Abstract: Hard panels formed from a wood-based material and having a decorative layer for floor coverings are provided, at least on two opposite edges, with coupling devices made in one piece with the panels wherein similar panels may be coupled together to form a floor covering, wherein these coupling devices provide for an interlocking in a direction perpendicular to the plane of coupled panels, as well as in a direction perpendicular to the edges concerned and parallel to the plane of coupled panels. These coupling devices are constituted of a tongue and a groove. The top side of the tongue has a protrusion that cooperates with a meshing recess located in the lower side of the upper lip of the groove of the coupling devices, and a portion extending generally parallel with the plane of the panel to form a contact surface cooperating with the lower side of the upper lip of the groove.

Abstract: Described herein are methods for unidirectional installation of a surface covering comprising: providing a plurality of floor tiles, each tile comprising: a linoleum core; a top major surface; a bottom major surface; a machine direction edge extending between the top major surface and the bottom major surface running parallel to the machine direction of the tile and; an across machine direction edge extending between the top major surface and the bottom major surface running parallel to the across machine direction of the tile; wherein the machine direction of the tile has a first dimensional stability; and the across machine direction of the tile has a second dimensional stability; placing a first tile on a support base; placing a second tile on the support base adjacent the first tile; and abutting the machine direction edge of the second tile with the machine direction edge of the first tile.

Abstract: An adjustable back support platform for supporting a user's body while the user lies on his back, facing up in a cabinet or towards the bottom of the sink to perform desired tasks comprises an elongated platform member having an attachment ledge attached at one end and a hinged foot member disposed on the other end. The rectangular board shaped elongated platform member has the L shaped attachment ledge permanently attached to one end such the plane of their respective top surfaces are shared. The hinged foot member, attached to the bottom surface of the platform member near the end opposite the end to which the attachment bracket is attached, hinges between a parallel and a perpendicular positions, thereby enabling the adjustable back support to be placed in two distinct orientations against a ledge.

Abstract: A space saving anchor point for a concrete deck or column. The anchor point includes an external rigid member that attaches to the elongated receiver box and becomes embedded into the concrete. The external rigid member may be a T-shaped bracket with an elongated main flange and two parallel side flanges or two L-shaped brackets each with a main flange and a perpendicularly aligned side flange. Formed between the two side flanges on the T-bracket is a center space that receives an elongated receiver box. The elongated box is a partially enclosed structure with a lower opening that communicates with an interior cavity. Extending between the side flanges and transversely through the interior cavity is a rod with its opposite ends that extend laterally from the sides of the side flanges and become covered with concrete. Attached to the portion of the rod located inside the elongated box's interior cavity is an elongated connector plate.

Abstract: A method of making a pool liner, said pool liner having a floor section, a wall section and substantially invisible seams, said method comprising the steps of: providing a plurality of floor sheets wherein each sheet of said plurality of floor sheets has an edge; arranging said floor sheets in a pre-determined direction such that at least one edge of one sheet of said first plurality of floor sheets overlaps an adjacent edge of one sheet of said first plurality of floor sheets thereby creating a floor sheet to floor sheet intersection; heat welding said overlapping floor sheets at said floor sheet to floor sheet intersection; providing at least one wall sheet where said at least one wall sheet has an edge; placing said at least one wall sheet generally perpendicularly relative to said plurality of floor sheets; overlapping said at least one wall sheet with said floor sheets thereby creating a floor sheet to wall sheet intersection; and heat welding said at least one wall sheet with overlapping floor sheets at

Abstract: Anti-ballistic systems and methods for making same are described. The anti-ballistic systems may be formed from various materials arranged in a structure, such as a wall structure. For example, an anti-ballistic system may be formed from a metal material, a polymer material, and a stone material. In some embodiments, the metal material may include aluminum (for example, an aluminum composite panel), the polymer material may include ethylene vinyl acetate, and the stone material may include granite. The anti-ballistic wall systems may be configured to be resistant to ballistics, blasts, and/or forced entry.

Abstract: Disclosed is a pipe cover. The pipe cover has coupling units provided at both ends thereof and is disposed so as to surround a post structure by combining the coupling unit of one unit cover with the coupling unit of another unit cover.

Abstract: An awning arm assembly is provided that includes inner and outer arms. A joint is provided that has an axle, e.g., any structure about which rotation can be provided coupled with one of the inner arm and the outer arm and a hollow body disposed about the axle. The hollow-body is coupled with the other of the inner arm and the outer arm. The hollow body is coupled with the axle such that when the outer arm moves relative to the inner arm the angle between the hollow body and the axle (and thereby the inner and outer arms) is adjusted.

Abstract: One embodiment of the invention relates to a self-contained folding shelter, including a rigid base with a first base portion and a second base portion and a hinge coupled to the first base portion and the second base portion. The hinge defines a hinge axis such that the first base portion and the second base portions are pivotally movable between an open configuration and a closed configuration. The folding shelter further includes a first pair of rail members disposed along the sides of the first base portion and a second pair of rail members disposed along the sides of the second base portion. The first and second pairs of rail members extend generally orthogonal to the hinge axis. The first pair of rail members are aligned with the second pair of rail members when the first and second base portions are in the open configuration.

Abstract: A dial wheel device has a controller. The controller has a positioning rod. An adjuster, a dial wheel module, a seat and a restoring element are mounted on the positioning rod. The dial wheel module has multiple dial wheel assemblies. Each dial wheel assembly has an outer ring and an inner ring. In the code-unchanged state, the outer ring and the inner ring are coactive. In the code-changing state, the adjuster is rotated and the guide element forms a lateral displacement to push the inner ring, and the outer ring and the inner ring are non-coactive. The outer ring is turned to reset the code. When the code-changing state is finished, the adjuster is rotated again and the outer ring and the inner ring are coactive again. Therefore, the components of the code-changeable assembly are simplified and the dial wheel device is easy to assemble and operate.

Abstract: A combination lock having a plurality of dials and clutches arranged to control a lock shackle is disclosed. Each of the dials is mounted on a different clutch to form a dial-clutch pair. The clutch has a protrusion and the dial has an open slot dimensioned to receive a protrusion and a plurality of faulty notches. The protrusion is so located that when the lock is in the lock mode, the protrusion in each of the dial-clutch pairs is disengaged from the open slot, allowing the dial to rotate relative to the clutch. Since the clutches do not turn along with the dials and the faulty notches look similar to the open slot, it would be difficult for an intruder to pick the lock by peeking the protrusion of the clutches while rotating the dials.

Abstract: A door security apparatus including an extension beam having a first and a second end portion with a latch to engage a door frame and the beam therethrough the door, also a cap having a void and a first toothed distal end and a proximal end that is affixed to the extension beam second end portion that is disposed within the void. Also a cover having a base with a second tooth and a sidewall extending from the base, the base having an aperture that the extension beam slides in, the second tooth is removably engagable to the first tooth, plus a spring for biasing the cap and cover apart resulting in free movement, and when the cap and cover are brought together the first and second teeth engage to allow the door to disengage through manual motion from the cover to the cap to the extension beam and latch.

Abstract: A lock with a door handle and/or an anti-panic bar, which is/are operatively connected to a follower that can be coupled and uncoupled, with an electromechanical energizing unit and at least one sensor for the access control of a door, where in an uncoupled condition of the follower, the follower is in a contact position with the sensor, and wherein by activating the electromechanical energizing unit, the follower can be transferred into a coupling condition, wherein, in the coupling condition, the follower releases the sensor into a release position by actuating the door handle and/or the anti-panic bar, where the follower includes an arm with a rotatably supported actuating element, where, in the coupling condition, by actuating the door handle and/or the anti-panic bar, the actuating element releases the sensor from the contact position into the release position.

Abstract: A cable guardrail security device that includes an enclosure having a body with a passageway extending through the body and a locking mechanism to releasably lock the enclosure onto a cable of a cable guardrail over the location of the cable clamps that secure the cable so that the enclosure blocks access to the cable clamps. The security device includes opposing apertures in the enclosure that are designed to receive a shackle of a lock therethrough.

Abstract: A cable guardrail security device that includes an enclosure having a body with a passageway extending through the body and a locking mechanism to releasably lock the enclosure onto a cable of a cable guardrail over the location of the cable clamps that secure the cable so that the enclosure blocks access to the cable clamps. The security device includes opposing apertures in the enclosure that are designed to receive a shackle of a lock therethrough.

Abstract: A container is disclosed that has a housing and a lid. The lid has a planar portion and a latch that is freely movable parallel to the planar portion of the lid. The latch has a retention feature and a first reference surface that is perpendicular to the planar portion of the lid. There is a latch mechanism coupled to the housing that has an engagement element configured to engage the retention feature of the latch and a first alignment feature having a first alignment surface. The first alignment feature is configured to laterally displace the latch in a first direction such that the first reference surface aligns with the first alignment surface when the lid is brought together with the housing with the fastener laterally displaced away from the engagement element in a second direction that is opposite to the first direction.

Abstract: A locking mechanism for a door of a storage container includes a bearing plate configured to be coupled to the door. The bearing plate includes (i) a body defining a longitudinally-extending channel and (ii) a first pair of horizontally-aligned apertures formed through the body. The locking mechanism also includes a lockrod configured to be received within the channel of the bearing plate for rotational movement relative to the bearing plate. The lockrod includes a second pair of horizontally-aligned apertures formed therethrough. The locking mechanism also includes a fastener configured to be received through the first and second pairs of apertures in order to prevent rotational movement of the lockrod relative to the bearing plate.

Abstract: Systems (100) and methods (1000) for operating a Security Tag (“ST”). The methods involve rotating a Rotational Clip (“RC”) of ST (132) towards a Housing Base (“HB”) of ST until RC (406) contacts a latch (610) disposed within HB (404), where an article resides between a first pad (602) fixedly coupled to RC and a second pad (604) movably coupled to HB. An angled surface (626) of RC slides against an angled surface (624) of the latch so as to cause compression of a cap spring (614) and a latch spring (612). The cap spring is disposed in HB such that a center axis (818) thereof is perpendicular to a center axis (816) of the latch spring. When the latch becomes aligned with an aperture (628) formed in the rotational clip, the latch travels into the aperture as result from a pushing force applied thereto by the latch spring.

Abstract: An assisted movement device for a door (P) of a vehicle, comprises: a door lock (2) for dosing the door (P), suitable for changing from a locked configuration to an unlocked configuration; activation means (7) suitable for enabling the door lock (2) to pass from the locked configuration to the unlocked configuration thereof; a control latch (3) and a bolt (4) operationally connected for engaging the lock (2) in the locked configuration. The activation means (7) comprises at least one activating element for activating rotation of the control latch (3), so as to pass from the locked configuration to the unlocked configuration of the door lock (2). The device (1) further includes remote control means (8) for activating the activating element.

Abstract: A saddlebag latch device allowing access to an interior space of a saddlebag comprises a shaft member rotatable about an axis. The shaft member comprises a first end portion for positioning at an interior location of a saddlebag lid and a second end portion distal from the first end portion for positioning at an exterior location of the saddlebag lid. The second end portion comprises a handle protrusion and at least one surface configured to engage a handle member such that rotation of the handle member about the axis causes rotation of the shaft member.

Abstract: Latch assembly including a latch arm, having first and second length edges and first and second width edges. The latch arm includes a latch pawl, a pivot connector, and a stabilizing member, positioned in a plane. The latch pawl connected to the first width edge and providing spring force resisting deflection non-parallel to the plane. The pivot connector and stabilizing member formed within an area of the latch arm. The stabilizing member extending distally relative to the second width edge to the pivot connector, and providing spring force resisting deflection parallel to the plane. The component and latch assembly including a component having first and second faces being adjacent and perpendicular. The latch arm rotatably mounted on the second face between latched and unlatched positions. Assembly including an embossment positioned to deflect the latch pawl during latching so the latch arm sits raised upon the embossment in the latched position.

Abstract: In order to provide a biaxial hinge and terminal device which ensure that a first and a second casings can open and close 360 degrees relative to each other, as well as enable a keyboard portion and rubber feet to sink relative to the upper surface of the first casing, from a predetermined opening/closing angle, the biaxial hinge comprises a biaxial hinge portion and an actuating mechanism for actuating operating mechanism(s) working on keyboard and rubber feet. Further, the actuating mechanism comprises a cam part moving in association with the movement of the biaxial hinge portion and together with opening/closing operations of the first and the second casings, and a slide part of which an end contacts with the cam part. The slide part is further provided on the attaching plate attached to the first and the second hinge shafts so as to start moving from a predetermined opening/closing angle.

Abstract: A loading portion applying a load to a movement of an opening/closing unit include an arm portion engaged with the rotating member to cause the rotating member to be rotated according to the movement of the opening/closing unit, the arm portion includes a first arm member that includes a first engagement portion to be engaged with the rotating member and a second arm member that includes a second engagement portion to be engaged with the rotating member, and the first arm member move relatively to the second arm member in conjunction with an opening/closing operation of the opening/closing unit.

Abstract: The present application refers to a closing system for through openings, comprising a quick opening door provided with a vertically moveable flexible panel, running between a pair of vertical guides and being attached by its upper end to a motor driven drum for its actuation, the system having in combination with the quick opening door a fire door mounted with capacity to move between an opening position and closing position, being the quick opening door and the fire door arranged for its alternate actuation.

Abstract: The boarding area (A, B, C) of a transport means (9) is divided into at least two gates (1, 2, 3), the maximum person capacity of which corresponds, respectively, to the maximum capacity of the largest transport means (9) that is accessible via the boarding area (A, B, C). Entrance into the gates (1, 2, 3) is effected via at least one separating device (4) connected with the control system (5) for the purpose of data communication. Entrance into a gate (1, 2, 3) is not possible once the number of persons in the gate (1, 2, 3) specified by the control system (5) for the current boarding operation is reached, or while the persons inside a gate (1, 2, 3) board a transport means. The number of persons in a gate (1, 2, 3) specified for the current boarding operation is determined by the control system (5) in dependence upon the transport demand in subsequent intermediate stations ahead of an end station, provided intermediate stations are present, and of the free capacity of the arriving transport means (9).

Abstract: Disclosed is an open top hopper window with a hopper window and a frame. The frame includes top edge and bottom edges, and left and right sides. The inner part of the right and left sides of the frame has a guide groove located at the bottom of the side, with a hole in the frame located above such guide groove. The joining between the hopper window and the frame uses two bolts at the outer bottom sides of the hopper window sliding into the guide grooves and two arms linking the holes at the frame with two holes at the hopper window wherein the two holes are located at the 35%-40% range of the total length of the hopper window on the outer sides of the hopper window always achieving an equilibrium position which allows positioning the hopper window at different opening angles and positions without effort.

Abstract: An integral plastic true divide light (TDL) window frame to replace wood true divided light window frame and grilles which are composed of individual pieces of wood frames and grilles joined together chemically or mechanically. The integral plastic TDL window frame is preferably of one-piece molded plastic construction with a number of small windows for holding individual panes of insulating glass units (lights, preferably with beveled glass), and consequently the window frame and muntin grilles form an inseparable integrated unit.

Abstract: A wind turbine comprising a tower with an access door is provided. The access door has a door lock and, on its outer side, a baffle plate which extends substantially over the entire surface of the door and has a recess. A doorknob is provided in the region of the recess. An outer side of the baffle plate at least partially projects outwards beyond the door lock.

Abstract: Quick-release control systems for architectural opening coverings and associated control systems and methods for rapidly deploying the coverings to extended positions. In one embodiment coupling assemblies are provided for controllably coupling and decoupling portions of lifting mechanisms in a variety of covering systems, including roller and cellular shade systems. In yet other embodiments, control systems for controlling a plurality of coverings are provided, which may be configured to remotely and simultaneously deploying each of the plurality of coverings to an extended position in response to a trigger signal.

Abstract: A mounting arrangement for a ladder assembly of a machine is provided. The mounting arrangement includes a support member. The support member is connected to a first end of the ladder assembly. The mounting arrangement also includes a mounting member. The mounting member is adapted to connect the support member and the frame of a machine. The mounting arrangement further includes a hinge member. The hinge member is disposed between the support member and the mounting member. The mounting arrangement includes a first latch assembly, The first latch assembly is adapted to hold the ladder assembly in the displaced position. The mounting arrangement also includes a second latch assembly. The second latch assembly is adapted to couple the ladder assembly with the first beam associated with frame of the machine. The second latch assembly includes a second mounting bracket. The second mounting bracket is coupled to the first beam.

Abstract: A ladder tool is disclosed and is useful for supporting tools safely, including tools with hoses or cords attached to them. Disclosed embodiments include a support for inserting into a hollow ladder rung, and a tool holder attached to the support structure. The tool holder has an incomplete polygonal shape and provides an opening for the hose or cord to enter and exit the tool holder, so that the operation of passing the hose or cord through the opening can be performed with one hand. The disclosure also includes a support extension that passes clear through the hollow rung of a ladder has a safety tab that rotates down by gravity to prevent the ladder tool from accidently being pulled out or displaced from the ladder rung.

Abstract: A ladder stabilizer for safely and efficiently stabilizing a ladder against a surface. The ladder stabilizer generally includes a base having a pair of angularly-disposed support brackets positioned on its front end. Each of the support brackets includes a tubular support receiver having a support opening adapted to receive a corresponding support. Each of the supports generally comprises angled L-shaped structures. Connector bolts aid in securing the base to a ladder rung. Pin receivers on each of the support receivers allow the use of pop pins to selectively lock the supports between a first retracted position for transport and a second extended position for usage.

Abstract: The disclosure relates to a rotation unit, rock drilling unit and method for rock drilling. The rotation unit includes a main shaft that is rotated around its longitudinal axis by a rotating motor. The main shaft includes a tubular outer shaft and an inner shaft arranged inside the outer shaft. The outer shaft is supported by a body of the rotation unit and is configured to transmit axial forces, whereas the inner shaft is configured to transmit rotation and torque.

Abstract: An improved turbine or motor, such as a fluid or liquid driven turbine or motor or hydraulic turbine or motor including a downhole turbine for the oil/gas and geothermal industries, such as a drilling turbine or downhole drilling turbine. The turbine or motor provides a fluid passage comprising at least one portion or zone arranged to cause a drive fluid to be moved or diverted, such as at least partly radially. The turbine or motor may comprise a rotor having a rotor blade extending within the fluid passage. The turbine or motor may comprise a stator having a stator blade extending within the fluid passage. The stator (30) may comprise or define at least part of the at least one portion or zone configured or arranged to cause the fluid to be moved in or diverted from an at least part axial path to an at least part radial path or radially inward path.

Abstract: A method for optimizing deposit production in a well includes localizing the low resistivity fluid deposits in a geological formation. Once the deposits are mapped, production of the fluid deposit from the geological formation is optimized based on the localizing. The optimization may include adjustment of at least one of a drilling parameter or a production parameter.

Abstract: A steering assembly includes a housing having a longitudinal axis, a mandrel having a front connecting extremity and a rear connecting extremity, the mandrel passing through the housing and arranged in a first position coaxially to the longitudinal axis of the housing, a deflector device configured to exert a side force on the mandrel to offset the front connecting extremity of the mandrel from the longitudinal axis, and a tool face assembly configured to rotate the front connecting extremity of the mandrel in a desired direction.

Abstract: An underreamer for increasing a diameter of a wellbore. The underreamer includes a body having an axial bore extending at least partially therethrough. A sleeve is arranged and designed to move a first axial distance within the body. A cutter block is movably coupled to the body. The cutter block is arranged and designed to move at least the first axial distance with respect to the body to contact the sleeve in response to hydraulic pressure in the bore. The cutter block moves from a first outer diameter to a second outer diameter as the cutter block moves the first axial distance.

Abstract: A hollow body composed of an electrically conducting material and extending longitudinally along an axis is connected at one axial end to a connection element composed of an electrically conducting material and extending along the axis. A first thread is provided on the hollow body at the one axial end running about the axis, while a second thread is provided on the connection element running about the axis, so that the second thread is mechanically supported by the first thread. An insulation-material extent between the first thread and the second thread electrically isolates the hollow body from the connection element.

Abstract: An end fitting attachable to an end of a sucker rod includes a generally cylindrical body having a receptacle portion, a coupling portion, and a longitudinal axis. The receptacle portion has a receptacle extending inwardly from an open end surface of the body along the longitudinal axis for receiving the end of the sucker rod therein, with the receptacle having at least one annular cavity. The coupling portion extends from a coupling end surface of the body opposite the open end surface and is configured to connect the end fitting to another component. The coupling portion may further include an area of predictive failure. A diagnostic sensor may be included in a cavity of the end fitting.

Abstract: In accordance to an aspect a connection to attach a first downhole tool to a second downhole tool includes an externally threaded member positioned about the first downhole tool and an internally threaded member disposed with the second downhole tool to threadedly mate with the externally threaded member, wherein threadedly connecting the externally threaded member with the internally threaded member interconnects the first downhole tool and the second downhole tool with a defined tensile force and a compressive force at an interface between a hard shoulder of the first downhole tool and a hard shoulder of the second downhole tool.

Abstract: A coiled tubing injector apparatus for inserting and/or removing coiled tubing from a well head comprising a first injector column and a second injector column forming a central pathway within a frame. The first and second injector columns each comprise an inner and outer band, the outer band containing a plurality of rolling elements for engaging the coiled tubing and the inner band creating drive force to energize the outer band. The inner band further comprises a wear plate designed to sustain the majority of wear for less costly maintenance and repair of injection heads.

Abstract: The invention relates to a drilling vessel (1) comprising a drilling tower (2) and a tubular string support structure (3) for supporting a tubular string in the firing line (4a, 4b) of the drilling tower. The tubular string support structure comprises two parallel rails (11) and two carts (13, 14) supported by those rails. Both carts have a hanger body (14, 15), comprising a central passage (16), for supporting a tubular, and each cart (13, 14) can be moved between a central support position (18) for supporting a tubular in the firing line, and a secondary position (19) adjacent the central support position. When both carts (13, 14) are located in their secondary position (19), 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 method that includes vertically assembling a mast having a height greater than one hundred eighty feet; securing the mast to a rig floor of a land-based drilling rig; securing a racking board adjacent the mast at a height greater than one hundred feet above the rig floor; drilling a wellbore under the rig floor with a drill string; lifting with lifting equipment coupled to the drilling mast, a stand forming a part of the drill string and having a stand length greater than one hundred feet, from a drilling position partially within the wellbore and partially above the rig floor to an in-line position above the wellbore and proximate the racking board; removing the stand from the drill string; and moving the stand, using an automated pipe handling tool, from the in-line position to a racked position so that the stand is accommodated within the racking board.

Abstract: A floor wrench for a drilling rig floor is provided. The wrench can include a tong assembly having upper and lower tongs made up of articulated tong blocks that can move and lock together to enclose and make or break a joint between sections of drilling pipe. Each tong block can include a pair of die ram assemblies wherein each tong can have dies to grip the drilling pipe around its circumference. The tong assembly can be mounted in a frame configured for horizontal and vertical movement to and from the pipe joint. In some embodiments, the wrench can further include a pipe spinner having motorized spinners that can spin the upper pipe to form the joint prior to torqueing the joint together, or for uncoupling the upper pipe after the joint is broken.

Abstract: Disclosed are systems and methods for monitoring drilling fluids in real time. One method includes circulating a drilling fluid into and out of a borehole, generating a first output signal with a first optical computing device arranged near an outlet of the borehole, the first optical computing device having a first integrated computational element configured to optically interact with the drilling fluid, receiving the first output signal with a signal processor communicably coupled to the first optical computing device, determining the concentration of a gas present in the drilling fluid at the outlet of the borehole with the signal processor and generating a resulting output signal, conveying the resulting output signal to one or more peripheral devices, and adjusting one or more drilling or completion parameters in response to the concentration of the gas present in the drilling fluid.

Abstract: A computerized control is used in controlling a choke when drilling a wellbore with a drilling system. The computerized control obtains a measured value of a parameter in the drilling system and controls the parameter in the drilling system using the choke. The computerized control obtains indications of an error between a set point of the parameter and the measured value of the parameter in the drilling system, a flow coefficient character of the choke, and a current position of the choke. Based on these indications, the computerized control then determines a position adjustment for the choke and adjusting the parameter in the drilling system by applying the position adjustment to the choke.

Abstract: A system including a mineral extraction system, including a hanger, and a dual lock system configured to couple the mineral extraction system component to a tubular, wherein the dual lock system comprises an outer lock ring and an inner lock ring.

Abstract: A system and method for boring a hole in rock with a digger derrick; which utilizes a hollow stem auger, a kelly bar, and a core barrel with a top support member with a hole therein for receiving the kelly bar with a detachable central pilot bit thereon which is translatable up and down with respect to the core barrel as the kelly bar and auger are manipulated. The kelly bar is selectively positionable with respect to the auger so as to allow the ability to retract the pilot bit inward into the core barrel and to shorten the separation between the pilot bit and the auger.

Abstract: Disclosed is an impact generation tool used to deliver a large downhole impact force. The impact generator may include a housing having an uphole end and a downhole end and defining a chamber therein between the uphole and downhole ends, a mandrel movably arranged at least partially within the chamber between an engaged configuration and a disengaged configuration, a top sub coupled to the housing at the uphole end and having an upper core extension arranged at least partially therein, the upper core extension being configured to move between a fixed position, whereby the mandrel is maintained in the engaged configuration, and an unfixed position, whereby the mandrel is able to move to the disengaged configuration, and an impact tool coupled to a distal end of the mandrel and being configured to deliver an impact force to a downhole obstruction when the mandrel is moved to the disengaged configuration.

Abstract: A hydraulic jar coupled between opposing first and second portions of a downhole tool string. The hydraulic jar includes a housing comprising a shoulder protruding radially inward from an internal surface of the housing, a shaft disposed within the housing, a piston fixedly positioned about the shaft and fluidly sealed against the shoulder, and a pressure relief device. The housing and the shaft move axially relative to each other and the shoulder axially interposes first and second portions of an annulus formed between the shaft and the housing. The pressure relief device controls fluid flow from the first annulus portion to the second annulus portion based on a pressure of the fluid in the first annulus portion relative to a set pressure of the pressure relief device.