|Publication number||US3563502 A|
|Publication date||Feb 16, 1971|
|Filing date||Dec 4, 1968|
|Priority date||Dec 4, 1968|
|Publication number||US 3563502 A, US 3563502A, US-A-3563502, US3563502 A, US3563502A|
|Inventors||Dayson Arthur R|
|Original Assignee||Harsco Corp|
|Export Citation||BiBTeX, EndNote, RefMan|
|Patent Citations (5), Referenced by (43), Classifications (5)|
|External Links: USPTO, USPTO Assignment, Espacenet|
United States Patent  Inventor Arthur R. Dayson Hendersonville, Tenn.  App]. No. 781,108  Filed Dec. 4, 1968  Patented Feb. 16, 1971  Assignee Harsco Corporation Harrisburg, Pa.
 ANCHOR BASE FOR LIGHTING STANDARDS 3 Claims, 4 Drawing Figs.  US. Cl. 248/44; 52/98, 52/298  Int. Cl E04h 12/22  Field of Search 248/44, 38, l88.l, 346,158,43;116/173;52/298, 98; 240/84; 137/272; 248/45  References Cited UNITED STATES PATENTS 1,499,445 7/ l 924 Clay 52/98 3 ,343,322 9/1967 Lurkis et al 240/84X 3,410,995 11/1968 Gray 240/84 3,418,967 12/1968 Donkersloot FOREIGN PATENTS 1,015,719 8/1952 France .4 248/44 Primary Examiner-Roy Dr Frazier Assistant Examiner- Frank Domotor Attorney-Cameron, Kerkam and Sutton ABSTRACT: An anchor base for lighting or other standards has a cast construction including a hollow cylinder for receiving the standard and a generally square base supporting the cylinder. Four integrally cast buttresses extend from the base partway up the cylinder to strengthen the same. The base is open interiorally and slots for holddown bolts extend from outside of the cylinder through the base and through the cylinder and open into the open base. Stops are provided within the cylinder for limiting the telescoping movement of the standard.
, 1v ANCHOR BASE FOR LIGHTING STANDARDS BACKGROUND OF THE INVENTION The present invention relates to anchor bases for lighting or other standards and more particularly to such bases which shear off or break readily upon impact to prevent excessive damage to vehicles or other objects striking the standard. Heretofore, various anchor bases for lighting or other standards have been proposed which are intended to shear off or break readily upon impact and in which the base is bolted to suitable support such as a concrete flat in which the bolts are embedded. However, these prior bases, if strong enough to support the standard and light or other object mounted on the standard, are usually of such rugged construction as to resist shear or breaking upon impact to the'damage of the striking object or are so weak as to provide insufficient support for the standard.
The present invention overcomes these deficiencies while providing a unitary cast base which has a pleasing appearance and is relatively cheap to manufacture,
Known prior art includes anchor bases for standards having a vertically extending hollow cylindrical standard receiver which cylinder is mounted upon a base and is laterally suptures, as socket shaft supporting type with frangible section or means.
SUMMARY OF THE INVENTION The anchor base of thepresent invention for lighting or other standards includes a hollow vertical cylinder receiving the standard which cylinder is formed integrally with a base and with buttresses integrally formed with and extending from the base to the cylinder. The base is hollow and opens into the hollow of the cylinder. Slots for holddown bolts extend through the base and through the cylinder and open into the hollow interior of the base. A hand hole may be formed in one of the buttresses for access to the interior of the cylinder and stops may be provided within the cylinder limiting the telescoping engagement of the standard within the cylinder. Frangible ears form the sides of the slots within the base.
BRIEF DESCRIPTION OF THE DRAWING In the accompanying drawings, in which like reference characters indicate like parts, FIG. I is an elevational view of a preferred embodiment of the anchor base of the present invention as seen from the side including the hand hole;
FIG. 2 is a view from above of theembodiment of FIG. I;
FIG. 3 is a bottom view of the embodiment of FIG. 1; and
FIG. 4 is a cross-sectional view of the. embodiment of FIG. 1 on the line 4-4 of FIG. 2.
DESCRIPTION OF THE PREFERRED EMBODIMENT Referring now to the several FIGS., the present anchor base for lighting or other standards of the preferred embodiment there shown comprises a generally square base 10 which may be rounded at its comers 11 and is provided with a central opening 12. Integrally cast with base 10 is the hollow cylinder standard support 13 of suitably shaped cross section here shown as circular which is provided interiorally with stops 14 to limit the telescoping engagement of the standard therein. Four buttresses 15, l6, l7 and 18 are cast integrally with base 10 and with cylinder 13 and extend upwardly from base 10 to about midway of cylinder 13 to brace the same with respect to base I0. Buttress 18 may be provided with an aperture or hand hole 19 providing access to the interior of cylinder 13 and aperture 19 may be closed by any suitable plate 20.
Four bolt slots 21, 22, 23 and 24, arranged in opposed pairs on the diagonals of base 10, are cut through base 10, open throu h cylinder 13 as seen in FIG. I at 25 and 26 and as seen in F l 4 at 27, and open into the central opening 12 of base Base 10 may be further cut away at 28, 29, 30 and 31, as seen in FIG. 3, to provide cars such as ear's 32 and 33 extending on each side of slot 24. Ears 32 and 33, and the similar ears for the other slots 21, 22 and 23, are frangible upon impact.
As is the case with known anchori bases for lighting or other standards, the anchor base of the present invention is secured to a suitable pad of concrete or other material in the ground with the anchor base secured to the concrete pad by bolts embedded in the pad. In the present invention, the bolts, four in number, are so mounted in the concrete pad as to extend through the slots 2l24 and suitable washers and nuts screwed on the bolts engage the top of base 10 outside of cylinder 13 and between the adjacent buttresses 15-48.
With the anchor base of the present concept bolted to its concrete pad and with the standard in place in support I3,
should the standard receive an impact as by a vehicular collision, the anchor base will slide on the concrete pad along the line of impact so that the bolts in the slots away from the point of impact move toward and into the opening 12 of base l0 and the remaining force of theimpact is then taken by the bolts adjacent the point of impact which force then breaks the ears forming the bolt slots. The base and standard are then freed from the concrete pad and are moved out of the way by the impacting vehicle offering minimum resistance upon impact.
The present invention therefore satisfies the objectives discussed above.
I claim: v
I. An anchor base for standards comprising an integrally cast base, an upstanding hollowcylinder receiving the standard extending from said base, integrally cast buttresses extending between said base and said cylinder, said base having a central opening, and bolt slots formed in said base exterior of said cylinder between said buttresses and opening through said cylinder into said central opening in said base, the central opening of said base adjacent said slots forming inwardly directed frangible ears extendingeach of said slots into the central opening of said base.
2. An anchor base as described'in c laim 1, including a hand hole opening through one of said buttresses into said cylinder.
3. An anchor base as described in claim I, said base being square and said slots being disposed in opposed pairs on the diagonals of the square.
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|U.S. Classification||52/98, 52/298|