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 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 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 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 barrier is formed from a plurality of posts and a plurality of rails. Each post has an I-shaped cross section, with a pair of double-walled flanges separated by a single-walled web. Each rail is a channel-shaped member having an intermediate portion and opposed end portions. Each end portion has a rounded convex edge. The intermediate portion includes a flat section to which pickets or a fencing fabric may be attached. Each end portion also includes a flat section, which is recessed relative to the flat section of the intermediate portion. A rail is connected to a post by inserting the rail's end portion into the channel-shaped region of the post. The flat section of the rail's end portion engages the planar inner side of one of the post's flanges. Fasteners are inserted into aligned openings in the flange and the flat section to connect the rail to the post. When assembled, the post flanges and the flat section of the intermediate portion of the rail are coplanar.

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 barrier is formed from a plurality of posts and a plurality of rails. Each post has an I-shaped cross section, with a pair of double-walled flanges separated by a single-walled web. Each rail is a channel-shaped member having an intermediate portion and opposed end portions. Each end portion has a rounded convex edge. The intermediate portion includes a flat section to which pickets or a fencing fabric may be attached. Each end portion also includes a flat section, which is recessed relative to the flat section of the intermediate portion. A rail is connected to a post by inserting the rail's end portion into the channel-shaped region of the post. The flat section of the rail's end portion engages the planar inner side of one of the post's flanges. Fasteners are inserted into aligned openings in the flange and the flat section to connect the rail to the post. When assembled, the post flanges and the flat section of the intermediate portion of the rail are coplanar.

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 resilient clip adapted for internal installation within a rail having a longitudinally extending internal gap. The clip includes a lower leg that engages the base of the rail, and an intermediate leg, which engages a side wall of the rail. An indented upper leg of the clip is capable of clamping an elongate line, such as an electrical or communication line, in an elevated position in the upper section of the rail. Plural clips may be installed in the rail to support such a line at multiple spaced points along its length. A strengthening cable may be installed in the lower section of the rail, in overlying relationship to the lower legs of the clips.

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: An integrally formed rail for use with a fence panel. The rail is formed to define a top platform, first and second side walls, and a bottom platform. The side walls extend from the top platform and past the bottom platform. The top platform and the bottom platform define the boundaries of a rail channel. The top platform and the bottom platform define picket openings. The rail is formed by extruding the platforms and side walls from an extrudable material such as aluminum. The picket openings can be formed by inserting a mandrel in the rail channel and stamping the openings. Fence pickets are inserted through the picket openings to construct the fence panel. A retaining rod is inserted in the rail channel and through openings in the pickets to retain the pickets in the panel.

Abstract: A barbed tape is formed from an elongate strip having laterally spaced first side and second sides. A series of sharpened barb clusters project from at least one side, and preferably both sides, of the strip. The area of the strip between each adjacent pair of barb clusters is characterized by a plurality of transverse corrugations formed adjacent the first side of the strip, and preferably extending about to the strip centerline. A continuous longitudinally extended strengthening rib may be formed on the uncorrugated second side of the strip.

Abstract: A high security palisade fence is formed from a plurality of vertical posts, each of which is characterized by a pair of flange sections which are joined by an intermediate flat web section having a double-walled structure. One or more cable passageways are formed in each post. Each adjacent pair of posts is interconnected by a plurality of parallel rails. Each rail is formed with an internal tray, within which a strengthening cable may extend. Vertical pickets are attached to the rails. The pickets are preferably characterized by a W-shaped profile, and preferably include longitudinal strengthening ribs. Each picket has a flat attachment surface in which a plurality of subsurface recesses are formed.

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 high security fence which includes strengthening cables. The cables extend internally within the aligned rails of the fence, and through cable passageways formed in the posts which support the fence rails. The cables are anchored adjacent each end by a substrate. Anchors are installed on each end of the cable to resist pullout of the cable from the substrate, which may be a concrete-filled bollard post installed in a buried concrete deadman.

Abstract: A picket assembly adapted for installation on a post of a barrier, such as a corner post. The picket assembly comprises at least one post picket having an upper portion and a lower portion. The lower portion of each post picket is characterized by a rectilinear profile. The picket assembly further comprises a post closure, which is formed from a cap and a bracket. The cap is adapted to fit around the upper end of the post and is provided with recesses sized to clearingly receive the lower portion of a post picket therethrough. The recess are provided in a number equalling the number of post pickets. The bracket of the post closure extends from the lower surface of the cap can be received within the open upper end of the post. The bracket provides an attachment surface that bracingly engages the lower portion of each post picket when that post picket is received through a recess of the cap.