Abstract:
Combined ceiling support device and cable pathway, comprising a plurality of spaced apart junctions ( 3 ) arranged in a predetermined array above an area of a building, means ( 5, 15 ) for supporting said junctions ( 3 ), support means ( 6 ) connected to said junctions for forming a grid over said area, said support means adapted to support a multiplicity of ceiling tiles to form a ceiling for said area, and a multiplicity of cable ducts ( 1   a,    1   b,    2 ) extending between at least some of said junctions ( 3 ) for routing cable over said area.

Description:
[0001]     This application claims the priority of U.S. Provisional Application No. 60/285,192, filed on Apr. 20, 2001, which is hereby incorporated herein by reference in its entirety. 
     
    
     BACKGROUND  
       [0002]     Ceilings within a typical commercial office environment are generally referred to as dropped ceilings and form a barrier between the lower office space and the upper area. Standard sized ceiling tiles, usually 2′×2′ or 2′×4,′ are supported on a matrix of inverted “T” grids that are suspended from wires attached to a building&#39;s superstructure. Cables and wiring (hereafter referred to as cabling) are ordinarily installed above hung ceilings and are used for a variety of purposes, such as electric, voice, and data transmission.  
         [0003]     Cabling installed above a hung ceiling may result in a number of undesirable circumstances. With digital signals, there is a potential for electrical interference from lighting fixtures, motors and other sources. Also, an installed cabling configuration above a dropped ceiling is cumbersome to update and troubleshoot. Due to the difficulty in removing obsolete cabling, updated cabling installations are typically added on to the existing cabling runs resulting in an ever-increasing level of disorganization between the current and obsolete cable installations. This leads to increasing complexity and confusion and a considerable disruption of service whenever updates or repairs are necessary.  
         [0004]     Furthermore, computer server rooms and data processing centers typically require cabling to be routed underneath raised floors. When cabling in other areas is installed above the ceiling, the overall configuration of the cabling system is convoluted. To facilitate the transition from above the ceiling to below the floor, special rooms (closets) are built. Cabling running above the overhead ceiling is routed down a closet wall and then through the bottom of that wall into the space below the adjacent raised floor area. The cabling is then routed up through openings in the floor to and from racks of equipment.  
         [0005]     Many different techniques have been proposed to inconspicuously hide or at least minimize the appearance of cabling which emanates from above the ceiling. In some cases the cabling is merely tacked to the wall or installed within metal or plastic surface conduits routed to the work areas. In more expensive installations, walls are constructed to accommodate the separation of office spaces and the concealment of the cabling.  
         [0006]     Cabling may also be routed down from the ceiling through vertical pipes to offices or cubicles that are isolated in the center of open areas by corridors. In this case, the installation of electric outlets at desired locations requires extensive under-floor installation work, unsightly surface and floor mounted conduits, or cumbersome rubber “thresholds.” In all cases the great expense of the cabling is further increased by the disruption and/or displacement caused by a major installation or upgrade when an area is already occupied.  
       SUMMARY OF THE INVENTION  
       [0007]     The present invention avoids the drawbacks mentioned above by providing a matrix of ducts, which are readily accessible from beneath the ceiling and serve as a support mechanism for conventional ceiling tiles. Cabling of any description can be easily routed and/or rerouted in an orderly fashion to virtually any location within an open office area and away from interference (e.g. fluorescence and motors.)  
         [0008]     In the preferred embodiment, the design of the ceiling results in a physical structure that is stable in all directions and thus capable of supporting building elements, such as wall panels and doorways.  
         [0009]     In addition to the cabling being easily directed from overhead, spare cabling for future expansion can be readily stored within the wall panels so that an initial cabling configuration can endure for an extended period of time. Based upon reasonable estimates of future business needs, additional cabling is already installed when reconfigurations are needed making the rerouting of cabling relatively simple.  
         [0010]     During installation planning all cabling can be catalogued by type or other designation. Because the invention provides a matrix of ductwork, a cable may be assigned to a particular pathway and thus be tracked by a simple coordinate system. Since all cabling is routed overhead, including server rooms and the like, there is no need to transition the cable from the ceiling to a space beneath the floor. As a result, there is less need for closets and cabling from server racks, telephone switching equipment, and electrical sources can all be oriented overhead using the overhead duct system.  
         [0011]     The invention thus provides for an aesthetically pleasing and standardized way to design and build office environments that are durable and secure as well as easy to install, re-design, and reconfigure. 
     
    
     THE DRAWINGS  
       [0012]      FIG. 1A  is a top perspective view showing the invention as it might appear within a representative room area;  
         [0013]      FIG. 1B  is a top perspective view showing how a junction in accordance with a preferred embodiment may be connected to the building superstructure;  
         [0014]      FIG. 1C-1  is a perspective view showing two junctions connected to the building superstructure and a section of the ductwork in accordance with a preferred embodiment of the invention;  
         [0015]      FIG. 1C-2  is an enlarged and exploded view of Detail A in  FIG. 1C-1 ;  
         [0016]      FIG. 1D  is a top perspective view showing a larger section of a preferred embodiment of the invention;  
         [0017]      FIG. 1E  is a perspective view showing the cabling being introduced into the ductwork;  
         [0018]      FIG. 1F  is a perspective view of a preferred embodiment showing how it is used to support wall panels and doors;  
         [0019]      FIG. 2A  is a perspective view showing a section of the duct and junction links in accordance with a preferred embodiment;  
         [0020]      FIG. 2B-1  is an exploded view of the ductwork section shown in  FIG. 2A ;  
         [0021]      FIG. 2B-2  is an enlarged view of Detail A in  FIG. 2B-1 ;  
         [0022]      FIG. 2C-1  is a perspective view showing a duct bottom connected between two junction plates;  
         [0023]      FIG. 2C-2  is an enlarged view of Detail D in  FIG. 2C-1 ;  
         [0024]      FIG. 2C-3  is a top plan view of the junction plates and duct bottom plate;  
         [0025]      FIG. 2C-4  is a sectional view along the line A-A of  FIG. 2C-3 ;  
         [0026]      FIG. 2C-5  is a sectional view along the line E-E of  FIG. 2C-3 ;  
         [0027]      FIG. 2C-6  is an enlarged view of Detail B in  FIG. 2C-4 ;  
         [0028]      FIG. 2C-7  is an enlarged view of Detail C in  FIG. 2C-3 ;  
         [0029]      FIG. 3A  is an exploded view of a junction;  
         [0030]      FIG. 3B  is a perspective view of a junction;  
         [0031]      FIG. 3C-1  is atop plan view of a junction;  
         [0032]      FIG. 3C-2  is a sectional view along the line A-A of  FIG. 3C-1 ;  
         [0033]      FIG. 4-1  is a top perspective view showing a single junction connected to four pairs of junction links;  
         [0034]      FIG. 4-2  is an enlarged perspective view showing Detail A in  FIG. 4-1 ;  
         [0035]      FIG. 4-3  is an enlarged perspective view showing Detail B in  FIG. 4-1 ;  
         [0036]      FIG. 5A-1  is side elevational view of one of the two rails used in the preferred embodiment;  
         [0037]      FIG. 5A-2  is a side elevational view of the other rail;  
         [0038]      FIG. 5A-3  is a cross sectional view along the line A-A of  FIG. 5A-2 ;  
         [0039]      FIG. 5A-4  is side sectional view along the line B-B of  FIG. 5A-2 ;  
         [0040]      FIG. 5A-5  is an enlarged view of Detail C in  FIG. 5A-2 ;  
         [0041]      FIG. 5A-6  is a perspective view of one of the rails;  
         [0042]      FIG. 5A-7  is a perspective view of the other rail;  
         [0043]      FIG. 5B  is an exploded perspective view showing how the two rails are connected to a junction;  
         [0044]      FIG. 6  is a perspective view partially exploded view showing how one of the two pairs of rails is connected to a junction;  
         [0045]      FIG. 7-1  is a side elevational view showing a rail, junction link and duct side panel in accordance with a preferred embodiment;  
         [0046]      FIG. 7-2  is a sectional view along the line A-a of  FIG. 7-1 ;  
         [0047]      FIG. 7-3  is an enlarged of Detail B in  FIG. 7-2 ;  
         [0048]      FIG. 7-4  is a perspective of the structure illustrated in  FIG. 7-1 ;  
         [0049]      FIG. 8A-1  is side elevational view showing a cable management device connected to a rail and junction link;  
         [0050]      FIG. 8A-2  is a sectional along the line A-A of  FIG. 8A-1 ;  
         [0051]      FIG. 8A-3  is an enlarged view of Detail B in  FIG. 8A-2 ;  
         [0052]      FIG. 8A-4  is an enlarged view of Detail C in  FIG. 8A-2 ;  
         [0053]      FIG. 8A-5  is an enlarged view of Detail D in  FIG. 8A-1 ;  
         [0054]      FIG. 8B  is a perspective showing how a cable management device arranges the cabling;  
         [0055]      FIG. 8C  is a perspective view showing the relationship of the cable management device and the pairs of rail and junction links between adjacent junctions;  
         [0056]      FIG. 9A  is a perspective view showing how an end ceiling tile is supported with respect to a building wall;  
         [0057]      FIG. 9B-1  is a front elevational view showing the support mechanism for the end tile;  
         [0058]      FIG. 9B-2  is a sectional view along the line A-A of  FIG. 9B-1 ;  
         [0059]      FIG. 9B-3  is an enlarged view of Detail B in  FIG. 9B-2 ;  
         [0060]      FIG. 10A  is a perspective view of a rail termination bracket in accordance with a preferred embodiment;  
         [0061]      FIG. 10B-1  is a side elevational view showing a rail connected to a rail termination bracket;  
         [0062]      FIG. 10B-2  is a sectional view along the line A-A of  FIG. 10B-1 ;  
         [0063]      FIG. 10C  is a perspective showing a single rail supported at an end with respect to an existing wall;  
         [0064]      FIG. 11-1  is a perspective view showing how a junction is supported when existing ductwork interferes with its connection to the building superstructure;  
         [0065]      FIG. 11-2  is an enlarged view of Detail A of  FIG. 11-1 ;  
         [0066]      FIGS. 12-1  is a top plan view of a post in accordance with a preferred embodiment;  
         [0067]      FIG. 12-2  is an exploded view showing how a post is connected to a junction at its upper end and the floor at its lower end;  
         [0068]      FIG. 12-3  is an enlarged view of Detail A of  FIG. 12-2 ;  
         [0069]      FIG. 12-4  is a top plan view of the plate that goes at the top of the post;  
         [0070]      FIG. 12-5  is an enlarged view of Detail B of  FIG. 12-2 ;  
         [0071]      FIG. 12-6  is a plan view of a turntable used to connect the bottom of the post to the floor;  
         [0072]      FIG. 12-7  is an enlarged view of Detail C of  FIG. 12-6 ;  
         [0073]      FIG. 13A-1  is a perspective view showing a wall panel frame between two posts;  
         [0074]      FIG. 13A-2  is an enlarged view of Detail A of  FIG. 13A-1 ;  
         [0075]      FIG. 13B-1  is a perspective view of a wall panel frame having cabling reels connected thereto;  
         [0076]      FIG. 13B-2  is a perspective view showing one of the cabling reels;  
         [0077]      FIG. 13B-3  is an enlarged view of Detail B of  FIG. 13B-1 ;  
         [0078]      FIG. 14-1  is a top cross sectional view showing a preferred device for coupling the two wall panel frames to a post;  
         [0079]      FIG. 14-2  is a perspective of a locking device for securing a door panel frame to a post;  
         [0080]      FIG. 14-3  is an exploded view of the locking device shown in  FIG. 14-2 ;  
         [0081]      FIG. 15-1  is an exploded view of a wall panel surface in accordance with the preferred embodiment;  
         [0082]      FIG. 15-2  is an enlarged view of Detail A of  FIG. 15-1 ;  
         [0083]      FIG. 15-4  is a rear elevational view of a wall panel surface;  
         [0084]      FIG. 15-5  is an enlarged view of Detail B of  FIG. 15-4 ;  
         [0085]      FIG. 15-6  is a front elevational view of the floor molding of the wall panel surface;  
         [0086]      FIGS. 15-7  is a front elevational view of another version of the floor molding;  
         [0087]      FIG. 16A-1  is an exploded view of a wall panel in accordance with a preferred embodiment;  
         [0088]      FIG. 16A-2  is an enlargement view of Detail A of  FIG. 16A-1 ;  
         [0089]      FIG. 16A-3  is an enlarged view of Detail B of  FIG. 16A-1 ;  
         [0090]      FIG. 16A-4  is a perspective view of an assembled wall panel and posts;  
         [0091]      FIG. 16B-1  is a top plan view of a wall panel assembly;  
         [0092]      FIG. 16B-2  is a sectional view along the line of A-A of  FIG. 16B-1 ;  
         [0093]      FIGS. 16B-3  is an enlarged view of Detail B of  FIG. 16B-2 ;  
         [0094]      FIG. 17A  is a perspective view of a door frame and door;  
         [0095]      FIG. 17B  is an exploded view of the door frame and door shown in  FIG. 17A ;  
         [0096]      FIG. 17C-1  is a top plan view of the door frame saddle;  
         [0097]      FIG. 17C-2  is an enlarged view of Detail A of  FIG. 17C-1 ;  
         [0098]      FIG. 17D-1  is a perspective view of a panel latch in accordance with a preferred embodiment;  
         [0099]      FIG. 17-2  is a perspective view of a doorframe latch in accordance with a preferred embodiment;  
         [0100]      FIG. 17E-1  is a perspective view of a door stop;  
         [0101]      FIG. 17E-2  is a perspective view of a saddle end;  
         [0102]      FIG. 17E-3  is a plan view of the backside of the stop;  
         [0103]      FIG. 17F  is an exploded view showing the relationship of the upper door panel assembly, post and junction rails;  
         [0104]      FIG. 17G-1  is a perspective view showing the upper doorframe;  
         [0105]      FIG. 17G-2  is an enlarged view of Detail A of  FIG. 17G-1 ;  
         [0106]      FIG. 18  is a perspective view of a partial hung ceiling attached to rail;  
         [0107]      FIG. 19A  is a perspective view showing how the ends of the rails, ducts and junction links are supported with respect to a building wall;  
         [0108]      FIG. 19B  is an exploded view of the construction showing  FIG. 19A ;  
         [0109]      FIG. 20A - 1 - a  is a perspective view showing the interconnection between an end panel frame and a building wall;  
         [0110]      FIG. 20A-2  is a rear plan view of how the end panel is supported relative to the building wall;  
         [0111]      FIG. 20B  is an exploded perspective view showing the end panel frame assembly;  
         [0112]      FIG. 21A  is a perspective view showing a wired server rack; and  
         [0113]      FIG. 21B  is a perspective view showing a wired vertical post connected to a portion of the ductwork. 
     
    
     DETAILED DESCRIPTION  
       [0114]     The invention may be thought of as comprising three basic components. First is the structural support, which is a situated primarily above the traditionally hung ceiling level and provides a stable support for the ductwork, the ceiling and the wall system.  
         [0115]     Second is the duct matrix which is the actual structure which supports the overhead cabling runs within the building area and, in the preferred embodiment, is positioned just below the traditional hung ceiling level.  
         [0116]     The third element is a wall panel system comprising an arrangement of panels and doorways extending downwardly from the duct matrix to the floor.  
         [heading-0117]     General Layout  
         [0118]      FIG. 1A  illustrates a top perspective view of a building area showing a matrix of cabling ducts  1 , cabling  9 , ceiling tiles  14 , and a plurality of posts  18  and wall panels  23  in accordance with a preferred embodiment of the invention.  
         [0119]     The invention contemplates an array of ductwork that may service the entire ceiling of the area, or only a section of the ceiling, with the rest consisting of a conventional hung ceiling. Posts  18  and panels  23  permit an office area to be dynamically divided into individual offices or cubicles, eliminating the problems associated with the combination of under and above floor cabling, as will become more apparent from the following detailed descriptions.  
         [0120]      FIG. 1B  shows the elements involved in the vertical support of the invention according to a preferred embodiment. A support rod  5  is attached to an I Beam  16 , which represents one possible support element of a building&#39;s infrastructure. In use, the upper spring latch  15  is securely fastened to I Beam  16 , or other building support member. The pre-measured support rod  5  is inserted and secured into the upper spring latch  15  and then extended downwards through the lower spring latch  3   g  and into the upper junction bracket hole  3   f  by about three inches (for example). Junction  3  is adjusted up and down until the ceiling tiles  14  are vertically level to other already positioned junctions  3  by releasing and applying the tension of the lower spring latch  3   g . Rails  6  and  7 , as well as the junctions  3  and links  2  constitute the skeletal framework of the ceiling matrix to be discussed in detail in the following sections.  
         [0121]      FIGS. 1C-1  and IC- 2  provide a more detailed representation of the ceiling assembly illustrating the I Beam  16  supporting a “T” shaped section of the ceiling duct matrix. Support rods  5  are attached with spring latches  15  to the I Beam  16  and then to the actual ductwork by spring latches  3   h  on the junctions  3 . The junctions  3  are attached to the rails  6  and  7  and to the links  2  forming the framework for the duct sides  1   a . The detail view A, showing the hidden lines of the drawing, illustrates the junction lower plate  3   b  and its attachment to the links  2  and to the junction tube  3   a.    
         [0122]      FIG. 1D  is an above ceiling-level perspective view illustrating the combined structural elements of the invention. An I Beam  16  represents a portion of the superstructure of a typical office building. A small section of standard drywall  11  is positioned on one side, at what would be the perimeter of an office area. Three ceiling tiles  14  are depicted to provide a sense of height. The invention creates rigid horizontal stability by means of a matrix of perpendicular rails  6  and  7  that are pop riveted together and then suitably fastened to wall support brackets  10 , which is attached to the wall  111  around the entire perimeter of a room. A junction  3  is pop riveted to the rails  6  at every intersection of rails  6  and  7 . The bottom of junctions  3  are riveted to junction links  2 , forming a lower structural matrix, similar to and essentially below the matrix formed by rails  6  and  7 . In practice, the rail and junction link matrices extend to all perimeter walls of the installed area. Vertical stability (both up and down) is provided by support rods  5 , which are attached at their upper end to the building&#39;s infrastructure, in this case I Beam  16 , and at their lower ends to junctions  3 .  
         [0123]     The duct matrix ( FIG. 1E ) is formed by duct sides  1   a  which are attached to the rails  6  and  7  at the top and to the junction links  2  at the bottom. Overhead cabling runs  9  within the office area enter the ducts assemblies from above and are guided to their destination within the duct matrix.  
         [0124]      FIG. 1F  is a perspective view of the invention&#39;s use to provide structural support for the attachment of wall panels  23 , a door assembly  24 , a wall panel frame  20  with cabling reels  20   a , and a cut-to-size wall panel  23   a  that fits the wall system to the perimeter dry wall  11 . Posts  18 , attached to the bottom of junctions  3  and junction links  2  create a stable frame to firmly integrate wall panels and doors.  
         [0125]     In the preferred embodiment, it is contemplated that a number of the panel frames  20  will be cabled. Cabling reels  20   a , which easily attach to panel frames  20 , are used to archive cabling for future use or as a terminal point where telephone and data processing equipment can be connected. The invention allows for the integration of cabling  9  directly to any and all wall panels within the business environment. Cabling  9 , emanating from different locations, is routed through the duct matrix to planned work areas. Stores of cabling, in cabling reels  20   a , are located within the wall system ready for later planned expansion.  
         [heading-0126]     Duct and Junction Links  
         [0127]     FIGS.  2 A and  2 B- 1  show perspective and exploded views of a U-shaped duct assembly  1  that is made up of three removable sections; namely, two duct vertical panels  1   a  and one duct horizontal panel  1   b . The duct vertical panel  1   a  is positioned and supported on its bottom surface by three tabs  2   a  located on the top surface  2   b  of junction link  2  that align with and insert into three slots  1   c  (detail A) on horizontal panels  1   a.    
         [0128]     The duct horizontal panel  1   b  is only used in the absence of a wall panel  23  ( FIGS. 16A and 16B ) being installed underneath. The duct horizontal  1   b  panel is supported on both ends by the bottom junction plate  3   b . Cross section AA, shown in  FIG. 2C-4 , Details B and C, illustrate the manner in which the duct panel  1   b  essentially sets on top of junction lower plate  3   b . When integrated with the junction links  2  ( FIG. 2A ) the panel  1   b  is held securely in place. Cross section EE provides an end view of the duct horizontal  1   b  panel in relation to the junction lower plate  3   b . Given the design of the duct assembly  1 , all duct panels can be easily removed to provide access to the interior of the duct itself.  
         [heading-0129]     Junctions  
         [0130]      FIG. 3A  is an exploded view of the preferred embodiment of a junction  3 , which is a structural element within the invention&#39;s ceiling superstructure. When posts  18  ( FIG. 12 ) and wall panels  23  ( FIG. 16A-4 ) are employed the junction provides stability to the entire wall panel system. The junction in combination with junction links  2  ( FIG. 4 - 1 ,) forms a horizontal structural matrix that provides support to the overall ceiling and wall panels  23  ( FIG. 16B .)  
         [0131]     The construction of each junction  3  includes a metal center tube  3   a  that is welded perpendicular to both a bottom junction plate  3   b  and at the top to an inverted U-shaped upper junction bracket  3   c . The bottom junction plate  3   b  and the lower half of tube  3   a  include a threaded center hole  3   e , which extends upwards through the lower half of the tube  FIG. 3B ) into which a plastic filler cap (not shown) or a jackscrew  10  ( FIG. 12 ) may be installed. The upper junction bracket  3   c  has a center hole  3   f , which aligns with the center hole in tube  3   a , and that hole  3   g  ( FIG. 3B ) extends downwards through the upper half of tube  3   a . Extending upwards from the top of the upper junction bracket  3   c  is a spring latch  3   h  that is riveted at  4  through spring latch hole  3   j  into upper junction bracket hole  3   h . The spring latch is used to secure the junction vertically to the building superstructure via vertical support rod  5  ( FIGS. 1B and 1C .) Holes  3   n  in bottom junction plate  3   b  are used to fasten links  2  to junction  3  ( FIG. 4-3 ).  
         [0132]     In  FIG. 3C-2  the junction  3  is sectioned along line AA to illustrate the inner physical makeup of the junction tube  3   a  relative to the other junction parts.  
         [0133]     In  FIG. 4-1  the junction  3  and junction links  2  are shown assembled. A hole  2   c  in each end of the junction link  2  is aligned with the appropriate hole  3   n  injunction  3  ( FIG. 4-3 ) and then secured with pop rivets. Each junction is connected to eight junction links, two parallel junction links radiating outwards from each of the junction&#39;s four sides.  
         [heading-0134]     Rails  
         [0135]     The rails  6  ( FIG. 5A-2 ) and  7  ( FIG. 5A-1 ) are the primary support elements in the preferred embodiment. From above, the rails are attached to the building&#39;s superstructure and, from below, to junction  3 . The rails also provide support for all ceiling tiles.  FIG. 5A-3  illustrates the profile of the single-walled section  6   g  and  FIG. 5A-4  illustrates the profile of the double-walled section of rail  6 . Protrusion  6   a  supports the ceiling tiles  14  ( FIG. 1D ,) much like the flanges of an ordinary hung ceiling inverted “T.” The slot  6   b  captures and supports the top of duct vertical panel  1   a  when installed, as illustrated in  FIG. 7-3 , and flange  6   c  facilitates the alignment of duct vertical panel  1   a  during installation. The cavity  6   d  within rail  6  allows for the installation of a rail-terminating fixture  12  ( FIG. 10A ) that provides a rigid horizontal attachment of the end of each rail section to an existing surrounding wall. Folds  6   e  create rigidity across the two single-walled sections  6   g  and protrusion  6   f  stops ceiling tiles from popping up from a change in room air pressure when a door is slammed or moved abruptly.  
         [0136]      FIG. 5B  is a perspective view of a rail  6  and a rail  7  illustrating their relationship to one another. Throughout this paper rail  6  is generally shown as a single-length section although in practice it would be manufactured in greater lengths. Protrusion  6   a  supports the ceiling tiles  14 , as mentioned earlier. Rails  6  and  7  are connected together when holes  7   a , in flanges  7   b  at the ends of perpendicular rails  7 , are positioned and secured with pop rivets within holes  6   h  in rail section  6 .  
         [0137]      FIG. 6  shows a junction  3  and rail  6 . Junction  3  pop riveted to the ends of two adjacent rail  6  sections essentially forms a contiguous rail segment. To attach junction  3  to rail  6 , the insides of holes  3   m  in upper junction bracket  3   c  are aligned with the outside holes  6   j  of the single-walled section  6   g  of the rail  6  and pop rivets are installed. This attachment positions two rails  6  parallel at the appropriate distance apart to align the top of duct panel  1   a  with slot  6   b  ( FIG. 7 - 3 ,) when later installed.  
         [0138]     As the ceiling grid is installed, junctions  3  and rails  6  and  7  continue to be attached together, as already described, to form the duct support matrix. This process is repeated until all rail sections and junctions are securely fastened together. In practice, during initial installation, the connected sections of rails and adjoining junctions would be temporarily suspended from a building superstructure with conventional hung ceiling wires until the permanent support structure is installed and leveled, as described in  FIGS. 1B and 1C .  
         [0139]      FIG. 7-2  shows the upper edge of duct vertical panel  1   a  inserted into the slot  6   b  in rail  6  that is used to position the panel. A junction link  2  is shown with tabs  2   a  inserted into slot  1   c  ( FIG. 7-2 ) as the means of fastening duct vertical panel  1   a  from the bottom.  
         [heading-0140]     Cable Management  
         [0141]      FIG. 8A-2  is a cross sectional view of the cabling support bracket  8 , used for supporting cabling within each duct section  1 , in combination with two junction links  2  and two rails  6 . As indicated in detail B the upper arms  8   a  of cabling support bracket  8  are positioned over the top and on the outside of upper rail members  6  (or  7 .) In  FIG. 8A-4  the bottom cabling support flanges  8   b  essentially capture the upper outer edges of each junction link  2 . The cabling support bracket  8  is now captured on its bottom flanges  8   b  by the junction links  2  and on top by its arms  8   a  on the outside of the two rails  6  or  7 . To allow room for the duct vertical panels  1   a  to be installed over the cabling support brackets, the tab shoulder  2   d  on the junction link tab  2   a  ( FIG. 8A-5 ) provides for adequate clearance between the duct vertical panel  1   a  and the junction link  2  for the installation of the cable management fixture  8 .  
         [0142]      FIG. 8B  shows cabling  9 , possibly emanating from another floor or an adjacent area, as being routed into and through the appropriate cabling support bracket members  8   c .  FIG. 8C  is a perspective view of the cabling support fixture  8  attached to rails  6  via upper arms  8   a  and onto links  2  by means of bottom flanges  8   b.    
         [heading-0143]     End Tile Angle  
         [0144]      FIG. 9A  is a perspective view of the wall support bracket  10  attached to a section of ordinary dry wall  11  and supporting a ceiling tile  14  by means of the end tile angle  6   m . The wall support bracket  10  is installed level and at the appropriate height around the perimeter of a room. Once installed, the wall support bracket provides the means for horizontally attaching the end tile angle  6   m , which supports cut or whole ceiling tile segments that abut the wall surface.  
         [0145]      FIG. 9B-2  shows the manner in which the end tile angle  6   m  is essentially hooked onto the wall support bracket  10  ( FIG. 9B-3 .)  
         [heading-0146]     Rail Termination  
         [0147]      FIG. 10A  is a perspective view of a rail termination bracket  12 . Rail tabs  12   a  insert into the cut-off rail ends at the wall. Tab spacer  12   b  aligns the tabs  12   a  horizontally with the rails  6  or  7 , at the appropriate width. A vertical support arm  12   c  positions the tabs  12   a  at the right height to engage the rails  6  and  7 . The wall support bracket slot  12   d  engages the wall support bracket  10  to provide definitive end support.  
         [0148]      FIG. 10B-2  shows the insertion of rail termination bracket rail tab  12   a  into cavity  6   d  at the end of rail  6 .  
         [0149]     Upon installation ( FIG. 10C ) to “fit” the rail matrix to the exact room size, a pair of adjacent rail sections  6  or  7  (only one cut-off rail section  6   k  showing) are measured and cut to fill the void from the last whole pair of rail sections, emanating from the center of the room, to the wall support bracket  10 . The rail termination bracket rail tabs  12   a  are then inserted into cavities  6   d  at the cut off end of rail  6   k  ( FIG. 10B-2 ) The rail termination bracket  12  is latched downwards onto the wall support bracket  10  (see  FIG. 9B-3 ) and the uncut ends of rails  6   f  are aligned with the existing contiguous whole rail  6  sections. Once in position, the uncut ends of rails  6   f  are pop riveted to the uncut rails  6  and the junction  3  as described in  FIG. 6 . The cut ends of rails  6   f  are then drilled and pop riveted to the rail termination bracket  12 . The rail termination bracket  12  is screwed into the wall support bracket  10  thus stabilizing the ceiling grid and ductwork matrix in the horizontal plane.  
         [heading-0150]     Junction Support Bar  
         [0151]      FIG. 11-1  shows the solution for when an HVAC duct  13   a  or the like obstructs the space above a junction  3  and a support rod  5  cannot be installed. A horizontal support bar  13  is secured at each end by a bolt fastened into the hole  3   p  within the two adjacent and “rodless”junction spring latches  3   h  thus vertically stabilizing the center junction  3 .  
         [heading-0152]     Post and Jackscrew  
         [0153]     A jackscrew  17  is screwed into the center hole in junction lower plate  3   c  of junction  3 . A bolt-like hexagon protrusion  17   a  at its bottom is used to secure post  18 .  FIG. 12-2  shows a sectioned perspective view of the top and bottom of post  18 . A flat top post plate  18   a  with a hexagon center hole  18   b  is fastened to the top of the post by installing screws  18   c  into screw bosses  18   d  ( FIG. 12-5 ). A lower post plate  18   e , with a central “turntable”  18   f , is fastened in a like fashion to the post bottom. During installation of the post, the hexagon protrusion  17   a  at the bottom of the jackscrew  17  is aligned with and inserted into hexagon hole  18   b  in top post plate  18   a . With the post positioned plumb vertically, post  18  is rotated to unscrew and extend jackscrew  17  until the post is firmly locked down in place on the turntable  18   f  between junction  3  and the floor  19 . The surface protrusions  18   g  on turntable  18   f  are made of rigid rubber so that if the floor surface is carpeting, the protrusions will capture the carpet nap when downwards pressure is applied. In the event that the floor is rigid, for example wood or tile, the protrusions will compress when the post is extended, essentially locking the post bottom in place by friction.  
         [heading-0154]     Panel Frame  
         [0155]      FIG. 13A-1  illustrates the means to position all posts equidistant and square to one another. A panel frame  20  is installed between each adjacent pair of posts  18 , already installed as outlined above. In  FIG. 13-1  one post  18  is shown at a distance from panel frame  20 . In practice, the position of both posts tops would already be positioned by the fixed distance between ceiling matrix junctions, which locate the jackscrew engagement to the post top as illustrated in  FIG. 12 . The panel frame would actually be in close proximity to both adjacent posts when installed. Once positioned between the posts, the panel latches  21  (details in  FIG. 14 ) are engaged and tightened to draw the posts  18  precisely in line to the panel frame  20 , thus squaring the alignment of posts  18  to one another. Prior to final tightening, the panel frame  20  is slid solidly down (stepped upon) to floor level (not shown) to be fixed in place either by (1) the friction of a rubber bottom strip or two-sided tape on a solid surface, (2) a carpet engaging strip for a carpeted surface, or (3) nails or screws through holes in the panel frame bottom into the floor. The panel latches are now fully tightened.  
         [0156]     In  FIG. 13B-1   a  number of cabling reels  20 A are installed into panel frame  20 . The cabling reels are attached to the frame  20  by inserting the rivet-like reel latch  20   f  into the round segment of keyhole slot  20   g  ( FIG. 13B-3 ) and sliding the latch downwards thus securing the latch in the slot portion of  20   g.    
         [0157]     In the preferred embodiment of the invention, each panel frame  20  is latched securely to adjacent posts  18 . The locking mechanism is shown in  FIG. 14-1 . The panel latch  21  comprises a locking cam  21   a  and a knob with a threaded shaft  21   b  that is threaded into the cam  21   a . The assembly is integrated into the panel frame  20  by means of holes drilled into the outer panel frame supports  20   a . Prior to the installation of a panel frame  20  to adjacent posts  18 , the locking cam  21   a  is screwed tight up against the surface between ridges  20   c  on the panel frame outer supports  20   a . This is done to clear the post surfaces when the panel frame is initially inserted between them. Once the panel frame is positioned between the posts, the latch is unscrewed via the latch knob  21   b  allowing the cam  21   a  to be projected between and beyond the edges of the post slot  18   h  formed by post flanges  18   j . Once beyond the post flanges  18   j , the knob  21   b  is rotated in the opposite direction allowing the cam  21   a  to rotate and be positioned behind the post flanges  18   j . As the knob is tightened, the surface of post  18  is drawn securely against the side surface of the panel frame  20 .  
         [heading-0158]     Wall Panels  
         [0159]     Each wall panel includes a frame  20  and two wall panel surfaces  22 . Each surface  22  ( FIGS. 15-1  to  15 - 7 ) is composed of a decorative outer layer of rigid fire resistant material  22   a  and a bonded core  22   b  of sound deadening material. Precut holes  22   c , located at the near bottom and center of the assembly accommodate the installation of two quad outlets for connectivity to cabling from within the wall panel. Shown at the bottom of wall panel surface  22  is a removable metal floor molding  22   d  that essentially matches the post design and provides matching quad outlet holes. When the panel quad outlets are not used, floor-molding  22   e  is installed. On each side and in the middle of the interior surface are three vertical panel latching angles  22   f  that provide wall panel rigidity and latch tabs  22   g  to attach the wall surface panels securely to the panel frame  20  ( FIGS. 13A-1  and  13 B- 1 .)  
         [0160]      FIG. 16A-1  shows the three-part construction of wall panel assembly  23  consisting of two wall panel surfaces  22  and a panel frame  20 . Once a panel frame  20  is locked in place to adjoining posts  18 , each panel surface  22 , in succession, is centrally positioned against and slightly above the panel frame  20  and between the inner vertical surfaces of the adjacent junction links  2  ( FIG. 16B-2 .) The Panel surface  22  is then slid downwards latching the panel latching tabs  22   f  into the latching slots  20   d  located on the three vertical surfaces of the panel frame  20 .  
         [0161]      FIG. 16B-1  is a top view of the panel assembly  23  and panel frame  20  installed with two junction lower plates  3   b  and posts  18 .  FIG. 16B-2  shows the wall panel ( 23  and  20 ) engaged between the inner surfaces of two supporting links  2 .  
         [heading-0162]     Doorframe and Door  
         [0163]     The invention preferably uses 3′ by 3′ ceiling tiles throughout to provide adequate dimensional clearance between posts  18  to accommodate full-sized doors.  FIG. 17A  shows an assembled view of a doorframe  24  positioned between posts  18 , in place of a panel frame  20  and wall panels  23 .  
         [0164]      FIG. 17B  is an exploded view of the doorframe made up of: (1) a vertical hinge surface  24   a , (2) a horizontal saddle  24   b , (3) a vertical door latch surface  24   c , (4) a horizontal upper doorframe  24   d , and (5) an upper door panel  24   e  to cover the opening formed above the upper door frame  24   d.    
         [0165]     In  FIG. 17C-1 , the horizontal saddle  24   b  is installed between posts  18  (only one shown) by inserting tabs  24   f  into post slots  18   j  and positioning the bottom of the saddle on the floor (not shown.) The saddle  24   b  can be fastened to the floor (1) using nails or screws, or (2) held in place by two-sided tape on its undersurface, or (3) fixed in place by a rubber strip on its underside combined with downwards pressure when the vertical hinge surface  24   a  and the vertical door latch surface  24   c  are locked in place.  
         [0166]     The vertical hinge  24   a  and latch  24   c  surfaces are latched in place using latches  24   g , a variation of panel latch  21  ( FIG. 17D-1 ) made up of which employs an Allen screw  24   h  and a smaller cam  24   j  instead of a knob and threaded shaft ( FIG. 17D-2 .) Latches are installed into post slots  18   j  following the procedure outlined in  FIG. 14 .  
         [0167]     In  FIG. 17E-1  two vertical doorstops  24   k  are installed over Allen screws  24   h  on latches  24   g  by positioning circular cutouts  24   m  over heads  24   n  and sliding doorstop inner slots  24   o  down onto Allen screw shoulder  24   p  while positioning the bottom of doorstop  24   k  into cutout  24   q  in each end of saddle  24   b.    
         [0168]      FIG. 17F  shows an exploded view from the bottom of upper doorframe  24   d , positioned above the two vertical doorstops  24   k . The cut outs  24   r  (see  FIG. 17G - 1 ,) at each end of the upper doorframe  24   d , are lowered and positioned over the top ends of doorstops  24   k  until surface  24   s  engages the tops of both doorstops  24   k . The panel latches  21  on each end of upper doorframe  24   d  are unscrewed and projected into post slot  18   j  and then tightened as the upper doorframe  24   d  is pressed down against doorstops  24   k , locking them in place.  
         [0169]     The upper door panel  24   t  is essentially made up of a sound absorbing inner core and two fire-resistant outer surfaces. The upper door panel  24   t  is positioned between posts  18  and is slid upwards until its upper outer surfaces are positioned between the inner surfaces  2   e  of the junction link  2  and its lower edge is centered above the horizontal upper doorframe  24   d . The upper door panel  24   e  is then lowered in place between the flanges  24   u  of upper doorframe  24   d.    
         [0170]     Once the doorframe assembly  24  is installed, the lift-off hinge segments  24   v  on door  24   m  are aligned with the hinge segments  24   w  and the door is lowered into place.  
         [heading-0171]     Partial Ceiling  
         [0172]     As mentioned above, the invention can be used in different ways. It is possible for an entire ceiling to be covered by the ductwork, in which case ceiling tiles  14   a  are simply dropped onto the flanges  6   a  and/or  7   a  of contiguous rails  6  and/or  7 . In some cases, it may be desirable to combine the ductwork matrix with an existing or new hung ceiling. For example, this may apply to the situation in which there is a ceiling area where in which it is unlikely that there would be a need for a cabling infrastructure and/or wall panels. Also, it may be practical to retrofit a single channel into and across an existing hung ceiling to facilitate the routing of cabling through an area.  FIG. 18  shows ceiling tiles  14   a  and standard T-grid railings  23  positioned on rail rims  6   c  just as T-grid railings of a hung ceiling are positioned on conventional wall angles (not shown) installed around the perimeter of an office area.  
         [heading-0173]     Structural Sizing to Area  
         [0174]     It is a requirement to be able to fit the installation to the actual dimensions of an office area. The rails  6  and  7 , duct panels  1   a  and  1   b , and junction links  2  can be readily cut to size. The perspective views of  FIGS. 19A and 19B  (exploded) illustrate a cut-off assembly of the aforementioned components (rail  6  only) properly affixed to the wall support bracket  10  and section of dry wall  11  by means of a rail termination bracket  12 . An end hanger bracket  28  supports the cut ends of the assemblies and installs in a similar fashion as the cabling support bracket  8  indicated in  FIG. 8A  to  8 C. Once in position, bracket  28  is pop riveted in place.  
         [0175]     To accommodate the sizing of wall panels to a room&#39;s perimeter an end panel frame  29  ( FIGS. 20A-1 ,  20 A- 2 , and  20 B) is used, which is a variation of the panel frame  20 . The end panel frame  29  can be easily cut to size. An end wall member  30  is positioned and affixed to a section of dry wall  11  using conventional attachment hardware. The panel frame upper horizontal members  29   a  and lower horizontal member  29   b  are cut to size and positioned with their cut side fitted to the end wall bracket  30 . The post side  29   c  of the end panel frame  29  is attached to post  18  in the same fashion as the installation of the panel frame  20  depicted in  FIG. 13A . The cut sections of panel frame  29   a  and  29   b  are drilled and pop riveted to the end wall bracket  30 . Cut to size panel surfaces  22  and floor moldings  22   e  are then installed in a fashion similar to  FIG. 16A .  
         [0176]     A direct benefit of the invention is the ability to maintain all cabling overhead but not over the ceiling. In the case of a computer or server room, cabling emanating from equipment can be guided upward into the openings at the bottom of the ductwork for distribution throughout the office space ( FIG. 21A ). No expensive raised floors or under floor routing of the cable is needed.  
         [0177]     It may also be desirable to simply direct the cabling downwardly to the floor or to furniture without the installation of the posts  18  or wall panels  23 . In such a case, a vertical column  32  ( FIG. 21B ) may be provided into which the cabling  9  can be directed. Suitable connectors on the column are provided to interface the cabling with equipment.  
         [0178]     Although preferred embodiments have been illustrated and described in this application, numerous modications of the invention are contemplated. In the preferred embodiment, the ceiling tiles are mounted in rails extending between adjacent junctions. It is also possible that the ceiling tiles may be supported on the junctions or on the cabling ductwork extending between the junctions. Likewise, in the currently preferred embodiment, the ductwork extends down from the ceiling tiles, but the position of the ducts relative to the ceiling tiles is not critical. The illustrated preferred embodiment provides certain structural and cost benefits, but many different arrangements are possible which would provide strutural support for a hung ceiling and a cabling pathway in accordance with the invention.