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US 4,943,035 AGranted
Barricade
AssigneeAmplas, Inc.
InventorsKenneth L. Thomson, Hank Fenton, Norbert Tesch
Life of this patent
Estimating the term…
Abstract
A barricade is provided for use at construction sites, on roadways and highways, and the like, or for crowd control, for example, at the scene of an emergency. The barricade includes an elongated, hollow crossbar member that comprises one or more elongated, hollow interconnecting sections, with each end of the crossbar member mounted in a collapsible A-frame support. The barricade can be collapsed from its fully-assembled, in-use configuration into a compact unit or package which takes up relatively little space so that it can be conveniently transported from place to place.
Claims9
A barricade comprising:
- (a) an elongated, hollow crossbar member comprising at least one elongated, inter-connecting hollow section interconnectable with other such elongated hollow sections and formed from plastic by a molding process, each such section having first and second elongated sides, first and second edges connecting the sides, and a generally rectangular cross-section transverse to its length, one end of each such section having at least one male extension and its opposite end having at least one female receptacle for receiving and securing the male extension of a mating section, and at least one identation in the first elongated side formed during the molding process, wherein such an indentation extends to the second elongated side such that an interior surface of the indentation on the first elongated side is fused to an interior surface of the second elongated side;
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- (b) a collapsible A-frame support for each end of the elongated, hollow crossbar member, each such collapsible A-frame support comprising a pair of hollow legs, with each leg having a bottom end for contact with the ground surface and a top end which includes a tang and notch, with the tang and notch on one leg facing in one direction and the tang and notch on the other leg facing in the opposite direction, the legs being pivotally connected together below their top ends, so that when the legs are fully opened, their top ends are engaged with the tang of each such leg engaging the notch of the other leg, thereby locking the top ends of the legs together to thereby define an opening configured to receive one end of the elongated, hollow crossbar member.
A barricade comprising:
- (a) an elongated, hollow crossbar member comprising at least one elongated, inter-connecting hollow section interconnectable with other such elongated hollow sections and formed from plastic by a molding process, each such section having first and second elongated sides, first and second edges connecting the sides, and a generally rectangular cross-section transverse to its length, one end of each such section having at least one male extension and its opposite end having at least one female receptacle for receiving and securing the male extension of a mating section, and at least one indentation in the first elongated side formed during the molding process, wherein such an indentation extends to the second elongated side such that an interior surface of the indentation on the first elongated side is fused to an interior surface of the opposite elongated side, and wherein each such elongated crossbar section includes a pair of tapered grooves in at least one of the edges, spaced apart from each other along the length of the section, a first one of the grooves configured to mate with a bottom surface of the opening defined by an engaged leg top ends of a first A-frame support, and the second one of the grooves configured to mate with a bottom surface of an opening defined by engaged leg top ends of a second A-frame support.
A barricade package comprising:
- (a) a plurality of hollow crossbar sections, each having first and second elongated sides, first and second edges connecting the sides, with a groove through each such edge, one end of each section having at least one male extension and its opposite end having at least one female receptacle configured to receive and secure the male extension of a mating section, so that when two or more such sections are joined together, they form an elongated, hollow crossbar member, the crossbar sections being stacked one on top of the other on their elongated sides, with the grooves in the edges lined up with each other;
- (b) a pair of collapsible A-frame supports, each provided to mount one end of the elongated, hollow crossbar member when the barricade is erected, such a collapsible support comprising a pair of hollow legs, each having a bottom end for contact with the ground surface and one of the legs having a top end configured to engage a top end of the other leg, the legs pivotally connected together below their top ends so that when the legs are fully open, their top ends are engaged and define an opening configured to receive one end of the elongated, hollow crossbar member, the plurality of stacked together crossbar sections being sandwiched between one A-frame support under the crossbar section stack and the other A-frame support on top of the crossbar section stack, with the legs of the stacked A-frame supports in their closed condition extending along the length of the crossbar sections, each such leg having a slot through it in registration with the lined-up grooves in the crossbar section edges;
- (c) a U-shaped locking bracket, with a base of the bracket extending below the A-frame support under the stack, the sides of the bracket extending through the slots in the legs of the bottom A-frame support, through the lined-up crossbar section grooves, and through the slots in the legs of the A-frame support on the top of the stack so that the tops of the bracket sides extend above the top A-frame support;
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- (d) means for latching together the top portions of the bracket sides so that the A-frame supports and crossbar sections are fastened together securely for transportation and storage.
2 more elements
Dependencies are inferred from the claim text.