Abstract: A framing system includes a corner bracket having a first planar portion and a second planar portion. The first planar portion and the second planar portion are configured to at least partially receive a corner post therebetween. The corner bracket also includes a first attachment portion and a second attachment portion. The first attachment portion is attachable to a first joist of a deck. The second attachment portion is attachable to a second joist of the deck. The framing system also includes a corner profile attachable to the corner bracket and the corner post. The framing system further includes at least one horizontal profile attachable to the corner profile. The framing system also includes at least one panel attachable to the corner profile.

Abstract: A self-adjusting bracket assembly includes a bracket, a clip housing, and a clip. The clip housing is supported by the bracket and includes an anterior side opening, a superior side opening, and a cavity in communication with the anterior and superior side openings. The cavity includes at least one housing ramp surface and at least one housing support surface. The at least one housing ramp surface extends at an angle relative to the at least one housing support surface. The clip is received within the cavity and is configured to move within the cavity from an uninstalled position to an installed position.

Abstract: A portable support for supporting equipment above a surface having an opening to a subsurface space. The support includes a head, an elevator on the head, and legs connected to the head for supporting the head above the surface. Each of the legs has a foot for engaging the surface when supporting the head above the surface. The support also includes an elongate rod vertically mounted on the elevator for movement between a raised position, in which an upper end of the rod extends above the head, and a lowered position, in which a lower end of the rod extends below the feet of the legs to extend into the subsurface space. The support includes an instrument platform positionable on the lower end of the rod when in the lowered position to support the equipment in the subsurface space when the rod is in the lowered position.

Abstract: Provided herein are connectors for use in assembling reinforced concrete structures, as well as methods of assembly using the connectors. In one embodiment, the connectors and methods provide for secure and easy connection to the butt end of any rebar rod, as well as attachment of an opposite end to another metal structure. For example, a butt portion of a connector slides over the butt portion of a rebar rod, and can include one or more sidewall openings to allow welding onto rebar that is enclosed within the butt portion of the connector. The opposite second end can include a faceplate for attaching a weld plate, thus permitting a series of connections using connectors and weld plates, among other things. The connectors provide selected properties that differ from the rebar, welds, and weld plates, such as stretch, yield strength, ultimate strength, and transfer of stress and vibration, among other things.

Abstract: Disclosed is an assembled connector configuration for a modular rack used for receiving a plane object. It comprises a fan-shaped receiving portion and a joinder, the receiving portion has at least one holes. The joinder is a column having a first and a second columnar opening, the opening diameter of the first columnar opening is smaller than that of the second columnar opening. The joinder can be lassoed around at least a post of a modular rack, and can be locked by a set of circular plates into a fixed position at an appropriate location on the post; the receiving portion is placed at one of the four corners of a rectangular plane object. The rectangular plane object is placed at the receiving portion before locked into a fixed location by a fastening member, in order to be secured on the rectangular plane object, to establish a modular rack connector.

Abstract: The present invention is related to a fixed structure for faucets and bathroom accessories, which at least includes a base and an external part, wherein the bottom side of the base is fixed on a connected body and the base has a hollow chamber in the body, at least a functional hole is set on the circumference of the body, an elastic piece is extended inwards from a part of circumference of the functional hole, a convex column is set on the end of the elastic piece; the external part has a hollow chamber set on the bottom side for placing the body of the base, and at least a slipping hole set on the circumference of the hollow chamber is provided for the convex column of the elastic piece to buckle into for positioning, to thereby achieve the purpose of quickly assembly and conveniently installing and operating.

Abstract: An adjustable connector includes a main body portion and a locking connector to removably engage a top portion of the main body, allowing a shelf to be connected to a support anywhere along the support. A shelving system using the adjustable connector, supports, and a shelf having engaging members for connecting to the adjustable connector is presented.

Abstract: A support structure for elevating a building surface above a fixed surface and having stability bracing to provide increased stability to the elevated building surface assembly. The support structure includes a plurality of support pedestals that are disposed in spaced-apart relation on a fixed surface. Stabilizing braces are attached to the central section of adjacent support pedestals to interconnect the support pedestals. The stabilizing braces may attach to the support pedestals using anchoring members that are anchored to the support pedestals. Interconnecting the support pedestals in such a manner creates a stable elevated building surface assembly that can be utilized in unstable environments, such as seismically active geographic areas. The support pedestals can be adjustable-height support pedestals.

Abstract: An adapter for releasably gripping the end of a long-handled tool handle. The adapter including a plurality of grippers threadably mounted around a tubular body. An engagement plug having both male and female threaded ends is removable secured to the end of the tubular body for engaging a tool's work head.

Abstract: A joint and method for connecting elongated members end to end in which outer sleeves are anchored in blind holes extending in from each end face and a threaded rod is advanced into threaded nut receptacles affixed to the inside end of each sleeve to draw the end faces into abutment.

Abstract: A bearing device for coupling a position indication device to an apparatus for measuring a position of the apparatus is described. The apparatus includes a first connecting member. The bearing device includes a bearing housing including a first opening defined therein configured to receive the first connecting member and a second opening defined therein configured to receive at least a portion of the position indication device. The bearing device also includes a grommet configured for positioning within the first opening and for positioning around the first connecting member.

Abstract: The invention relates to a profile bar connection system (10) for connecting at least two profile bars (12, 14) extending approximately perpendicular to each other, having first and second clamp halves (16, 18) that can be connected to each other at the first ends (16a, 18a) and second ends (16b, 18b) thereof, and having a clamping device (20) that can be connected to the first and second clamp halves placed about the first profile bar (12) and holding the second profile bar. In order to produce a profile bar connection system so that the assembly thereof can be performed substantially more simply and safely, said system is implemented such that the first ends (16a, 18a) are interlocked with each other, and the second ends (16b, 18b) are connected to each other by means of the clamping device (20).

Abstract: A rod to rod connector includes a connector body containing a rod retaining insert. An interconnecting portion inner connects to a body to at least one other connector body. The insert is snap locked within the connector body simultaneously while retaining a rod within the insert in a locked condition.

Abstract: A connector and method for joining one end of a first wood member such as a wood log or beam to a side of a second wood member involving metal sleeves secured in aligned holes in a respective member with a protruding one of the sleeve slidable into the other sleeve. A bolt is threaded into an internally threaded element on the inner end of the sleeve in the first member and advanced to pull the members together. The sleeves are secured in the holes with spike features driven out into the surrounding wood. Alternatively, a tee connector has a plate portion fitting into a slot extending through aligned holes in the plate and one end of the first member. A cross plate is held against the one side of the other member with thread fasteners.

Abstract: A construction panel includes a compressible construction sheet having opposed first and second sides. A first tubing has a plurality of longitudinally spaced aligned openings disposed at the first side. A second tubing is disposed at the second side in general alignment with the first tubing. A plurality of compression pin fasteners connects the first and second tubings. Each of the fasteners has a head which engages the first tubing. An unthreaded portion extends from the head to a threaded portion having a self-tapping drill point. The threaded portion has a buttress thread which engages the second tubing to exert a compressive force between the two tubings. An annular rock ring on the fastener is positionable such that the interior panel of the second tubing is disposed between the ring and the threaded portion.

Abstract: An apparatus for connecting a steering column control module to a steering column of a vehicle comprises a bracket for mounting the steering column control module and a collet for interconnecting the bracket and the steering column. The collet snaps into engagement with the bracket and with the steering column. One of the bracket and the collet includes a first projection and the other of the bracket and the collet including a recess for receiving the first projection. The recess includes a second projection for engagement with the first projection when the first projection is received in the recess.

Abstract: A method of constructing a masonry infill in a load bearing structure comprises the steps of: laying one or more courses of masonry (7) in the infill space; partitioning off a casting space having as its base the then uppermost course of masonry (22); the casting space extending from one side of the infill space to the other; positioning reinforcing material (14) in the casting space; securing an end of the reinforcing material to the load bearing structure; filling the casting space with concrete (20), and laying one or more further courses of masonry on top of the filled casting space. The reinforced concrete forms a bond beam which strengthens the masonry. The reinforcing material may be rebar, secured to a load-bearing frame of the building by a cleat (16) having pockets (12) for reception of the rebar ends. Optionally the reinforcement may be tensioned, to pre-stress the bond beam.

Abstract: A coupling element for connecting a housing or a support arm system element with a support arm. The coupling element has a hollow cylinder-shaped receiving element fixed in place on the housing or the support arm system element for receiving and fixing in place the support arm in the axial direction. So that the coupling element can meet the requirements made on its employment in the field connected with health, the receiving element is covered by a cup-shaped cover which has a central through-opening for passing the support arm through and which has an edge area circumferentially supported on the receiving element. The through-opening is sealed against the exterior circumferential face of the support arm, and the edge area of the cover is sealed against the receiving element.

Abstract: A mounting device is provided for attaching an element with a spherical connection portion to a tubular member forming part of a tool carrying structure. The mounting device includes a support member with a part-cylindrical inner surface for contact with a tubular member and has two parallel radially extending wall portions which form between them a radially extending opening and guide way for a clamping block. The guide way is of a rectangular shape and has the same width as the diameter of the tubular member for sidewise entry of the support member onto the tubular member.

Abstract: The invention relates to a tray plug that includes a base portion; a plurality of towers extending upwardly away from the base portion; a secondary base portion contiguous with the underside of the base portion; and a means for securing the plug to a display structure, whereby the tray plug can be quickly secured and subsequently removed from a display such as a point-of-purchase display.

Abstract: A fence rail clip for attaching a fence rail to a vertical fence. The rail clip has a base with a raised central area flanked by two lateral areas and a rail connector that, vertically or horizontally, slidingly engages the central area of the base. The lateral areas include apertures through which fasteners are inserted to connect the clip to the fence post. A cover snap-fits over each lateral area to hide the fasteners and give the rail clip a clean and aesthetically pleasing appearance.

Abstract: A ceramic spindle coupling structure includes a metal bushing which has a housing space that has an inlet and a tapered fastening section of a smaller diameter than the inlet to form a tight coupling with a ceramic spindle without embossing the ceramic spindle and the metal bushing.

Abstract: A system for constructing log structures includes a corner connection structure, a through-bolt clamping apparatus, an opening support structure, a butt joint connection structure, a log profile, and an exterior casing structure. The corner connection structure has logs with overlap portions shaped so that the overlap portions of the logs of a first wall overlap and alternately interlace the overlap portions of the logs of a second wall. A generally vertical slot extends through the overlap portions of the logs, and at least one spline is provided in the slot. The through-bolt clamping apparatus has a through-bolt extending along the height of the wall, a lower clamp arm coupled to the through-bolt and the bottom of the intersecting walls, and an upper clamp arm coupled to the through bolt and the top of the intersecting walls.

Abstract: The connection system is for connecting structural elements of pieces of furniture, which structural elements include a plurality of support posts and a plurality of bars which are fastened to corresponding posts in accordance with predetermined geometrical configurations, to build a support structure for the above mentioned pieces of furniture. The connection system includes, for each post, a tube fastened to an end of the post, a plurality of connection annular elements for each connection between the bars and the posts, each one of the annular elements delimiting a hollow space provided for the coaxial coupling with a corresponding tube; and fasteners for fastening each bar to at least one connection annular element. The fasteners, in particular, include a side protrusion, for instance shaped like a dovetail, and a couple of mobile fastening clamps situated at the ends of the bar and designed for clamping the side protrusion for making a stable connection between the bar and the post.

Abstract: A steering column rotary tilt locking mechanism. The mechanism includes a rod pivotally interconnecting upper and lower column members and a sleeve supported about the rod. The rod and sleeve have selectively engageable surfaces. The sleeve has opposed slots with one end of each slot having axis offset from the other slot. Upon rotation of the sleeve, the sleeve moves out of perpendicularity relative to the shaft such that the slots bind against the shaft and the sleeve moves off center relative to the rod and binds thereagainst.

Abstract: A bracket for supporting an elongated rail with respect to a post includes a bracket body with a rail supporting portion and an attachment portion. The rail supporting portion has an opening defined therein for receiving the end of the rail when the bracket body is installed. The opening has a central axis. The attachment portion has a first surface and a second surface spaced therefrom. A fastener receiving passage is defined from the first surface to the second surface. The passage is formed by a first bore extending from the first surface part way to the second surface and a second bore extending part way from the second surface to the first surface. The first and second bores interconnect to find the passage. The central axis of the first and second bores are each generally parallel to the central axis in the opening. The axis of the first and second bores are offset with respect to one another by a distance greater than half the difference in their widths.

Abstract: The coupling assembly connects at least first and second members of a structure. The first member has at least a first end with an outer surface, and at least one attachment means is located on the first end of the first member. A collar has at least one attachment means for engaging the at least one attachment means on the first end of the first member, the collar being located on the outer surface of the first end of the first member. A cap surrounds at least the collar on the first end of the first member, the cap having a first end oriented toward the first end of the first member and a second end opposed from the first end. The cap has a lip on the second end, the lip being structured to engage the collar to thereby prevent removal of the cap off the first end. The cap has first connecting means at least on the first end of the cap. A base has a first end connected to the second member, and has a second end, opposed from the first end.

Abstract: This invention relates to a joining system (1) for fixedly joining at least two elements (2, 3), in particular girders, comprising at least one first element (2) which is adjacent at one of its ends to the other element (3) on a contact surface (14) and is attached to this element with a joining means (11) and at least one connecting part (7), in particular a shear connector made of a high-strength material, preferably metal, which is connected to one of the elements (2), in particular by being integrated into it. To permit an improved possibility for fastening the two elements, it is provided according to this invention that the connecting part (7), in particular the shear connector, is provided with a continuous recess (9), in particular with a borehole, and the joining means (11) extends through the recess (9), whereby the element (2) receiving the connecting part (7) is designed as a wooden component.

Abstract: A connector device for forming a structural inter-connection between two members, such as an inclined hand rail and a vertical support post, and which permits variation of the angle of inter-connection includes a body portion having a bore defining a housing to receive one of two members to be inter-connected and a stem portion of substantially cylindrical form having a major axis disposed substantially perpendicular to the major axis of the bore defined by the body portion, the stem portion being adapted to be received, in use, in a housing defined by a bore of a second of the two members to be inter-connected by the connector device, and the stem portion comprising in the outer surface thereof an annular groove having the major axis thereof coincident with the major axis of the stem portion and the annular groove being provided axially inwards from the distal end of the stem portion.

Abstract: A connector includes first and second engagable components for mounting on an implement and a handle. The first component has a boss formed with an internal socket and an outer peripheral surface surrounding the socket, and the second component includes an insert member, a sleeve member which is independent of the insert member, and parts for interengaging the insert and sleeve members when the insert member is received in the sleeve member. The insert member has an insert portion engagable within an opening in the end of the handle and a spigot portion adapted to fit within the internal socket of the boss. The sleeve member has a first portion engagable with the external surface of the end of the handle, and a second portion engagable with the outer peripheral surface of the first component.

Abstract: An adapter provides for mounting an object on plastic. The adapter comprises a body coupled with at least two feet. The feet are weldable to the surface of the plastic while the plastic is in a molten state. The adapter also includes a coupling mechanism coupled with the body. The coupling mechanism is operable to couple the object with the adapter.

Abstract: The coupling assembly connects at least first and second members of a structure. The first member has at least a first end with an outer surface, and at least one attachment means is located on the first end of the first member. A collar has at least one attachment means for engaging the at least one attachment means on the first end of the first member, the collar being located on the outer surface of the first end of the first member. A cap surrounds at least the collar on the first end of the first member, the cap having a first end oriented toward the first end of the first member and a second end opposed from the first end. The cap has a lip on the second end, the lip being structured to engage the collar to thereby prevent removal of the cap off the first end. The cap has first connecting means at least on the first end of the cap. A base has a first end connected to the second member, and has a second end, opposed from the first end.

Abstract: A locating plate for locating a first piece of rotary machinery relative to a second piece of rotary machinery is provided. The plate has a first periphery surface for mating with a first receiving surface of the first piece of rotary machinery and a second periphery surface for mating with a second receiving surface of the second piece of rotary machinery. The plate also has at least one attaching device for use in attaching the plate to the first piece of rotary machinery and at least one removal device for use in removing the plate from the first piece of rotary machinery. The plate is removably attachable to the second piece of rotary machinery, and the second periphery surface is sizable independently from the first periphery surface.

Abstract: A connecting element, particularly for connecting rear forks, also known as monostays, made of carbon to bicycle frames. The connecting element is constituted by a first insert and a second insert which are mutually detachably associable at a first end by way of mechanical connection element. The first and second inserts are respectively associated, at a second end, advantageously by way of adhesives, with the stem of a carbon monostay, and are associable with, or rigidly coupled to, a tubular extension of the frame.

Abstract: For clamping one end of a first, cylindrical strut to a second, cylindrical strut crossing the end of the first strut, a clamp comprising two clamping members, each having a first portion adapted to fit one half of the end of the first strut and a second portion unitary with its first portion and adapted to fit one half of the second strut. Each clamping member has a reinforcing rib extending along its first clamping portion and extending onto its second clamping portion. Embossments of the reinforcing rib of each clamping member define margins of fastener-receiving apertures, which receive fasteners drawing the respective members tightly around the respective struts.

Abstract: An apparatus and method for adding a velocity transducer to an electric motor, such as an elevator drive motor, includes mounting a shaft extension on an end surface of a motor shaft by drilling and tapping a bore at the shaft center as parallel as possible. A fastener with a bevel washer between a pair of flat washers attaches the extension to the motor shaft. With the fastener assembly snug, the extension is trued radially with a dial indicator. The bevel washer functions as a spring lock and distributes any off center clamping force produced from non-concentric hole drilling. A shoulder on the extension abuts the motor shaft end surface to maintain parallelism of the longitudinal axes of the shaft extension and the motor shaft. The shaft extension can be formed of an electrically nonconductive material to isolate the transducer from the drive equipment.

Abstract: A bracket for attaching a rail to a post. The bracket comprises a means for attaching said bracket to a post and means to provide said bracket with added support. Preferably, the bracket is bread shaped to fit a specific rail style well-known in the art. The bracket further comprises flanges to allow the bracket to be fastened to upright posts. The flanges are adapted to provide against vertical movement and against lateral movement through their opposing locations and their angled surface. Additionally, the bracket comprises an extended base to provide increased strength in response to force exerted on the attached rail.

Abstract: A connector device for forming a structural inter-connection between two members, such as an inclined hand rail and a vertical support post, and which permits variation of the angle of inter-connection comprises a body portion having a bore defining a housing to receive one of two members to be inter-connected and a stem portion of substantially cylindrical form having a major axis disposed substantially perpendicular to the major axis of said bore defined by the body portion, said stem portion being adapted to be received, in use, in a housing defined by a bore of a second of the two members to be inter-connected by the connector device, and said stem portion comprising in the outer surface thereof an annular groove having the major axis thereof coincident with the major axis of the stem portion and said annular groove being provided axially inwards from the distal end of the stem portion.

Abstract: A connection is created between a first member and a second member. The connector used to join the first and second members includes the following members: an attachment member, a plurality of fasteners that are received by the attachment member, and an anchor member that is also received by the attachment member. These members can be arranged in the following manner with respect to the first and second members. The fasteners are received by the attachment member and anchored in the second member. The fasteners are driven into the second member through the attachment member, thus the heads of the fasteners are closer to the attachment member than the leading tips of the fasteners. At least one of the fasteners lies at an angle to a longitudinal axis of the second member.

Abstract: A railing system suitable for decks, stairs, porches and other structures uses a collar connector applied over the open end of a tabular rail for securing the rail to a support surface. The connector has an exterior collar into which the open end of a railing is inserted. The railing is also engaged on the interior of the railing by an inserted plug. The railing is trapped between the inserted plug and the collar whereby a tight connection is achieved. The gap between the inserted plug and the exterior collar narrows from the open end of the collar towards the base.

Abstract: A failsafe weld-free method of joining tubular elements provides for connecting a first tubular element to a second tubular element. The assembly includes an insert, with screw threads, inside of the first tube, a connector fitting for mounting to the insert within the first tube by a screw, a second tube is secured to the connector fitting with a fastener through a transverse hole through both the second tube and the connector fitting. When the connector fitting is assembled to the first tubular section and the connecting screw is tightened, a structurally rigid connection is achieved. The second tubular section is positioned over the stepped outside diameter of the connector fitting, aligning the transverse holes. A fastener is installed through the transverse hole. The fastener that secures the connector fitting to the second tubular section is positioned to not allow the screw fastening the connector fitting to the first tubular section to disengage or loosen.

Abstract: The invention relates to a furniture system, in particular a kitchen furniture system consisting of a self-supporting basic framework with tubes and/or sections connected to each other by connecting elements. In accordance with the invention the connecting element has a shaped part which is itself formed as a tube and/or substantially closed hollow section on which at least one laterally protruding projection is formed extending over the whole length of the connecting element and that the connecting elements themselves are integrated as vertical components which replace the tubes and/or sections in some parts in the basic framework.

Abstract: This fixing device includes a cylindrical core (1) provided with an axial orifice (4) through which the front end (10) of a lever arm (2) can slide with a snug fit. The core includes to the interior a positioning projection (11) and two axial extensions (13) provided with securing projections (14) and linked to a coaxial circular ring (17). The front end (10) of the lever arm (2) includes an axial groove (19) adapted to take the positioning projection (11), and on its centered portion (21) a coaxial securing groove (22) adapted to take said securing projections (14).

Abstract: A planing machine includes a carriage locking mechanism disposed above a cutter carriage, which in turn, is connected movably to upstanding posts of a machine base that is disposed below the cutter carriage. The locking mechanism includes a pair of post embracing members, each having elongate plate portion that extends at one side of a respective pair of the posts, and two post embracing portions that are connected to opposite ends of the plate portion and that embrace the respective pair of the posts. The post embracing portions are anchored on the carriage. Two axially aligned tubular sockets are threaded internally in different directions and are mounted on the plate portions of the post embracing members. A regulating rod has opposite end portions that are threaded externally in different directions for threaded engagement with the sockets, respectively.

Abstract: The invention relates to a furniture system, in particular a kitchen furniture system consisting of a self-supporting basic framework with tubes and/or sections connected to each other by connecting elements. In accordance with the invention the connecting element has a shaped part which is itself formed as a tube and/or substantially closed hollow section on which at least one laterally protruding projection is formed extending over the whole length of the connecting element and that the connecting elements themselves are integrated as vertical components which replace the tubes and/or sections in some parts in the basic framework.

Abstract: A structure for supporting a rotation member to an attached member is formed of a clip for rotationally supporting the rotation member to the attached member, and circular member. The clip includes a leg elastically engaging a hole in the attached member, a shaft part fixed to the leg and disposed in a hole of the rotation member for rotationally supporting the rotation member, and a stopping piece attached to the shaft part for preventing the rotation member from coming off from the shaft part. The circular member has a hole in which the shaft part of the clip is disposed, and an elastic pressing piece situated outside the hole. The circular member is disposed between the rotation member and the attached member to elastically press the rotation member to the stopping piece.

Abstract: A flag display assembly for a vehicle having a license plate assembly including a mast, a plurality of mast support members having a gripping collar and an arm integral with the gripping collar. The gripping collar includes an opening with an inner diameter for receiving the mast and gripping the mast. The arm of the mast support member includes a flat surface for abutment of the arm upon a surface of the vehicle license plate assembly, and includes a hole for receiving a fastener, such as a bolt, for securing to the license plate assembly. The display assembly further includes at least one flag attachment assembly preferably including an attachment member which has a gripping ring and an attachment blade which is secured to the flag directly, or to a shoe attached to the flag.

Abstract: The present invention relates to a T-shaped connection frame for connecting car frames, in which a first member is connected to a second member via a joint member to form a "T." The joint member is formed by symmetrically dividing a rectangular tube between its two latch teeth located at the upper-center and lower-center inner walls. The rectangular tube also has protrusions at the left and right exterior walls. The joint member divided in this way has the latch teeth at the upper and lower tips of the mouth formed by the division and has the protrusion situated opposite the mouth so that the first member can be snapped on easily to this mouth and the second member can be attached to the protrusion at the opposite side. This structural arrangement makes the positioning of the frames very simple, obviates a make-shift attachment, and, at the same time, reduces the number of operation steps.

Abstract: An apparatus for selectively and hydraulically locking a hollow cylinder body, such as a lathe cylinder body, onto, and unlocking the cylinder body from, a cylindrical shaft includes a tubular sleeve defining an axially extending passage therein, the sleeve including a centrally located exterior annular channel. The hollow body includes an axially extending cylindrical passage and a single female threaded bore formed to extend radially through the hollow cylinder body to bisect the axial passage thereof. The sleeve is inserted and fixed within the axially extending passage of the body so that the annular channel faces and is closed off by the walls of the axially extending passage to thereby form an annular cavity which is in fluidic communication with the female threaded bore.

Abstract: A connector for connecting a shaft to an implement, for example for connecting a handle to a mop head, comprises two engageable components for mounting on a shaft and an implement respectively. One of the components has a boss formed with an internal threaded socket and an outer peripheral surface. The other component has a central threaded spigot which screws into the socket, and a shroud, surrounding the spigot and spaced therefrom, which is internally tapered and frictionally engages the outer surface of the boss for added support.