Utility hub for post and beam furniture systems

Information

  • Patent Grant
  • 6553730
  • Patent Number
    6,553,730
  • Date Filed
    Friday, March 8, 2002
    22 years ago
  • Date Issued
    Tuesday, April 29, 2003
    21 years ago
Abstract
A utility hub for post and beam furniture systems includes a housing defining an interior space, having a radially disposed notch adapted to laterally receive a vertically extending post therein, and including at least first aperture adapted to allow access to an electrical power receptacle and at least one second aperture adapted to allow access to a communication receptacle. The utility hub also includes a divider member located within the interior space of the housing and substantially dividing the interior space into a first section that includes the first aperture, and a second section that includes the second aperture, and a housing insert located within the notch of the housing, operably connected to the housing, and cooperating with the housing to define a central aperture adapted to receive the post therein.
Description




BACKGROUND OF THE INVENTION




The present invention relates to a utility hub, and in particular to a utility hub for use in post and beam furniture systems and the like.




Portable partition systems for office space and other similar settings are known in the art. Individual partition panels are interconnected in different configurations to form separate offices, workstations, and/or work settings. The particular panels are extremely durable and can be readily disassembled and reassembled into alternative configurations to meet the ever-changing needs of the user. Examples of such partition systems are provided in U.S. Pat. Nos. 3,822,146; 3,831,330; and 4,144,920, which are owned by Steelcase Development Corporation, the assignee of the present invention.




Post and beam furniture systems have also been developed to divide open office plans three-dimensionally into individual workstations and/or work settings. Examples of such furniture systems are provided in U.S. Pat. Nos. 6,003,275; 5,950,371; and 5,899,025, which are also owned by Steelcase Development Corporation, the assignee of the present invention.




Utility hubs are used in a wide variety of applications, such as within table and chair assemblies. These utility hubs typically include electrical receptacles and/or data receptacles located therein, thereby allowing convenient access to the same. Heretofore, these utility hubs have failed to provide adequate insulation between the electrical receptacles and data receptacles, thereby allowing interference in the signals transmitted therethrough. Further, these utility hubs have been incompatible for use within post and beam furniture systems and the like.




As a result, there is a need for a utility hub offering adequate insulation and division between the power receptacles and data receptacles associated therewith, as well as a need for a utility hub compatible for use within and connection to a post and beam furniture system.




SUMMARY OF THE INVENTION




One aspect of the present invention is to provide a utility hub for use in a post and beam furniture system that includes a housing defining an interior space, having a radially disposed notch adapted to laterally receive a vertically extending post therein, and including at least one first aperture adapted to allow access to an electrical power receptacle and at least one second aperture adapted to allow access to a communication receptacle. The utility hub also includes a divider member located within the interior space of the housing and substantially dividing the interior space into a first section that includes the first aperture, and a second section that includes the second aperture. The utility hub further includes a housing insert located within the notch of the housing, operably connected to the housing, and cooperating with the housing to define a central aperture adapted to receive the post therein.




Another aspect of the present invention is to provide a utility hub assembly for use in a post and beam furniture system that includes a housing defining an interior space, having a radially disposed notch adapted to laterally receive a vertically extending post therein, and including at least one first aperture adapted to allow access to an electrical power receptacle and at least one second aperture adapted to allow access to a communication receptacle. The utility hub assembly also includes a divider member located within the interior space of the housing and substantially dividing the interior space into a first section that includes the first aperture, and a second section that includes the second aperture, and a housing insert located within the notch of the housing, operably connected to the housing, and cooperating with the housing to define a central aperture adapted to receive the post therein. The utility hub assembly further includes a utility tube defining a central passage and operably connected with a select one of the housing and the housing insert such that the central passage of the utility tube is in communication with the interior space of the housing.




The present inventive utility hub and associated utility hub assembly provides a utility hub convenient for use and attachment within post and beam furniture systems and the like, can be easily and quickly assembled, is efficient in use, and is particularly well adapted for the assembly to and use within a post and beam furniture system.











These and other advantages of the invention will be further understood and appreciated by those skilled in the art by reference to the following written specification, claims and appended drawings.




BRIEF DESCRIPTION OF THE DRAWINGS





FIG. 1

is a perspective view of a post and beam furniture system including a utility hub embodying the present invention;





FIG. 2

is a perspective view of a vertically extending post of the post and beam furniture system, wherein the post has an X-shaped cross-sectional configuration;





FIG. 3

is a perspective view of a vertically extending post of the post and beam furniture system, wherein the post has a Y-shaped cross-sectional configuration;





FIG. 4

is a perspective view of the utility hub assembled with a utility tube and a vertically extending post;





FIG. 5

is an exploded perspective view of the utility hub;





FIG. 6

is a top plan view of a base of the utility hub;





FIG. 7

is a bottom plan view of the base of the utility hub;





FIG. 8

is a side perspective view of the base of the utility tube;





FIG. 9

is an enlarged perspective view of a first portion of a housing insert;





FIG. 10

is an exploded perspective view of the utility tube, a utility tube retainer, and a plurality of fasteners for connecting the utility tube to the utility post;





FIG. 11

is a bottom plan view of a cover of the utility hub;





FIG. 12

is an exploded perspective view of a second portion of the housing insert;





FIG. 13

is a perspective view of the utility tube including an end cap; and





FIG. 14

is a bottom perspective view of the end cap.











DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS




For purposes of description herein, the terms “upper,” “lower,” “right,” “left,” “rear,” “front,” “vertical,” “horizontal,” and derivatives thereof shall relate to the invention as oriented in

FIGS. 1 and 4

. However, it is to be understood that the invention may assume various alternative orientations and step sequences, except where expressly specified to the contrary. It is also to be understood that the specific devices and processes illustrated in the attached drawings, and described in the following specification are exemplary embodiments of the inventive concepts defined in the appended claims. Hence, specific dimensions and other physical characteristics relating to the embodiments disclosed herein are not to be considered as limiting, unless the claims expressly state otherwise.




The reference numeral


10


(

FIG. 1

) generally designates a post and beam furniture system embodying the present invention. The prefabricated furniture system


10


is of the type that is designed for use in open building plans and the like, and includes a freestanding portable partition system


12


that includes a plurality of horizontally-extending overhead beams


14


interconnected to define an overhead framework, a plurality of vertically-extending posts or support columns


16


, and a plurality of horizontally-extending mid-height beams


18


. Posts


16


each includes a lower end


20


abuttingly supported on a building floor surface


22


, and an upper end


24


connected with the overhead framework as formed by overhead beams


14


.




The posts


16


(

FIGS. 2 and 3

) associated with the illustrated post and beam furniture system


10


are provided in T, X, L and Y configurations, wherein each projecting leg or flange


26


of each post


16


includes a T-shaped channel


28


. For example, as illustrated in

FIG. 2

, a post


16


having an X-shaped configuration incorporates four projecting legs or flanges


26


which are disposed in a mutually-perpendicular relationship to define a cruciform shape. Each end face


30


of each of the flanges


26


incorporates a T-shaped channel


28


along the entire length thereof. A post


16


having a Y-shaped configuration, as illustrated in

FIG. 3

, incorporates three projecting legs or flanges


26


which are disposed in a triangularly-shaped relationship. Similar to the X-shaped posts


16


of

FIG. 2

, each face


30


of each of the flanges


26


of Y-shaped post


16


incorporates a T-shaped channel


28


along the entire length thereof. As best illustrated in

FIGS. 2 and 3

, each of the T-shaped channels


28


of posts


16


includes a narrowed neck portion


32


providing access to an enlarged interior portion


34


partially defined by an interior rear wall


36


, an interior side wall


38


and an interior channel wall


40


. Each interior channel wall


40


includes a longitudinally-extending, distally located groove


42


. Each channel


28


has a T-shaped lateral cross-sectional configuration which is adapted to detachable receive and capture mating fasteners therein, as discussed below.




The reference numeral


44


(

FIG. 4

) generally designates a utility hub assembly embodying the present invention. In the illustrated example, the utility hub assembly


44


includes a housing


46


defining an interior space


48


, having a U-shaped radially disposed notch


50


adapted to laterally receive the vertically extending post


16


therein, and including a plurality of electrical power receptacle receiving apertures


52


that allow access to a plurality of electrical power receptacles


54


located within interior space


48


, and a plurality of communication/data receptacle receiving apertures


56


allowing access to a plurality of communication/data receptacles


58


located within interior space


48


. The utility hub assembly


44


also includes a divider member


60


(

FIG. 5

) located within interior space


48


of housing


46


and dividing interior space


48


into a first section


64


that includes apertures


52


, and a second section


65


that includes apertures


56


. The utility hub assembly


44


also includes a housing insert


66


located within notch


50


of housing


46


, operably connected to housing


46


, and cooperating with housing


46


to define a central aperture


68


that receives post


16


therein. Utility hub assembly


44


further includes a utility tube


70


defining a central passage


72


and operably connected with housing


46


such that passage


72


of utility tube


70


is in communication with interior space


48


of housing


46


as described below.




The housing


46


includes a bowl-shaped base


74


and a bowl-shaped cover


76


that cooperate to provide housing


46


with a saucer-like shape. Base


74


(

FIGS. 6-8

) includes an arcuately-shaped bottom surface


78


, a radially edge


80


, and the U-shaped notch


50


extending inwardly from radial edge


80


. Apertures


52


are spaced about the periphery of edge


80


and are each defined by a rectangularly-shaped sleeve


82


extending radially outwardly from aperture


68


and downwardly from surface


78


. Each sleeve


82


includes a pair of inwardly-extending retainer walls


79


that secure receptacles


54


therein. Base


74


also includes a plurality of upwardly-extending structural integrity walls


84


that structurally reinforce base


74


, a plurality of upwardly-extending studs


86


each including apertures


88


extending therein that receive mounting hardware therein for connecting cover


76


to base


74


, and a plurality of upwardly-extending studs


87


each including aperture


89


extending therein that receive mounting hardware therein for connecting divider member


74


to housing


46


, as described below. Base


74


also includes two pairs of studs


91


extending inwardly from an inner wall


90


of notch


50


, each including an aperture


92


extending therein that receive mechanical fasteners therein for connecting housing insert


66


to housing


46


, as described below. Inner wall


90


of notch


50


includes a plurality of abutment walls


94


defining a semi-circular, octagon-shape. Walls


90


include a plurality of apertures


96


(

FIG. 5

) extending therethrough and adapted to receive mechanical fasteners therein for connecting housing


46


with post


16


as described below.




As best illustrated in

FIGS. 5 and 9

, the cover


76


of housing


46


includes a arcuately-shaped top surface


98


, a radially edge


100


, and the U-shaped notch


50


extending inwardly from edge


100


. Apertures


56


are circumferentially spaced about cover


76


and extend therethrough. Cover


76


includes a plurality of downwardly extending studs


102


each including an aperture


104


extending therein and concentrically located with apertures


88


of base


74


when base


74


and cover


76


are connected. Cover


76


also includes two pairs of downwardly extending studs


106


having mechanical receiving apertures


108


extending therein that receive mechanical fasteners therein for connecting housing insert


66


to housing


46


as described below. A centrally-located U-shaped downwardly extending collar


110


receives walls


94


of base


74


therein as described below. Collar


110


includes an inwardly extending lip


111


. Cover


76


further includes a plurality of downwardly extending studs


112


having apertures


114


extending therein. Each communication/data receptacle


58


is operably connected to cover


76


by a pair of retainer plates


116


each including a pair of distally located apertures


118


extending therethrough and which are co-located with apertures


114


of studs


112


of cover


76


upon assembly. A plurality of mechanical fasteners such as screws


120


extend through apertures


118


of each retainer plate


116


and are threadably received within apertures


114


of studs


112


, thereby retaining a tab


122


centrally located within each retainer plate


116


within a pair of apertures


124


juxtaposed along the length of each receptacle


54


and securing receptacles


54


between retainer plates


116


and cover


76


.




The housing insert


66


includes a lower portion


124


(

FIGS. 5 and 9

) and upper portion


126


. Lower portion


124


of housing insert


66


is defined by an arcuately shaped bottom wall


128


and a pair of perpendicularly-extending side walls


130


each having a partial window


132


extending therethrough. Lower portion


124


of housing insert


66


also includes two pairs of tabs


134


extending outwardly and perpendicular to side walls


130


and each including an aperture


136


extending therethrough. Lower portion


124


is configured such that apertures


136


of tabs


134


are concentrically located with apertures


92


of studs


91


of base


74


after assembly of utility hub assembly


44


as discussed below. Lower portion


124


of housing insert


66


further includes a U-shaped collar


138


extending downwardly from bottom wall


128


and defining an aperture


140


. Upper portion


126


of housing insert


66


includes an arcuate top wall


142


and a pair of side walls


144


extending perpendicular to top wall


142


and each including a partial window


146


therein that cooperates with partial window


132


of lower portion


124


to define a full window. Upper portion


126


also includes two pairs of tabs


148


extending outwardly and perpendicularly from side walls


144


and each including an aperture


150


extending therethrough that receive mechanical fasteners therein for connecting upper portion


126


to housing


46


. Top wall


128


includes an aperture


56


that provides access to a communication/data receptacle


58


mounted to an underside of top wall


142


similar to as described above with respect to cover


76


.




The divider member


60


(

FIG. 5

) is substantially planar and includes a semi-circular outer edge


152


and an inner edge


154


having a shape that is substantially similar to the plan configuration of structural support walls


84


. A plurality of apertures


156


extend through divider


60


and are adapted to receive mechanical fasteners such as screws


158


therein for connecting divider


60


to housing


46


. utility tube


70


(

FIG. 10

) includes an elongated U-shaped first portion


160


and an elongated U-shaped second portion


162


that is snappably engaged with first portion


160


. First portion


160


includes a planar base portion


164


and two pairs of outwardly-extending fingers each including an inner finger


166


and an outer finger


168


. Inner finger


166


includes a longitudinally-extending tooth or barb


170


, while finger


168


includes a longitudinally-extending engagement tooth or barb


172


that cooperates with tooth


170


to retain second portion


162


of utility tube


70


as inner finger


166


and outer finger


168


are each flexibly resilient. Base portion


164


includes a plurality of apertures adapted to receive mechanical fasteners such as Christmas-tree fasteners


178


therein. Alternatively, fasteners


178


may be replaced by screws that are threadably received within aperture


194


of second bracket


190


. Second portion


162


of tube


170


includes a pair of tabs


180


each including an enlarged head


182


and extending longitudinally along terminating edges of the U-shaped second portion


162


. Second portion


162


is provided with a ribbed interior surface


184


, and is preferably constructed of an extruded translucent plastic, although other suitable materials may be utilized.




The utility hub assembly


44


further includes a bracket assembly


186


that includes a first bracket


188


and a second bracket


190


. Brackets


188


and


190


each include a C-shaped end


192


mountable within channel


28


of post


16


, and a centrally located aperture


194


extending therethrough. First bracket


188


includes a downwardly opening hook portion


194


extending inwardly from an upper edge


198


thereof.




The utility hub assembly


44


further includes a retainer


200


(

FIG. 4

) that includes a U-shaped wall


202


having a collar portion


204


that receives an end of utility tube


70


. Retainer


200


also includes a pair of flanges


206


extending outwardly from wall


202


and each including an aperture


208


. The retainer


200


is operably connected to post


16


via a pair of T-nuts


210


as described below.




The utility hub


46


and retainer


200


are each operably connected to post


16


via a plurality of T-nuts


210


(FIGS.


11


and


12


). Each T-nut


210


includes a pair of substantially parallel end walls


212


and a pair of substantially parallel side walls


214


that cooperate to define a substantially parallelogram-shaped body


216


that is adapted to be received within inner portion


34


of channel


28


of post


16


. Each T-nut


210


also includes a first surface


218


having a recessed center portion


220


defined by a pair of inwardly-extending walls


222


extending substantially parallel to end walls


212


, and a second surface


224


juxtaposed from first surface


218


and having a raised center portion


226


defined by a pair of outwardly-extending walls


228


that extend substantially parallel to end walls


212


. Each T-nut


210


further includes a threaded aperture


230


extending between first surface


218


and second surface


224


.




In assembly, receptacles


54


are placed within sleeves


82


of base


74


and attached to associated electrical wiring (not shown). Base


74


is placed about post


16


by sliding base


74


laterally and post


16


though notch


50


thereof. Base


74


is operably connected to post


16


via a plurality of T-nuts


210


located within interior portion


34


of the associated channels


28


and connected to base


74


by a plurality of mechanical fasteners such as bolts


232


that extend through apertures


96


of wall


94


and are threadably received within aperture


230


of each T-nut


210


. Each bolt


232


is tightened until end wall


212


of each T-nut


210


abuts interior side walls


38


of the associated channel


28


, thereby forcing second surface


224


of each T-nut


210


to frictionally engage interior channel wall


40


of the associated channel


28


and raised center portion


226


of each T-nut to enter


32


of the associated channel


28


. Divider member


60


operably connected with base


74


by screws


158


that extend through apertures


156


of divider member


60


and are threadably received within apertures


89


of studs


87


. A plurality of mechanical fasteners similar to screws


158


, as described above, fasten first portion


124


of housing insert


66


to base


74


by extending the screws through apertures


136


of tabs


135


of first portion


124


and threading the screws into apertures


92


of studs


88


. Receptacles


58


are operably connected to cover


76


and second portion


126


of housing insert


66


as describe above and attached to associated data communication lines (not shown). Cover


76


is placed about post


16


by sliding cover


76


laterally and post


16


though notch


50


thereof. Second portion


126


of housing insert


66


is then operably connected to cover


76


by screws


234


that extend through apertures


150


of tabs


148


and are threadably received within apertures


108


of studs


106


. Cover


76


is then connected to base


74


by bolts or screws


236


that extend upwardly through apertures


88


of studs


86


and are threadably received within apertures


104


of studs


102


. Utility tube


70


is operably connected with utility hub assembly


44


by placing and end of utility tube


70


within collar


138


of first portion


124


of housing insert


66


. Utility tube


70


is connected with post


16


via bracket assembly


186


mounting brackets


188


and


190


into channels


28


of post


16


and connecting hook


196


of second bracket


190


to first bracket


188


. Fasteners


178


are then utilized to connect utility tube


70


to each bracket assembly


186


. A second end of utility tube


70


is placed within collar


204


of retainer


200


. Retainer


200


is operably connected to post


16


by a pair of T-nuts


210


located within interior portion


34


of associated channels


28


and that connected to retainer


200


by


238


that extend through apertures


208


and are threadably received within apertures


230


of each T-nut


210


. It should be noted that while in the present example utility tube


70


extends downwardly from housing


46


, utility hub assembly


44


may be reconfigured such that utility tube


70


extends upwardly from housing


46


by connecting first portion


125


of housing insert


66


with cover


76


and second portion


126


of housing insert


66


with base


74


.




The utility hub assembly


44


alternatively includes a cap


240


located within aperture


68


. Cap


240


is utilized within assembly


44


when assembly


44


is connected to a partial height post


16


as best illustrated in FIG.


1


. Cap


240


includes an arcuately-shaped upper surface


242


and a radial wall


244


extending downwardly therefrom. Wall


24


includes an outwardly extending lip


244


. In assembly, cap


240


is located within aperture


68


such that lip


111


of cover


76


engages lip


244


of cap


240


, thereby holding cap


240


within aperture


68


.




In the foregoing description, it will be readily appreciated by those skilled in the art that modifications may be made to the invention without departing from the concepts disclosed herein. Such modifications are to be considered as included in the following claims, unless these claims by their language expressly state otherwise.



Claims
  • 1. A utility hub for use in a post and beam furniture system, comprising:a housing defining an interior space, having a radially disposed notch adapted to laterally receive a vertically extending post therein, and including at least one first aperture adapted to allow access to an electrical power receptacle and at least one second aperture adapted to allow access to a communication receptacle; a divider member located within the interior space of the housing and substantially dividing the interior space into a first section that includes the first aperture, and a second section that includes the second aperture; and a housing insert located within the notch of the housing, operably connected to the housing, and cooperating with the housing to define a central aperture adapted to receive the post therein.
  • 2. The utility hub of claim 1, wherein the housing insert partially defines the interior space of the housing.
  • 3. The utility hub of claim 2, wherein the housing includes a base and a cover operably connected to the base, and wherein the base and the cover cooperate to define the interior space.
  • 4. The utility hub of claim 3, wherein housing and the housing insert cooperate to form a disk-shape.
  • 5. The utility hub of claim 4, wherein the at least one first aperture includes a plurality of first apertures spaced circumferentially about the base of the housing.
  • 6. The utility hub of claim 5, wherein the at least one second aperture includes a plurality of second apertures space circumferentially about the cover of the housing.
  • 7. The utility hub of claim 6, wherein each of the first apertures are defined a plurality of corresponding sleeves that extend downwardly from an outer surface of the housing.
  • 8. The utility hub of claim 7, wherein the central aperture includes a plurality of planar walls that cooperate to form a substantially octagon shape.
  • 9. The utility hub of claim 8, wherein the housing insert includes an aperture adapted to receive wiring therethrough.
  • 10. The utility hub of claim 9, wherein the housing inserting includes an upper portion and a lower portion that operably connects to the upper portion.
  • 11. The utility hub of claim 10, wherein the lower portion of the housing insert includes the aperture adapted to receive wiring therethrough.
  • 12. The utility hub of claim 9, wherein the housing insert includes an outwardly extending collar extending about the aperture and adapted to receive a utility tube therein.
  • 13. The utility hub of claim 1, wherein the housing includes a base and a cover operably connected to the base, and wherein the base and the cover cooperate to define the interior space.
  • 14. The utility hub of claim 1, wherein housing and the housing insert cooperate to form a disk-shape.
  • 15. The utility hub of claim 1, wherein the at least one first aperture includes a plurality of first apertures spaced circumferentially about the housing.
  • 16. The utility hub of claim 15, wherein each of the first apertures are defined a plurality of corresponding sleeves that extend downwardly from an outer surface of the housing.
  • 17. The utility hub of claim 1, wherein the at least one second aperture includes a plurality of second apertures space circumferentially about the housing.
  • 18. The utility hub of claim 1, wherein the central aperture includes a plurality of vertically oriented planar walls that cooperate to form a substantially octagon shape.
  • 19. The utility hub of claim 1, wherein the housing insert includes an aperture adapted to receive wiring therethrough.
  • 20. The utility hub of claim 1, wherein the housing inserting includes an upper portion and a lower portion that operably connects to the upper portion.
  • 21. The utility hub of claim 1, wherein the housing insert includes the aperture adapted to receive wiring therethrough.
  • 22. The utility hub of claim 21, wherein the housing insert includes an outwardly extending collar extending about the aperture and adapted to receive a utility tube therein.
  • 23. A utility hub assembly for use in a post and beam furniture system, comprising:a housing defining an interior space, having a radially disposed notch adapted to laterally receive a vertically extending post therein, and including at least one first aperture adapted to allow access to an electrical power receptacle and at least one second aperture adapted to allow access to a communication receptacle; a divider member located within the interior space of the housing and substantially dividing the interior space into a first section that includes the first aperture, and a second section that includes the second aperture; a housing insert located within the notch of the housing, operably connected to the housing, and cooperating with the housing to define a central aperture adapted to receive the post therein; and a utility tube defining a central passage and operably connected with a select one of the housing and the housing insert such that the central passage of the utility tube is in communication with the interior space of the housing.
  • 24. The utility hub of claim 22, wherein the housing insert partially defines the interior space of the housing.
  • 25. The utility hub of claim 24, wherein the housing insert includes an aperture in communication with the passage of the utility tube.
  • 26. The utility hub of claim 25, wherein the housing insert includes a first collar that receives a first end of the utility tube therein.
  • 27. The utility hub of claim 26, wherein the first collar extends upwardly from the housing insert.
  • 28. The utility hub of claim 27, further including:a retainer operably connected to a second end of the utility tube.
  • 29. The utility hub of claim 28, wherein the retainer includes a second collar the receives a second end of the utility tube.
  • 30. The utility hub of claim 29, further including:a plurality of connectors adapted to connected the utility tube to the post.
  • 31. The utility hub of claim 30, wherein the central aperture includes a plurality of planar walls that cooperate to form a substantially octagon shape.
  • 32. The utility hub of claim 23, wherein the housing insert includes an aperture in communication with the passage of the utility tube.
  • 33. The utility hub of claim 23, wherein the housing insert includes a first collar that receives a first end of the utility tube therein.
  • 34. The utility hub of claim 33, wherein the first collar extends upwardly from the housing insert.
  • 35. The utility hub of claim 23, further including:a retainer operably connected to a second end of the utility tube.
  • 36. The utility hub of claim 35, wherein the retainer includes a second collar the receives a second end of the utility tube.
  • 37. The utility hub of claim 23, further including:a plurality of connectors adapted to connected the utility tube to the post.
  • 38. The utility hub of claim 23, wherein the central aperture includes a plurality of planar walls that cooperate to form a substantially octagon shape.
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