Patent ID: 12259118

ELEMENT LIST

1. Bollard2. Driver housing3. Driver housing cover4. Spacer/s ring/s6. Through bolt7. Top cover bolt8. Top cover through bore9. Top cover bolt threaded bore10. Driver housing through bolt bore11. Driver housing power or power and data receptacle12. Power or power and data conductor cable13. Heatsink section14. Heatsink light source retaining flat surface15. Fins16. Heatsink through bolt bore17. Light source module18. Lens19. Lamp dedicated nano-optical lens20. Central channel opening21. Base support section22. Base support threaded bore23. Base support wall24. IOT device25. Light source driver26. Base support securing bolt27. Base plate channel threaded bore28. Anchoring plate assembly29. Guiding channel30. Junction box31. Junction box anchoring to plate bore32. Base plate anchor bolt33. Junction box cover with receptacle36. Field of illumination37. Sub-field of illumination38. Glare angle39. Dark sky cut-off angle40. Human41. Substrate42. Light source43. Air gap44. Lamp/s45. Walkway48. Sub-area of illumination49. Lamp center beam50. Lip51. Light source module screw52. Light source module bore53. Anchor bolt nut/s

DETAILED DESCRIPTION

Advances in computerized optical lens design and manufacturing technology today overcome technological limitations of light optics provided by a legacy bollard design. Embodiments of a bollard1may use light source42, the LED, is planar, having a beam pattern spread of approximately 120° in its natural state. When coupled with a lamp dedicated nano-optical lens19, the beam may be configured to be reduced to as low as a 1° spread angle with relatively low losses.

In general, the smaller the light source42, the more efficient it can be. Therefore, an array of lamps44, which are reduced form LED lamps, coupled to a substrate41and having a plurality of lamp dedicated nano-optical lenses19over the lamps can be pre-configured as a light source module17capable of efficiently and uniformly illuminating sub-fields of illumination37near and far.

The bollard of the present disclosure includes a base support section21, a heatsink section13, and a driver housing2. The base support section21is coupled below to a ground surface and above to the heatsink13. The heatsink13retains on its exterior heatsink light source retaining flat surfaces14a plurality of light source modules17. The heatsink13is coupled to the base support section21below and the driver housing2above.

The driver housing2retains the light source driver25and/or other input/output electronic devices. These devices may be configured to include at least one of: a camera, a processor, resident memory, code, back-up power storage, and a transceiver. Through bolts6inside the driver housing2can mechanically engage the heatsink13and the base support section21to the driver housing2. A detachable power conductors' or power and data conductors' cable12extend from the inside of the bottom of the base support section21, through the interior of the heatsink13secured to the bottom of the driver housing2.

The bollard1includes an air gap43opening between the heatsink13and both the driver housing2and the base support section21. In other embodiments, the walls of the heatsink13, on top or bottom of the heatsink13, may define the air gap43openings. Orientation and positioning of the heatsink light source retaining flat surfaces14of the light source modules17in relation to the sub-fields of illumination37is quintessential for this innovation. The heatsink's13profile form driven by optical considerations is novel. This embodiment accentuates the novelty of the heatsink's13exterior profile by extending the form to the driver housing2above and the base support section21below, giving the bollard1assembly a new appearance where form follows function.

To attain best performance, the light source modules'17orientation and/or orientation and tilt angles are pre-configured in relation to the sub-fields to be illuminated37. Attaining such performance mandates that the lamp center beam49is positioned as close as possible to a right angle in relation to its dedicated nano-optical lens19. A shallower angle light beam either requires a secondary optics or a good portion of the emitted light is absorbed into the optical lens. Both scenarios are discouraged for efficacy losses. To optimally orient or orient and tilt the bollard's1light source modules17in relation to their respective sub-fields of illumination37requires the light source modules' substrates41to be coupled to the heatsink13with reciprocating heatsink light source retaining flat surfaces'14pre-configured orientation and/or tilt angles, having sufficient surface area to dissipate the module's17lamp heat generated. In other words, a profile of the heatsink13is configured to optimize illumination capabilities of the bollard1.

The heatsink13may be made of metallic or non-metallic material. The heatsink13includes a predefined number of exterior heatsink light source retaining flat surfaces14, predefined width, height, and tilt angle. Interior of the heatsink13is configured to induce cooling airflow having at least one central channel opening20extending through the heatsink13having bottom and top openings. In the present embodiment, the heatsink employs a passive cooling method of light source heat dissipation as described in U.S. Pat. No. 8,931,608.

In one embodiment, cool air enters an air gap43from below the heatsink section13rising through at least one central channel opening20inside and exiting through an air gap43opening on top of the heatsink13. The air gaps43shown above and below the heatsink13are formed by spacer rings4inserted into through bolts6that couple the heatsink13to the base support section21and the driver housing2. The spacer rings4may be coupled to a screen5that allows for air flow while preventing insects and/or debris to enter the bollard's1interior. In yet another embodiment, cool air enters from below the heatsink13and/or opening/s in the bottom walls of the heatsink section13rising through at least one central channel opening20inside and exiting through opening/s at the top of the heatsink13and/or opening/s at the top exterior wall of the heatsink13. In yet another embodiment, air cooling openings may be deployed.

In one embodiment, moisture may travel through the heatsink section13and the base support structure21and evacuate from below, with no exposure to the embodiment's electrical components. In another embodiment, the bollard1assembly is impervious to moisture penetration despite having air cooling vents.

The driver housing2is located at the top of the bollard1. In this embodiment, an air gap43below the driver housing2enables the evacuation of hot air generated by the heatsink13light source modules17below. The driver housing2employs a top cover3having two top cover screws7mechanically securing the driver housing cover3to the driver housing2. The driver housing2enclosure retains at least one of a light source driver25and/or other input/output electronic devices. Through bolts6inside the driver housing2may couple the assembly's key elements mechanically joining the heatsink13and the base support section21to the driver housing2. A detachable power or power and data conductors' cable12extends from the inside a junction box cover receptacle33at the bottom of the base support section21, through the interior of the heatsink13secured to the bottom of the driver housing2. The power or power and data conductors cable12, employing a weather seal tight type power cord, may be connected quickly, resistant to the elements and rated for exterior use.

The base support section21is an elongated structural member that secures the entire bollard1assembly to a surface below. The height of the section is configured in relation to the light source modules'17pre-configured sub-fields of illumination37. In other words, in calculating the light emittance over the field of illumination36, the height of the base support section21is a variable that must be factored. The elongated structure can be made of metallic and/or non-metallic material. The section is made of non-corrosive material that can withstand the elements. The exterior surfaces of the section can be painted, anodized, and/or galvanized. At least one IOT device24can be housed inside and/or on the exterior face of the section. The base support section21can be fabricated by methods of extrusion, forming or molding. The base plate section21can define a hand hole at its bottom to allow access to the interior of the base plate section21. The base support section21is secured to a ground surface by at least one attachment method, such as base plate anchor bolts32or an embedded cantilever.

FIGS.1A-1Dshow elevations and sections of a bollard1embodiment.

FIG.1Ashows a longitudinal elevation of the bollard1. The bollard1includes the base support section21, the heatsink section13, and the driver housing2. The bollard1is anchored to the surface below by a base plate with guiding channels (also, anchoring plate assembly)28coupled above ground to the base support section21. At the bottom of the base support section21, two base support security bolts26are shown, secured to the guiding channel29. The base support section21profile may follow the form of the heatsink section13above. A profile of the driver housing2may correspond in form to a profile of the heatsink section13disposed below the driver housing2. In this embodiment form follows function, wherein the superior light emission utility is derived in part from the preconfigured form of the heatsink section13profile. The heatsink section13exterior surfaces are shown covered by light source modules17. The light source modules17include at least one substrate41board populated by light sources42having a lens18covering over the substrate41. The lens18can employ at least one light source42dedicated nano-optical lens19. In this embodiment the light source42is an LED lamp.

The driver housing2is shown above the heatsink section13with its driver housing cover3on top. The driver housing cover3is fabricated with a plurality of heat dissipating fins15shown on its exterior surface. Above and below the heatsink section13an air gap43enables hot air rising from the heatsink's13interior to evacuate. The air gap43is formed by concealed internal through bolts6coupled to spacer rings4. In some examples, a screen may cover the air gaps43, preventing insects and debris from entering an interior of the bollard1.

FIG.1Bshows a longitudinal elevation of the bollard1. Elements shown are the same as shown inFIG.1A.

FIG.1Cshows a longitudinal section view of the bollard1. The base plate with guiding channels28, two base support securing bolts26coupled to the guiding channel29at both sides of the base support section21, a junction box30coupled to the base plate28having the guiding channels29. The junction box30is coupled to the base plate28having the guiding channel29, using mechanical fasteners to engage the junction box through bores31. The junction box30is shown having a junction box cover with receptacle33.

At the top of the bollard's1embodiment, a light source driver25is shown in dashed line, coupled to the interior face of the driver housing cover3, with the cover3having a plurality of fins15on its exterior face (See, e.g.,FIGS.5E and5F). On both sides of the light source driver25, top cover bolts7are shown engaging threaded bores9at the bottom interior of the driver housing2. Also shown at the bottom of the driver housing2are through bolt bores10with through bolts6extending through the heatsink through bolt bore16engaging the base support threaded bore22below. At the bottom of the driver housing2, a driver housing power or power and data receptacle11is shown coupled to the junction box cover with receptacle33by power or power and data conductor cable12. In an example, power or power and data conductors may originate in the driver housing2and/or the base support section21powering light sources42and IOT/s24.

FIG.1Dshows a transverse section of the bollard1. Elements shown are the same as shown inFIG.1C.

FIGS.2A and2Bshow elevation and plan diagrams of the bollard's1light emittance concept.

FIG.2Ashows diagrammatically an elevation of the light-emitting bollard1depicting a portion of the field of illumination36covered by the bollard's1light source42. In this embodiment, the field of illumination36is a walkway45adjacent to the bollard1. In another embodiment, the bollard1can be located inside a field of illumination36. The field of illumination36may include sub-fields, short field, mid-field and far field. The short field is located near the bollard1. The proximity of the field to the light source42necessitates a lesser quantity of lamps and/or power input to illuminate the sub-field37. Therefore, the area retaining the light source module17can be smaller. In addition, this sub-field37can be longer than its neighboring mid-field while its farthest field can be the shortest. Since most bollards'1height is well below human40eye level, this illumination concept can eliminate or drastically reduce direct glare, e.g., as illustrated by glare angle38, and fully meet dark sky light cut-off regulations, e.g., as illustrated by dark sky cut-off angle39. This diagram approximates the scaled relation of the light-emitting bollard1, a human40, an illuminated field of illumination36, and perceived glare and dark sky angles from the light source42.

FIG.2Bshows diagrammatically a plan of the light-emitting bollard1shown in the above elevation. The bollard1is shown adjacent to a walkway45illuminating three sub-fields of illumination37, a short field, a mid-field, and a far field. The bollard's1light source modules17are preconfigured to form an overlapping sub-field of illumination pattern that is jointed to form a contiguous uniform single field of illumination36.

FIGS.3A and3Bshow a perspective of a section of a walkway illuminated by the novel bollard and a table expanding on the bollard's field of illumination light emittance concept.

FIG.3Ashows a partial section of a walkway45with an adjacent bollard1illuminating approximately half of the bollard's1field of illumination36. The bollard's1distance from the walkway45is identified by the designation D1, the distance from the bollard to the remote edge is identified as D2, the length of the field of illumination36is identified as L (the figure shows only one-half of the field), the height of the light source module17above finished grade (afg) at its bottom is H1, and the height of the light source module17aft at its top is H2.

The bollard1height can vary, typically ranging between 16 and 40 inches afg. The bollard1can be placed alongside a walkway45or within an area of circulation. WhileFIG.3Afocuses on a bollard1embodiment, the novel optical light control solution can be applied to any light source retaining vertical structure illuminating at least one field of illumination36.

FIG.3Ashows an array of lamp center beams49emanating from the bollard's1light source modules17directed toward specific sub-areas48within each sub-field of illumination37. The lamp center beam49is centered about an oval-shaped area shown in dashed line representing the sub-area48coverage of each lamp44. The sub-fields37shown include the far field, the mid-field, and one-half of the short field. This embodiment employs the same lamp44with a dedicated lamp nano-optical lens19directing each lamp center beam49.FIG.3Ashows the far field lamp beam covering a smaller sub-area48than the mid-field and the short field lamp coverage area. As the distance from the light source increases, the area coverage by the light source diminishes. The lamps' area coverage overlaps to produce uniform illumination within the sub-field of illumination37. Coupled together, the sub-fields of illumination37become a single unified and uniformly illuminated field36. In another embodiment, the light source module17can employ at least one different lamp size, lamp form, lamp power input, lamp color temperature, lamp chromaticity, lamp color rendering index (CRI) and/or a combination thereof.

The elongated and/or wide field/s, low energy consuming and uniformly illuminating bollard is pre-configured by at least one of the following variables:

The height H1of the light source module17bottom from the bollard's1base support section21mounting surface the bollard1is mounted to.

The height H2of the light source module17top from the bollard's1base support section21mounting surface the bollard1is mounted to.

The horizontal transverse distance D1between the light source module17base support section21and the nearest walkway45edge.

The horizontal transverse distance D2between the light source module17base support section21and the walkway45far edge.

The length L of the field of illumination36.

The distance between each sub-field of illumination37sub-area of illumination48and its corresponding light source module17.

The orientation and tilt angle between each sub-field of illumination37sub-area of illumination48and its corresponding lamp/s44.

The number and size of lamps44required to populate every light module17.

The power input needed for each lamp44in the light source module17.

The best optical lens needed to generate the most efficient light beam in the desired direction.

The orientation of the heatsink light source retaining flat surface14in relation to the field and sub-field of illumination37,36target.

The light reflectance properties of the field of illumination36.

The light source module17size and number of lamps44and the lamps' power input is contingent on the pre-configured area the module17is tasked with illuminating.FIG.3Ashows a size of the module17disposed parallel to the walkway45as being smaller than a size of the module17disposed perpendicular to the walkway45. The smaller light source module17is tasked with illuminating the walkway45area in the short field. Since the distance to any sub-area48within the short field is relatively close, the light source module17can be smaller.

This innovation aims to extract optimal efficiency from the light source module's17plurality of lamps44with their respective dedicated optical lenses19. For this reason, the light source module17retaining heatsink13profile is configured to orient or orient and tilt its heatsink light source retaining surfaces14in a manner that minimizes light loss due to light rays' redirection and absorption. The form of the heatsink13profile is configured for optimal light source emittance efficiency.

FIG.3Bshows an example of the table reflecting the distance and aiming angles of each lamp's dedicated nano-optical lens19illuminating a sub-area48within a sub-field of illumination37. The table can be generated by a computer program. The computer program evaluates the input parameters entered and establishes at least one of: the size of the light source module17, the location of the light source module the number of lamps44, the size of the lamp, power input of the lamps, the spacing between the lamps, and the lamp's dedicated optic18including the nano-optical lens center beam target, the nano-optical lens orientation and tilt angles, and the nano-optical lens beam pattern. The program output can include fabrication plans for the light source module17lamp retaining substrate41populated with lamps44and/or the light source module's17dedicated lamp nano-optical lens19.

FIGS.4A and4Bshow in perspective and elevation views the bollard's1light source modules17coupled to the heatsink13.

FIG.4Ashows in perspective view an eight-sided heatsink13having two tiers of light source modules17coupled to each of the exterior heatsink light source retaining flat surfaces14. Over the light sources42is a lens18cover with at least one lamp44dedicated nano-optical lens19. The lamp44dedicated nano-optical lens19is configured to direct the lamp's44central beam toward a specific target within a sub-field of illumination37. Also shown are a plurality of mechanical fasteners, such as light source module screws51coupling the light source modules17to the heatsink light source retaining flat surface14. There are a number of methods to couple the light source module17to the retaining flat surface of the heatsink13. Using a coupling screw is an example of one method. The orientation and tilt angles of the heatsink's13light source42retaining heatsink light source retaining flat surfaces14are preconfigured to enable the light source to emit the light efficiently. In this embodiment the bollard's1heatsink light source retaining flat surfaces14are vertical and the orientation of three heatsink light source retaining flat surfaces14is preconfigured in relation to the field of illumination36walkway45it is positioned adjacent to. The top of the heatsink13shows a plurality of heat dissipating fins15, heatsink through bolt bores16, and a central channel opening20. In this embodiment the power or the power data conductor cable11passes through the central channel opening20. In another embodiment, several channels with or without heat dissipating fins15can induce air to rise from the bottom of the heatsink13to the top. This embodiment does now show power conductors' connectivity to the light source modules17.

FIG.4Bshows an enlarged partial longitudinal elevation of the top section of the bollard1. The heatsink section13is wedged between the driver housing2above and a portion of the base support section21below. An air gap43enables air entering from below the heatsink13to rise through the heatsink's13interior and exit through the top gap. Light source modules17are shown coupled to the heatsink13embodiment by means of mechanical fastener, such as light source module screw51and each of the modules is covered by at least one lens18.

FIGS.5A-5Fshow sections and elevations of the bollard's1heatsink13.

FIG.5Ashows a longitudinal section through the heatsink13. At the center, the central channel opening20is shown having top and bottom openings. On both sides of the central channel opening20heatsink through bolt bores16are shown. Through these bores16through bolts6couple the heatsink13to the driver housing2and the base support section21.

FIG.5Bshows a transverse section through the heatsink13showing the same central channel opening20and two additional heatsink through bolt bores16.

FIG.5Cshows the exterior longitudinal elevation of the heatsink13having threaded bores52enabling mechanical fasteners51to secure the light source modules17to the heatsink light source retaining flat surface/s14.

FIG.5Dshows the exterior transverse elevation of the heatsink13having threaded bores52enabling mechanical fasteners51to secure the light source modules17to the heatsink light source retaining flat surface/s14.

FIGS.5E and5Fshow the top and bottom elevations of the heatsink13. The heatsink13elevations are the same, having four heatsink through bolt bores16, a central channel opening20, and a plurality of heat dissipating fins15. The segmented eight exterior walls of the heatsink13orientation in this embodiment are configured to provide the light source modules17optimal orientation to attain the highest light delivery efficiency. The heatsink13material is configured to efficiently dissipate the lamp heat generated by conduction. The material can be metallic or non-metallic. The embodiment of the heatsink can be fabricated by methods of extrusion, moulding and/or any other method that can withstand the elements while keeping the light-emitting elements in good operating condition.

FIGS.6A-6Dshow in plan views the bollard's driver housing and the driver housing cover.

FIG.6Ashows a top view of the driver housing2with the driver housing cover3covering the housing's interior. The cover's3top surface shows a plurality of heat dissipating fins15. On both sides of the cover screw heads7are shown securing the cover3to the driver housing2.

FIG.6Bshows a view of an interior portion (or inner portion) of the driver housing cover3of the driver housing2. Elements shown include top cover through bores8through which the top cover bolts7engage the driver housing2, a mounting surface onto which the driver25is coupled to, and a continuous lip50around the perimeter of the driver housing cover3. The exterior walls of the lip50are slightly smaller than the driver housing2inner vertical walls. To provide a moisture resistant enclosure, the driver housing cover3can employ an O-ring around its perimeter lip50and below the heads of the cover bolts7.

FIG.6Cshows a top view of the driver housing2. Through bolt bores10at four locations around the inner perimeter of the driver housing2enable coupling the bollard's1heatsink13and the base support section21to the driver housing2. The threaded bolts6are inserted through the through bolt bores10engaging corresponding threaded bores inside the base support section21. On two sides next to the through bolt bores10are the top cover bolt threaded bore bores9. As described in reference toFIG.1C, the top cover bolt threaded bores9receive a bottom portion of the top cover bolts7. At the bottom center of the driver housing2a coupled receptacle11conveys power or power and data from the bollard's1base support section21to the driver housing2.

FIG.6Dshows the bottom view of the driver housing2. Driver housing through bolt bores10at four locations around a perimeter of the driver housing2retain threaded through bolts6that secure the heatsink13and the base support section21to the driver housing2from inside the driver housing2. At the center, a power or power and data receptacle11is shown coupled to the driver housing2. The receptacle11can receive a detachable power or power and data conductor cable12that on its other end is connected to an optional receptacle33located inside the base support section21. The receptacles11,33are configured to withstand the elements preventing moisture from entering the driver housing2enclosure and the junction box30. The driver housing2can retain electronic devices other than the light source driver25, and power or power and data conductors leading to and/or from the driver housing2can reach any device in or on the bollard's1embodiment. The driver housing2, the driver housing cover3, and any mechanical and/or electrical elements coupled thereto can be made of non-corrosive material resistant to the elements.

FIGS.7A,7B, and7Cshow views front and side partial elevations of the driver housing2, heatsink13and base support21sections, and an exploded perspective view of the light-emitting assembly of the present disclosure, respectively.

FIG.7Ashows a partial longitudinal view of the bollard1embodiment. The driver housing2is disposed at the top and the base support section21is disposed at the bottom. The heatsink section13is shown between the driver housing2and the base support sections21, having spacer rings4separating the sections from one another. The spacer rings4form an air gap43that at the heatsink section's13bottom, induce air to enter the heatsink13, and at the top, vent the heated air to the outside. In an example, the air gap43may employ a protective screen to prevent insects and debris from entering the interior of the bollard1. The elements shown for the driver housing2include the driver housing top cover3and integral fins15on top, dissipating heat generated by the light source driver25and any other electronic device housed inside the driver housing2. The elements shown on the heatsink section13include: light source modules17coupled to the heatsink light source retaining flat surfaces14, having lenses18covering a plurality of lamps44. The lens18can have at least one lamp dedicated nano-optical lens19, wherein the nano-optical lens19covering a lamp44at any light source module17can have at least one different light beam center from another nano-optical lens19with a dedicated lamp44. The light source module17in this embodiment is coupled to the heatsink13by light source module screws51(See, e.g.,FIG.4B). When tightened against the heatsink light source retaining flat surfaces14, the light source module screws51form a uniform bond between the light source module substrate41and the heatsink13. In another embodiment, other means of coupling the light source module17to the heatsink13can be used. The elements shown on the base support section21include an IOT device24and the base support section walls23.

FIG.7Bshows a partial transverse view of the bollard1embodiment. The elements shown are the same as shown inFIG.7A.

FIG.7Cshows an exploded axonometric of the bollard1of the present disclosure. From the top down, elements shown include: the top cover bolts7, the top cover through bores8, the driver housing cover3coupled to a driver25, the driver housing2, through bolts6extending down from the driver housing2, a driver housing power or power and data receptacle11shown at the bottom center of the driver housing2connected to a power or power and data conductor12extending through the heatsink section's13central channel opening20, light source modules17covering at least one of the light source retaining flat surfaces14of the heatsink13, and a plurality of heat dissipating fins15at the bottom of the heatsink13. Elements shown with the base support section21include: the base support threaded bores (also, base plate channel threaded bores)27at the bottom, base support securing bolts26insertable through the base support threaded bores27to secure the base plate28to the base support section21, base plate having guiding channels28, guiding channels29, and base plate anchor bolts32. As described in reference toFIGS.7A and7B, the spacer rings4and screens5are disposed between the heatsink13and the driver housing2and/or between the heatsink13and the base support section21. In another embodiment, there can be an air gap43on the top of the heatsink13only, or no air gap43at all. In an example, the power or power and data assembly may enter the base plate having guiding channels28from below.

FIGS.8A and8Bshow a top perspective of the bollard's1base plate having guiding channels28coupled to a partial section of the base support section21and a top view of the base support section with guiding channels28, respectively.

FIG.8Ashows a perspective of the bollard's base plate with guiding channels28below a partial section of the base support21. The base support section21is shown in dashed line. The elements shown include: the base plate guiding channels29retaining the base support section21secured by the base support securing bolts26, a power or power and data conductors cable12extended above a junction box cover with a receptacle33, a junction box30coupled to a junction box base plate31, base plate anchor bolts32secured to the base plate with guiding channels28by at least one anchor bolt nut53at the top and/or bottom of the plate28. This base plate with guiding channels28can be formed to suit any profile of the bollard or pole assembly above. As would be understood by one skilled in the art, the power or power and data conduit/s may be coupled to the base plate with guiding channels28from below. Ordinarily, the entire bollard or pole assembly may be shipped from a factory complete with the base plate28and the base plate anchor bolts32set aside. Upon setting the base plate with guiding channels28coupled to the anchor bolts32in concrete, and after the concrete cures and conduit conductors or power and data is connected from below to the junction box30, the entire bollard1or pole assembly can slide onto the base plate28guiding channels29, first, engaging the power or power and data conductors cable12to the junction box cover with receptacle33, followed by securing the base support section21to the guiding channels29with the base support securing bolts26.

FIG.8Bshows a top view of the base plate with guiding channels28. Elements shown include: the base plate28, guiding channels29, junction box30, junction box cover with receptacle33, base plate anchor bolts32and anchor bolt nuts53.

The embodiments and examples set forth herein were presented in order to best explain the present invention and its practical application and to thereby enable those of ordinary skill in the art to make and use the invention. However, those of ordinary skill in the art will recognize that the foregoing description and examples have been presented for the purposes of illustration and example only. The description as set forth is not intended to be exhaustive or to limit the invention to the precise form disclosed. Many modifications and variations are possible in light of the teachings above without departing from the spirit and scope of the forthcoming claims.