Abstract: A toeboard system includes toeboards of a cross section and an end configuration to assist in defining a locking corner connection of two toeboards at a scaffold upright. The system includes a toeboard clamp securable to a scaffold upright with projecting latch fingers for engaging two overlapped partially nested toeboards or two toeboards forming a generally perpendicular corner connection. A latch finger of the toeboard clamp engages a slot or port in the toeboards adjacent an end thereof to positively maintain toeboards in a perpendicular connection.

Abstract: A railing system is disclosed having spacers for spacing apart railing pickets, and a rail which engages the spacers and secures the railing pickets. The spacers are made up of a planar top member, side members extending from longitudinal edges of the top member, and wings extending outwardly from a central position of the side members. The rail comprises a substantially elongated planar member and first and second substantially parallel elongated side-walls perpendicularly connected to the planar member. The side-walls each comprise first and second groove members, which are spaced apart to form grooves running substantially parallel to the elongated planar member. The grooves are adapted to receive the plurality of spacers such that the wings of the spacers abut against the first and second groove members when the spacers are assembled in the railing system.

Abstract: A modular fence device includes a plurality of spaced-apart rods connected between upper and lower beams, a plurality of upper spacers each disposed between top ends of two adjacent ones of the rods, and a plurality of lower spacers each disposed between bottom ends of the two adjacent ones of the rods. Each of the upper and lower beams includes a rail member defining a groove and having two opposite longitudinal rail walls, two spacer retainers extending longitudinally on the respective longitudinal rail walls, and two rail tracks extending above the spacer retainers. The top and bottom ends of each rod respectively extend into the grooves in the rail members of the upper and lower beams, and have a pair of slide protrusions projecting transversely and oppositely therefrom and engaging respectively and slidably the rail tracks of the rail members of the upper and lower beams.

Abstract: A kit and a connector are provided for constructing a fence or barrier. The kit can include upper and lower rails formed with bar-connecting holes distributed along their lengths. First and second bar sections together with the rails can be used to form a fence panel. The first bar sections are mounted between and connect the upper and lower rails and extend between aligned pairs of holes in the upper and lower rails. The second bar sections are connectable to the tops of the first bar sections and each is mountable on the upper rail so as to extend upwardly from one of the holes in this rail. Upper connecting mechanisms join the first bar sections to the second bar sections. Lower connecting mechanisms join the first bar sections to the lower rail at the holes formed therein.

Abstract: The present invention relates to a temporary safety barrier system, which comprises a plurality of posts, a plurality of mesh panels, and a plurality of mesh panel holders. Each mesh panel holder is mountable on a respective post of said plurality of posts, and comprises a post coupler and first and second mesh panel supports, which are attached in common to the post coupler. The post coupler is movable along the post when mounted thereon, and has a locking member for releasably locking the post coupler in a holding position at the post. The second mesh panel support encircles the post in the mounted state. Each mesh panel support has a support hook for receiving a mesh wire of one or more mesh panels. The temporary safety system is arranged to enable inclination of a mesh panel during said height adjustment, thereby facilitating the height adjustment while the mesh panels remain mounted.

Abstract: A fence panel, a method of erecting the same, and a corresponding fence panel kit having a plurality of pickets and a plurality of multi-element rails. The rails include anchor strips that are pivotally pre-attached to the plurality of pickets, resulting in a subassembly that can be folded to an initial compact, folded configuration of the pickets and anchor strips. The subassembly can be unfolded, allowing elongate picket positioning strips to be mounted onto the pickets and the anchor strips. Locking strips are then mounted onto the anchor strips, securing the picket positioning strips in place and completing the assembly of the multi-element rail.

Abstract: An attractive style fence system and method is presented that can be easily erected and disassembled by one person. The fence is based upon typical posts driven into the ground, where relatively posts are clad or covered by an outer post or shell, that can be in any suitable decorative form, such as a traditional post and rail fence. The outer posts and rails can be made from thermoplastics, increasing durability of the fence, and potentially reusing recycled materials.

Abstract: A stanchion for use in a barrier system in accordance with an embodiment of the present application includes a display device mounted at substantially eye level such that it is easily viewed by a user waiting in line in the barrier system. The display device may include interactive features to track user position or allow users to request information, input information or to conduct transactions while on line.

Abstract: A fastener is configured to affix a first article such as a picket to a second article such as a rail to form a railing or balustrade. The fastener includes a first engaging surface having a maximum diameter configured to engage an interior surface of an opening in the first article and a mating surface configured to mate with the second article. The first engaging surface can have shape selected from cylindrical, ellipsoidal, conical, elliptic conical frustum, pyramidal frustum, and ball and other shapes having cross-sections of rectangular, pentagonal, hexagonal, octagonal and other regular polygons having at least four sides such that good engagement is obtained and the fastener is hidden from view in the assembled railing.

Abstract: A fence rail includes a detachable fastener cover that covers and conceals a fastener chamber. Through the use of a knuckle and a catch fastening system, moisture is prevented from entering the fastener chamber. The fastener chamber allows for securing pickets to the rail using a means for fastening as close to the top of the rail as possible thereby allowing for significant racking of the fence.

Abstract: A handrail assembly configured for grasping by a. pedestrian is provided and included a railing formed from an extruded metal such as aluminum. The railing includes an integrally formed channel running a length thereof within the interior of the railing. The channel includes a threaded portion for receiving a fastener for mounting the handrail assembly to a mounting assembly for interconnection to a wall. The mounting assembly includes a fastener secured within a bracket post that extends downwardly from the railing of the handrail assembly. The fastener of the bracket post is self-threaded onto the railing through a pilot hole drilled into the bottom surface of the railing. The bracket post is coupled to a bracket by way of a fastener to thereby mount the bracket to a wall so as to secure the handrail assembly to the wall.

Abstract: The various embodiments disclosed and pictured illustrate a baluster connection system for securing a baluster to a rail. The rail includes a channel formed therein, wherein the channel is defined by two opposing channel walls, a channel floor, and the interior surface of the rail top. Two opposing insert tabs may be affixed to each channel wall a predetermined distance from the rail top so that an insert may be placed between the insert tabs and the rail top. The insert includes apertures and baluster catches through which the second end of each baluster connector may pass in a first position of the insert. In a second position of the insert the baluster connector second end is secured within the channel.

Abstract: A modular exterior decorative track molding assembly including a securing track having a base section including a first channel portion, and a securing section including a second channel portion; the securing section having securing lips and a narrowed width relative to the base section; a trim module having a support rail carrying a decorative trim element received in the securing track; the support rail having a complementary shape to the base section and the securing section and including retaining channels receiving the securing lips of the securing track to resist separation between the securing track and the support rail; and, a trim element base included in the support rail carrying a decorative trim element and disposed between the retaining channels, wherein the trim element base extends through a trim module opening of the securing track.

Abstract: A freestanding fence constructed of square tubing and a few connectors. The fence is supported on footed x-shaped posts that sit on top of the ground. A horizontal member extends between adjacent x-shaped posts and a footed vertical support member is provided on each horizontal member approximately midway between the adjacent x-shaped posts. Several fence wires extend horizontally and connect to adjacent x-shaped posts along the length of the fence via electrical insulators and non-conductive fasteners so that the fence can be electrified. The horizontal members attach to the posts by means of couplings that allow for both vertical and horizontal adjustment. The fence is constructed of easily transported and assembled pieces that can be disassembled, moved, and then reassembled as often as needed.

Abstract: A deck and stair railing has top and bottom rails joined to upright posts and upright tubes extended between the rails. Ball knobs mounted on plates or the rails are secured with deck screws to the rails to retain the tubes in assembled relation with the rails. The ball knobs have continuous circumferential ribs located in force fit relation with inside surfaces of the tubes. The tubes have projections that engage the ball knobs to prevent the tubes from rotating relative to the ball knobs.

Abstract: In certain embodiments, a fence system includes a rail having a first surface having one or more apertures. The rail also includes second and third surfaces opposing one another, the first, second, and third surfaces of the rail forming a channel. The second surface and the third surface of the rail have first and second lips, respectively, the first and second lips extending into the channel. The fence system section also includes one or more pickets inserted through corresponding apertures of the first surface of the rail. Each picket has a first connection region located substantially in the channel formed by the first, second, and third surfaces of the rail such that the first connection region is substantially prevented from passing through the corresponding aperture in the first surface of the rail or between the opening defined by the first and second lips of the rail.

Abstract: A customizable decorative fencing system. A plurality of stakes, configured to be driven into the ground at selected positions, have projecting portions projecting above the ground. Posts have cavities in lower distal ends thereof. Any stake projecting portion is configured to slide into any post cavity, and be frictionally, removably, interchangeably retained therein. Fence components, including base units, gate units, and end units, include post collars, and hinge collars, respectively, through which any post can slide. Removability and interchangeability of posts with respect to fence components, and removability and interchangeability of posts with respect to stakes, provides for an infinite number of possible fence configurations.

Abstract: A fencing connector and fencing system utilizing fencing connectors. The fencing connectors include a swivel mount having a cavity configured to receive a first swivel assembly. The first swivel assembly is rotatable about a first axis within the swivel mount. A second swivel assembly is rotatably attached to the first swivel assembly. The second swivel assembly is rotatable about a second axis. The second swivel assembly further having a pocket configured to receive a structural member.

Abstract: A guardrail defined by a number of vertical supporting posts fixed successively to the ground along the edge of a road, and by one or more longitudinal members fixed successively and substantially horizontally to the vertical posts to form a longitudinal transverse retaining member extending along the edge of the road, at a predetermined height off the ground; each of the longitudinal members being defined by a rigid, controlled-deformation strip of composite material, which is bent back on itself to form a substantially S-shaped first longitudinal portion and a substantially C-shaped second longitudinal portion adjoining and covering the first longitudinal portion, so as to form a tubular, complex-section body extending from one vertical post to another and substantially parallel to and a predetermined height off the ground.

Abstract: A railing has its posts and rails intersected with each other and fixed stably together by connecting plates hidden inside the rails. The connecting plate has a wing formed at a preset position between every two posts. The wing has a hole at its center. Each of the rails has a long space defined by three walls of its inverted U-shape, a rectangular opening bored in its top side for being correspondingly inserted by the post, and a female-threaded tube extended downward from an upper inner wall for corresponding to a hole of a wing of the connecting plate so that a screw can be inserted from under the hole to threadably engage with the female-threaded tube to keep the rails fixed with the connecting plates. The railing is thus assembled stably by means of the connecting plates and the screws that are hidden inside the rails, obtaining an aesthetic appearance.

Abstract: An improved safety handrail apparatus including a support component with channel element and a light emission component. The improved safety handrail apparatus and components thereof are manufactured by extrusion, co-extrusion, injection molding, insert injection molding, two shot molding or a combination thereof. The improved safety handrail apparatus allows configuration into any desired length handrail by interconnecting any number of individual handrail apparatuses.

Abstract: A barrier system includes a plurality of barriers, each barrier having a first end and a second end, and one or more posts. Each post includes a center wall having a first end and a second end. A first wall extends from the center wall first end, and a second wall extends from the first wall such that the center wall, first wall and second wall define a first channel capable of receiving one of the first end and second end of a first barrier. A third wall extends from the center wall second end, and fourth wall extends from the third wall such that the center wall, third wall and fourth wall define a second channel capable of receiving one of the first end and second end of a second barrier.

Abstract: A metal baluster is provided which has first and second metal segments, where each of these metal segments comprises a first end and a second end. The first ends of the first metal segments include extension portions from mating engagement with one another and the second end of each metal segment is adapted for attachment to the underside of an elongated handrail or to a tread or floor. The second end of each of the metal segments further comprises an ornamental portion which is proximate the elongated handrail or the tread or the floor. Connection apparatuses provided for securing the engagement of the extension portions of the first metal segment and the second metal segment. In another embodiment, a metal baluster of the present invention may comprise three metal segments where the first two metal segments are adapted for attachment to the underside of an elongated rail or to tread or floor and has an ornamental portion proximate the first end.

Abstract: A barrier, such as fence panel, is formed from a plurality of channel-shaped rails and plurality of upright members. Each upright member traverses the rail channels of the rails forming the barrier and is mechanically connected to the rail, such that the upright member is selectively tiltable with respect to the rail within an angular adjustment range. The mechanical connection between rail and upright member may be formed by a weld, such as a resistance weld, by a permanent adhesive, or with a fastener such as bolt or screw. A tab that extends from the rail web may be used to connect a rail to an upright member. The tab may depend from a bracket installed within the rail channel, or may be cut out and bent into the channel from the web. The tab is rotatable about an axis situated at or adjacent the web.

Abstract: A method and apparatus for attaching balusters for a stair, balcony, deck, landing or the like providing an adjustable connection of a baluster to a rail and a base surface. The apparatus includes a ball adapter and a socket. The ball adapter is joined with the socket and mounted on a stair surface. The ball adapter and its mounting to the socket provides for limited adjustable movement of the adapter with respect to the socket and the stair surface. The ball adapter provides for the attachment of a baluster to the adapter. The adjustable connection of this apparatus can be used to attach to a rail or to a base of a stair, balcony, deck, landing or the like. The ball adapter and socket can be used to produce modular prefabricated baluster systems that can be adjusted for any slope or level rail and baluster installation.

Abstract: A connector secures together a first member and a second member, wherein each of the first and second members of has an aperture and a wall thickness at the point ofjoining. The connector includes a body portion having a generally circular cross-section taken along a plane that is perpendicular to a longitudinal axis of the body portion. The connector is secured to the first member in the aperture by an attachment being rigidly joined to the body portion.

Abstract: A fence assembly is described comprising: a first fence panel provided with an elongate first post member along an edge margin of the panel; a second fence panel provided with an elongate second post member provided along an edge margin of the panel; the first and second post members being adapted to be displaced lengthwise with respect to one another to provide for a range of displaced positions or being adapted to be rotated with respect to one another to provide for a range of rotated positions and to be attached in fixed association with one another in any one of the range of displaced or rotated positions respectively; and wherein each fence panel further includes at least one fence rail, each fence rail is adapted to be fixed in any one of a range of angular positions relative to the fence post.

Abstract: A kit of parts for assembly into a balustrade (1), the kit comprising rails (3), baluster brackets (6), posts (2), connectors (5) for connecting the posts (2) to the rails (3) and rail-to-rail connectors (8) for connecting two rails (3A, 3B) in a parallel and spaced apart relationship. The baluster brackets (6) and/or the rails (3) are shaped so as to ensure that each bracket (6) is engagable with a rail (3) in a desired configuration. There is further disclosed a balustrade incorporating one or more of the above parts and a method of installing a balustrade (1) on a substrate (5).

Abstract: An apparatus for preventing a collision between a vehicle and an end of a Metal Beam Guide Fence. A transition device is attached to a modified section of the Metal Beam Guide Fence. The transition device and modified section are configured to allow passage of cables of a High Tension Cable Barrier through the Metal Beam Guide Fence and the transition device. The High Tension Cable Barrier redirects the colliding vehicle away from the end of the Metal Beam Guide Fence. The transition device and modified section are also configured to interact with the cables of the High Tension Cable Barrier to transfer and spread the collision load from the high tension cables to the Metal Beam Guide Fence.

Abstract: A fence has a connecting member to join an upper fence and a lower fence together. The connecting member consists of an upper fastening bar transversely positioned on the bottom of each post of the up per fence, a lower fastening bar also transversely positioned on the top of each post of the lower fence, and a connecting tube that is cut with an inserting groove in its bottom and plural holes bored on its top respectively for each post of the upper fence to insert. Two positioning segments are formed inside the connecting tube to respectively fix with the upper fastening bar and the lower fastening bar. A connecting pin has its two ends respectively inserted into each post of the upper fence and also each post of the lower fence to keep the two posts joined together. Thus, the fence can be easily assembled and raised with its height without discarding original posts.

Abstract: A fastener for anchoring fencing to a post. The fastener includes first and second separable and complementary sections, each section have an inner and outer surface, a middle web portion, opposed first and second sides extend from opposite edges of the middle web portion in a direction outwardly from the middle web portion, and opposed first and second ends. Male coupling members extend in a direction outward from one of the sides of the first section and the second section has female receiving spaces on one of the sided. Wherein the male coupling members being biasable for engagement with the spaces to detachably secure the sections together with the inner surfaces facing one another such that the inner surfaces define an axial passage that extends from the first to the second ends of the sections, whereby the passage permits the fencing and post to be clamped together between the sections.

Abstract: A railing apparatus includes an upper rail, a lower rail spaced below and generally parallel to the upper rail, and a plurality of balusters extending generally vertically between the upper and lower rails. Each baluster includes a hollow casing and a brace extending lengthwise within the casing, the brace having an upper end secured to the upper rail and a lower end secured to the lower rail.

Abstract: Plastic molded uprights and/or light and flag mounts may include stepped upper ends for mounting of a light thereon and/or laterally spaced apart oppositely downwardly angled flag mounting holes extending at least partway therethrough adjacent the upper ends thereof. One or more pairs of integral molded, axially spaced apart flanges may protrude outwardly from one of the front and back walls of the uprights for aiding in locating and supporting one or more barricade boards between respective pairs of flanges.

Abstract: A barrier includes two upright posts and a retractable top rail and a retractable bottom rail are connected between the two posts. A piece of fabric is located in an area enclosed by the two posts, the top rail and the bottom rail. Two suction disks are connected on two ends of each of the top rail and the bottom rail so as to be sucked on two sidewalls between which the barrier is located. Two side pieces are connected to the two posts and extend toward the two sidewalls so as to block the scenes via gaps between the posts and the sidewalls.

Abstract: A protective barricade system to prevent persons from accidentally falling through holes in roofs or floors or from the edges of stairwells, balconies, or pitched roofs. The barricade system comprises a plurality of barricade brackets that are spaced apart and can be releasably attached to the underlying surface.

Abstract: A rail structure for use as part of a fence construction. The rail has a rigid support member enclosed by a sleeve, the sleeve having a groove or channel extending along its longitudinal length and a hollow chamber for receiving the support member therein. The channel is dimensioned to receive a plurality of slats disposed in spaced relation to one another such that when received in the channels of opposed rails a fence section is formed. Various modifications to the basic rail structure permit construction of a privacy or containment fence section that may include a plurality of vertical segments, including for example lattice work.

Abstract: A fencing system includes an anchor that is insertable into the ground and a pole having an end that is mounted over the anchor such that the pole is supported by the anchor. A fastener is located on the pole and is used to secure fencing material to the pole.

Abstract: A termination bracket that can be used with a wire and polymer composite ribbon fencing has a longitudinal channel member including a first main surface and a pair of outwardly protruding sides extending along opposite edges. A clasp member extends laterally at least part way between the two sides. The clasp member defines at least one opening, each opening receiving a vice element adapted to capture an end of a longitudinally extending polymer composite fencing element. The wire and polymer composite ribbon has a width substantially equal to the spacing between the outwardly protruding sides.

Abstract: A bracket having a main body with attachment structure for fixing the bracket to a first post and fastening means for securing the bracket relative to a second post. The bracket is preferably used for strengthening a post assembly for a fence or trellis system.

Abstract: A fence post for use in a wood fence system comprises an elongated center panel, a first side flange and a second side flange that are configured such that the fence post has a generally Z-shaped cross-section. The fence post is preferably made out of metal, such as galvanized steel or the like, with the rails and pickets being made out of wood to provide the appearance of a wood fence. The width of the center panel is approximately the same width as a standard two-by-four such that when the end of a rail is placed against the center panel one of the side flanges abut the side of the rail and the opposite side of the rail is aligned with the other side flange. In the fence system, pickets are attached to the rails. If desired, one picket is placed over a side rail to cover the fence post.

Abstract: A stair rail apparatus including a component (1) defining a channel with a base surface (2) at least part of which is shaped to project or extend into said channel, and a connector device (9) arranged to connect to said component via an abutment portion (8) thereof defining a recess shaped to receive said projecting or extending base surface part such that parts of the abutment portion within the recess abut the received projecting base surface part when the connector device is connected to the component in use.

Abstract: A fencing system includes a vertically elongated post mount mountable on a foundation and one or more post inserts mounted on the post mount to provide a stable structure for fastening thereto rail mounting brackets and associated rails. Each post insert extends outwardly from the post mount and typically abuts an inner surface of a hollow post. Fasteners extend from the rail mounting bracket through the post and into the post insert to provide a strong connection for the mounting of the rail mounting bracket and rail. The post inserts may be mounted on the post mount without tools. One of the post inserts serves as a spacer for setting the height of associated rail mounting brackets and rails. The spacer may include two members which are removably connected to one another via a friction fit to provide various benefits.

Abstract: A railing assembly and method of forming same having a hand rail, shoe rail, and a plurality of spaced, parallel balusters secured at their respective upper and lower ends to resilient straps received and fixed in plows formed in the hand rail and shoe rail. The respective upper and lower ends of each baluster are arcuately shaped allowing the balusters to be moved to any angular orientation with respect to the rails while maintaining the balusters parallel to each other with the ends of the balusters being in contact with the straps.

Abstract: Fence post (1) having a point portion (2) and a principal portion (3). The principal portion is provided with connection elements to assemble a plurality of posts (1, 1?). The connection elements include assembly elements (81, 82) constituted by a female element and a male element. The male element is connected to the principal portion by means of a spacer element (83) connected to the principal portion. The assembly elements permit connecting head to tail two posts to form a pair of posts. The connecting elements also include through holes (71, 72) located on the principal portion. The through holes permit associating on connecting rods several pairs of posts.

Abstract: A combined guardrail and cable safety system is disclosed. In one aspect, a safety barrier incorporating the teachings of the present disclosure may include a plurality of cable posts spaced from each other and disposed adjacent to a roadway. At least two cables may be releasably engaged with and supported by the cable posts. The cable posts and the at least two cables may cooperate with each other to prevent a vehicle from leaving the roadway. A plurality of guardrail posts may also spaced from each other and disposed adjacent to the roadway longitudinally spaced from the plurality of cable post. A box beam guardrail beam may be attached to the plurality of guardrail posts. The at least two cables may operably extend from the cable posts to engage respective cable anchor brackets attached to the box beam guardrail beam.

Abstract: A support system comprises a first component, a second component to be secured to the first component and to be supported, at least in part, thereby in use, and a coupling arrangement for securing the first and second components to one another, the coupling arrangement comprising a lock member secured to one of the first and second components by a crank, and a socket provided on the other of the first and second components and adapted to receive part of the lock member, wherein the lock member and the socket are designed such that the lock member can only be inserted into or removed from the socket when tilted or angled relative thereto.

Abstract: A barrier safety system (3) for supporting a barrier rail (1) between a pair of frangible upright posts (2) includes a pair of pins (8) insertable in respective sockets (4) in the posts, the pins each having a weakened portion designed to break upon the application of a vertically downward load onto the barrier rail within or above a predetermined range. In one embodiment stop members (10) are provided to vary the distance the support pin may be inserted into the socket for accommodating different sizes of barriers, to thereby ensure that similar leverage is applied to the weakened portion by different sized barrier rails such that they all break the pin when a similar load has been applied to the top of the barrier rail. In another, preferred, embodiment the weakened portion is in the form of a generally ‘V’-shaped notch (9a) providing a sharply defined fracture point for the pin when under load.

Abstract: A handrail assembly 1 for a staircase or the like comprises a base rail R and a handrail 2 each preferably having at least one substantially flat surface (2a, FIG. 18), at least one upright post 3 and a bracket 4 to connect one rail 2 to the upright post 3, the post-to-rail bracket 4 having a base 40 for engagement with the substantially flat surface (2a, FIG. 18) of the rail 2 and a deformable portion 45 to accommodate different inclinations of the rail 2 relative to the post 3. An assembly 1 may further comprise a connector 5 to interconnect the handrail 2 with a rail 6, the connector 5 preferably having a first hollow portion with an internal cross-sectional shape to match the cross-section of the handrail 2, the handrail 2 extending at least partially into the first hollow portion.

Abstract: A fencing system includes a post mount mountable on a foundation and having a vertically extending outer surface. A post insert sits atop the post mount and has an outer surface disposed outwardly of the post mount outer surface. The post insert has an upper sidewall which extends upwardly of the post mount and defines an upwardly opening cavity. A post includes a sidewall having an inner surface defining a cavity therein in which the post mount and post insert are slidably received with the outer surface of the post insert preferably closely adjacent the post inner surface. A rail is mounted via a rail mounting bracket to the post insert. Threaded fasteners extend from the rail mounting bracket through respective holes in the post and are threaded into mounting holes in the post insert to provide a strong connection for the mounting of the rail mounting bracket and rail.

Abstract: A structure of a fence or the like includes plural rails and posts. The intersections of the rails and the posts are fixed by connecting elements. The rail has an inner rail and an outer rail having an opening to cover on the inner rail. Two sides of the outer rail have respectively a ridge projected outwards to keep its inner wall formed as a groove for hiding the connecting elements and enhancing the strength of the rail. Two sides of the inner rail corresponding to the connecting elements are formed as a recess for positioning the connecting elements in them, so that the outer rail is not to be scraped by the connecting elements to damage its coating while mounting the outer rail on the inner rail.