A modular element has an internally hollow body (2) made of plasstic material and exhibiting a parallelepiped horizontally-disposed configuration with a transverse section symmetrically diverging from a top portion (4) to a base portion (5). The opposite end surfaces (9, 11) of the body (2) are respectively provided with a coupling lug (8) and an engagement seat (10) matching the shape of said coupling lug. The coupling lug (8) of each modular element (1) is adaped to be fitted in the engagement seat (10) of a contiguous modular element (1b) for the purpose of consecutively connecting several modular elements together. In an alternative embodiment a modular element (12) is provided, at its opposite sides, with two coupling lugs (8) each adapted to be fitted in an engagement seat (10) exhibited by a contiguous modular element (13).
A portable crowd control barrier for use in sporting or entertainment events having lightweight body members formed of a resiliently deformable material and each defining an interior chamber and having slots formed in endwalls thereof to receive wooden studs such that the introduction of liquid into the interior chambers deforms the body members, clamping the walls of the slots against the studs and locking the system in place.
A modular fence system. The system includes fence planks designed for insertion into open channels of upper and lower fence rails. The fence rails are supported in a horizontal orientation between intermittent fence posts, with the fence planks extending vertically between the rails. The planks include resilient protrusions at their upper ends. The protrusions of the planks are designed to fit into internal passages formed in the open channels of the upper fence rail, into engagement with ledges defining the passages, to inhibit inadvertent removal of the planks from the upper rail.
Safety barriers for directing and separating traffic on roads, highways and construction sites which include through-holes or passageways for animals to pass through. The through-holes or passageways are configured so that distal edges of the through-hole or passageway openings downstream from traffic flow are obtusely angled with respect to adjacent sides of the barriers, and thereby able to deflect vehicles which might strike the barriers at the openings. The through-holes or passageways allow small animals to pass through the barriers and thereby escape being struck by vehicles. The through-holes or passageways can include sloped bottoms to prevent animals from nesting therein.
A device for imprinting patterns on concrete is formed of a lightweight cylindrical member with a raised grid pattern thereon for forming the impressions. The cylindrical member is provided with a handle which projects laterally of the cylindrical member to permit the cylindrical member to be guided by a person walking alongside the cylinder. A cylinder can be used immediately after a concrete slab has been poured and smoothed.
A modular fence system. The system includes fence planks designed for insertion into open channels of upper and lower fence rails. The fence rails are supported in a horizontal orientation between intermittent fence posts, with the open channels facing toward a vertical direction and with the fence planks extending vertically between the rails and into the channels. The planks preferably include resilient protrusions at their upper ends. The protrusions of the planks are designed to fit into internal passages formed in the open channels of the upper fence rail, into engagement with ledges defining the passages, to inhibit inadvertent removal of the planks from the upper rail. The fence rails can also be used in a different way and in a different position, in which the open channels face toward a horizontal direction, with an elongate cap coupled to the rail to cover the open channel. Plank members are coupled to the cap such that the cap resides between the plank members and the rail.
