A-frame barricade

Abstract

A pair of A-frame members of molded plastic support an elongated beam extending through openings in apex portions thereof. Pockets are provided in the outsides of two legs of each A-frame member into which elongated weight cartridges are placed to be securely held to the legs. The legs and pockets are so formed that with a low volume and weight, a high strength and rigidity of the legs is achieved, a substantial contribution being made by the weight cartridges. The weights of the cartridges are used to resist tilting movement of the barricade and to achieve stability with a high degree of efficiency. The weight cartridges are preferably blow-molded plastic tubes filed with slag or sand and most preferably are interchangeable with cartridges currently in use in other applications. For additional stability, the legs of each A-frame member may be secured to an elongated member, to a plastic tube mounted there-between and/or to a blow-molded panel that is adapted to be filled with a weighty material and face in a longitudinal direction. Also, for additional strength and stability, elongated beams may be hung on lower portions of legs of the pair of A-frame members.

Description

CROSS-REFERENCE TO RELATED APPLICATION[0001]Applicant claims the priority benefit of Provisional Application No. 60 / 937,777 filed Jun. 29, 2007 and entitled “A-FRAME BARRICADE”.[0002]The invention disclosed herein is not the result of any federally sponsored research or development activities.BACKGROUND OF THE INVENTION[0003]Barricade structures of the prior art include saw-horse and A-frame types of structures. Saw-horse structures typically include two units that are pivotally connected for movement between a folded condition against each other and an operative condition in inverted V-relation. In an early type of saw-horse structure, many of which are still in current use, each unit is in the form of a subassembly with wood panels secured to a pair of metal legs with bolts connecting the legs to form the pivotal connection. The Nunn U.S. Pat. No. 3,015,804 issued Jan. 2, 1962 shows a barricade including spaced apart leg units each consisting of a pair of hingedly connected legs a...

AI Technical Summary

Benefits of technology

[0012]In accordance with the invention, recesses are formed in the outsides of legs of A-frame members to provide pockets into which elongated weight cartridges are placed to be securely held to the leg portions. Preferably, each cartridge engages a rear wall of a leg, an outer wall of the leg and an intermediate wall spaced outwardly from an inner wall of the leg. The cartridge acts in compression between the outer wall and the intermediate wall to oppose bending of the leg. For additional strength and rigidly, angularly extending walls are provided the intermediate wall and the inner wall, also between outer and inner walls above the weight cartridge. The weights of the cartridges are used to resist tilting movement of the barricade and to achieve stability with a high degree of efficiency. The distance between a fulcrum point at the lower end of each leg porti...

Problems solved by technology

The addition of the aforementioned weight cartridges substantially reduces the effect of winds as to tipping over and movement of the barricades.

Howe...

Images