U.S. patent application number 11/590618 was filed with the patent office on 2008-05-01 for three-dimensional cover tile.
Invention is credited to Anthony McConnell, Randolph Woellper.
Application Number | 20080098680 11/590618 |
Document ID | / |
Family ID | 39328479 |
Filed Date | 2008-05-01 |
United States Patent
Application |
20080098680 |
Kind Code |
A1 |
McConnell; Anthony ; et
al. |
May 1, 2008 |
Three-dimensional cover tile
Abstract
A wall panel system having a wall panel frame and
three-dimensional cover tiles is provided. Such cover tiles overlie
an open interior frame region and demountably engage the panel
frame. These cover tiles are provided with a relatively shallow
thickness but are formed with various formations including storage
pockets and the like which allow office items and other articles to
be stored directly in the cover tile as opposed to add-on
components which mount over the face of a conventional planar cover
tile.
Inventors: |
McConnell; Anthony;
(Zeeland, MI) ; Woellper; Randolph; (Hudsonville,
MI) |
Correspondence
Address: |
FLYNN, THIEL, BOUTELL & TANIS, P.C.
2026 RAMBLING ROAD
KALAMAZOO
MI
49008-1631
US
|
Family ID: |
39328479 |
Appl. No.: |
11/590618 |
Filed: |
October 31, 2006 |
Current U.S.
Class: |
52/360 |
Current CPC
Class: |
E04B 2002/7483 20130101;
E04B 2/7416 20130101 |
Class at
Publication: |
52/360 |
International
Class: |
E04F 13/04 20060101
E04F013/04 |
Claims
1. A cover tile for a wall panel comprising: a back panel having
edge portions and an interior portion disposed laterally between
said edge portions, said back panel being a shape which is enlarged
laterally and vertically so as to overlie a portion of a wall panel
frame; and a front panel in a shape corresponding to the back panel
and being adapted to fit over said back panel in facing relation to
define a front-back panel assembly, said front panel comprising
edge portions which extend about and are disposed closely adjacent
to said edge portions of said back panel for securing said front
and back panel together, said front panel further including an
interior portion disposed laterally between said edge portions of
said front panel, wherein said interior portions of said front and
back panel define opposing compartment walls to define a storage
compartment which is open from an exterior of said cover tile to
permit the storage and insertion of articles within said storage
compartment and to permit the storage of said articles on said
cover tile.
2. The cover tile according to claim 1, wherein said cover tile
includes an elongate rail member extending laterally across a
portion of said cover tile and being joined to said front-back
panel assembly, said rail member defining a front wall of a further
storage compartment disposed forwardly of an opposing wall of said
back panel to define an additional storage compartment area which
is accessible from an exterior forward side of said cover tile.
3. The cover tile according to claim 1, wherein said back panel is
formed with an opening in which is mounted an insert that allows
for fastening of additional articles on said cover tile.
4. The cover tile according to claim 3, wherein said insert
comprises a tack-board material and said articles comprise
piercable articles which may be hung on said insert by
fasteners.
5. The cover tile according to claim 3, wherein an electrical
component is mounted to said insert and has an exposed portion
accessible through a front face of said insert from an exterior of
said cover tile.
6. The cover tile according to claim 5, wherein said electrical
component is an electrical receptacle that is connectable to at
least one of power cabling and data cabling.
7. The cover tile according to claim 1, wherein said edge portions
of said back panel and said front panel are spaced apart from each
other to define interior channels extending widthwise across said
cover tile.
8. The cover tile according to claim 7, wherein said front-back
panel assembly includes sound-dampening inserts extending
interiorally of said channels, said edge portion of said front
panel further including patterns of openings which open into said
channels wherein said sound-dampening inserts serve to dampen sound
waves passing through said openings.
9. The tile according to claim 8, wherein said edge portions
comprise ventilation passages wherein driven air flows through said
passages and exits through said groups of openings.
10. A wall panel assembly comprising: an upright wall panel frame;
and a cover tile assembly comprising a back panel having edge
portions and an interior portion disposed laterally between said
edge portions, said back panel being a shape which is enlarged
laterally and vertically so as to overlie a portion of a wall panel
frame; and a front panel in a shape corresponding to the back panel
and being adapted to fit over said back panel in facing relation to
define a front-back panel assembly, said front panel comprising
edge portions which extend about and are disposed closely adjacent
to said edge portions of said back panel for securing said front
and back panel together, said front panel further including an
interior portion disposed between said edge portions of said front
panel, wherein said interior portions of said front and back panel
define opposing compartment walls to define a storage compartment
which is open from an exterior of said cover tile to permit the
storage and insertion of articles within said storage compartment
and to permit the storage of said articles on said cover tile.
11. The wall panel assembly according to claim 10, wherein said
cover tile includes an elongate rail member extending laterally
across a portion of said cover tile and being joined to said
front-back panel assembly, said rail member defining a front wall
of a further storage compartment disposed forwardly of an opposing
wall of said back panel to define an additional storage compartment
area which is accessible from an exterior, forward side of said
cover tile.
12. The wall panel assembly according to claim 10, wherein said
back panel is formed with an opening in which is mounted an insert
that allows for fastening of additional articles on said cover
tile.
13. The wall panel assembly according to claim 10, wherein said
wall panel frame comprises horizontal and vertical frame members
which define open interior regions of said panel frame.
14. The wall panel assembly according to claim 13, wherein an
electrical component is mounted on said insert and has a front
receptacle portion which is accessible through a front of said
insert from an exterior of said cover tile, said receptacle portion
being connected to cabling which extends into said frame
interior.
15. The wall panel assembly according to claim 10, wherein said
edge portions of said front and back panels define channels
extending through the interior of said front and back panel
assembly and have groups of openings which open through said edge
portions of said front panel openings between said passages and an
exterior of said cover tile.
16. The wall panel assembly according to claim 15, wherein said
passages include sound-dampening strips disposed on interior faces
of said passages which dampen sound waves passing through said
openings.
17. A wall panel assembly comprising: a wall panel frame; and a
cover tile assembly comprising a back panel having edge portions
and an interior portion disposed laterally between said edge
portions, said back panel being a shape which is enlarged laterally
and vertically so as to overlie a portion of a wall panel frame; a
front panel in a shape corresponding to the back panel and being
adapted to fit over said back panel in facing relation to define a
front-back panel assembly, said front panel comprising edge
portions which extend about and are disposed closely adjacent to
said edge portions of said back panel for securing said front and
back panel together, said front panel further including an interior
portion disposed between said edge portions of said front panel,
wherein said interior portions of said front and back panel define
opposing compartment walls to define a storage compartment which is
open from an exterior of said cover tile to permit the storage and
insertion of articles within said storage compartment and to permit
the storage of said articles on said cover tile; and said edge
portions of said front and back panels including passages disposed
interiorally of said front-back panel assembly and having groups of
openings through said edge portions of said front panel to define
passages between said interior passages and an exterior of said
cover tile.
18. The wall panel assembly according to claim 17, wherein passages
define ventilation passages for the passage of ventilation air
therethrough.
19. The wall panel assembly according to claim 18, wherein said
passages include sound-dampening materials which dampen sound waves
within said passages.
20. The wall panel assembly according to claim 17, wherein said
back panel includes an insert mounted thereon having a front face
which is accessible through a window in said front-back panel
assembly, said front face of said insert being configured to permit
one of the mounting of separate articles to said front face and a
port for an electrical component mounted on said insert wherein
cabling extends rearwardly into open interior regions of said panel
frame.
Description
FIELD OF THE INVENTION
[0001] The invention relates to a wall panel system having one or
more three-dimensional cover tiles, and in particular, to a cover
tile for such a wall panel system which serves to not only cover
the interior of a wall panel but also serve additional functions
such as storage or ventilation.
BACKGROUND OF THE INVENTION
[0002] In conventional office spaces, larger spaces are subdivided
by known space-dividing wall panel systems. Such wall panel systems
comprise an interior panel frame defining open areas within the
frame, and a plurality of substantially flat or planar cover tiles
which are removably mounted onto the frame so as to overlie and
cover the open frame interior.
[0003] Primarily, such conventional planar cover tiles are
substantially flat in the vertical dimension and have outward
facing exterior surfaces which define the finished aesthetic
appearance of the wall panel. The finished exterior surface of the
cover tile typically is flat or at least has an exposed surface
texture, such as fabric, which serves an aesthetic function.
[0004] In known wall panel systems, such systems further include
various add-on accessories and structures which mount to the panel
frame separate from the cover tile and are disposed outwardly of
the cover tile surface to provide for storage in office areas or
workstations defined by the wall panel system. For example, such
add-on accessories may include overhead storage units, shelving,
and racks on which additional shelves and smaller accessories are
hung. Such systems require components separate from the cover tiles
and result in additional complexity for the wall panel system since
it requires a mounting arrangement not only for the cover tiles but
also for the add-on accessories. Further, such accessories project
outwardly of the face of the cover tile surfaces a noticeable
distance which may be undesirable in some environments and specific
applications.
[0005] It is an object of the invention to provide an improved
cover tile which not only defines an aesthetic appearance for the
wall panel, but also provides for storage capacity and other
functions.
[0006] The invention thereby relates to a wall panel system
comprising a basic wall panel frame defining an open interior
therein. The invention further includes one or more
three-dimensional cover tiles which each extend laterally across
the width of its respective wall panel frame and extend a
pre-defined vertical distance so as to overlie and enclose at least
a portion, if not all, of an open interior region of the wall panel
frame.
[0007] In particular, these three-dimensional cover tiles are
formed so as to have a back portion which includes tile connectors
thereon that are removably engagable with the wall panel frame. The
cover tiles further include front portions which project outwardly
a necessary distance away from the back portion and are configured
to include storage formations therein such as pockets and the
like.
[0008] Sections of the front and back portions of the cover tile
have exposed exterior surfaces which define the aesthetic face of
the wall panel frame when provided in combination with other
three-dimensional cover tiles and/or planar cover tiles. Hence,
these three-dimensional cover tiles define a storage capacity
and/or other different functional capacities in the cover tile
since the cover tile is enlarged in three dimensions, not only
laterally and vertically, but also outwardly away from the panel
frame. This additional storage capacity is provided in a limited
outward depth so that the thickness of the cover tile is still
relatively shallow and provides the desired storage capacity in a
smaller outward distance as compared to conventional add-on
components which mount over the face of a conventional planar cover
tile.
[0009] Other objects and purposes of the invention, and variations
thereof, will be apparent upon reading the following specification
and inspecting the accompanying drawings.
BRIEF DESCRIPTION OF THE DRAWINGS
[0010] FIG. 1 is a perspective view of a wall panel arrangement
have a three-dimensional cover tile mounted thereto.
[0011] FIG. 2 is a front elevational view of an assembled
three-dimensional cover tile.
[0012] FIG. 3 is a front view of a back panel of the cover tile
assembly.
[0013] FIG. 4 is a side cross-sectional view of the back panel as
taken along line 4-4 of FIG. 3.
[0014] FIG. 5 is a side cross-sectional view as taken along line
5-5 of FIG. 3.
[0015] FIG. 6 is a partial side cross-sectional view of the tile
assembly as taken along line 6-6 of FIG. 2.
[0016] FIG. 7 is a front view of a front panel of the cover tile
assembly.
[0017] FIG. 8 is a bottom cross-sectional view of the front panel
as taken along line 8-8 of FIG. 7.
[0018] FIG. 9 is a side cross-sectional view of the front panel as
taken along line 9-9 of FIG. 7.
[0019] FIG. 10 is a side cross-sectional view of the cover tile
assembly as taken along line 10-10 of FIG. 2.
[0020] FIG. 11 is a side cross-sectional view as taken along line
11-11 of FIG. 2.
[0021] FIG. 12 is a side cross-sectional view of the cover tile of
FIG. 10 mounted to a wall panel frame.
[0022] FIG. 13 is a side cross-sectional view of the cover tile
assembly of FIG. 11 mounted to the wall panel frame.
[0023] FIG. 14 illustrates a further cross-sectional view of the
cover tile mounted to the panel frame.
[0024] Certain terminology will be used in the following
description for convenience and reference only, and will not be
limiting. For example, the words "upwardly", "downwardly",
"rightwardly" and "leftwardly" will refer to directions in the
drawings to which reference is made. The words "inwardly" and
"outwardly" will refer to directions toward and away from,
respectively, the geometric center of the arrangement and
designated parts thereof. Said terminology will include the words
specifically mentioned, derivatives thereof, and words of similar
import.
DETAILED DESCRIPTION
[0025] Referring to FIG. 1, a wall panel system 10 of the invention
is illustrated which comprises a plurality of wall panels 11 joined
together in end-to-end relation. Each wall panel 11 generally
comprises an interior load-bearing wall panel frame 12 (FIGS. 1 and
14), wherein the interior panel frames 12 include a plurality of
cover tiles 14 mounted thereto so as to overlie the open interior
of the panel frames 12 and provide aesthetic finished surfaces 15.
One of the exemplary wall panels 11 may also have a glass-type
panel insert 17 mounted thereto which is illustrated in FIG. 1 for
illustrative purposes.
[0026] Additionally, a three-dimensional cover tile 16 of the
invention is also provided on a respective wall panel frame 12
which provides additional functionality over and above the planar
cover tiles 14 which primarily serve to define the aesthetic
exterior surface of the wall panel 11. The three-dimensional cover
tile 16 of the invention provides this additional functionality,
such as storage and ventilation functions, which functions are
incorporated directly into the cover tile 16 rather than through
separate, add-on panel components as will be discussed in further
detail hereinafter.
[0027] More particularly as to the wall panel system 10, the panel
frames 12 as illustrated in FIGS. 12-14 have any conventional
construction which typically is defined by a plurality of vertical
frame members 18 and horizontal frame members 19 rigidly joined
together, such as by welding. Generally, conventional panel frames
12 have the horizontal frame members 19 located at the top and
bottom of the wall panel 11 and also include additional horizontal
frame members 19 disposed at intermediate positions such as
position 20 in FIGS. 12-14. It is noted that the three-dimensional
cover tile 16 of the invention is readily adaptable to any
conventional wall panel frame 12 and may be demountably engaged to
the panel frame 12 through any conventional connector arrangement.
Generally, the panel frame 12 defines open interior regions 21
disposed vertically between the horizontal frame members 19 wherein
the planar cover tiles 14 or the three-dimensional cover tile(s) 16
are removably engaged with the panel frame 12 so as to overlie and
enclose these open frame regions 21.
[0028] The wall panel system 10 also is configured so as to include
additional add-on components such as the illustrated work surface
23 (FIG. 1) or other conventional types of add-on components such
as overhead storage units, mounting brackets for accessories, and
the like. Generally, these add-on components such as the work
surface 23 include appropriate mounting brackets for engagement
with the panel frames 12 so as to rigidly mount such add-on
components to the panel frame 12 outwardly of the exposed exterior
surfaces 15 of the various cover tiles 14. Such add-on components
also may be disposed outwardly of the three-dimensional cover tile
16 where necessary, although due to the added functionality
provided by this cover tile 16, it would be preferred to not
position add-on components in overlying relation with the cover
tile 16 since such might interfere with the storage and ventilation
functions being performed thereby.
[0029] Referring more particularly to FIG. 2, the three-dimensional
cover tile 16 is illustrated, wherein the cover tile 16 comprises a
back panel 25 which includes a plurality of connectors 26 depicted
in phantom outline for connecting the cover tile to the panel frame
12. The cover tile 16 further includes a front panel 28 which is
mounted in overlying, facing relation with back panel 25.
[0030] The interior region 29 of the assembly of the tile panels 25
and 28 comprises a tack board or other insert 30 which may be used
for the mounting of messages thereto or if such insert 30 is a
whiteboard material, messages may be written thereon. Additionally,
the rear panel 25 and front panel 28 are configured so as to be
spaced away from each other within this interior region 29 and
define a storage pocket 31 in which may be stored various articles
32, such as a sheet of paper, booklet or other generally
rectangular, thin articles. In the area located laterally between
the storage pocket 31 and the insert 30, a rail 35 is provided
which extends horizontally thereacross and forms an additional
intermediate storage region which is an extension of the closed
pocket 31.
[0031] More particularly as to the individual components, and the
final assembly thereof, the following discussion first turns to the
configuration of the back panel or back portion 25 (FIGS. 3-5).
This back panel 25 has a generally rectangular shape formed by
peripheral edge portion 36. As to the cross section of FIG. 4, this
peripheral edge portion 36 as it extends along the top and bottom
of the back panel 25 is defined by top and bottom edge walls or
flanges 37 and 38 which extend generally rearwardly and also extend
forwardly and curve interiorally.
[0032] Towards the left end of the cover tile 16, the cross section
of FIG. 4 extends through a left side portion of this rear panel 25
through a triangular window 42 formed therein. This triangular
window 42 extends through the thickness of the front wall 41
wherein the insert 30 is then mounted to the back face of the front
wall 41. As such, the front face 43 (FIG. 2) of this insert 30 is
thereby visible and accessible through the window 42 for the
fastening of notes, messages and the like (43A) thereon by
fasteners 43B if such insert 30 is a tackboard. Thus, the cover
tile 16 also provides a messaging function or other indicia
supporting function.
[0033] Generally, the back portion 25 as seen in FIG. 4 also
supports the tile connectors 26 thereon as diagrammatically
illustrated in FIG. 4. These connectors 26 may be conventional
hooks or resilient catches which releasably engage the cover tile
assembly 16 onto the panel frame 12.
[0034] Additionally as to the cross-sectional view of FIG. 4, a
notch 45 is provided through the thickness of the back panel 25
near the bottom corner of the window 42 so as to support the
leftward end of the rail 35 as will be discussed in further detail
hereinafter.
[0035] As will also be described in further detail, the face of the
front wall 41 also includes elongate strips of a sound-dampening or
deadening material 47 and 48 such as a fabric. The function of the
sound-dampening material strips 47 and 48 will be described in
further detail relative to the ventilation function which may be
performed through this cover tile 16.
[0036] Referring to the cross-sectional view of FIG. 5, this cross
section is generally taken through the center portion of the back
panel 25 and further illustrates the shape of the upper and lower
front wall portions 39 and 40 which terminate along the perimetral
edge of the back panel 25 through the edge walls 37 and 38. In the
center region 29, the front wall 41 bends rearwardly away from the
front face walls 39 and 40 to define a depressed cavity portion 50.
This cavity portion 50 is primarily defined by a cavity wall 51
which has the shape generally illustrated in FIG. 3 and is bounded
by the cavity edge 52 which extends about the periphery of the
cavity wall 51.
[0037] Referring more particularly as to FIGS. 6-9, the front panel
28 is illustrated. This front panel 28 comprises perimetral side
edges 55-58 which generally extend rearwardly and terminate at the
rear edge 59. The front panel 26 further includes a front wall 60
which is defined by upper and lower wall portions 61 and 62, left
side portion 63 and right side portion 64. It is noted that the
upper wall portion 61 is provided with two elongate horizontal rows
of staggered openings 65 while the bottom wall portion 62 includes
generally S-shaped openings 66 extending across the width of the
front panel 26. Additionally, the front wall 60 is formed with a
window 70 which opens through the thickness of the front panel
28.
[0038] Preferably, both the rear and front panels 25 and 28 are
formed of a molded plastic which is readily shapable and moldable
to provide the desired three-dimensional configuration described
above relative to FIGS. 3-9. Generally, these back and front panels
25 and 28 are configured to fit one over the other with the front
panel 28 fitting over the back panel 25 wherein the respective side
edges fit one over the other in adjacent abutting relation as best
illustrated in FIGS. 6 and 12-14. When fitted together, the front
panel 28 has the front wall portions 61 and 62 spaced forwardly of
the opposing back wall portions 39 and 40 of the back panel 25.
These opposing wall portions 39 and 61 as seen in FIG. 6 define a
horizontal passage 71 which extends horizontally across the width
of the cover tile 16 along the length of the pattern of the
openings 65. This space 71 is also provided even with the presence
of the sound-dampening fabric strip 47 as seen in FIG. 6.
[0039] Referring to FIG. 10, the bottom wall portions 40 and 62
make a similar bottom passageway or channel 72 also extending
across the width of the cover tile 16 along the length of the
pattern of openings 66. As such, the three-dimensional cover tile
16 is provided with horizontal passageways with groups or patterns
of exit openings 65 and 66 that open forwardly towards a work
station area.
[0040] In one embodiment, these passageways 71 and 72 may be used
for ventilation where desired to allow the passage of an air flow
through such passages 71 and 72 and allow for air to be blown
through the patterns of openings 65 and 66. Where such ventilation
function is performed by the cover tile 16, the back panel 26 may
be provided with inlet passages or ports such as ports 75 and 76
which are diagrammatically illustrated in a center position in the
panel wall 41. Such ports 75 and 76 may be rectangular ports
extending entirely through the panel wall 41 wherein, in such
instance, the center portions of the strips 77 would be removed in
the region of these inlet ports 75 and 76. As such, ventilation air
may be passed through these inlet ports 75 and 76 from the hollow
frame interior 21 wherein the air is generally illustrated flowing
into this region by reference arrows 80 of FIG. 6 wherein such air
flow would pass through the passages 71 and 72 and be allowed to
exit through the wall portions 61 and 62 as indicated by reference
arrows 81 in FIG. 6. The patterns of the openings 65 and 66
essentially define exit ports or passages for the ventilation flow.
It will be understood that the shapes and patterns as well as the
sizes of these openings 65 and 66 may be readily varied depending
upon the total air flow desired and the overall design of the
heating and ventilation system to which the passages 71 and 72 may
be connected. Because of these patterns of openings 65 and 66, the
sound-dampening fabric strips 47 and 48 may be provided.
[0041] Alternatively, the ports 75 and 76 may also be eliminated or
omitted while the patterns of openings 65 and 66 are still
provided. In such an instance, these panel openings 65 and 66 may
perform the additional function of dampening sound since it allows
for the passage of sound through these openings 65 and 66 wherein
the sound waves are then dampened or reduced by striking the
dampening strips 47 and 48.
[0042] Referring more particularly to FIG. 10, the assembly therein
is illustrated with the tackboard insert 30 attached to the inside
face of the front panel wall 41 of the back panel 25. This insert
30 thereby has the front face 43 thereof facing forwardly that is
accessible through the window 42.
[0043] With respect to the compartment rail 35, this compartment
rail 35 comprises a top stiffener rail 85 which extends along the
upper length thereof as seen in FIGS. 2 and 10 and also has a wire
mesh portion 86 extending downwardly from the extruded metal
stiffener rail 85. The leftward end of the stiffener rail 87 is
illustrated in FIG. 2 as projecting leftwardly and rearwardly
through the panel wall 41 of the back panel 26 as also illustrated
in FIG. 10. This left rail end 87 is accommodated by the notch 45
(FIG. 3) formed in the left end region of the back panel 25 so as
to rigidly secure the stiffener rail 85 in place by suitable
fasteners or preferably, adhesives which are adhered to the tile
panels 25 and 26. The bottom edge 88 of the wire mesh 86 is also
secured or affixed by suitable adhesives between the opposing
surfaces of the front panel 25 and rear panel 26 as seen in FIG.
10.
[0044] Moving rightwardly across the cover tile 16, FIG. 11
illustrates that a horizontally elongate, relatively shallow
storage compartment 90 is thereby formed behind the rail 35 and the
opposing compartment wall 70 that is formed in the compartment
wall.
[0045] Referring to FIG. 13, the cover tile 16 is mounted onto the
panel frame 12 wherein FIG. 13 illustrates an additional article 91
which is supported within this additional storage compartment 90.
The storage compartment 90 opens upwardly and is able to
accommodate paper-size materials or smaller items such as floppy
disks, booklets and the like.
[0046] Turning next to the cross section of FIG. 14, the rightward
end of the compartment rail 35 is identified by reference numeral
93 wherein this rail end 93 is fixedly adhered to the inside face
of the right wall portion 64 of the front panel 28. More
particularly as seen in FIG. 14, the front wall portion 64 as well
as the interior compartment wall 51 define the sideward opening
storage pocket 31 previously referenced in FIG. 2, which
compartment 31 is configured to store various articles thereon such
as article 32 (FIGS. 2 and 14).
[0047] Referring additionally to FIG. 12, it is noted that the
insert 30 may also be used to support additional components such as
an electrical receptacle 100 which is supplied with electricity by
cabling 101 that extends into the frame interior 21. This
receptacle 100 may include a face plate 102 that mounts to insert
panel 30 as diagrammatically illustrated in the front view of FIG.
2. Thus, the cover tile 16 may also have an electrical
functionality and this receptacle 100 not only may be a power
supply, but also could be a data or telecommunications receptacle
of a generally conventional configuration.
[0048] With the foregoing arrangement, the cover tile 16 may be
readily designed as a component of a wall panel system 10 in the
design phase. Alternatively, the cover tile 16 may have the same
general size and shape and connectors as an existing planar cover
tile 14 such that if desired, the three-dimensional cover tile 16
may be inserted in place of an existing planar cover tile.
[0049] Although particular preferred embodiments of the invention
have been disclosed in detail for illustrative purposes, it will be
recognized that variations or modifications of the disclosed
apparatus, including the rearrangement of parts, lie within the
scope of the present invention.
* * * * *