Abstract: A cylinder lock device includes a body, a rotor rotatably arranged inside the body, a holder lever rotationally driven according to a rotation of the rotor, an engagement lever that is link-connected to the holder lever so as to be angularly adjustable and rotationally driven according to a rotation of the rotor, and a retention mechanism to hold the engagement lever into a predetermined direction relative to the body. The retention mechanism is configured to force a protrusion on the engagement lever to contact the holder lever by an elastic force thereof.

Abstract: An antenna for reception and transmission of signals within an enclosure. The antenna includes a first lead for connection to a printed circuit board and a second lead. A plurality of vertical members extend in parallel to one another and spaced a predetermined distance apart. Each vertical member has a first end and a second end. A plurality of horizontal members is provided. Each horizontal member extends alternately between first ends of a pair of adjacent vertical members and second ends of a next pair of adjacent vertical members forming a connection between said first lead and said second lead.

Abstract: A dual-ring tubular lock assembly is provided. Inner and outer walls of a key are formed with inner-ring and outer-ring notches. A lock cylinder is inserted in a central through hole of a lock housing. A front end of the lock cylinder is formed with a tubular keyhole. The tubular keyhole is formed with inner-ring and outer-ring grooves corresponding to the inner-ring and outer-ring notches and mounted with inner-ring and outer-ring key pins. A rear end of the lock cylinder passes through a central perforation of a lower bead seat and extends out of the lock housing. The lower bead seat is fixed in the center through hole. The lower bead seat is formed with inner-ring and outer-ring holes corresponding to the inner-ring and outer-ring grooves and mounted with inner-ring and outer-ring driver pins and springs. The latch is fixed to the rear end of the lock cylinder.

Abstract: An exit device having a dogging mechanism assembly for providing a visual indication of the state or position of at least certain components of the exit device, such as, for example, a latch, drive rod, and/or a hook bracket. The dogging mechanism assembly includes a displaceable arm actuator mechanism that is coupled to the hook bracket, the hook bracket being adapted to lockingly engage the drive rod. The actuator arm mechanism is adapted to displace an indicator mechanism at least from a first indicator position to a second indicator position as the actuator arm mechanism is displaced to at least one of a first position and a second position. The indicator mechanism has one or more indicators that provide a visual indication of a state or position of a component of the exit device when the indicator mechanism is in at least one of a first and second indicator position.

Abstract: A support apparatus having a variable security level, including a tray for receiving a portable electronic device. The tray has a mounting interface structure on its outside backing surface. An unsecurable retainer mechanism releasably retains the portable electronic device in the tray. A variable level security mechanism securably retains the portable electronic device in the tray, the variably securable latching element includes: a latching element that is movable between a latched configuration relative to the tray for securably latching the portable electronic device in the tray, and an unlatched configuration, a security element that is movable between a secured configuration for alternatively securing the latching element in the latched and unlatched configurations thereof, and an unsecured configuration, and a lock element that is coupled to the security element for alternatively locking the security element in the secured and unsecured configurations.

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 vehicle includes a body structure having an opening, a liftgate panel movably mounted to the body adjacent the opening, and a decklid that is movably mounted to the liftgate. The vehicle includes a lock member that is movable to first, second, and third positions. The lock member locks the liftgate to the decklid when in the first position. The lock member locks the liftgate to the body structure in the second position. The lock member simultaneously locks both the liftgate and the decklid to the body structure when the lock member is in the third position.

Abstract: A vehicle and a door assembly each include an inner panel and an outer panel coupled to each other to define a door. A first handle is attached to the outer panel. A mirror apparatus is supported by the door and spaced apart from the first handle. A lock apparatus is supported by at least one of the door and the mirror apparatus. The lock apparatus is disposed closer to the mirror apparatus than the first handle.

Abstract: A vehicle door handle apparatus is disclosed that generally includes a structural core and an outer layer. The structural core has an outer surface, a base portion, and a handle portion that extends from the base portion. The outer layer extends about and covers the outer surface of at least the handle portion of the structural core. The structural core is made of a first material that contains an engineering thermoplastic and glass fibers for reinforcement. The outer layer is made of a second material that contains the engineering thermoplastic and a milled material to give the outer layer a metallic surface finish. Non-limiting examples of the engineering thermoplastic are polyoxymethylene and polybutylene terephthalate. A method is also disclosed for producing an injection molded component having a metallic surface finish such as the disclosed vehicle door handle apparatus.

Abstract: A vehicle door latch assembly is disclosed herein, having: a fork bolt movably secured to the latch assembly; a detent lever movably secured to the latch assembly, the detent lever being capable of movement between an engaged position and a disengaged position, the detent lever retains the fork bolt in a latched position when the detent lever is in the engaged position and an engagement surface of the detent lever contacts an engagement surface of the fork bolt; an inertia block out assembly for preventing the detent lever from moving into the disengaged position when the inertia block out assembly is in a blocking position; and a manual override mechanism for the inertia block out assembly, wherein the manual override mechanism requires at least three independent actions to be performed to move the inertia block out assembly from the blocking position to an unblocking position.

Abstract: A compatible door hinge for vehicles includes a lower plate which has a pin hole and a hinge hole in which a hinge pin and a bushing pin are respectively disposed, an upper plate which is coupled to the lower plate by the hinge pin and can be changed in position relative to the lower plate, and a body plate with which the lower plate and the upper plate are integrated by the bushing pin passing through them. A minimum required setting distance between the door hinge and an upper or lower door skin of a vehicle door can be maintained without changing the design shape of the door skin. Particularly, a door opening trajectory can be formed closer to the door skin and reduced in radius, such that a rotation gap is ensured.

Abstract: A device for moving a movable furniture part, the device including a basic component on which a force accumulator is present such that the movable furniture part under the action of the force accumulator is capable of being put in the opening direction of the movable furniture part. A separate cover component, configured so as to match the basic component, of the device is present, which cover component covers the basic component, wherein connection means on the cover component are configured in such a manner that integration of the device on a counter portion on the item of furniture and/or the guide means is arrangeable using the connection means which are present on the cover component.

Abstract: A device is provided for controlling the closing movement of a sliding door. The device comprises a housing (10) containing a spring (11) which is actuable to provide a pulling force to the closing movement of the door. The housing (10) also contains a damper (12) which is actuable to impart a damped resistive force to the closing movement of the door. Incorporated within the device is a gearing mechanism for converting the rate of the closing movement of the door into two or more rates of actuation of the damper over at least part of the door's travel.

Abstract: A friction based counterbalance mechanism for coupling with a closure panel to assist in opening and closing of the closure panel for at least a portion of a path between a fully closed position and a fully open position of the closure panel, the counterbalance mechanism including: an elongate member positioned on a longitudinal axis extending between the proximal and distal ends of the counterbalance mechanism, the elongate member having a peripheral surface, the elongate member having a proximal end for coupling to one of the closure panel and a body of a vehicle; a travel member having a body and at least one friction member mounted on the body, the travel member positioned on the longitudinal axis for reciprocation there along and for providing contact between the at least one friction member and the peripheral surface, said contact for generating a friction force in a first region along the longitudinal axis and in a second region along the longitudinal axis; and a support member coupled to the travel el

Abstract: A hinge, for a movable furniture part, in particular, a door or flap, that is fastened to a body of an item of furniture, wherein the hinge has a first attachment element, which is connected pivotably to a second attachment element via a joint mechanism, wherein the joint mechanism comprises at least one articulated lever, which is mounted pivotably on the first attachment element via a first bearing element. The hinge is characterized in that the articulated lever is arranged in a rotationally fixed manner on the first bearing element.

Abstract: A door opening and closing apparatus opens and closes a slide door by cooperating with a guide roller unit fixed to the slide door of a vehicle. The guide roller unit includes a guide member and a belt-side bracket connected to the guide member. The door opening and closing apparatus includes a support member made of resin, plural pulleys supported at the support member, and a transmission belt engaged at the plural pulleys. The support member is fixed to a body of the vehicle and includes a rail portion at which the guide member is mounted. The belt-side bracket is fixed to the transmission belt. An electric drive source moves the transmission belt for opening and closing the slide door in a state where the guide member is guided along the rail portion. The support member includes an engagement portion configured to hold the belt-side bracket.

Abstract: A sensor device for a motor vehicle including a control and evaluation circuit and at least one sensor electrode coupled therewith, wherein the sensor electrode is designed as a conductor loop, which is coupled to the control and evaluation circuit at two contacts. The control and evaluation circuit has a measurement circuit, which monitors the sensor electrode for capacitance changes. The control and evaluation circuit includes a testing circuit that can be activated intermittently, which tests the integrity of the sensor electrode and its coupling to the control and evaluation circuit. The testing circuit has a triggering mechanism that can be activated in order to intermittently couple a test capacitor to the sensor electrode, such that the measurement circuit also detects the capacitance of the test capacitor in addition to the capacitance of the sensor electrode.

Abstract: A method and device are presented that creates a channel adjacent a nailing flange of a window in between the window and the rough opening that receives the window. The channel is created by establishing a barrier that prevents foam insulation inserted into the space between the window and the rough opening from reaching the nailing flange. The channel then ensures proper drainage of water that enters the window cavity down to the window sill. A gasket is presented that can be attached to the window or the rough opening to create the barrier. Alternatively, a disintegrating object or a wicking object can be used to impede the flow of insulation foam and to create the appropriate channel. The present invention is equally applicable to doors or other framed objects received into the exterior shell of a building.

Abstract: An aircraft cargo door shield releasably attachable to an aircraft cargo door and configured for protecting an aircraft cargo door during loading and unloading of cargo. The aircraft cargo door shield includes a panel configured for covering a portion of an external skin of the cargo door, and one or more fastening or attachment mechanisms configured for releasably holding the panel adjacent to the cargo door during use. The aircraft cargo door shield may include upper attachment mechanisms having elongated hooks that may engage an upper edge of the aircraft cargo door. Some or all of the attachment mechanisms may be coupled to tension members to retain the engagement of the attachment mechanisms to the aircraft cargo door during use.

Abstract: An anchor for laminated glass includes an expansion dowel that has expansion appendices situated circumferentially, and is preferably made of a flexible material and having a conical cross-section with thickness increasing in the direction of insertion. Above the line of the expansion appendices is a circumferential groove, situated at the height of the edge of transition of the cylindrical hole into the conical hole, forming an empty space.

Abstract: A barrier for the inside of a home. The barrier includes two partitions that slide relative to each other to increase and decrease a distance between ends of the barrier. The partitions slide into and out of confronting relationships with each other. The partitions engage each other at upper and lower locations and further at a medial location where an elongate member of one partition is received in a tube engaged to the other partition. A threaded piece upon being turned brings pressure to bear upon an end of the tube such that the partitions can be incrementally expanded apart and thereby pressurized between two locations within the home so as to block off one portion of the home. The threaded piece is slideable along the elongate member.

Abstract: A covering for an architectural opening is provided. The covering may include an outer roller, an inner roller received within the outer roller, a first shade secured to and adapted to be wrapped around the outer roller, and a second shade secured to and adapted to be wrapped around the inner roller. The outer roller may define an elongated slot through which the second shade extends and retracts. Opposite ends of the inner roller may be aligned with corresponding ends of the outer roller. A mounting system may support the inner and outer rollers for rotative movement about a central longitudinal axis of the inner roller. A bottom rail of the second shade may engage the outer roller when the second shade is in the fully retracted position. Rotation of the inner roller when the second shade is in a retracted position may cause rotation of the outer roller.

Abstract: A roll up flexible door assembly includes a flexible door with guides mounted along the opposed sides. Opposed tracks are mounted at a spaced distance from one another with each of the tracks having inner edges positioned opposite one another. An angled guide liner is mounted to each track and extends longitudinally along at least a portion of the track. The angled guide liner is angled with respect to the inner edge with the angle increasing from the top to the bottom. The guides are received within the tracks and adapted to engage the angled guide liner as the flexible door is raised and lowered in the tracks. The guides and the angled guide liner tighten the flexible door as the flexible door is lowered.

Abstract: In one embodiment of the invention, a ladder and method for removably mounting the ladder on a recreational vehicle is disclosed. The ladder may be removed and used as a standard step ladder. The ladder includes a top end and two pairs of legs extending downward from the top end. At least one of the pairs of legs is pivotally mounted to the top end, and a pivoting limiting mechanism is provided to allow the pairs of legs to fold adjacent one another or unfold to a use position as a step ladder. An upper mounting arrangement is attached to the recreational vehicle. The arrangement includes two free ends extending downwardly therefrom; and the top end of the ladder includes receivers for receiving free ends of the upper mounting arrangement.

Abstract: The present disclosure provides a machine capable of drilling into the ground at a wide range of angles relative to the ground surface. The present disclosure also provides novel drilling methods.

Abstract: In one embodiment, a method includes drilling a wellbore in a formation with a drilling tool. The method further includes receiving electromagnetic radiation at an opto-analytical device coupled to the drilling tool. The method also includes determining a drilling characteristic based on the received electromagnetic radiation, and detecting an event associated with drilling the wellbore based on the determined drilling characteristic.

Abstract: A method for drilling cavities in underground formations in which drill cuttings are removed by injecting an aqueous composition (C) into the drill hole. Composition (C) includes between 1 and 65 wt. % salt(s), between 0.05 and 2 wt. % anti-foaming agent(s), between 13 and 97.95 wt. % water, and between 1 and 20 wt. % composition (C2). Composition (C2) includes, optionally, between 0.1 and 30 wt. % auxiliary agent(s), between 0 and 100 wt. % of a surfactant system of one or more compositions (C1) according to R1—O-(G1)p-H, R1 being an aliphatic radical including between 4 and 16 carbon atoms, G1 being a reducing sugar residue and 1.05?p?5, and between 0 and 50 wt. % alcohol(s) according to R1—OH, R1 being an aliphatic radical including between 4 and 16 carbon atoms. Also, compositions (C2) and their use as a lubricant for producing an aqueous drilling mud.

Abstract: The disclosure of this application is directed to a downhole tool comprising a central element/member and a sleeve that is rotatably and orbitally disposed around the central element/member. The sleeve rotates and orbits around the central element/member responsive to fluid flowing through the downhole too. The disclosure is also related to a method of advancing the downhole tool in a well by flowing fluid through the tool.

Abstract: A downhole under-reamer for use in reaming a downhole bore. The under-reamer comprises a body and a plurality of cutters mounted on the body. The cutters are mounted on the body so as to be extendable from a retracted position to at least two extended positions. The at least two extended positions comprise reaming positions at respective first and second reaming diameters.

Abstract: A method of forming polycrystalline diamond includes encapsulating diamond particles, carbon monoxide, and carbon dioxide in a container. The encapsulated diamond particles, carbon monoxide, and carbon dioxide are subjected to a pressure of at least 4.5 GPa and a temperature of at least 1400° C. to form inter-granular bonds between the diamond particles. A cutting element includes polycrystalline diamond material comprising inter-bonded grains of diamond. The polycrystalline diamond material is substantially free of graphitic carbon and metallic compounds. The polycrystalline diamond material exhibits a density of at least about 3.49 g/cm3 and a modulus of at least about 1000 GPa. An earth-boring tool may include such a cutting element secured to a body.

Abstract: Polycrystalline diamond compacts (“PDCs”) include a polycrystalline diamond (“PCD”) table in which cobalt is alloyed with phosphorous to improve the thermal stability of the PCD table. For example, a PDC includes a substrate and a PCD table including an upper surface spaced from an interfacial surface that is bonded to the substrate. The PCD table includes a plurality of diamond grains defining a plurality of interstitial regions. The PCD table further includes an alloy comprising at least one Group VIII metal and phosphorous. The alloy is disposed in at least a portion of the plurality of interstitial regions.

Abstract: A modular mast for an earth-drilling machine includes a base module, a crown module, and a fastener. The crown module is coupled with the base module via the fastener. The base module and the crown module each have a surface lying in a common plane. The fastener does not extend beyond the common plane.

Abstract: A system and method for an enhanced interconnect for downhole tools along a drill string used in subterranean operations is described herein. The system (300) may include a first drill string segment (302) comprising a first conductive element (306) and a second drill string segment (304) coupled to the first drill string segment. The system may also include a tool connect assembly (310) disposed within an internal bore of the second drill string segment. The tool connect assembly may comprise a second conductive element (312) electrically connected to the downhole tool, and the second conductive element may be electrically coupled to the first conductive element through at most two electrical interfaces.

Abstract: A travel joint comprises an outer housing, an inner mandrel slidingly disposed within the outer housing, and a release device positioned between the outer housing and the inner mandrel. The release device is configured to selectively prevent and allow relative axial movement between the outer housing and the inner mandrel in response to a fluid pressure supplied to the release device from a flowbore of the outer housing or a flowbore of the inner mandrel.

Abstract: This invention relates to an articulating component (16) of a downhole assembly, and to a downhole steering assembly. There is provided an articulating component (16) having a first end (40) and a second end (42), the articulating component being adapted to transmit torque between the first end and the second end. The articulating component has a pivotable coupling (46) between its first and second ends and at least one control element for the pivotable coupling, the control element(s) having an active condition in which the pivotable coupling is substantially locked against pivoting movement, and an inactive condition in which the pivotable coupling is unlocked. In a downhole steering assembly the articulating component is located downhole of the steering component whereby to protect the steering component from unwanted vibrations generated downhole, or uphole of the steering component whereby to protect the steering component from unwanted vibrations generated uphole, or both.

Abstract: A jack and push/pull apparatus is provided by attaching to a wellhead an extendable/contractible horseshoe-shaped jack assembly of sufficient diameter to surround and act upon the tubing or casing to be manipulated in the well, the linear action of the assembly being powered between an extended and a retracted position, the assembly having at least one tube-gripping mechanism at the end of the assembly away from the wellhead attachment. Tubing is inserted into the well bore through the assembly and the wellhead, and when injection forces are desired tube-gripping means grip the tubing being injected and the apparatus is powered to a retracted position, forcing the grasped tubing into the well. The operation may be reversed to pull tubing or casing. The assembly can be simply added to the rig while tubing is present on and above the rig's floor.

Abstract: A hydraulic draw-works comprises several hydraulic cylinders of mixed orientation, such that some hydraulic cylinders actuate upwards and some hydraulic cylinders actuate downwards. These cylinders are connected by a plurality of braces mounted along a guide rail, and the drill head is mounted on a carriage along the guide rail and actuated by the upwards-oriented cylinders. The use of mixed orientation cylinders allows the effective vertical stroke length required to raise and lower the drill head to be halved. In a preferred embodiment, through-rod porting of the downwards-oriented cylinders supplies hydraulic fluid to the remainder through a manifold, and digitally controlled directional valves allow precise control of the drill head.

Abstract: The present invention relates to an apparatus and method for use in subterranean exploration, and provides a rapid rig-up and rig-down pipe racking system that is capable of being retrofit to an existing drilling rig. In particular, the invention relates to a pipe drill floor mounted pipe racking system that is capable of controlled movement of pipe in three dimensions, and most importantly, capable of rapid and precise movement of multiple connected sections of pipe. The invention is capable of moving stands of connected pipe from a racked position on the drill floor to an accurate stabbing position directly above a drill string component held in a rotary table.

Abstract: The present invention relates generally to a Top Drive Pipe Spinner (TDPS). The TDPS is a tool that allows for the setting of casing without a specialized crew or any additional power source. By employing the weight of the existing top drive to set slips below the casing collar and on the pipe, the TDPS allows one casing to be threaded onto the next in a timely and efficient manner. The casing tongs of the TDPS use passive release weight to release the casing collar from the casing to allow for the successive insertion of another casing section. The top drive spins the TDPS and compresses the unit onto the casing, then lifts the unit and releases the casing when desired.

Abstract: Producing a screw connection between a drill head provided for ground boreholes and an element of a drill pipe includes using a device for holding the drill head provided for ground boreholes. The device is held by a first clamping device of a clamping-screwing device. The element to be connected to the drill head is held by a second clamping device of the clamping-screwing-device and the element of the drill pipe to be connected is moved by the clamping-screwing device in relation to the device such that the relative rotation movement between the drill head and the element of the drill pipe required for the desired screw connection is performed by the clamping-screwing device.

Abstract: The articulated wireline hole finder is a modular device which attaches to the bottom of a wireline logging tool-string to aid conveyance down irregular shaped and/or deviated boreholes which possess features such as ledges, washouts, and contractions, that might otherwise terminate full descent of the tool-string to the bottom of the borehole and thereby compromise the wireline data acquisition objectives. Elements of the articulated wireline hole finder may include a low friction roller nose assembly and spacer sub, an articulated spring joint, that transfers tool-string weight and directs lateral movement of the roller nose towards hole center, and a pair of five arm centralizers that possess a wide dynamic range.

Abstract: A system and method for positioning a tool within a tubular segment or a tubular tool, wherein the interior surface of the tubular segment or tubular tool is provided with one or more pluralities of grooves, each defining a selected profile. A downhole tool is lowered into the tubular segment or tubular tool, having a blade in communication therewith. The blade includes a plurality of protruding members thereon, which define a profile complementary to one of the selected profiles formed by one of the pluralities of grooves. A biasing member biases the blade toward the interior surface of the tubular segment or tubular tool to engage the protruding members of the blade within the complementary profile of the tubular segment or the tubular tool. The system and method further include a slip and wedge assembly usable to position a tubular segment or tubular tool within a tubular member or wellbore.

Abstract: A mill for use in milling a section in a wellbore is disclosed that includes a first concave curved section followed by a substantially flat section and a second concave curved section following the substantially flat section and a number of blades attached to the first concave curved section, substantially flat section and the second concave curved section, wherein each such blade includes a first convex curved portion that corresponds to the first concave curved section and a second convex curved portion that corresponds to the second concave curved section.

Abstract: The present disclosure is directed toward a downhole tool used to free stuck tools in a wellbore and the method of using the downhole tool. The downhole tool includes at least one packer element for engaging a casing in a wellbore. The packer works to isolate one area of the casing from another. The downhole tool also includes at least one slip element for engaging the casing to maintain the position of the downhole tool in the casing or wellbore. Further, the downhole tool includes a mandrel slidably disposed within the at least one packer element and the at least one slip. The mandrel includes at least one port disposed therein above the at least one packer element when the mandrel is in a first position.

Abstract: A modular assembly for a wellhead has a housing and a plurality of modular cartridges. The housing connects with a studded or flanged connection to the wellhead, which can have a tubing adapter, casing hanger, etc. The modular cartridges can interchangeably stack in the housing's internal pocket so that the bores of the stacked cartridges configure the through-bore of the assembly communicating the wellhead with external components, such as flow lines, capillary lines, etc. The modular cartridges include a spacer cartridge, a hanger cartridge, a valve cartridge, and a cross cartridge. The spacer cartridge can be used to space other cartridges in the internal pocket, and the hanger cartridge can be used to support capillary strings and/or velocity strings in the wellhead. The valve cartridges have valve elements that can be opened and closed by bonnets that affix externally to the housing.

Abstract: A wellhead assembly includes first and second wellhead members. An annular lock groove is located on an inner or an outer diameter surface of the first wellhead member. An annular lock ring is supported on an annular shoulder of the second wellhead member and is radially moveable between an unset position and a set position where a locking profile of the annular lock ring engages the annular lock groove. The second wellhead member is positioned concentrically with the first wellhead member, defining an annulus between the first and second wellhead members. An energizing ring is positioned in the annulus and axially movable between an unengaged position and an engaged position. The energizing ring has an engaging portion with a corrugated shape in cross section that is interference fit between the annular lock ring and the second wellhead member when the energizing ring is in the engaged position.

Abstract: A technique facilitates protection of potentially susceptible components from unwanted exposure to well fluids or other fluids in a monobore subsea installation. The subsea installation may comprise various components, e.g. a tubing hanger and a subsea tree which form a plenum region therebetween. An annulus stab (or stabs) is positioned to extend between the tubing hanger and the subsea tree so as to provide an isolated flow path within the annulus stab and through the plenum region. The isolated flow path also may extend longitudinally through the tubing hanger until exiting through a side of the tubing hanger. The annulus stab and overall isolated flow path are thus able to accommodate an annulus flow within the monobore subsea installation while protecting components exposed to the plenum region from contact with deleterious fluids in the annulus flow path.

Abstract: A method includes in a single trip running a completion system having an internal bore into a wellbore that penetrates a formation zone, the completion system having an upper completion connected to a lower completion, setting an isolation packer forming a barrier above the formation zone, displacing the annulus fluid above the set isolation packer and then setting an upper packer thereby providing a completion barrier above the set isolation packer. The annulus fluid may be displaced prior to setting an upper completion packer.

Abstract: A safety mechanism comprising: an obstructing member moveable between a first position where fluid flow is permitted, and a second position where fluid flow is restricted preferably blocked; a movement mechanism; and a wireless receiver, often an acoustic transceiver, adapted to receive a wireless signal; wherein the movement mechanism is operable to move the obstructing member from one of the first and second positions to the other of the first and second positions in response to a change in the signal being received by the wireless receiver. Embodiments of the invention thus provide a safety mechanism for a well such as a valve, packer, plug or sleeve, which can be operated wirelessly and so may allow operation of safety mechanisms in a well even when emergency situations have occurred.

Abstract: A plugging device for sealing against an inner surface of a pipe includes a mandrel, a sealing device, and an actuating device. The sealing device includes a first body provided circumferentially around the mandrel, an upper supporting device provided axially above the first body, and a lower supporting device provided axially below the first body. The actuating device is connected to at least one of the supporting devices for actuating the sealing device between a retracted state and an expanded state. The sealing device includes a second, sealing body provided circumferentially around the mandrel. An inner surface of the second sealing body is engaged with an outer surface of the first body in the expanded state. The second sealing body is moved from the retracted state to the expanded state by an axial displacement of at least one of the supporting devices towards each other.