Abstract: A system and method of installing a modular fencing system in which slotted posts are used in conjunction with hollow longitudinal rails to support the fence panels in a manner that creates a unified curtain wall perimeter barrier. The posts, rails, and fence panels are made of metal. Plastic sleeves with angularly-tilted ends are inserted into both sides of a slot opening to prevent water intrusion and to facilitate fencing on a slope. The rails are then slidably inserted into and through the sleeves to be held in place through the slots. Adjacent rails are mechanically fastened to each other. The full length of the fence is bolted to the rails to ensure that any load or impact to the fence is distributed throughout the entire system. For additional strength, each fence panel is also through-bolted to metallic finish plates, which are mounted on the slotted posts.

Abstract: An apparatus including a first rail and a first locking strip, each having a first opening, and a first picket, having a first slot. The first locking strip may be inserted into the first rail so that the first openings of the first rail and the first locking strip align in a non locked state. At least part of the first picket may be inserted into the first openings of the first locking strip and the first rail, when the first openings of the first locking strip and the first rail are aligned in the non locked state. The first locking strip is configured to slide into a locked state in which part of the first locking strip is within the first slot of the first picket, while the first locking strip is within the first rail, and while the first picket is inserted in the first rail.

Abstract: A fence system for strengthening a vinyl fence which includes a plurality of fence posts having specified dimensions, and the posts have a hollow interior. A plurality of section panels include specified dimensions, and the section panels each including a slat portion. The section panels each include a fence railing coupled to a top and bottom of the slat portion. The fence railings each define a hollow interior, and the fence railings are coupled to the posts by a connecting portion of the fence railings passing through corresponding holes in the posts. A strengthening member for positioning in each of the hollow portions of the top and bottom fence railings. A plurality of post members for positioning within the hollow interior at the top of the fence posts. The post members being attachable to the connecting portion of the fence railing using a first attachment element.

Abstract: The invention provides an easy to assemble railing assembly used for residential and commercial purposes. The railing assembly includes a plurality of locking components, a plurality of upright members and a plurality of locking pins. A locking component includes a plurality of wedge shaped locking slots. An upright member is configured to receive the locking component therewithin. The locking pin of the plurality of locking pins has each end connected to one or more wedge shaped locking slots of the plurality of wedge shaped locking slots.

Abstract: An improved fence assembly is comprised of a plurality of pickets, an inner rail and an outer rail. The pickets are vertically oriented and attached to the inner rail. The inner rail has an upper locking seat, a lower locking seat and a recess between the seats. The fasteners attaching the inner rail to the pickets have their heads entirely enclosed within the recess. The outer rail snap fits over the inner rail. The outer rail is securely attached to the inner rail, but it may slide along the inner rail. The outer rail has an upper locking tang, a lower locking tang and a tensioning wall. These components slidingly interlock with the inner rail locking seats to provide a fence assembly wherein the outer rail is slidingly attached to the inner rail and the fasteners securing the inner rail to the pickets are hidden.

Abstract: An improved railing assembly is comprised of a plurality of pickets, a top rail, an inner rail and a bottom rail. The inner rail is pivotally attached to the pickets with fasteners. The fasteners are hidden from view by the top rail. Stiffeners project from the top rail and from the bottom rail. The stiffeners each either interface with another stiffener or a seat on the inner rail to provide rigidity to the assembly. The bottom of the railing assembly is substantially covered by the bottom rail. The angle between the pickets and the top rail is adjustable such that the pickets may be vertically oriented, while the top rail is parallel to a sloped terrain upon which the railing assembly is installed.

Abstract: A fence (1) has at least two hollow fence posts (2), between which at least two crossbeams (3) extend, where each crossbeam (3) fits into an opening (4) provided in the fence post (2), a plate-shaped blocking element (5) extending into the cavity of the fence post (2) which is provided to block the crossbeams (3) against displacement, where the crossbeam (3) is provided in its external circumference with at least one recess (6) which lies within the hollow inner area of the fence post (2) and wherein the plate-shaped blocking element (5) is movable between a first position and a second position in which the crossbeam (3) is blocked in place.

Abstract: A rail and post assembly that allows for onsite fence and gate panel construction is disclosed herein. A shear block is affixed to each end of a rail. The shear block and rail are then fed through an opening in a post. Fasteners then secure the shear block to the post, which thereby provides a rail and post assembly.

Abstract: Apparatus and method of assembling a fence system. A fence post comprises an inner structural post and an outer post. The inner structural post includes a base flange for attaching the inner structural post to a surface. A lower insert block is inserted over the inner structural post and in contact with the base flange. The outer post comprises upper and lower apertures. Horizontal rail supports are inserted through the upper and lower apertures. The horizontal rail supports are locked in place by locking devices. Horizontal rails are inserted over the horizontal rail supports to create a fence system.

Abstract: A fencing/railing assembly adapted to be positioned between a pair of posts and mounted thereto. The assembly includes a plurality of pickets, a plurality of rails extending transverse to the pickets, and one or more pivoting, sliding connectors for connecting a picket to a rail, with the sliding, pivotal connection concealed by the rail. The connector is slidably mounted to the rail and is pivotally connected to the picket. The sliding, pivotal connection allows the pickets to be oriented at greater angles relative to the rails (i.e. it allows the assembly to rack to a greater degree, thereby allowing the fencing/raining to following more-steeply changing terrain or contours). In one embodiment, an elongated connector strip is concealed by the rail and spans multiple pickets. In another embodiment, the assembly includes a plurality of shorter connectors, one for each picket/rail connection.

Abstract: A fencing/railing assembly adapted to be positioned between a pair of posts and mounted thereto. The assembly includes a plurality of pickets, a plurality of rails extending transverse to the pickets, and one or more pivoting, sliding connectors for connecting a picket to a rail, with the sliding, pivotal connection concealed by the rail. The connector is slidably mounted to the rail and is pivotally connected to the picket. The sliding, pivotal connection allows the pickets to be oriented at greater angles relative to the rails (i.e. it allows the assembly to rack to a greater degree, thereby allowing the fencing/raining to following more-steeply changing terrain or contours). In one embodiment, an elongated connector strip is concealed by the rail and spans multiple pickets. In another embodiment, the assembly includes a plurality of shorter connectors, one for each picket/rail connection.

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 plurality of similarly configured coupling component assemblies is provided. Each assembly includes a first coil spring and a second coil spring. Each coil spring is positioned in a hole. Each coil spring has an interior end of a reduced diameter with a fastener attaching the spring to the hole. Each coil spring has an exterior end extending a short distance outside of the hole. The exterior ends of adjacent opposing coil springs are adapted to interlock and join associated components of the system when rotated with respect to each other about a common axis of rotation. The coupling components also include a cylindrical rod with opposed ends within the opposing coil springs. Each rod has an axial length greater than the length of each coil spring and less than the axial length of two holes.

Abstract: Interlocking clips are provided to assemble structures without the need for conventional fasteners. Structures such as fences, which may be assembled in situ, include the cooperating clips designed to provide a controlled amount of “play” between the pickets and rails of the fence to enable adjustment when racking the fences to accommodate sloping terrain. The clips are provided to interlock rails to cross members. The clips are preferably formed of a single sheet of a springy metallic material. The clips may be advantageously used to couple other types of apparatus.

Abstract: Apparatus and method of assembling a fence system. A fence post comprises an inner structural post and an outer post. The inner structural post includes a base flange for attaching the inner structural post to a surface. A lower insert block is inserted over the inner structural post and in contact with the base flange. The outer post comprises upper and lower apertures. Horizontal rail supports are inserted through the upper and lower apertures. The horizontal rail supports are locked in place by locking devices. Horizontal rails are inserted over the horizontal rail supports to create a fence system.

Abstract: A modular rail and post fence system which may be fabricated, assembled, and installed without fasteners, adhesives or welding. The fence system includes a plurality of rail assemblies with each rail assembly formed from a pair of panels. Each panel has a pair of sidewalls joined together at an angle to form an angled edge wherein the pair of panels are joined together to form a rail assembly. A plurality of elongated posts are also provided. Each elongated post has at least one longitudinal recess. At least one pair of notches in the pair of longitudinal recesses is provided whereby the angled edges of each rail assembly are received in one pair of notches of the elongated posts.

Abstract: Fence columns, fences including such columns, and related methods of fence assembly and disassembly are disclosed. A column for a column and panel fence may include an elongated member, column faces, and a cross-piece. The elongated member may have a first end and a second end, and the first end may be secured to a footing. A first column face and an opposing second column face may form at least one channel therebetween sized and configured to receive an end portion of at least one fence panel. The cross-piece may have a first end coupled to the first column face, a second end coupled to the second column face and an intermediate portion coupled to the second end of the elongated member. Additionally, the cross-piece and the elongated member may be held in tension by the footing, the first column face and the second column face.

Abstract: In a preferred embodiment, an apparatus, including: a plurality of members disposed inside generally vertical balusters; each of the members having formed therethrough a hole; a plurality of wires, cables, rods, pipes, tubes (round, oval, or multi-sided) or the like, each one disposed through one of the holes; and the members being rotatable to position the wires, cables, rods, pipes, tubes (round, oval, or multi-sided), or the like at a selected angle from horizontal.

Abstract: A modular rail and post fence system. The fence system includes a plurality of rail assemblies with each rail assembly formed from a pair of panels. Each panel has a pair of sidewalls joined together at an angle to form an angled edge wherein the pair of panels are joined together to form a rail assembly. A plurality of elongated posts are also provided. Each elongated post has at least one longitudinal recess with a pair of opposed protrusions extending into the longitudinal recess. At least one pair of notches in the pair of opposed protrusions is provided whereby the angled edges of each rail assembly are received in one pair of notches of the elongated posts. The entire system may be fabricated, assembled, and installed without fasteners.

Abstract: In a fence having a plurality of posts, vertically-spaced rails extend across the posts. Horizontally-spaced union strips are extended across the rails, and sheeted infill material is positioned within the open faces of the union strips, so that the sheeted infill material extends from the first union strip to the second union strip.

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: 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: A plurality of similarly configured coupling component assemblies is provided. Each assembly includes a first coil spring and a second coil spring. Each coil spring is positioned in a hole. Each coil spring has an interior end of a reduced diameter with a fastener attaching the spring to the hole. Each coil spring has an exterior end extending a short distance outside of the hole. The exterior ends of adjacent opposing coil springs are adapted to interlock and join associated components of the system when rotated with respect to each other about a common axis of rotation. The coupling components also include a cylindrical rod with opposed ends within the opposing coil springs. Each rod has an axial length greater than the length of each coil spring and less than the axial length of two holes.

Abstract: A fence rail assembly is provided comprising an extruded rail having a lengthwise extending slot for receiving a plurality of fasteners for attaching the rail to a plurality of pickets. The slot is designed with internal flanges adapted for engaging mating flanges on legs of a cover to be placed on the slot. The cover is sized to fit snugly at the slot opening to minimize water and debris intrusion, as well as prevent loosening of the fasteners.

Abstract: A fence stabilization system has a plurality of vertical fence support posts, each having hollow interiors extending the full length of each post. A column insert is positioned within each support post and extends substantially the length of the post. Each column insert is adjacent to, but spaced apart from the outer wall of the support post. The column insert has openings which are aligned with openings in the support post itself for the insertion of horizontal fence rail members into and through both the column insert and support post openings. Locking brackets with threaded connectors are located near the upper ends of the column insert and support post for securing horizontal rail members to the post. Threaded adjustment connectors are located near the lower ends of the column insert and support post to adjust the position of the column insert within the post and to secure the column insert position within the post.

Abstract: A fence construction system in which pickets (52) are attached to rails (50, 51) using fastening means located inside the rails. In one embodiment the pickets are fastened to a rail by a common locking rod. In another embodiment, the pickets (52) are deformed inside the rail (51) by a crimping tool. Equipment that facilitates assembling of the fence may be provided. Top or bottom rails may also have a support structure provided within the rail.

Abstract: A railing system having a thin profile balustrade for minimum obstruction of the view therebeyond. The railing system includes spaced parallel upper and lower rails which are supported in conventional fashion from upright posts. The balustrade is made of a plurality of parallel upright rod balusters extending between the rails and having upper and lower bent ends. Upper and lower elongate channels are provided and they respectively extend with the upper and lower rails. Each channel has an open side which is respectively secured against the bottom side or inside of the upper rail and the top side or inside of the lower rail, thereby providing an enclosed elongate passage in the channels. Spaced apertures are provided in the channels and receive the bent rod ends therethrough with the bent ends received in the channel passages for retention therein.

Abstract: A mounting attachment for connecting a picket to an angled rail. The mounting attachment comprises a base having an aperture therethrough and into which the picket is inserted. A spring-biased retaining member is provided on the base and is adapted to engage an outer surface of the picket when it is inserted into the aperture. The retaining member urges the picket into contact with the wall of the base which defines the aperture, thus preventing the picket from moving within the aperture and substantially parallel to the longitudinal axis of the rail.

Abstract: The internal tube connector assembly removeably secures hollow or solid tubes together having any desired angle there-between and comprises a receiving tube and an extending tube, each having a substantially continuous inside and outside surface. The receiving tube has a greater inner perimeter than an outer perimeter of the extending tube. A securing member having a centrally oriented fastener receiving aperture slidingly extends through apertures in the sidewall of the extending tube. A receiver having an outer surface coincident in shape with the inside surface of the receiving tube, and optionally having a receiving indentation, has a centrally oriented fastener aperture. A fastener removeably extends through the fastener opening in the sidewall of the receiving tube and into the fastener aperture in the receiver, and cooperates with the securing member to removeably secure the receiving tube with the extending tube.

Abstract: A picket fence assembly is provided which includes uniquely configured pickets which facilitate fast and easy construction of a picket fence without the need for additional mechanical fasteners. In one embodiment, the picket fence includes non-circular pickets, a first horizontal member and a second horizontal member. The first and second horizontal members include openings configured to receive respective pickets. Each picket includes at least one notch positioned to align with a respective opening in one of the first and second horizontal members. The notch facilitates rotation of the picket in relation to the one horizontal member to axially secure the vertical picket to the one horizontal member. The opening in the other horizontal member is oriented to non-rotatably receive the picket member after it has been secured to the one horizontal member. A method of assembling a picket fence assembly is also disclosed.

Abstract: An interlocking fence system is disclosed. Two spaced-apart upright posts (8, 10) attached to a grade G support an upper rail (4) with an offset locking aperture (26) and an alignment aperture (32) and further support a lower rail (6) with an alignment aperture (40). A picket (2) has a locking slot (22) with an edge (28) of the locking aperture (26) in the upper rail (4) serving as a tab to restrict axial movement when inserted therein. Alignment aperture (32) in the upper rail (4) and alignment aperture (40) in the lower rail (6) serve to restrict lateral movement of the picket (2). To support the rails (4, 6), retaining slots (24, 24?) in the upper rail (4) and retaining slots (42, 42?) in the lower rail (6) can be retained by an edge (38, 50, 38?, 50?) in support apertures (12, 14, 16, 18) in the posts (8A, 10A).

Abstract: A screw hiding device for combining lateral tubes with upright tubes includes a position strip to match with each lateral tube. Each position strip has an upright wall to contact with each upright tube and fixed together with a screw. Each lateral tube has an upper wall and two side walls forming a lengthwise opening therebetween. Each of the two sides has a lower support ridge and an upper stopper on an inner wall, with the distance between each upper stopper and each lower support ridge being equal to the height of the upright wall of the position strip. Each position strip is fixed on an outer surface of each upright tube with a screw and in the space between the upper stopper and the lower support ridge, with each lateral tube hiding each screw and each position strip to beautify a fence formed by the lateral and the upright tubes.

Abstract: An interlocking fence system is disclosed. Two spaced-apart upright posts (8, 10) attached to a grade G support a locking rail (4) with an offset locking aperture (26) and an alignment aperture (32) and further support an alignment rail (6) with an alignment aperture (40). A picket (2) has a locking slot (22) with an edge (28) of the locking aperture (26) in locking rail (4) serving as a tab to restrict axial movement when inserted therein. Alignment aperture (32) in the locking rail (4) and alignment aperture (40) in alignment rail (6) serve to restrict lateral movement of the picket (2). To support the rails (4, 6), retaining slots (24, 24?) in the locking rail (4) and retaining slots (42, 42?) in the alignment rail (6) can be retained by an edge (38, 50, 38?, 50?) in support apertures (12, 14, 16, 18) in the posts (8A, 10A).

Abstract: A fence system which can be erected on site and comprising a set of transverse rails of metallic material, formed as hollow sections, a plurality of vertical balusters, which can be interengaged with the transverse rails; and a plurality interconnecting devices which are attachable to the vertical balusters, and which interengage with the interior of the transverse rails, so that the vertical balusters can be connected with the transverse rails at spaced intervals.

Abstract: A fence having tubular rails, tubular pickets and tubular posts formed from pultruded fiberglass has several advantageous features. Lightweight fiberglass components are very strong and will not rust like metal fencing and do not require frequent maintenance like wood fencing. Pultruded fiberglass components are easy to manufacture and transport and the finished fence can be assembled using conventional fasteners. Once formed the components of this fence system can be bundled in easy to ship sets for assembly in the field. The fence system adapts well to difficult yards to fence because it can be modified with conventional hand tools.

Abstract: A fence assembly comprising fence posts, fence rails and clips for connecting them together. The fence posts have at least one opening in one or more of the walls and the rail clips are sized to snap fit into the openings. The rail clip includes a rear wall with a pair of aligned side walls extending outwardly away therefrom. A pair of spaced apart flanges extend outwardly away from the outer surface of each side wall and the spaced apart flanges define a slot therebetween. A portion of the wall of the post is received within each slot when the clip is inserted into the opening. The rail is inserted into the clip and then fasteners are employed to secure the clip and rail together and, if desired, to secure the clip to the post.

Abstract: A barrier such as a fence is formed by welding conductive upright members to conductive U-shaped rails by a projection resistance welding process. The rail includes at least one weld-forming region which projects within the rail channel, and may be formed wither as a ridge, or as a longitudinally spaced series of nipple-shaped projections. The upright member is transversely positioned within the rail channel in contact with the weld-forming region. A welding current transmitted between the upright member and the rail causes the weld-forming region to at least partially melt and form a weld within the rail channel.

Abstract: A lock secures a first member to a second member, such as a fence rail to a post. The lock may include a lock body, a first locking element and a second locking element. The first locking element and second locking element may secure the lock to the first member and second member, respectively. Preferably, the lock is hidden from view in use.

Abstract: A privacy fencing system may be completely roll formed out of all aluminum and other various metals. This fence bolts together entirely to simulate the traditional old wood privacy picket fence, but does not deteriorate over time as a normal wood fence. Moreover, means are provided for facilitating air to flow through the privacy fence, for adjusting the privacy fence height to non-level terrains, and for maintaining a straight line privacy fence over non-level terrains.

Abstract: A fence construction system comprises a clip attached securely to a picket of a fence. The picket is inserted in a hole of a rail and the clip secures the picket to the rail, without field welding.

Abstract: Plastic fences where rails are inserted into holes in hollow posts are effectively stiffened by inserting into the hollow post a stiffening device which grips the rails extending into the post, and which is stabilized against movement so as to prevent angular deflection of the rails with the posts in a plane orthogonal to the longitudinal axis of the post.

Abstract: Plastic fences where rails are inserted into holes in hollow posts are effectively stiffened by inserting into the hollow post a stiffening device which grips the rails extending into the post, and which is stabilized against movement so as to prevent angular deflection of the rails with the posts in a plane orthogonal to the longitudinal axis of the post.

Abstract: A picket fence and rail mounting system that is easily transformable by the consumer into a variety of aesthetic styles is provided. The system comprises at least an upper and a lower elongate rail. Each rail has a hollow interior defining a substantially I-shaped cross-section including at least a first slot and a second slot. A plurality of pickets are transversely slidable through openings in an upper surface of the rails and a channel in a lower surface. The pickets each have at least a first notch or indentation near a first end and a second notch or indentation near a second end. The distance from the first end to the first notch or indentation is preferably shorter than the distance from the second end to the second notch or indentation. An elongate retaining rod slidable within at least one rail cooperates with a notch or indentation on each picket to secure the picket to the rail.

Abstract: A picket and rail fence and method for constructing the fence using a plurality of pickets with side indentions at locations where the pickets will attach to the rails, rails with open bottoms to allow for flexibility in the angle of incidence between the rails and the pickets, and sliding lock bars with ridges that slide into the rails between the side of the rail and the pickets. The ridges engage the indentions in the pickets to movably secure the pickets to the rails. The rails are provided with upwardly oriented bottom lips along their length that serve to prevent the pickets from moving in a vertical plane perpendicular to the longitudinal axis of the rails and serve to retain the sliding lock bars within the rails.

Abstract: A fence rail clip for attaching a fence rail to a vertical fence post is disclosed. The rail clip has a bracket and a rail connector. The bracket may be secured to the vertical post. The rail connector has a rail receiving receptacle into which an end of a rail may be inserted and the connector is adapted to slidingly engage the bracket. When the position of the rail connector is altered by sliding the rail connector along the bracket, the angle of the rail receiving receptacle is altered, thereby changing the angle at which a rail may be attached to the post.

Abstract: A slotted cap for a corner or support post of a fence, particularly a chain link or “Cyclone” (trademark) or “Hurricane” (trademark) fence. In a preferred embodiment, the slotted fence post cap includes a cylindrical cap wall which is mounted on the upper end of the vertical fence post, and a horizontal adjusting slot is fitted on one side and a fixed nipple is fitted on the opposite side of the cap wall. The fixed nipple receives the horizontal top rail of a fixed fence segment or run, and the adjusting slot is fitted with an adjustable nipple which receives the top rail of an adjustable fence segment or run in construction of the fence. The adjustable nipple is typically bolted to the cap wall at the adjusting slot, and the bolt can be loosened to facilitate adjustment of the adjustable nipple and attached adjustable fence segment into a selected angular relationship with respect to the fixed fence segment.

Abstract: The fencing system of the present invention includes elongate posts and cross-members. The posts are hollow tubular posts having cylindrical cavities along their length and apertures formed in side walls thereof. The apertures are for accepting in mating engagement therein the cross-members when the cross-members extend between adjacent posts in a parallel array of the posts. The cross-members each have a hole in at least one end thereof although usually in both ends, the holes extending laterally through the end or ends of the cross-members. A rod is inserted or insertable into the cylindrical cavity of at least one of the posts for mating into each hole of each of the cross-members when the cross-members are mated into the apertures. Each hole of each of the cross-members is sized to accept the rod in journalled relation therethrough. Thus, a single rod may releasably lock a plurality of cross-members mounted to a single post.

Abstract: The fencing system of the present invention includes elongate posts and cross-members. The posts are hollow tubular posts having cylindrical cavities along their length and apertures formed in side walls thereof. The apertures are for accepting in mating engagement therein the cross-members when the cross-members extend between adjacent posts in a parallel array of the posts. The cross-members each have a hole in at least one end thereof although usually in both ends, the holes extending laterally through the end or ends of the cross-members. A rod is inserted or insertable into the cylindrical cavity of at least one of the posts for mating into each hole of each of the cross-members when the cross-members are mated into the apertures. Each hole of each of the cross-members is sized to accept the rod in journalled relation therethrough. Thus, a single rod may releasably lock a plurality of cross-members mounted to a single post.