Signal light assembly

Abstract

An all welded signal light assembly transportable in secure, stacked condition with a plurality of all welded signal light assemblies of like construction.

Claims

1. A signal light assembly transportable in stacked condition with a plurality of signal light assemblies for unstacking and installation on foundations at selected locations, said signal light assembly including an elongated mast having a mast base, an elongated ladder extending along said elongated mast and secured thereto, said ladder having a ladder base positioned adjacent to said mast base and said mast base and said ladder base together forming a unitary base, and at least one platform affixed to said mast and to said ladder at a location spaced from said unitary base, said unitary base attachable directly to a foundation with said elongated mast and said ladder positioned spaced from one another and at two spaced points of contact between the mast and ladder of the signal light assembly and the unitary base stabilizing the signal light assembly on the foundation, said signal light assembly additionally including fork truck lift structures attached to said mast for engagement by a fork lift truck to lift and move the signal light assembly.

2. The signal light assembly of claim 1 wherein said fork truck lift structures are located at or closely adjacent to the center of gravity of the signal light assembly during lifting or transport by a fork lift truck.

3. The signal light assembly of claim 1 adapted for installation at said foundation by anchor bolts extending through said unitary base into said foundation.

Description

BRIEF DESCRIPTION OF DRAWINGS

(1) FIG. 1 is a front elevation view of a signal light assembly incorporating the teachings of the present invention supporting four signal lights;

(2) FIG. 2 is a top plan view of the assembly without signal lights;

(3) FIG. 3 is a side elevation view of the assembly without signal lights;

(4) FIG. 4 is a back elevation view of the assembly without signal lights;

(5) FIG. 5 is a top perspective view of the assembly with signal lights;

(6) FIG. 6 is a front elevation view of the mast and platforms of the assembly;

(7) FIG. 7 is a side elevation view of the mast and platforms of the assembly;

(8) FIG. 8 is a top perspective view of the mast and platforms of the assembly;

(9) FIG. 9 is a side elevation view of the welded mast, platforms and ladder of the assembly;

(10) FIG. 10 is a back elevation view of the welded mast, platforms and ladder of the assembly;

(11) FIG. 11 is a perspective view of the welded mast, platforms and ladder of the assembly;

(12) FIG. 12 is a reduced size bottom view illustrating a stack of assemblies suitable for storage and transport;

(13) FIG. 13 is a side elevation view showing two assemblies in stacked condition and illustrating end stacking brackets at the bases of the masts in engagement when platforms of the masts are in engagement; and

(14) FIG. 14 illustrates four stacked assemblies.

BEST MODE FOR CARRYING OUT THE INVENTION

(15) Referring now to the drawings, an all welded signal light assembly constructed in accordance with the teachings of the present invention is designated by reference numeral 10. Signal light assembly 10 is suitably constructed of aluminum and includes an elongated mast 12 having a mast base 14, an elongated ladder 16 extending along the elongated mast. The ladder 16 has a ladder base 18 positioned adjacent to the mast base 14 and spaced therefrom. The ladder is attached to the mast at locations along the lengths thereof and cooperates therewith to essentially provide an I-beam support increasing the load ability of the overall assembly.

(16) The ladder base may be attached directly to an existing foundation by anchor bolts. The mast base 14 is also attached via anchor bolts or other suitable mechanical expedient to the foundation.

(17) The all welded signal light assembly 10 also includes platforms 22 attached to and interconnecting the mast and the ladder at spaced locations therealong.

(18) As shown in FIGS. 1 and 5, suitable signals such as signal lights 24 are attached to the assembly 10 at or adjacent to the platforms. These signals may be secured to the signal light assembly prior to the assembly being fully erected and installed at the foundation or thereafter.

(19) An important aspect of the present invention resides in the fact that the signal light assembly 10 may be transported in stacked condition with a plurality of all welded signal light assemblies of like construction. For example, the assemblies may be stacked and transported by truck, the all welded signal light assemblies substantially unstacked and separately installed at selected locations. FIGS. 12-14 show a stacked plurality of all welded signal light assemblies 10.

(20) Another unique feature of the signal light assembly 10 is incorporation of forklift pads 28. The forklift pads 28 welded to the mast enable the assemblies to be readily moved, stacked and unstacked. This is in stark contrast to the established prior art methods of using slings or of supporting assemblies in unsecured and unstable fashion on the upper surface arms of fork trucks or other movable supports while being loaded and unloaded.

(21) Incorporation of the forklift pads 28 on the mast of signal light assembly 10 provides a safety feature not used in prior art assemblies by creating a stable center of gravity and preventing the assembly from falling during loading and unloading, thus preventing the possibility of a worker being injured during those operations.

(22) The all welded signal light assembly has a substantially uniform maximum cross-sectional dimension at opposed end portions thereof to facilitate stacking and to ensure that the desired number of assemblies are accommodated on a semi-trailer or other delivery platform. More particularly, the outermost portions of the assembly are defined by opposed outer surfaces of the platforms 22. Referring to FIG. 12, for shipping purposes, a stacking bracket 30 is temporarily secured to the mast base so that the mast base is also supported to provide stability during shipment and compact efficient storage along with other signal light assemblies of like character. That is, stacking brackets 30 of adjacent stacked signal light assemblies will be in engagement during shipping when opposed outer surfaces of the platforms 22 of adjacent assemblies are in engagement.

(23) When stacked, the signal light assemblies are secured together by ties such as bands or straps 32 wrapped about adjacent masts at predetermined mast locations between spaced ends of the masts. FIG. 14 shows stacking brackets in the form of shipping covers attached to the mast bases.