Abstract: Example systems, devices, and methods are described for evaluating the relative leak safety of threaded connections in well tubulars. The method includes evaluating leak risk using a quadratic leak criterion, which is a function of the effective pressure (Pe) and includes three constants: a first constant called the leak path factor (?), a thread modulus (?), and a makeup leak resistance (?). The method in some implementations includes identifying at least three test cases with different ?p expected to leak under certain conditions. The method includes fitting a quadratic expression to a subset of values associated with the leaking test cases, in which the resulting quadratic expression includes values for the three constants.

Abstract: A bracket designed to mount a cable management assembly to a wire basket. The bracket includes a bracket frame and a locking plate. The bracket frame has a base with a first end and a second end, a first sidewall extending from the base, and a second sidewall extending from the base. The first side wall and the second wall each include notches for receiving the wire basket. The locking plate is secured to the bracket frame. The locking plate having a base with a first end and a second end, a first sidewall extending from the base, and a second sidewall extending from the base. A fastener secures the bracket frame and the locking plate to the cable management assembly.

Abstract: A fastener assembly includes a head unit, a fastening part allowing a lower end of the head unit to be coupled thereto, and a fixing part allowing an upper end of the head unit to be inserted thereinto. The head unit includes a head part inserted into an insertion hole of the fixing part, and a guide part configured to be inserted into a longitudinal hole formed in the fastening part and to be in contact with a rear surface of the fastening part, the guide part being configured to be inserted into the longitudinal hole and be rotated such that the head unit is coupled to the fastening part.

Abstract: A device for fastening a light strip to a motor vehicle includes a mounting support and an opening having a first region with a first diameter and a second region arranged so as to be offset in relation to the first region. The second region has a second diameter smaller than the first diameter. The light strip is configured to be mounted on the mounting support in a form-fitting manner. A form-fitting connection between the mounting support and the light strip is established by a T bolt configured to be inserted into the first region and then displaced from the first region into the second region.

Abstract: A fastener and a method of mounting the same in place includes a fitting portion, an engaging portion and a filler portion. The fastener passes through a sliding hole of an object, and then the fitting portion presses against the object, allowing a material of the object to enter or flow into the filler portion, so as to fit the fastener and the object firmly together. The engaging portion is engaged with or removed from another object. Therefore, the fastener and the method can couple together and separate at least two objects repeatedly and rapidly.

Abstract: A set of panels including a first panel with a first main plane and a second panel with a second main plane with a second main surface. The first and second main planes are essentially perpendicular in a locked position. The first and the second panel include a locking device for locking a first edge of the first panel to a second edge of the second panel. The locking device includes an edge groove wherein the edge groove includes a tongue, which is configured to cooperate with a tongue groove of the first panel, in a locked position, for locking the first and the second edges in a first direction which is perpendicular to the first main plane. A first groove surface of the edge groove cooperate with second main surface to lock the first and second panel in a second direction which is perpendicular to the second main plane.

Abstract: A piece of furniture includes: a first and a second resilient section (100A, 100B) mutually displaced from each other forming a gap (G) there between; a cross-member (200) configured to connect with the first section and the second section thereby bridging the gap; and a first and a second joint arrangement (300A, 300B) configured to attach the cross-member to the first and second section, respectively; wherein each of the first and second joint arrangements comprises a pair of: a male part (320) formed by a dowel (321) extending in a longitudinal direction and having a free end (322) facing away from a surface (101A, 101B) of the respective section or away from the surface of the cross-member; and a female part (330) formed by a recess (331) in the surface of the cross-member or in the surface of the respective section, the recess having a recess extent with an insertion portion (332), an intermediate portion (333), and a locking portion (335); wherein as the respective dowel passes a section biasing port

Abstract: A fastener and a method of mounting the same in place includes a fitting portion, an engaging portion and a filler portion. The fastener passes through a sliding hole of an object, and then the fitting portion presses against the object, allowing a material of the object to enter or flow into the filler portion, so as to fit the fastener and the object firmly together. The engaging portion is engaged with or removed from another object. Therefore, the fastener and the method can couple together and separate at least two objects repeatedly and rapidly.

Abstract: A table saw includes a table work surface, main rails supported on opposed sides of the table work surface, and a fence mounted on the main rails so as to be slidable relative to table work surface. The table saw also includes an extension assembly having extension rails that support an extension work surface and connector assemblies that couple the extension rails to the main rails. The main rails together with the extension rails provide a continuous fence contact surface that extends along the entire length of the table top and the extension assembly. The connector assemblies each include a hook that engages with a latch plate, and the hook is assembled with the latch plate via a pivoting action.

Abstract: A multiform combination game apparatus disclosed by the present invention includes at least one base and at least one connecting plate. After a connecting rod provided on each of the four corner outer sides of the connecting plates is caused to pass through a respective connecting hole in the base, locking members are used to fixedly lock and firmly position the connecting plates. Therefore, combinatorial changes in combining the abovementioned members enable assembling a game apparatus of diverse variety.

Abstract: Systems and methods are provided for securing aircraft sidewall. One embodiment comprises a hanger for supporting sections of sidewall for an aircraft. The hanger includes an elongated vertical member that attaches to a frame of the aircraft, and sets of keyholes that are each arranged in a vertical pattern along the member and that are each configured to support a corresponding section of sidewall of the aircraft. Each keyhole includes a receptacle dimensioned to receive a fitting from a section of sidewall, and a slot dimensioned to slidably accept the fitting via the receptacle to secure the fitting in place. The slot size of keyholes in each set varies from one end of the vertical pattern to another end of the vertical pattern.

Abstract: A simple engaging device comprises a locating base with at least a longitudinal hole, and at least a locating stem with an engaging head and a joining part corresponding to the longitudinal hole. Two flat locating parts are oppositely disposed at two lateral sides of the longitudinal hole; each flat locating part has a slant plane, a first slender retaining projection, a step, and a second slender retaining projection; the slant plane makes the joining part easy to be assembled and is capable of tightly guiding the joining part to reach the first slender retaining projection at which the joining part can be retained firmly without loosening, and the step and the second slender retaining projection are capable of engaging with the joining part in case of the engaging head and the joining part being worn out.

Abstract: The present disclosure is directed to hook and chain assemblies, including those suitable for use in food processing environments. The chain passes through a hook body, where it is secured by a retaining pin when under tension or load. The chain can be quickly and easily removed for servicing, cleaning, and sanitation of the hook body.

Abstract: A detachable connecting arrangement for fitting launchable external loads to an aircraft, having a hook-like connecting element fitted to the external load and a holding element fitted to the aircraft for the hook-like connecting element. The hook-like connecting element includes a lower supporting surface and an upper supporting surface. The holding element has a first opposing supporting surface that interacts with the lower supporting surface, and a second, upper opposing supporting surface that interacts with the upper supporting surface. The lower supporting surface and the first opposing supporting surface are designed to support mass forces of the external load directed away from the aircraft, and the upper supporting surface and the upper opposing supporting surface are designed to support mass forces of the external load directed towards the aircraft.

Abstract: A bolt system for attaching workpieces together, in situations where access is denied at the distal surface of a distal workpiece.

Abstract: An alignable coupling assembly embodiment for coupling distal and proximal prosthetic components includes a pair of parallel circular plates rotatably disposed in the circular receptacle of a support plate. The circular plates are configured such that they can be unpressed or a pressed. The unpressed condition allows rotation of the paired plates and the pressed condition prevents such rotation by way of a first friction lock. The paired circular plates further have a rectangular slot into which a longitudinal connector is slidably disposed, and which is subject to a second friction lock that prevents sliding when the connector is pulled distally. Rotational movement of the plates and sliding movement of the connector in the slot cooperate to allow its positioning at any point within an anterior-posterior/lateral medial grid centered on the longitudinal axis of the proximal prosthetic component. A distal pull on the longitudinal connector engages both first and second friction locks.

Abstract: A rod assembly for a device for trenchless rehabilitation of pipelines includes at least two rod sections connectable to one another by a plug connection in a tension-proof manner, with at least a first one of the rod sections having an end formed with a lateral opening, and a second one of the rod sections having an end formed with a crosspiece for insertion in the lateral opening of the first rod section. Those end faces of the lateral opening and the crosspiece which are pressed against one another in response to a tensile load of the rod assembly have an arched configuration.

Abstract: A transportable load carrying platform comprising a base to support a load during transportation. One or a plurality of support frames are positioned towards one or two ends of base and are configured to pivot between three positions. In a first position, the end frames extends upwardly from the base, in a second position the end frames extend outwardly and downwardly from the base and in a third position the end frames are substantially flat and parallel to the base to reduce the overall height of the platform. Pivot means allow the support frames to pivot relative to the base between the various positions. Suitable load transfer means are provided to effectively transfer any applied loading forces from the support frames to the base.

Abstract: A breakaway assembly may be provided. The breakaway assembly may comprise an upper joint connecting a boom tip to a structure (e.g. a plate.) The breakaway assembly may further comprise a first hinge connecting the boom tip to the structure and a second hinge connecting the boom tip to the structure. In addition, the breakaway assembly may comprise a pressure assembly connected to the boom tip and a lower joint connecting the pressure assembly to the structure. When a force is applied to the boom tip (e.g. from either side, fore or aft), the pressure assembly may be configured to oppose the force and one of the first hinge and the second hinge may be configured to release in response to the boom tip rotating.

Abstract: The present invention concerns a joint for assemble of two furniture parts to each other. A first furniture part (1) has a male part (3) for co-operation with a female part (4) of a second furniture part (2). Each of the male and female parts (3, 4) has a number of grooves (5, 6). At assembly the male part (3) is moved along the female part (4) by means of co-operation between the grooves (5, 6) of the male and female part (3, 4), respectively. The co-operating male and female parts (3, 4) have an insertion position and an end position, in which end position the furniture parts (1, 2) are assembled to each other. The grooves (5, 6) of one of the female and male parts (3, 4) are compressed during movement from the insertion position to the end position. The grooves (5, 6) of the pair of co-operating female part (4) and male part (3) are such that the furniture parts (1, 2) are pressed toward each other when the male part (3) is moved along the female part (4).

Abstract: The invention relates to a coupling system for rod segments for use in horizontal earth boring, wherein the ends of the rod segments are interlinked via a separate sacrificial element which can be used as a predetermined breaking point or which allows the rod segments to be pivoted relative each other.

Abstract: A thermal module mount structure including a first mount body and a second mount body. The first mount body defines therein a first passage and has multiple engaging sections inward extending into the first passage. The second mount body is disposed in the first passage and has multiple complementary engaging sections complementary to the engaging sections. Each of the complementary engaging sections has a moving space and multiple engaging splits in communication therewith. The second mount body is vertically displaceable within the first passage, whereby the first and second mount bodies can be relatively rotated to insert the engaging sections into the engaging splits at different heights. Accordingly, the height of the mount structure is changeable by means of adjusting the second mount body in accordance with different heights of radiating fins. Therefore, the mount structure has high commonness so that the cost for developing the molds is reduced.

Abstract: The present invention discloses a display backplane and an LCD device. The display backplane comprises multiple supporting brackets and a connecting slot, wherein, the connecting slot comprises a sliding slot and a protruding platform, and the protruding platform is sliding held in the sliding slot, and at least two of the brackets can rotate relatively about a first rotation axis perpendicular to the plane of the display backplane. After rotation, the display backplane formed by the brackets is smaller in volume such that it can reduce the volume occupied by the packing and shipping during transportation process of the display backplane in order to reduce the packing and shipping cost during transportation process of the display backplane.

Abstract: An outer box connector (OBC) (100) and methods (200 and 250) are shown and described. The OBC (100) can include: a body (102) having an outer surface (104) and an inner surface (106); a first anchor (108) and a second anchor (110) extending inwardly from the inner surface (104); a lever (112) extending substantially outwardly from the outer surface (104), the lever (112) being connected to a distal portion (114) of the first anchor (108); and the first anchor (108) including an unlocked condition (116) adapted for allowing insertion in and removal from a corner fitting (120) and a locked condition (118) for locking the first anchor 108 with a corner fitting (12). Advantageously, the OBC (100) and methods allow simplified container handling and connection and disconnection, in transportation applications.

Abstract: Quick connector assembly. At least some of the illustrative embodiments involve coupling an implement that has a stem member to the distal end of a pole that defines a long axis. The coupling comprising: inserting the stem member that defines a cross-sectional shape into an exposed aperture of a connector where the exposed aperture defines a cross-sectional shape that corresponds to the cross-sectional shape of the stem member; and then locking the implement into the connector such that the both rotational movement of the implement, and movement parallel to the long axis, is restrained, the locking by turning a cam member associated with the connector less than a full rotation.

Abstract: Certain embodiments of a secure container are provided herein that are capable of being removably coupled to a surface.

Abstract: A coupling that includes a housing with a cutout; a cylindric shaft extending transversely to the cutout through aligned openings; a hook having a width which is less than the width of the cutout and which has a receiving opening with a diameter corresponding to the shaft diameter that is received in the opening. An insertion opening is provided that has a width which is less than the shaft diameter and which is oriented at an angle relative to a direction of pull by loading the hook. A part of the shaft that is disposed in the cutout is provided with opposing flats with a mutual spacing which is less than the width of the insertion opening. The shaft is arranged for longitudinal manual displacement against the action of a spring, from a first position where the flats are located outside the cutout to a second position where the flats are in the cutout.

Abstract: A locator/fastener has a first outer member with a precision-machined external body portion, a retention head protruding from a first end, and a multi-diameter throughbore. A fastener, which may take the form of a cap screw, floats in the throughbore of the locator with the threaded portion protruding from a second end of the locator. A receiver has an internal precision-machined surface which contacts the precision-machined body portion of the locator and a threaded bore which receives the protruding fastener. By separating the locating and fastening functions, a quick connect disconnect device is created which does not bind or gall. A hangar system allows a sub-base plate to be attached to a base using the locator-fastener disclosed herein.

Abstract: There is disclosed an improved support bracket for mounting a clutch of a roller blind. The clutch of roller blind used with this improved bracket is the type having at least one projecting pin. The support bracket includes a bracket housing having a flat wall with at least one aperture configured to receive the projecting pin such that the pin passes through the aperture and extends past the flat wall. The aperture is configured to permit the pin to slide up and down inside the aperture between a first and second position when the pin is positioned in the aperture. The bracket also includes a spring lock member mounted to the flat wall adjacent the aperture, the spring lock positioned to partially obstruct the aperture. The spring lock member is configured such that when the pin is inserted into the aperture the spring lock is deflected out of the way to permit the pin to be inserted into the aperture.

Abstract: A device is described that allows for the insertion and removal of a Transmission Electron Microscope (TEM) specimen stage and insertion rod into and out of a vacuum chamber. The device can be configured to accommodate specimen stage and insertion rods manufactured by all TEM producers. The device has a side-entry slot for accepting the cylindrical stage rod and a locking mechanism, such that unwanted contact with the specimen and the specimen stage itself is avoided during entry and exit from the plasma vacuum chamber. The devices hold said specimen stage and insertion rod in position during the process of plasma cleaning in a vacuum chamber.

Abstract: A kind of furniture connecting piece includes a base and a screw. The base has opposite upper surface and lower surface, opposite two side surfaces, and opposite front surface and back surface. The lower surface of the base is provided with a gapped groove extending to the upper surface of the base, and the gapped groove runs through the front surface and the back surface of the base. The upper surface of the base is provided with a screw hole communicating with the gapped groove. The screw passes through the screw hole and is partially contained within the gapped groove. The furniture connecting piece not only avoids suffering damage in the process of mounting the screw but also strengthens the installation intensity between the furniture connecting piece and the furniture component by setting the gapped groove in the screw hole.

Abstract: A method and apparatus for processing underwater beds includes a plurality of polygonal hollow pipes arranged side by side, the upper ends of which form a horizontal, substantially flat working platform. Each hollow pipe has a horizontal projection with a flange extending vertically and a corresponding flange insertion aperture with a slot immediately above it running vertically and extending as far as the upper end of the hollow pipe, the aperture being further away from the upper end of the hollow pipe than the projection with the flange and having a greater horizontal dimension than the slot. Neighboring hollow pipes engage one another via a respective projection with a corresponding slot. The hollow pipes cannot be moved relative to one another horizontally. Individual pipes can only be pulled out individually in an upward direction at the platform outer edge.

Abstract: A connector comprising a container-like fastener holder (4) of finite depth with a front (6) and a rear plate and side walls (8) wherein the rear wall and substantially the whole depth of the holder can be cast into a concrete structure to form a space within the concrete structure, fastening means (12) which can assume a range of positions within the holder (4) and a move able connection part (16) or device which can be fastened to the front plate (6) by the fastening means (12).

Abstract: An assembly includes a board, a heat sink, one or more retainers, and/or one or more light-emitting diode packages. The board includes a face surface, a rear surface opposite the face surface, and side edges. The one or more retainers are configured to secure the board to the heat sink. One or more light-emitting diode packages can be secured to the board for creating a light-emitting device assembly.

Abstract: A fan mounting apparatus includes a case and a fan. The case includes a bottom plate and a rear plate substantially perpendicular to the bottom plate. A clipping member extends to an interior of the rear plate in a first direction. The fan includes a sidewall with a securing portion. An extending direction of the securing portion is substantially perpendicular to the first direction. The securing portion includes a protruding surface. The securing portion is engaged with the clipping member, and the protruding surface abuts the clipping member.

Abstract: A two-piece connector for connecting two pieces of corrugated material. A first connector piece configured to connect to a first piece of corrugated material includes a flange connected to a first connecting mechanism. A second connector piece configured to connect to a second piece of corrugated material includes a second connecting mechanism configured to cooperate with the first connecting mechanism of the first connector piece.

Abstract: A clamping assembly for clamping a first component in the form of a bearing race to a second component in the form of a shaft, which in use is clamped coaxially with the bearing race. The clamping assembly includes a first member in the form of a first ring having a retaining formation in the form of a thread for retaining the first ring to the shaft, a second member in the form of a segmented second ring, a third member in the form of a third segmented ring, a spacer ring and a locking ring. Each of the segments of the second ring and third ring are pivotable or rollable relative to one another.

Abstract: A connector assembly is used to connect subassemblies such as parts of a knockdown or modular sofa or similar item of furniture. The furniture item can be an upholstered item in which the multiple components are stackable into a volume that is smaller than the assembled item of furniture for shipping. The connector assembly includes a keyhole slot on a frame member in one component and a male connector assembly on a frame member in the other assembly. The male connector includes a sleeve with a cylindrical shank and an adjacent enlarged or conical portion, and the sleeve, which may be plastic, is mounted the bolt. The narrow section of the keyhole slot has a beveled surface and as the sleeve progresses into the narrow section, engagement of the conical sleeve section with the beveled slot surface tightens the two members being attached.

Abstract: A connection system for connecting external devices to specified locations on a marine seismic streamer. Inner collars having raised bosses are clamped to the cable at specified locations along its length. Each inner collar forms a circular race encircling the cable. An external device is attached to a pair of cuffs in the form of C-shaped cylindrical rings each with a circular inner surface. A gap in the ring interrupts the inner surface. The width of the gap is greater than the diameter of the bosses so that the cuffs may be slid onto the collars when the gaps are aligned with the bosses. The bosses are circumferentially offset when the cable is in its normal operating state to lock the cuff and the external device to the collars. The cuffs and the external device can be installed on or removed from the cable by twisting the cable to align the bosses and sliding the cuffs onto or off of the collars. When installed, the cuffs ride on the races to allow the cable to rotate inside the cuffs.

Abstract: The invention relates to a rod coupling for rod segments for use in horizontal earth boring, wherein the ends of the rod segments can be interconnected and are fixed by means of a cross pin.

Abstract: A part clamp is temporarily held in a short cylindrical portion provided on a contact arm of a nailing machine and is nailed to a building body or the like by the nailing machine. The part clamp is provided with a base portion having a through hole at its center for inserting a nail therethrough, and an engaging portions for engaging with the short cylindrical portion. When the part clamp is pushed in the axial direction of an injection port of the nailing machine, the part clamp is temporarily held in the short cylindrical portion. The load to push the part clamp to engage with the short cylindrical portion is lower than the load to push the contact arm to slide along the injection port.

Abstract: A chassis 2 as a first sheet-metal part has an L-shaped hooking section 27 formed at a cover mounting opening end of each side plate thereof, and an assembly guide section 28 dimpling inwardly the opening end of the chassis 2 by the thickness of a cover 8; the cover 8 as a second sheet-metal part has a hooking claw 81 extending from each side edge of the cover to the mounting side thereof and engaging with the L-shaped hooking section 27, and a guide lug 82 engaging with the assembly guide section 28, wherein an engaging claw 85 and an engaging hole 102, and a tapped hole 101 and a screw passing-through hole 84 are relatively provided on the abutment faces between the chassis 2 and the cover 8, respectively.

Abstract: Metal profile (230,280) as well as with the metal profile cooperating fastening device (800,830,860), wherein the two-dimensional cross-section of the metal profile, perpendicularly to the length of the profile, includes a screw pocket (233). The screw pocket includes a hole (234), arranged to accommodate a screw which is inserted perpendicularly to the cross-section, as well as an opening (235) out from the hole, which opening is narrower than the cross-sectional dimension of the hole perpendicularly to the main direction of extension (M) of the opening, and in that the screw pocket is arranged to accommodate, and therefore to engage with, the fastening device, which fastening device can be inserted into the screw pocket perpendicularly to the cross-section and thereafter be slid in the screw pocket along the metal profile.

Abstract: A hinge having a plurality of movable axes enabling eccentric movement of an object connected to the hinge, and a connection member with a first hinge axis for enabling a first object to rotate about the first hinge axis, the connection member including a plurality of movable axes enabling eccentric movement of the object. The plurality of movable axes includes a central axis, a second hinge axis and a third hinge axis, and when the hinge or connection member moves with respect to the second hinge axis and the third hinge axis, the central axis moves. The hinge or connection member can be used in a portable terminal having a main body housing, where the folder rotates with respect to the first hinge axis towards or away from the main body housing, and the folder can rotate with respect to the first hinge axis.

Abstract: Asymmetrical joint systems, structures having interlocking joints, methods of fabricating asymmetric joint systems and methods for fabricating structures having interlocking joints. In a preferred embodiment, the invention a joint system comprising an asymmetrical mortise into which an asymmetrical tenon fits. In another preferred embodiment, the invention is a quadrilateral structure that incorporates a diamond-shaped bracing system. In another preferred embodiment, the invention is a quadrilateral structure that incorporates a rotational lockdown component.

Abstract: An assembly for supporting an item has a housing (11) has a first surface (23), a second surface (25) opposite to the first surface, and a periphery (27) between the first and second surface. An opening (33) is provided in the first surface of the housing and a cavity (35) extends inwardly from the opening. At least one engagement surface (43) is present in the cavity and positioned toward the second surface, and configured to provide a first region of support. A support component (7) for supporting the item is configured to engage with the engagement surface(s) (43) of the housing with a portion of the support component extending from the opening (33) of the housing and supported by a second region of support at or toward the fkst surface of the housing, to support the item. A base unit and support component are also provided.

Abstract: An electrode assembly for a plasma reaction chamber used in semiconductor substrate processing. The assembly includes an upper showerhead electrode which is mechanically attached to a backing plate by a series of spaced apart cam locks. A guard ring surrounds the backing plate and is movable to positions at which openings in the guard ring align with openings in the backing plate so that the cam locks can be rotated with a tool to release locking pins extending from the upper face of the electrode.

Abstract: A blow-molded plastic female interconnection system has a receiving section and a locking section. The receiving section receives a male interconnect. The receiving section has a floor aperture shaped to allow the corresponding male interconnect be pushed into the locking section. The floor aperture can have various shapes depending on the shape of the male interconnect. Within the receiving section is a locking projection on the receiving section's back wall and the locking projection has a bottom section that defines a portion of the ceiling of the locking section which has no back wall. When the male interconnect is being pushed into the locking section, the locking projection deforms due to the locking sections no back wall. When the male interconnect is below the locking projection, the locking projection bottom section is positioned on the male interconnect to securely interconnect the male and female units.

Abstract: The present invention relates to a connection device for connecting, in particular coupling, at least one external functional device to an arrangement by pressing the external functional device. The connection device comprises at least one reception device having at least one first contact portion. It further comprises at least one pressing device which is configured for transferring at least the first contact portion from a first position into the second position by applying a first force (F1) and a second force (F2). The two forces (F1) and (F2) are of a different magnitude. The present invention further relates to an arrangement comprising such a connection device.

Abstract: A set (10), including a first component (12) having one or more stub portions (16) extending from the first component (12), the one or more stub portions (16) being formed with at least one set of radially extending teeth (22) separated circumferentially by troughs (24), and a second component (14) having a socket portion shaped to receive one of the stub portions (16), wherein peripherally spaced formations (30) are provided on an interior surface of the socket portion. The stub portion (16) is able to be received within the socket of the second component (14) by aligning the teeth (22) of the stub portion (16) between the formations (30) of the socket, and wherein the stub portion and socket are thereafter connected by relatively rotating the first (12) or second components (14) such that the teeth (22) of the stub portion engage the formations (30) of the socket to couple the first and second components together.