Abstract: Disclosed is a barrier, comprising: a plurality of posts; a first beam and a second beam arranged in an end-on relation to one another and extending between respective posts of the plurality of posts, wherein the first beam and second beam are longitudinally displaceable with respect to one another; and, an articulating link connecting the first beam and the second beam, wherein the articulating link translates a longitudinal movement of the first beam in a first direction to a longitudinal movement of the second beam in a second direction.

Abstract: A latch mechanism for a gate has a main support, first and second retention members, and a rotatable latch. The retention members each have a respective key aperture and the respective first and second apertures are spaced along the main support and separated by a gap. The rotatable latch includes a latch portion, one or more key portions which extend through either or both of the first key aperture and second key aperture, and is rotatable about an axis of rotation between a receiving position in which the gate is moveable between an open position and a closed position, or vice versa, and a latched position in which the gate is restrained in the closed position by the latch portion and where the one or more key portions engage with either or both of the first and second retention members to prevent withdrawal of the rotatable latch.

Abstract: A wire rope road safety barrier including at least one wire rope, a plurality of posts configured to be supported in the ground along a roadside or central reservation, the posts including a cut-out provided in respective ones of the posts, and a retainer. The retainer includes an arm for embracing at least half of a circumference of the post whereby the retainer can be held on the post at a position along its length, the arm defining a plane, and a tab extending perpendicularly from the plane of the arm for retaining the at least one wire rope against the post, the tab being configured to yield at a break point at which the tab is attached to the arm when subjected to a lateral force by the at least one wire rope that exceeds a predetermined amount to permit separation of the rope from the barrier within a predetermined impact zone.

Abstract: A perimeter security barrier 1for restraining a vehicle impacting the barrier from a direction substantially perpendicular thereto is described. The barrier comprises a pair of spaced apart end posts 3, 5 rigidly fixed in the ground and intermediate posts 11a, 11c. . . disposed between the end posts are also fixed in the ground. At least one pair of wire ropes 15c, 15d is supported between the end posts and optionally woven around the intermediate posts, the ropes being secured at each end to respective end posts. Energy absorption means 21 is provided at each end for absorbing energy transmitted by the ropes from the impacting vehicle.

Abstract: A retainer (10a, 10b, 10c) for a wire rope road safety barrier, comprising a plurality of posts (14), is provided for supporting one or more wire ropes (12) above the ground. The retainer comprises an arm (16a, 16b) for embracing at least half of a circumference of the post whereby the retainer can be held on the post at a position along its length. The retainer also comprises a frangible or yieldable tab (18) extending from the arm for retaining the wire rope against the post.

Abstract: A retainer (10a, 10b, 10c) for a wire rope road safety barrier, includes a plurality of posts (14), for supporting one or more wire ropes (12) above the ground. The retainer includes an arm (16a, 16b) for embracing at least half of a circumference of the post whereby the retainer can be held on the post at a position along its length. The retainer also includes a frangible or yieldable tab (18) extending from the arm for retaining the wire rope against the post.

Abstract: A road safety barrier having a plurality of ropes supported by posts rigidly mounted on or in the ground is described. Each rope is held in tension against the posts and supported in a longitudinally oriented indentation in a side of the posts. The ropes are released from a post and the post is not pulled from the ground when a vertical force is exerted on the rope. The post may have a circular cross-section and the indentation has a bottom oriented substantially parallel to the ground such that the rope is biased to exit upward out of the indentation. The ropes when weaved are tensioned against the posts and this gives rise to a combined frictional resistance to displacement of the ropes relative to each post along the length of the safety barrier.

Abstract: A road safety barrier having a plurality of ropes supported by posts rigidly mounted on or in the ground is described. Each rope is held in tension against the posts and supported in a notch or groove in a side of the posts. The ropes are released from a post and the post is not pulled from the ground when a vertical force is exerted on the rope. The ropes when weaved are tensioned against the posts and this gives use to a combined frictional resistance to displacement of the ropes relative to each post along the length of the safety barrier. The structure of at least some of the posts and/or their mounting with respect to the ground defines a minimum bending yield strength in a direction along the length of the barrier. This minimum bending yield strength is greater than the bending moment resulting from the combined frictional resistance forces acting on the post.

Abstract: A security barrier (10) comprises a first fence (20) and a second fence (40). The first fence comprises a first series of posts (22) and the second fence comprises a second series of posts (42). The first and second fences are provided adjacent to each other with the first fence being coupled below ground level with a the second fence. A footing having first and second post sockets is also provided for receiving a first post from each of the first and second fences respectively.

Abstract: A road safety barrier having a plurality of ropes supported by posts rigidly mounted on or in the ground is described. Each rope is held in tension against the posts and supported in a notch or groove in a side of the posts. The ropes are released from a post and the post is not pulled from the ground when a vertical force is exerted on the rope. The ropes when weaved are tensioned against the posts and this gives rise to a combined frictional resistance to displacement of the ropes relative to each post along the length of the safety barrier. The structure of at least some of the posts and/or their mounting with respect to the ground defines a minimum bending yield strength in a direction along the length of the barrier. This minimum bending yield strength is greater than the bending moment resulting from the combined frictional resistance forces acting on the post.

Abstract: A retainer (10a, 10b, 10c) for a wire rope road safety barrier, comprising a plurality of posts (14), is provided for supporting one or more wire ropes (12) above the ground. The retainer comprises an arm (16a, 16b) for embracing at least half of a circumference of the post whereby the retainer can be held on the post at a position along its length. The retainer also comprises a frangible or yieldable tab (18) extending from the arm for retaining the wire rope against the post.

Abstract: A road safety barrier having a plurality of ropes supported by posts rigidly mounted on or in the ground is described. Each rope is held in tension against the posts and supported in a longitudinally oriented indentation in a side of the posts. The ropes are released from a post and the post is not pulled from the ground when a vertical force is exerted on the rope. The post may have a circular cross-section and the indentation has a bottom oriented substantially parallel to the ground such that the rope is biased to exit upward out of the indentation. The ropes when weaved are tensioned against the posts and this gives rise to a combined frictional resistance to displacement of the ropes relative to each post along the length of the safety barrier.

Abstract: A crash barrier beam (10) suitable for temporary placement on a road comprises a housing (18) which, in profile, has a laterally extending base (12) for contact with the road. The beam has a narrower central element (14) upwardly extending from the base that terminates in a top portion (16). The exterior of the housing provides a continuous impact surface to an oncoming vehicle and the profile provides stability to the beam on impact. The crash barrier beam (10) has a length defined by a first end (24) and a second end (26, 28). At least one of the first and second ends comprises formations (32, 34) for engagement with corresponding formations (38, 40) on an end of an adjacent beam (10?) so as to facilitate joining of the beams to one another. The formations are configured for the beams to be substantially self-aligning with respect to each other.

Abstract: A perimeter security barrier (1) for restraining a vehicle impacting the barrier from a direction substantially perpendicular thereto is described. The barrier comprises a pair of spaced apart end posts (3, 5) rigidly fixed in the ground and intermediate posts (11a, 11c) disposed between the end posts are also fixed in the ground. At least one pair of wire ropes (15c, 15d) is supported between the end posts and optionally woven around the intermediate posts, the ropes being secured at each end to respective end posts. Energy absorption means (21) is provided at each end for absorbing energy transmitted by the ropes from the impacting vehicle.

Abstract: A road safety barrier having a plurality of ropes supported by posts rigidly mounted on or in the ground is described. Each rope is held in tension against the posts and supported in a notch or groove in a side of the posts. The ropes are released from a post and the post is not pulled from the ground when a vertical force is exerted on the rope. The ropes when weaved are tensioned against the posts and this gives rise to a combined frictional resistance to displacement of the ropes relative to each post along the length of the safety barrier. The structure of at least some of the posts and/or their mounting with respect to the ground defines a minimum bending yield strength in a direction along the length of the barrier. This minimum bending yield strength is greater than the bending moment resulting from the combined frictional resistance forces acting on the post.

Abstract: A road safety barrier comprising a series of posts rigidly mounted on or in the ground, an anchor body (9) fixed in or on the ground beyond the series of posts, and at least one rope (1-4) which is supported by the posts so as to extend along the series of posts and which has an end portion (8) extending downwards from the last post (6a) of the series towards the anchor body (9). A terminal (19) is fixed on the extremity (8e) of the end portion (8) of the rope. An elongate tie bar 21 has a first end part connected to the anchor body (9) and a second end part releasably connected to the terminal (19) so that the elongate tie bar is in line with the terminal and the end portion (8) of the rope. The tie bar (21) reduces the risk of damage to the terminal (19) in the event of vehicular impact, and is easily replaceable. It also facilitates disengagement of the rope from the anchor body (9) if a vehicle becomes trapped 1o the end portion (8) of the rope during a collision.