. The implement is particularly resistant to plugging and can be operated at high speeds without undue damage upon impact with obstacles.

Abstract: According to an aspect of the present invention, there is provided a rotary striking tool includes: a motor; an oil pulse unit that is driven by the motor; an output shaft that is coupled to the oil pulse unit so that a tip tool can be attached to the output shaft; a first detection unit that detects a rotation angle of the motor and outputs a first output signal; a second detection unit that detects an impact generated at the oil pulse unit and outputs a second output signal; and a control unit that controls a rotation of the motor, wherein the control unit uses a portion of the second output signal based on the first output signal for control of the rotation of the motor.

Abstract: A power tool includes a tool unit having an electric motor for driving a tool bit, and a first base and a second base each capable of being assembled with the tool unit. The tool unit and the first base can be assembled into a first tool. The tool unit and the second base can be assembled into a second tool that is different from the first tool.

Abstract: A screw driving machine includes a bit that is movable to strike a screw against a workpiece and rotatable to rotate the screw to the workpiece, a combustion-type power mechanism including a spark plug that ignites combustible gas filled in a combustion chamber to apply striking force to cause the bit to strike the screw, a motor that generates a rotative force when supplied with electric force, and a power transmission mechanism that transmits the rotative force generated at the motor to the bit to cause the bit to rotate.

Abstract: A clutch arrangement for use in a power tool having a multi-speed transmission assembly. The clutch arrangement includes a clutch member and a follower member. The clutch member is coupled to a member of the transmission assembly that is proximate the torsional input of the transmission assembly and which must be in a non-rotating position to permit the transmission assembly to perform a torque multiplication operation. The follower member is biased into engagement with the clutch member to inhibit relative rotation therebetween. As the clutch member and the transmission member are coupled to one another, the transmission assembly is able to perform a torque multiplication operation. When, however, the torsion that is exerted onto the clutch member is sufficient to overcome the frictional engagement between the follower and clutch members, the clutch member, and the transmission member, rotate, thereby inhibiting the capability of the transmission to continue to perform the torque multiplication operation.

Abstract: It is an object of the invention to reduce transmission of an external force caused by run-out of a tool bit to a tool body in a power tool is provided. A representative power tool which performs a predetermined operation by linear motion of a tool bit in its axial direction has a tool body, a tool holder that holds the tool bit in its front end region and extends in the axial direction of the tool bit, and an elastic element. A rear region of the tool holder opposite from the front end region extends into the tool body, and in the extending region, the tool holder is coupled to the tool body such that the tool holder can rotate about a pivot on a z-axis defined by an axis of the tool bit, in directions of y- and x-axes which intersect with the z-axis. The elastic element applies a biasing force to the tool holder in such a manner as to hold the tool holder in a predetermined position or an initial position with respect to the tool body.

Abstract: The invention is based on a hammer drill and/or chisel hammer, having an impact mechanism unit, an impact mechanism housing and at least one damping unit. The invention proposes that the damping unit is arranged on the impact mechanism housing along a main extension direction of the impact mechanism unit.

Abstract: An electric power tool includes a body part for outputting a rotational force at one end thereof, a grip part provided to extend from the body part in an intersecting relationship with the body part, and a suspension link provided at the other end of the body part for hanging the body part. The suspension link is configured to ensure that, if the body part is suspended from the suspension link using the suspension link as a pivot point, the electric power tool is kept by a weight balance in a horizontal posture in which the extension direction of the grip part is substantially orthogonal to the vertical direction or an inclined horizontal posture in which the joint portion of the body part and the grip part is positioned at the upper side.

Abstract: A power tool for tightening screw joints includes a rotation motor and a device for initiating a braking torque to the motor when, in operation, a predetermined tightening condition has been reached. A release coupling includes a first coupling part which is supported by a support shaft being rotationally connected to the motor and a second coupling part which is rotationally connected to an output shaft. The first coupling part is displaceable from a first position to a second position or positions where it is out of engagement with the second coupling part and torque transmission to the output shaft is interrupted. Applying a braking torque to the motor causes the first coupling part to be displaced from the first position to the second position or positions.

Abstract: The invention relates to a device for driving instruments and tools comprising a housing (12) for mounting a motor (18), a power supply device (20) associated with the motor (18), and a conical drive element (22) partially protruding out of the housing (12) and associated with the motor (18) and interacting with the instruments or tools, and a switching device (16) disposed on the outside (14) of the housing (12) for switching on and off the motor (18), the switching device (16) comprising an actuating element (26) extending at least partially around the circumference of the housing (12) and being designed to be rotatable relative to the housing (12), and the use thereof.

Abstract: An electric power tool includes a housing, a motor arranged within the housing, a power transmission unit arranged within the housing for transferring rotation of the motor to a work tool, a motor control unit arranged within the housing for controlling the rotation of the motor, and a trigger switch retractably provided to the housing for instructing the motor control unit to control the rotation of the motor. The electric power tool further includes a wireless communication device arranged within the housing for wirelessly communicating the work information on the content of works. The wireless communication device includes an antenna unit. The wireless communication device is covered with a shock-absorbing material. The antenna unit is arranged to lie higher than the trigger switch when the electric power tool is stored in a specified storage state.

Abstract: A composition for forming a gasket comprises a curable elastomer material and 0.1-20 weight % (e.g., 4-10 weight %) carbon nanotubes dispersed throughout the elastomer material. A dispensed bead of elastomer material exhibits a Slump ratio of at least 0.7. The composition provides the correct balance of rheology/dispensing characteristics, seal characteristics, and contamination profile characteristics required in form-in-place gasket applications, while simultaneously providing a conductive form-in-place gasket.