Supports – Stand – Plural leg
Patent
1993-06-07
1994-11-08
Chin-Shue, Alvin C.
Supports
Stand
Plural leg
40606, 40611, 40612, 182155, 182186, 248176, G09F 1500
Patent
active
053620208
DESCRIPTION:
BRIEF SUMMARY
FIELD OF THE INVENTION
THIS INVENTION relates to a support structure for road warning signs such as "WORKMEN AHEAD" signs and the like.
BACKGROUND OF THE INVENTION
Conventional signs of this type at present in use are fixedly mounted on relatively small diameter spindly metal legs, have an inherent high centre of gravity and as such are susceptible to being blown over by the wind or by the suction induced by passing vehicles.
Furthermore as these known supports and signs are permanently fixed together it has been necessary in the past to provide the combination of support and sign for each different sign.
It is an object of the present invention to provide a support structure for a road warning sign which has a configuration providing a relatively low centre of gravity, is not susceptible to being blown over and which can singly mount any desired sign in a simple yet effective releasable locking manner thereby greatly reducing the cost of a multiplicity of support structures with various fixed signs and greatly reducing the transporting space required by road working gangs.
It is a further object of the present invention to provide a support structure for a road warning sign which may be folded into a compact configuration when not in use to minimum packaging and handling requirements.
SUMMARY OF THE INVENTION
According to the invention, there is provided a support structure for a road warning sign comprising a pair of elongated crossbar members hingedly connected on the underside thereof, socket members secured adjacent each end of said crossbar members, support leg members pivotally mounted in said socket members so as to extend downwards and outwards of and substantially normal to the plane of said crossbar members in a ground engaging position and foldable along said crossbar members in a demountable position whereby when said leg members are swung outwardly to a ground engaging position said hingedly connected crossbar members close to secure therebetween a sheet material road sign.
According to a further feature of the invention the legs of a pair of leg members pivotally mounted at one end of the crossbar members are offset along part of their length so as to nest in compact form with the other pair of leg members when folded to the demountable position.
According to another feature of the invention, a pair of leg members pivotally mounted at each end of the crossbar members are pivotally mounted in their socket members at a distance from the crossbar members greater than the distance of the pivotal mounting of the other pair of leg members so as to nest against said other pair of leg members in compact form when the structure is folded to the demountable position.
In order that the invention and its manner of performance may be more fully understood reference will now be made to embodiments of the invention as illustrated in the accompanying drawings.
DESCRIPTION OF THE DRAWINGS
FIG. 1 is a perspective view of one embodiment of the support structure with a road sign located thereon;
FIG. 2 is a plan view of the support structure of FIG. 1 showing the leg members on one side in extended ground engaging position and both sets of leg members in demountable folded position in broken line;
FIG. 3 is an end view of the support structure of FIG. 1 showing the mounting of the support leg members;
FIG. 4 is a plan view of an end of the support structure of FIG. 1;
FIG. 5 is a view similar to FIG. 2 of another embodiment of the invention;
FIG. 6 is a sectional end view taken along the line 6--6 of FIG. 5;
FIG. 7 is an end view taken along the line 7--7 of FIG. 5; and
FIG. 8 is a plan view of the end of the support structure illustrated in FIG. 7.
DESCRIPTION OF THE PREFERRED EMBODIMENTS
Referring to FIG. 1 to 5 of the drawings the road sign support structure of this illustrated embodiment comprises a pair of elongated angular crossbar members 5 hingedly connected at 6 and comprising substantially horizontal extending bar members 7 having outwardly extending angled members 8 at the upper ends the
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Berger Derek J.
Chin-Shue Alvin C.
Doyle & Brown Pipelines Pty. Ltd.
Farley Walter C.
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