Abstract: A device for handling a tubular member includes a gripping assembly configured to grip the tubular member. The gripping assembly includes a first arm and a second arm, which are configured to pivot between an open position and a closed position. The device also includes a first plurality of rollers coupled to the first arm and a second plurality of rollers coupled to the second arm. The first plurality of rollers and the second plurality of rollers are configured to grip the tubular member at different locations around a circumference of the tubular member when the first arm and the second arm are in the closed position, and the first plurality of rollers and the second plurality of rollers are configured to rotate the tubular member while the tubular member is being gripped by the gripping assembly.

Abstract: The invention provides a bit breaker comprising a plate that bounds a pipe slot. The bit breaker has two jaws that are at least generally parallel and that respectively define two working surfaces located on opposite sides of the pipe slot. The jaws are each mounted removably to the plate. In some embodiments, the invention is an assembly that further includes a pipe, tool section, tool or pipe joint received in the pipe slot. The pipe, tool section, tool or pipe joint has formed therein two crosswise grooves located on opposite sides of the pipe, tool section, tool or pipe joint. In some embodiments, the plate defines two fixed arms and a fixed base leg, with the two jaws mounted respectively against the two fixed arms. The bit breaker can have an adjustable arm such that the pipe slot can be surrounded about 360 degrees by the bit breaker.

Abstract: A drive unit includes a drive stem having first friction surfaces and a load coupling, wherein the load coupling is a threaded coupling. The drive unit also includes a transmission unit having second friction surfaces parallel to the first friction surfaces; and shoulders proximate a bottom of the transmission unit. The drive unit further includes a transmission selector movable to an “on” position or an “off” position, wherein the drive stem moves synchronously with the transmission unit when the transmission selector is in the “on” position.

Abstract: A torque absorber is described for absorbing a rotational torque that occurs when tubular elements are screwed together, the torque absorber comprising at least one cylinder and at least one piston movably arranged in the cylinder. The at least one cylinder is curved in the longitudinal direction of the cylinder and the at least one piston has a corresponding curved shape, such that the at least one piston can be moved into and out of the at least one cylinder. There is also described an apparatus comprising one or more torque absorbers for absorbing a rotational torque that occurs between two parts in the apparatus on the screwing together of tubular elements.

Abstract: A back-up wrench device of a top drive assembly of a drilling rig comprises a gripper device operable to grip an end of a drill pipe, and at least one fluid actuator operable to compensate for thread travel during makeup or breakout operations. The back-up wrench device can comprise a first housing coupled to the gripper device and a second housing coupled to a support structure of the top drive assembly, and can comprise a primary hydraulic housing movably coupled to the first and second housings. The at least one fluid actuator can include upper and lower fluid actuators each movable through upper and lower fluid chambers of the primary hydraulic housing during respective makeup and breakout operations to compensate for thread travel. Associated systems and methods for thread compensation with the back-up wrench are provided.

Abstract: Systems, apparatus and methods are described where a heater is arranged adjacent to a pipe make/break vise assembly to heat a female tool joint of two pipe sections connected by threads to facilitate breaking or disconnection of the joint. The heater can have any configuration or can be used in any manner to result in even heating around the circumference of the female tool joint. In addition, the heater can be incorporated into the same apparatus as the make/break vise assembly, or the heater can be an apparatus that is separate from the apparatus containing the make/break vise assembly. In one embodiment, the heater can be used as a stand-alone heater to heat the female tool joint.

Abstract: A combination hydraulic pipe handler and power swivel for providing services normally requiring two machines, two hydraulic systems, two engines, two spaces at a rig site, and two costs to the user. Now only one machine is required. The combination hydraulic pipe handler and power swivel can pick up tubulars, present tubulars safely to the rig floor at an adjustable angle, and provide a tilting power swivel which tilts to the same adjustable angle allowing the rig operator to threadably engage tubulars and lift the tubulars to vertical. Tailing of tubulars with a rope and manpower is not required, thus the operation is much safer than normal.

Abstract: In one embodiment, a top drive system includes a quill; a motor operable to rotate the quill; a gripper operable to engage a joint of casing; a connector bi-directionally rotationally coupled to the quill and the gripper and longitudinally coupled to the gripper; and a compensator longitudinally coupled to the quill and the connector. The compensator is operable to allow relative longitudinal movement between the connector and the quill.

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: An apparatus for continuous circulation drilling comprising a tubular body having a main passage extending along a longitudinal axis of the tubular body from a first end of the tubular body to a second end of the tubular body, a side passage and a control passage, the side passage and control passage both extending through the tubular body into the main passage, the tubular body containing a valve assembly which is operable to close the main passage when the side passage is open and to close the side passage when the main passage is open, the assembly further comprising a hydraulic connector which is operable to clamp around the tubular body, the connector comprising a housing with an interior surface which is provided with first and second grooves which, when the connector is clamped around the tubular body, each form a channel which extends in continuous loop around the exterior of the tubular body, there being at least one passage extending through the housing from an exterior surface of the housing into e

Abstract: A safety valve handling apparatus for a well operation rig includes: a mounting structure for connection to the rig; a clamp for engaging a safety valve and configured to permit rotation of the safety valve within the clamp while the safety valve remains engaged by the clamp; and an arm connected between the mounting structure and the clamp, the arm being movable and adjustable to permit movement of the clamp relative to the mounting structure. The safety valve handling apparatus can be used for controlled safety valve handling on a well operation rig, even one oriented for a slanted operation.

Abstract: A tubular rotating system for rotating threaded tubulars is provided. The system includes a frame, a plurality of rollers coupled to the frame and configured to rotate a tubular, and a control valve coupled to the frame and configured to control a rotational speed of the rollers. The control valve controls an amount of air, fluid, or electric power supplied to the system based on tension applied to the system to thereby control the speed at which the rollers rotate.

Abstract: An excavating pump apparatus and a pile installation apparatus having the same are disclosed. An excavating pump apparatus in accordance with an embodiment of the present invention may include: an excavation head being inserted into an inner space of a pile through an open hole opening the inner space of the pile and being configured to crush seafloor sediments and allow the crushed seafloor sediments to be flowed therein; an outlet conduit connected to the excavation head and being a channel for discharging the seafloor sediments flowed into the excavation head to an outside of the pile; and a pump configured to move the seafloor sediments through the outlet conduit by providing a pump pressure to the outlet conduit.

Abstract: A bend stiffener is operable to be installed on site in a collapsed state and expanded upon installation to provide increased coverage of a tubing string to be reinforced by the bend stiffener. The bend stiffener is expandable upon the tripping of tubing through the bend stiffener. The bend stiffener includes a flexible sleeve having an outer flange at an upper end and sized to receive the tubing. The bend stiffener also includes an intermediary sleeve and an external sleeve. The intermediary sleeve has a cylindrical body and an internal flange for engaging and supporting the outer flange of the flexible sleeve. Similarly, the external sleeve has an internal flange for supporting an external flange of the intermediary sleeve. When installed, the flexible sleeve slides from the intermediary sleeve and the intermediary sleeve slides from the external sleeve so that each sleeve encloses and reinforces a segment of tubing.

Abstract: An apparatus (1) for connecting elongate components (6, 8), the apparatus (1) comprising a pair of tong units (2, 4) for receiving and gripping respective elongate components (6, 8) and connecting the elongate components (6, 8) end-to-end, wherein at least one of the tong units (2, 4) is adapted to rotate the gripped elongate component (6, 8); wherein each of the first and second tong units (2, 4) defines a central opening (10, 12) where the respective elongate component (6, 8) is gripped, the central opening (10, 12) having a substantially horizontal central axis (14) and a side access (16, 18) opening for inserting the elongate component (6, 8) into the central opening (10, 12) radially relative to the central axis (14); wherein the tong units (2, 4) are spaced apart substantially horizontally so that the elongate components (6, 8) to be connected are inserted and gripped in the tong units (2, 4) in a substantially horizontal orientation.

Abstract: A dual control hydraulic circuit for a tilting power swivel having a main hydraulic pump providing an operational supply of hydraulic fluid causing a clockwise or counter clockwise rotation of the tilting power swivel. A hydraulic cylinder used to hydraulically power an angular change between a bail and a body, wherein a local control valve can enable extension and retraction of a rod of the hydraulic cylinder. An auxiliary hydraulic pump providing hydraulic fluid at a low pressure, a hydraulic reservoir fluidly connected to the main hydraulic pump and the auxiliary hydraulic pump, an engine connected to the main hydraulic pump, and a hydraulic fluid return line from a local control valve to the hydraulic reservoir used for dual control for operating the hydraulic cylinder to tilt the tilting power swivel and a remote control connected to the local control valve for controlling the local control valve.

Abstract: A drill rig tong cart is disclosed. The tong cart can include a base portion configured to interface with a drill rig. In addition, the tong cart can include a tong carriage supported by the base portion and configured to interface with a tong for coupling and uncoupling tubulars. The tong carriage can be movable relative to the base portion to alternately position the tong in an engaged position and a disengaged position relative to the tubulars.

Abstract: An expandable vertebral body device, system, instrument, and methods of assembly and using the device, system, and instrument are disclosed. The vertebral body device includes a body with a first end and a second end, a first rotating member rotatably coupled to the first end, a second rotating member rotatably coupled to the second end, a first extension member moveably coupled to the first end, and a second extension member moveably coupled to the second end. The expandable cage system comprises a vertebral body device and an insertion instrument. Methods for assembling and using the vertebral body device and instrument are also disclosed.

Abstract: The present disclosure is directed to a system for retention of drilling components of a drilling rig that includes a first drilling component with a first retention feature, a second drilling component with a second retention feature, and a secondary retention device. The first drilling component is coupled to the second drilling component and the secondary retention device engages with the first retention feature of the first drilling component and with the second retention feature of the second drilling component.

Abstract: A demolition hammer is provided that includes a housing that is reversible and a plurality of interchangeable wear plates. The demolition hammer may include a housing a housing having a first wall and a second wall opposite the first wall, and a power cell disposed within the housing, the power cell having a front face, wherein the housing is reversible such that the housing can be used with the power cell in a first orientation in which the front face faces the first wall and a second orientation in which the front face faces the second wall.

Abstract: Described herein is technology for restoring access to a user account. In particular, systems and methods for account recovery using a platform attestation credential are described. In some embodiments, the platform attestation credential is generated by an authentication device in a pre boot environment. A first copy of the platform attestation credential may be bound by an account management system to a user account. Access to the user account may subsequently be restored using a second copy of the platform attestation credential.

Abstract: Illustrative embodiments of power tools with spindle locks are disclosed. In one illustrative embodiment, a power tool may include a drive train including an output assembly, the output assembly including a spindle configured to support a tool element, a power source configured to selectively supply energy to the drive train to cause the output assembly including the spindle to rotate, a switch movable between a first position in which the power source does not supply energy to the drive train and a second position in which the power source supplies energy to the drive train, and a spindle lock configured to automatically engage the output assembly including the spindle when the switch is in the first position and to automatically disengage the output assembly including the spindle when the switch is in the second position, the spindle lock preventing rotation of the output assembly including the spindle when engaged.

Abstract: Described herein is technology for restoring access to a user account. In particular, systems and methods for account recovery using a platform attestation credential are described. In some embodiments, the platform attestation credential is generated by an authentication device in a pre boot environment. A first copy of the platform attestation credential may be bound by an account management system to a user account. Access to the user account may subsequently be restored using a second copy of the platform attestation credential.

Abstract: A top drive system is provided. In one embodiment, a top drive includes a drive stem and a load nut with mating threaded surfaces that enable the drive stem to be threaded through the load nut and to support weight of a connected drill string via the load nut. One or both of the mating threaded surfaces may have a threadform with one or more undercut thread roots. Additionally, a portion of the mating threaded surfaces, such as thread roots of the drive stem, can be shot-peened. Additional systems, devices, and methods are also disclosed.

Abstract: A driving section generates rotational driving force and has an output shaft that outputs the rotational driving force. An end-bit mounting section holds an end bit and is rotatable about a rotational axis. A friction clutch is provided between the end-bit mounting section and the driving section. The friction clutch includes a drive member and a follow member. The drive member rotates together with the driving section and has a drive-side contact surface. The follow member rotates together with the end-bit mounting section and has a follow-side contact surface contactable with the drive-side contact surface. The friction clutch is movable between a transmission position where frictional force is produced between the drive-side contact surface and the follow-side contact surface so that the output shaft and the end-bit mounting section can rotate together, and a cutoff position where the output shaft and the end-bit mounting section are non-rotatable together.

Abstract: A drive system for releasably interconnecting a motor shaft of a rotary hand held power tool and an input shaft of an attachment device that is mounted thereon includes an elongated flexible drive shaft and an elongated output shaft. The flexible drive shaft is connected to the input shaft of the attachment device and includes an outer end portion with a non-circular cross-section configured to engage a complementarily shaped cavity of an output shaft operatively attached to the power tool motor shaft. The elongated output shaft is operatively connected to the motor shaft of the power tool. The output shaft defines a generally cylindrical outer configuration along its length and includes a rearward mounting portion for attachment to the motor shaft and an intermediate portion having the complementarily shaped cavity for receiving the flexible drive shaft.

Abstract: A power tool that includes a housing, a trigger switch that is mounted to the housing, a tool output member and a motor and transmission assembly. The housing defines a handle. The motor and transmission assembly is coupled to the housing and is configured to drive the tool output member. The motor and transmission assembly include a motor, which is electrically coupled to the trigger switch, and a transmission having a transmission input member, which is drivingly coupled to the motor, and a transmission output member that is drivingly coupled to the tool output member. The motor and transmission are packaged in the housing in a manner that is extremely compact.

Abstract: A spindle attachment includes a device body having an attachment surface detachably attached to an end face of a spindle head. Fixed and movable teeth move the body in a direction of an axial line of the spindle to engage the spindle head and the body so as to freely restrict or release rotation of the body with respect to the spindle head. A coil spring urges the body so that the attachment surface is pressed onto the end face of the spindle head with the fixed and movable teeth ready for engagement. A pressure cylinder causes fluid pressure to act on the attachment surface against the spring force to release engagement between the fixed and movable teeth. A key and a key groove transmit rotation of the spindle to the body with the fluid pressure of the cylinder acting on the attachment surface of the device body.

Abstract: A power tool includes a housing and an output shaft supported by the housing for rotation about an axis. The power tool further includes a first motor disposed in the housing and a second motor disposed in the housing and coupled to the first motor. The first motor drives the output shaft and does not drive the second motor when in a first power mode, and the second motor drives the first motor and the output shaft when in a second power mode.

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: An apparatus for driving piles or drilling holes includes a self propelled vehicle with a mounting platform supported by the vehicle. A lifting and positioning arm is provided having a mounting end and a remote end. The mounting end is mounted to the platform. The arm rotates about a vertical axis relative to the platform wherein the remote end of the arm is positioned in a selected radial orientation relative to the platform. The arm pivots about a substantially horizontal axis relative to the platform wherein the arm is moved up and down to position the remote end of the arm at a selected height above or below the platform. The arm extends and retracts wherein the remote end of the arm is positioned a selected distance from the platform. A pile driver or drill assembly is pivotally mounted to the remote end of the arm.

Abstract: Mechanisms, assemblies, systems, tools, and methods incorporating the use of an offset drive shaft within an independently rotating member are provided. An example mechanism includes a base and a main shaft mounted to rotate relative to the base, a first drive shaft mounted inside the main shaft, and a first drive feature engaged with the first drive shaft. The main shaft includes a proximal end, a distal end, and a main shaft rotational axis defined therebetween. The first drive shaft is offset from the main shaft rotational axis. A first drive feature rotational axis is defined for the first drive feature and is fixed relative to the base as the main shaft rotates. The first drive feature rotates the first drive shaft.

Abstract: A prior art sucker rod tong is improved to remove a coupling completely from a sucker rod assembly comprising sucker rods joined end to end by couplings. The prior art sucker rod tong has a rotatable jaw assembly and a lower backup wrench adapted to cooperate to unscrew a coupling joining first and second rods, where the coupling remains screwed to the second rod after it is unscrewed from the first rod. The improvement comprises a coupling extractor for unscrewing the coupling from the second rod so that the coupling can be replaced. The coupling extractor comprises a shaft having an extractor end portion on each end of the shaft and a shield around each extractor end portion, wherein the coupling extractor is designed and sized to fit within and to be rotated by the jaw assembly. The extractor end portion engages the inside wall of the coupling to unscrew the coupling from the second rod. The extractor end portion is preferably a tapered, left-handed spiral fluted easy-out extractor.

Abstract: A drive system for releasably interconnecting a motor shaft of a rotary hand held power tool and an input shaft of an attachment device. The system includes an elongated flexible drive shaft connected to the input shaft, wherein the flexible drive shaft has an outer end portion with a non-circular cross-section configured to engage a complementarily shaped cavity of an output shaft operatively attached to the power tool motor shaft, where the output shaft has a generally cylindrical outer configuration along its length and a rearward mounting portion for attachment to the motor shaft, an intermediate portion having the complementarily shaped cavity for receiving the flexible drive shaft and a forward portion with an enlarged concentric opening for receiving and guiding the outer end portion of the flexible drive shaft into the cavity during mounting the attachment device on the power tool.

Abstract: An apparatus and method for quick release of a spinner head assembly of a cotton candy machine. The spinner head is snap-fit to the rotational output shaft of the motor of the cotton candy machine to prevent longitudinal separation between the two during operation. Intermeshing portions between the spinner head and the output shaft are configured to translate rotational torque between the two and thus translate rotational torque of the output shaft of the motor to the spinner head. Quick release of the head is possible by pulling on the head along the rotational axis of the output shaft to overcome the snap-fit. This allows longitudinal separation of the spinner head and disengages the intermeshing portions for complete removal of the head. Reattachment is possible by snap-fitting connection between head and output shaft.

Abstract: A power hand tool comprising an elongated housing with a nose portion having an opening concentric with a rotary output shaft, the nose portion being configured to have an accessory device mounted thereon, a shaft lock mechanism including a shaft lock actuator that is located at least adjacent to or on the nose portion and is configured to be moved by a user to engage the output shaft and prevent rotation thereof, the actuator being configured to be disabled from movement to engage the output shaft when an accessory device is mounted on the nose portion.

Abstract: This invention disclosed a power tool comprising housing, motor in the housing, switch fixed on the housing used to connect motor and power, output shaft connecting with operator and rotating in single direction in company with the motor driving, and locking device contained in the housing. Power tool has self-locking mechanism which can lock the output shaft no need additional tools or holding force. The locking act can be easier and safer.

Abstract: A screw driver capable of avoiding co-rotation of an end bit and a motor in case of sharp shooting the end bit with a groove in a head of a screw. A co-rotation preventing mechanism is engageable with an end bit mounting portion when the end bit mounting portion is at a frontward position to prevent the end bit mounting portion from being rotated in the forward direction and to allow the end bit mounting portion to rotate in the reverse direction. The preventing mechanism is disengageable from the end bit mounting portion when the end bit mounting portion is at the rearward position to allow the end bit mounting portion to rotate in both forward and reverse directions.

Abstract: A hand-held machine tool device, in particular, for a screwdriver (12a-h), having a locking device (14a-h) for locking a power take-off unit (16a-h), and having a rotational bearing device (18a-h) of the power take-off unit (16a-h). It is provided that at least part of the locking device (14a-h) and the rotational bearing device (18a-h) be formed in one piece.

Abstract: A locking assembly for the spindle of a tool includes a locking member, a biasing member interconnected with the locking member, and a collar surrounding a portion of the spindle. The spindle includes a spindle slot that receives the locking member to lock the spindle with respect to the tool housing. The collar may be rotated into an unlocked position in which the biasing member holds the locking member out of engagement with the spindle slot. The collar may also be rotated into a locked position in which a cam surface in the collar acts on the biasing member to apply a biasing force on the locking member toward engagement with the spindle slot. The biasing member may deflect to accommodate rotation of the collar into the locked position with the spindle slot not aligned with the locking member.

Abstract: A power hand tool comprising an elongated housing with a nose portion having an opening concentric with a rotary output shaft, the nose portion being configured to have an accessory device mounted thereon, a shaft lock mechanism including a shaft lock actuator that is located at least adjacent to or on the nose portion and is configured to be moved by a user to engage the output shaft and prevent rotation thereof, the actuator being configured to be disabled from movement to engage the output shaft when an accessory device is mounted on the nose portion.

Abstract: A vibration generator for a vibration pile driver has imbalance masses that can rotate and which are disposed on shafts. The rotational position of the imbalance masses can be adjusted relative to one another. A control and regulation circuit is provided which has a memory unit for storing ground composition data sets or task-specific default data sets with defined operational characteristic variables. The unit also has sensors for continuous detection of the defined operational characteristic variables, an evaluation unit for comparing the operational characteristic variables that are determined with the operational characteristic variables of the selected default data set, a regulation device for regulating the vibration generator, and a control device for controlling the adjustment of the rotational position of the imbalance masses relative to one another. The vibration generator is part of a vibration pile driver.

Abstract: A method and apparatus for providing additional torque in a top drive system for rotating a tubular during tubular drilling, running, and/or handling operations. In one embodiment, a gear arrangement is operatively connected to a top drive of the top drive system to increase the amount of available torque for rotating a tubular. In another embodiment, a gear box is operatively connected to the top drive to boost the amount of torque available for rotating the tubular.

Abstract: An extremely useful rotating tool is provided that can prevent rattling caused by a clearance between a machine tool and a machine tool retaining hole while bringing the axial center position of the machine tool and the axial center position of the machine tool retaining hole as close together as possible. The present invention is a rotating tool having a rotating main shaft (4), and the rotating main shaft (4) is provided with a machine tool retaining hole (3) having a cross-sectional shape that substantially matches a base part (2) of a driver bit, drill bit, or other machine tool (1) having a polygonal cross-sectional shape that is inserted into the machine tool retaining hole (3), wherein the rotating tool rotates the machine tool (1) inserted in the machine tool retaining hole (3) by rotating the rotating main shaft (4) and performs work.

Abstract: A locking assembly for the spindle of a tool includes a locking member, a biasing member interconnected with the locking member, and a collar surrounding a portion of the spindle. The spindle includes a spindle slot that receives the locking member to lock the spindle with respect to the tool housing. The collar may be rotated into an unlocked position in which the biasing member holds the locking member out of engagement with the spindle slot. The collar may also be rotated into a locked position in which a cam surface in the collar acts on the biasing member to apply a biasing force on the locking member toward engagement with the spindle slot. The biasing member may deflect to accommodate rotation of the collar into the locked position with the spindle slot not aligned with the locking member.

Abstract: A rotary power tool of the invention has a motor, a motor shaft driven by the motor, an output shaft coupled to the motor shaft via an automatic spindle locking mechanism, a housing portion surrounding the output shaft, and a braking member that is non-rotatable relative to the housing portion. The braking member exercises a braking torque on the output shaft whenever it rotates.

Abstract: A tool wrench assembly for a blasthole drill includes a fork pivotally fixed relative to at least one actuator that moves the fork between an engaged and a disengaged position.

Abstract: The invention relates to a drilling implement for installing or erecting a drilling pillar in the ground, having a mast, a carriage displaceably mounted on the mast, a rotary drive located on the carriage for the rotary driving of a drill pipe and a pipe bunker connectable to the drill pipe with a storage area for fill material for filling a drill hole on drawing the drill pipe. According to the invention it is provided that the pipe bunker is axially adjustably mounted with respect to the carriage on said carriage. The invention also relates to a method for installing or erecting a drilling pillar, which can be implemented with a drilling implement according to the invention.

Abstract: A system to control a threading operation includes a first tubular and a second tubular, wherein the first tubular and the second tubular include corresponding thread profiles. The system further includes a drive assembly configured to rotate the second tubular with respect to the first tubular, wherein vertical and rotation movements of the drive assembly are controllable through a drive assembly controller, and wherein the drive assembly controller is configured to operate in a threading mode when the second tubular is threaded with the first tubular.

Abstract: A tubular gripping system and a top drive drilling system with such a tubular gripping system, in at least some aspects, the gripping system beneath the top drive unit and, in at least some aspects, the gripping system having a body with four spaced-apart grippers movably connected thereto and piston/cylinder devices movably interconnected with each gripper for moving the grippers to clamp the tubular.