Abstract: A vehicle door locking system includes: a sensor device that is mounted in a door handle or a vehicle door of a vehicle, detects presence or absence of an object approaching or being in contact with the sensor device, and outputs a signal for locking or unlocking the vehicle door; and a sensor controller that controls the sensor device, wherein the sensor controller changes a control state of the sensor device or changes a processing state of the signal output from the sensor device on the basis of new information which includes at least one of information output from the sensor device and information output from a device other than the sensor device.

Abstract: A sash window fastener includes: a latch assembly; a sash lock assembly mounted upon the meeting rail; and a stop member mounted to the master window frame. The lock assembly includes a pivotable cam to engage a keeper on the master frame to lock the window, and a pivotable follower arm. The arm interconnects with the latch assembly within the meeting rail, so cam rotation that drives arm rotation also causes translation of the latch. The cam may occupy: an extended position to secure the cam to the keeper, with the latch engaging the master frame to prevent tilting, and being positioned below a protrusion on the stop member to redundantly lock the window; a first retracted cam position permitting sliding of the window; and a second retracted position permitting tilting of the sash window. Additional protrusions may be used on the stop member to serve as vent stop positions.

Abstract: A door hinge has a first hinge part, a hinge bracket connected to the first hinge part to be pivotable about a rotational axis and a second hinge part connected to the hinge bracket The hinge bracket has an angled mounting section that is forcibly guided on a receiving block a first direction x and is lockable in place. The receiving block is adjustable in a second direction y in the second hinge part 4.

Abstract: A door or window hinge has a housing having a back wall facing in a predetermined direction and a side wall extending in the direction from the back wall. A rack fixed to the side wall and extending in the direction meshes with a sector gear fixed to an inner end of a hinge body and formed as a partial ellipse having a semimajor axis. The inner body end can rotate in the housing about an axis perpendicular to the direction and slides in the guide in the direction between a closed position with a stop face of the inner end bearing on the back wall and an open position with the inner end spaced in the direction from the back wall. The sector gear is oriented on the inner end such that in the closed position the semimajor axis extends substantially perpendicular to the direction.

Abstract: A hinge apparatus that includes a stationary hinge portion, which includes a first bracket configured to be attached to a fixed surface, a first arm extending from the first bracket, and a second arm extending from the first bracket. The first and second brackets include axial holes with a hinge pin arranged therethrough. The hinge pin defines a rotation axis. The stationary hinge portion also includes a stop plate extending away from the first bracket and connected to the first arm. The hinge apparatus also includes a rotatable hinge portion, which includes a body arranged around the hinge pin between the first and second arms and a stop body extending from the body along the rotation axis. Ends of the stop body contact the stop plate to limit rotation of the body about the rotation axis. A second bracket configured to be attached to a movable body.

Abstract: An adjustable sliding door system for building a sliding door for use in delimiting a part of a room in an opening and extending from the floor to the ceiling of the room is adapted to run in a track positioned opposite it on, respectively, the ceiling and the floor of the room. The adjustable sliding door system has two profiles constituting the sides of said sliding door and surface elements mounted between the profiles and constituting the surface of the sliding door. The adjustable sliding door system has a plurality of surface elements adapted to be mounted overlapping and in continuation of each other in a length corresponding to the height of the opening. This embodiment has the advantage that, based on few standard elements, a very flexible solution is obtained for building a sliding door of any height and where colors/decors may be varied according to personal desires.

Abstract: A damping device is applicable to a hinge. The damping device includes a housing, a damper, an abutting member and an adjusting member. The damper is arranged on the housing. The damper includes a first movable member and a second movable member movable relative to each other. The abutting member is configured to abut against the second movable member of the damper. The adjusting member is movable relative to the housing. When the adjusting member is moved to a first position relative to the housing, the adjusting member abuts against the first movable member of the damper. When the adjusting member is moved to a second position relative to the housing, the adjusting member does not abut against the first movable member of the damper.

Abstract: A damping device is applicable to a hinge. The damping device includes a damper and a blocking member. The damper includes a first movable member and a second movable member movable relative to each other. The first movable member has a first abutting part and a second abutting part. The first abutting part and the second abutting part are located at different longitudinal positions on the first movable member. The blocking member is movable relative to the damper and configured to abut against one of the first abutting part and the second abutting part of the first movable member.

Abstract: A device for opening and closing an outwardly opening pivoting wing, comprising: an actuating device including a support, a crank rotatable relative to the support and a control mechanism operated by the crank, and an arm having a toothed portion which cooperates with said control mechanism, wherein the control mechanism cooperates with the toothed portion of the arm for the translational motion of the arm along a rectilinear direction between a locked wing position and an unlocked wing position, and vice versa, a first and a second slider intended to engage a groove of the wing in a movable manner in a rectilinear direction, wherein the first slider is articulated at a distal end of the arm and wherein the second slider is connected to a locking device.

Abstract: A door assembly includes a first door skin and a second door skin spaced apart from the first door skin. The assembly also includes an energy sensor generating an energy signature signal and a memory storing a door component operating signature. A controller is coupled to the accelerometer and forms a comparison of the energy signature signal to the door component operating signature and generates a door component operation status signal in response to the comparison.

Abstract: The invention relates to a method for opening a movable panel of a motor vehicle, comprising the following steps of: —projection of at least one light spot (102) with which an authorized user (U) has to interact, —determining if there is an intention to open the panel (100), and if so —authorizing the opening of the panel (100). The step of determining if there is an intention to open the panel (100) comprises: —acquiring a measurement signal of a movement performed by the user (U), —filtering the signal, —identifying if the movement performed by the user (U) is in a predefined correct order with at least the following steps: moving the user's part towards the light spot (102), keeping it in the light spot (102) and moving it outside the light spot (102), and —determining if the movement performed by the user (U) meets a predefined specific time condition.

Abstract: A method for opening a vehicle door may include capturing a first image when a first condition is met and capturing a second image when a second condition is met. The first condition is one of the vehicle is parked, or the door is locked. The second condition is one of the vehicle is deactivated, or the door is unlocked. The method may further include detecting an object outside based on the first and second images, determining whether the detected object is within a projected path of the door moving from a first position to a second position, and controlling operation of an actuator configured to move the door, such that if the detected object is determined to be within the projected path of the door, the actuator does not move the door according to the projected path.

Abstract: Disclosed is quick-release removable cladding for interior fenestration frames, such as the interior frames of doors, window, skylights, or curtain walls. The cladding is held flush against the frame by a pair of brackets or alternatively by a bracket attached to frame and a shaped cavity within the cladding. In one aspect, the pair of brackets can be shaped and arranged so that when engaged, a downward force on the cladding causes the cladding to move flush against the frame. In another aspect, the cladding can be held securely in place to the frame by a keeper bar. The keeper bar can be configured to prevent upward movement of the cladding against the frame.

Abstract: The invention relates to fixed glazing for a building, comprising at least one glass pane, for example triple glazing. According to the invention, the glass pane is directly inserted in the adjacent building structure without interposing a frame that consists of a rigid material, and/or it is inserted in the laterally adjacent insulation of the building structure.

Abstract: An insulating glazing unit having a first pane, a second pane, a third pane arranged between the first pane and the second pane, an outer pane interspace, an inner pane interspace, and a spacer is described. The spacer having a plastic profile with a first glazing interior surface and a second glazing interior surface, a first pane contact surface, a second pane contact surface, a primary sealing means, and a main member containing a sealing material and a drying material. The plastic profile includes a groove, into which the third pane is inserted and which runs parallel to the first pane contact surface and to the second pane contact surface. The plastic profile separates the outer pane interspace from the inner pane interspace. The main member is arranged in the outer pane interspace between the plastic profile and the primary sealing means, the main member being adjacent the plastic profile and the primary sealing means.

Abstract: The invention provides a smart window. The smart window comprises at least one composite layer comprising: a first soft resin sheet, a first transparent conductive layer, a second soft resin sheet, a second transparent conductive layer and a first PDLC layer. The first and second transparent conductive layers are etched to form circuit regions with different patterns, and first leads and second leads on the circuit regions are electrically connected with an external electrically driving device. The first PDLC layer is driven to present different patterns by an electric field controlled by a signal instruction of the external electrically driving device.

Abstract: The present invention relates to shaker doors with solid cores and methods for making the same. The shaker doors contain different core materials at the recessed panel than the raise peripheral region to provide dimensional stability and reduced distortion when the doors are exposed to high humidity. The devices and methods also provide for easy assembly of solid core shaker doors, including fire rated doors.

Abstract: A rainwater guide device is coupled to an outer side of the rail portion to be adjacent to the rainwater drainage hole, wherein the rainwater guide device includes a rainwater receiving portion defined at one closed side end thereof to receive the rainwater from the drainage hole and having an open top, and a rainwater outlet defined at the other open side end thereof, wherein the bottom plate includes a tilted plate tilted downwards from the rainwater receiving portion to the rainwater outlet in a longitudinal direction thereof, and two rainwater guide plates, each guide plate having a first side coupled to the tilted plate and a second side coupled to a corresponding longitudinal side plate, wherein each of the rainwater guide plates is tilted downwardly from the second side to the first side.

Abstract: The invention relates to a sealing device (11, 35, 41) for sealing a gap (32) between a lintel (30) and a roller shutter (10, 34, 40). The sealing device (11, 35, 41) has a sealing means (23) for arranging at the upper end of a top shutter element (24) of the roller shutter (10, 34, 40). For covering a gap (32) in a functional and/or cost-effective way between a lintel (30) and a roller shutter (10, 34, 40), preferably in case of a completely unrolled door blade (12), the sealing device (11, 35, 41) is characterized in that a swivel mechanism (25, 37, 43) is provided for swivelling the sealing means (23) from a sealing position into a winding position and from a winding position into a sealing position.

Abstract: The present invention relates to a fabric sheet forming a loop and the fabric sheet is configured to include: a loop fabric sheet 10; a dual fabric sheet 20 positioned on a rear surface of the loop fabric sheet 10; connection bands 30 formed on each of the top and the bottom of the loop fabric sheet 10 and the dual fabric sheet 20 in the longitudinal direction of a weft; and an interval control cord 50 of which one end is fixed to the bottom of the dual fabric sheet 20, a part is positioned in the dual fabric sheet 20, and the residual part is positioned outside the dual fabric sheet 20. As a result, even when the fabric sheet in which the loop is formed by using only fabrics is unfolded, the loop can be formed to form a regular loop and increase efficiency of production.

Abstract: A ladder assembly for accommodating a variety of spaces is provided. The ladder assembly comprises a first rail having a top end and a bottom end and a second rail having a top end and a bottom end. The second rail is spaced from the first rail. A plurality of spaced rungs are mounted between the first rail and the second rail with each rung having a first rung portion and a second rung portion. Each first rung portion is slidably receivable within the corresponding second rung portion allowing the first rail and the second rail to be moved in a general direction toward and away from each other and a distance between the first rail and the second rail to be adjusted to accommodate the desired space.

Abstract: The present disclosure provides a pool ladder with an active protection mechanism. The ladder provides a switch positioned at a significant height from the ground such that children cannot easily reach the switch. When actuated, the switch unlocks a protective door for the ladder and the ladder can be moved to access the steps. As such, the ladder can effectively prevent children from unlocking the protective door and accessing the pool.

Abstract: A can caddie for securing a platform to either of two different hollow rung sizes is provided. The can caddie provides a collar portion coupled between a shaft and a platform portion. The shaft has a stirrup shape dimensioned and adapted to snugly fit in the hollow rung of a smaller home use ladder, preventing rotation therein. The collar portion is dimensioned and adapted to snugly fit a larger hollow rung of a commercial ladder, preventing rotation therein. Also, the collar portion may be adapted so as to prevent pivoting of the shaft within the smaller hollow rung by engaging the opening thereof. The platform portion includes a can opening and a plurality of can notches to receive a paint can and its handle, respectively, so as to be secured by gravity. The platform portion is also designed to retain tools and other items.

Abstract: A ladder stabilization apparatus features a ladder engagement unit, and first and second bracing members attached to the engagement unit at a side thereof that faces outwardly from the ladder and each having a respective contact side for abutting against a structure during. The bracing members are securable to the ladder engagement unit in a first position in which the contact sides diverge away from the ladder, and a second position in which the contact sides converge away from the ladder. Placement of the braces in the first position accommodates diverging walls of an outside corner of the structure, while placement of the braces in the second orientation accommodates converging walls of an inside corner of the structure against the contact sides of the bracing members. A slot between the bracing members in the second position accommodates a wall stud or other dimensional frame unit.

Abstract: A down the hole hammer (10) incorporates: an inner tube assembly (100); a fluid flow control system (200); a bit retaining system (400); a porting sleeve (600); and a piston (700). Each of the: inner tube assembly (100); fluid flow control system (200); bit retaining system (400); porting sleeve (600); and piston (700) in their own right provide benefit to the overall operation and/or reliability of the hammer (10).

Abstract: A under reamer that has two arms and is piston activated. The under reamer arms are supported on both side walls by a pin assembly. The under reamer arms are extended outward by a piston assembly which is spring biased to retract the arms. A surface of the under reamer arms adjacent the pivot point is protected via a holder assembly with a surface that matches the surface of the arms adjacent the pivot assembly.

Abstract: A dual tower rig includes a hull supported by one or more legs and includes a cantilever assembly coupled to the hull. Dual towers are supported by a skidding system that is coupled to the cantilever assembly. The towers are configured to conduct independent operations and are movable relative to each other and to the hull by the skidding system and the cantilever assembly.

Abstract: Coring tools configured to procure core samples of earth formations may include a coring bit comprising a cutting structure configured to cut a core sample and an outer barrel connected to the coring bit. The outer barrel may be configured to apply axial and rotational force to the coring bit. An inner barrel may be located within the outer barrel and may be configured to receive a core sample within the inner barrel. A sponge material may line an inner surface of the inner barrel and may be configured to absorb a fluid from the core sample. A stabilizer may be connected to the outer barrel. A distance between the stabilizer and an upper extent of the coring bit may be less than 30 feet.

Abstract: A slickline for use in a wellbore comprising: the slickline, wherein the slickline: comprises a composite material comprising a plurality of carbon fiber strands, and is housed on the inside of a receptacle, wherein the receptacle is hollow and cone-shaped. The slickline can also be made from an anisotropic material; and wherein a first test section of the slickline has a stiffness greater than a second test section having the same dimensions as the first test section but made of steel. A method of deploying the slickline into a wellbore comprising: positioning a portion of the slickline into a controlled deployment device, wherein the controlled deployment device comprises a housing; and causing at least a portion of the slickline to enter the wellbore, wherein the slickline moves from the receptacle through the housing and into the wellbore during the step of causing.

Abstract: The invention relates to a drilling vessel comprising a drilling tower and a tubular string support structure for supporting a tubular string in the firing line of the drilling tower. The tubular string support structure has two parallel rails and two carts supported by those rails. Both carts have a hanger body with a central passage for supporting a tubular, and each cart can be moved between a central support position for supporting a tubular in the firing line, and a secondary position adjacent the central support position. When both carts are located in their secondary position, the carts are located on opposite sides of the firing line, such that between the carts there is a passage for passing through large objects along the firing line.

Abstract: A security device placed at a wellhead over a blowout preventer valve, which can be activated to catch a cable and/or a string of pipes upon a cut event or accident, preventing the fall of the same into the well, which includes: an upper horizontal plate and lower horizontal plate, vertically aligned, each having a circular central orifice for the passing of a string of pipes and/or a cable, and a cutout on the front part thereof, located between its front edge and the circular orifice; lateral support device, located between the upper and lower plates, that connect the plates together, delimiting an aperture at the front part of the device that together with the cutouts on the upper and lower plates form a front passage toward the inside of the device; at least two clamps driven by corresponding hydraulic cylinders, which are arranged at an acute angle with the vertical axis of the device; and a movable vertical plate arranged on the front part of the device between the lateral support means, pivotally conne

Abstract: The present disclosure provides a casing windowing method and tool using coiled tubing; the windowing method comprises the steps of: a) preparing a borehole, including drifting a casing, and scraping an inner wall of the casing; b) hanging a positioning assembly in the casing, including seating the positioning assembly at a wellhead of the borehole, and after the positioning assembly is put down to a predetermined position in the casing, hanging a hanger of the positioning assembly at the inner wall of the casing; c) fixing a whipstock at a down-hole of the borehole, including seating the whipstock at the wellhead, and inserting a guiding assembly of the whipstock into the hanger so that an orientation of a window inclined plane of the guiding assembly meets a requirement of window orientation; and d) windowing the casing, including seating a tapered windowing mill at the wellhead, and after the tapered windowing mill is put down to the window inclined plane of the guiding assembly, starting the tapered windo

Abstract: The invention relates to underwater drilling for procuring and analyzing ground samples of a bed of a body of water. An underwater drilling device placed onto a bed of the body of water. By a drill drive a drill rod composed of at least one tubular drill rod element is drilled into the bed of the body of water in a first drilling step, wherein a drill core is received in a receiving part in the tubular drill rod element. The receiving part with the drill core is deposited in a storage place of a storage area on the base frame. Subsequently, one further drilling step is carried out with a further drill rod element. By means of sensor means at least one physical and/or chemical property of the drill core is determined. data on the storage place of the drill core in the second storage area.

Abstract: Disclosed is a mechanical force generator for use in a drillstring that provides a sinusoidal or near sinusoidal oscillating output, comprising: a rotatable cam plate connected to a mass, the cam plate having two opposed oblique bearing surfaces rotatable through a bearing, wherein upon rotation, the two opposed oblique bearing surfaces cam against the bearing to oscillate the mass longitudinally, wherein the bearing comprises opposing bearings for bearing against the opposed oblique bearing surfaces and wherein at least one bearing adjusts to follow the respective opposed bearing surface and maintain engagement.

Abstract: A system includes a hanger locking assembly configured to lock a hanger within a housing of a wellhead. The hanger locking assembly includes an energizing ring having one or more axially-extending passageways configured to receive and to support one or more control lines. An anti-rotation element extends between the energizing ring and the hanger to block rotational movement of the energizing ring relative to the hanger. A locking ring is in contact with the energizing ring, and axial movement of the energizing ring relative to the hanger drives the locking ring radially to engaged position in which the locking ring extends into a corresponding recess of the housing of the wellhead to block axial movement of the hanger relative to the wellhead.

Abstract: Various wellhead assemblies are provided. In one embodiment, the wellhead assemble includes a seal assembly that seals against an inner surface of a wellhead hanger and against an inner surface of a wellhead body. The wellhead hanger can be sized such that the upper portion of the hanger has an outer surface that abuts an inner surface of the wellhead.

Abstract: A landing string includes a valve having a valve member mounted within a flow path extending through the landing string, and a valve control system for use in operating the valve to move the valve member between open and closed positions to control flow along the flow path. The valve control system is reconfigurable between a first configuration in which the valve is operated or controlled under a fail-as-is (FAI) mode of operation, and a second configuration in which the valve is operated or controlled under a fail-close (FC) mode of operation.

Abstract: An artificial lift system is provided for use for pumping fluid from a downhole wellbore to surface. The system comprises a progressive cavity pump, said progressive cavity pump comprising a stator run on a tubing string and a rotor run on a rod string into the stator and a shuttle valve positioned upstream of the progressive cavity pump, wherein said shuttle valve comprises a non-weighted shuttle and wherein said non-weighted shuttle is moveable axially within said shuttle valve from force of fluid alone. An upstream shuttle valve is further provided for use upstream of a progressive cavity pump, wherein said shuttle valve comprises a non-weighted shuttle that is moveable axially within said shuttle valve from a force of fluid alone, to open and close the shuttle valve. A method is further still provided for pumping fluid from a wellbore in an artificial lifts system.

Abstract: A downhole flow control apparatus comprising: at least one tubular body locatable at a zone of a well, the tubular body having a longitudinal through bore and one or more transverse ports and a port covering device which, in use, is movable from a lower position in which the or each port is covered to an upper position in which the or each port is open; and at least one plugging device which is operable to travel downhole from the surface to locate within and seal the through bore of the tubular body, the plugging device including moving means to cause the port covering device to move from the lower position to the upper position thus allowing fluid communication between the through bore and the or each port.

Abstract: A downhole well conditioning tool for self-stimulating a well is provided. The down hole tool is a multi-stage stacked self-exciting tool that can alter a relatively steady flow of incoming fluid into pulsating fluid streams of rapidly cycling high and low pressure without the use of moving internal parts. The downhole tool can include a first stage operative to receive a steady flow of pressurized fluid though an inlet and discharge a pulsating fluid flow and a second stage connected to the first stage and operative to receive the pulsating fluid flow from the first stage and increase the pulsations of the fluid flow before the pulsating fluid flow is discharged out of the second stage.

Abstract: A drilling apparatus for drilling a lateral bore to main bore, comprises a casing in the main bore, having at least one window, at least one lateral tube, including a bit or other soil penetrator, the lateral tube which engages with an aperture in the casing, the outer diameter of lateral tube flush with aperture, such that the lateral tube is forced through the casing aperture into the formation when a sufficient pressure differential between the inside of the casing and the outside of the casing and a plurality of packers disposed at intervals along the outside of the casing, capable of sealing the annulus to the passage of fluids.

Abstract: Presented is a computerized method, apparatus, and systems for management of a slurry injection well and the associated surface facility. A network is provided for connectivity of facility equipment, sensor equipment, and control software operated on a computer system. The method utilizes real time and historical data of injection and slurry parameters in conjunction with computer simulations performed on a computer-modelled reservoir to predict well behavior during an injection event. The system determines optimized injection operation schedules and can recommend and implement changes to an injection operation while it is in process, including through automated equipment control.

Abstract: The subject matter of this specification can be embodied in, among other things, a wearable computer device positionable on a human body. The wearable computer device is configured to receive sensor information from a collection of sensors that includes a first sensor and a second sensor, the first sensor attached to the human wearable device and the second sensor connected to the human wearable device, the sensor information describing operational attributes of the oil and gas drilling or production operations that either implements a hydrocarbon recovery process or a hydrocarbon recovery machine at a time of obtaining the sensor information, identify baseline sensor information describing operational attributes during normal operation of either the hydrocarbon recovery process or the hydrocarbon recovery machine, compare the sensor information and the baseline sensor information, and provide a notification indicating an operational condition of the oil and gas drilling or production operation.

Abstract: A method for forming extended wormholes in a subsurface formation comprising locating producer wells, injection wells, and guard wells in a field; determining a flux rate for a formation-dissolving fluid such as an acid, the flux rate being dependent upon different variables including the composition of the rock matrix making up the subsurface formation and the type of acid selected; injecting a guard fluid into the subsurface formation, through at least one guard well to form designed pressure boundaries and injecting the acid into the formation at a rate to reach the determined flux rate and thereby forming an extended network of wormholes through the subsurface formation in a defined direction or plane, with or without guard wells.

Abstract: A sand screen for installation in a well includes a flow-through element having a center line running in the longitudinal direction of the flow-through element; and a filtration device. The flow element has an internal cavity extending over at least parts of a length of the flow-through element. The flow element further has a plurality of openings over the length thereof. The openings, via the filtration device, provide communication between an outer surface of the flow element and the internal cavity. The sand screen is flexible in a radial direction and in an axial direction.

Abstract: As assembly for a pressure-restrictor plate for a partially loaded perforating gun is provided. The assembly can include a charge tube positioned in a loaded-gun section of a partially loaded perforating gun. The assembly can also include a pressure-restrictor plate positioned in a blank-gun section of the partially loaded perforating gun and adjacent to the charge tube. The assembly can further include a rod for securing the pressure-restrictor plate in a position, the rod having a first end that is coupled to the pressure-restrictor plate and a second end that is coupled to an end plate positioned within the partially loaded perforating gun.

Abstract: A valve apparatus capable of withstanding high pressures and techniques for using this apparatus in various suitable applications are provided. The valve apparatus typically includes both an upper bellows comprising a standard, convoluted bellows and a lower bellows comprising an edge-welded bellows. The valve apparatus may also include a floating, constant volume fluid chamber that travels with the lower edge-welded bellows as the lower bellows compresses and expands in an effort to protect the lower bellows from very high internal volume fluid pressure.

Abstract: A method for thermal-displacement-type strengthened extraction in a drill hole, suitable for efficient gas extraction in a coal mine, the method comprising the following steps: arranging an extraction drill hole and a thermal displacement drill hole at intervals in a coal seam; continuously heating, by using a heat pipe (5), coal in the drill hole to form a stable temperature field; and significantly reducing gas adsorption potential by utilizing a heat effect, prompting gas desorption, and strengthening gas extraction. The method enlarges a range of effective pressure relief influence of a single hole, increases an extraction efficiency of gas in a coal seam by more than 40%, is safe, reliable and low-cost, and is easy to operate, and saves both time and labour.

Abstract: An apparatus that includes a housing, a flowline extending within the housing, and a member retained within the housing and substantially comprising thermally conductive material. The flowline is retained in a substantially cylindrical surface of the member. A heat-generating electrical component is mounted to the member.

Abstract: A method for estimating downhole speed and force variables at an arbitrary location of a moving drill string based on surface measurements of the same variables. The method includes a) using properties of said drill string to calculate transfer functions describing frequency-dependent amplitude and phase relations between cross combinations of said speed and force variables at the surface and downhole; b) selecting a base time period; c) measuring surface speed and force variables, conditioning the measured data by applying anti-aliasing and/or decimation filters, and storing the conditioned data, and d) calculating the downhole variables in the frequency domain by applying an integral transform, such as Fourier transform, of the surface variables, multiplying the results with said transfer functions, applying the inverse integral transform to sums of coherent terms and picking points in said base time periods to get time-delayed estimates of the dynamic speed and force variables.