U.S. patent number 3,710,520 [Application Number 05/116,171] was granted by the patent office on 1973-01-16 for utility frame for suspended ceiling construction.
Invention is credited to Samuel R. Federowicz.
United States Patent |
3,710,520 |
Federowicz |
January 16, 1973 |
UTILITY FRAME FOR SUSPENDED CEILING CONSTRUCTION
Abstract
A one-piece utility frame for access tiles and the like is
provided for use in a suspended ceiling tile construction of the
flush mounted type. The frame consists of a generally rectangular
frame body portion substantially equal in size to a ceiling tile
and having a flat exposed bottom surface, an integral lip
projecting inwardly from the body portion and defining a central
access opening bounded by the frame, said lip forming a
continuation of said exposed bottom surface and forming a ledge for
supporting an access tile in said opening, and a frame-mounting
flange secured to said body portion in spaced overlying
relationship therewith and forming an outwardly facing notch
mountable on a Z-bar flange for supporting the frame and
positioning the exposed bottom surface in flush-mounted
relationship with adjacent tiles of the ceiling construction.
Inventors: |
Federowicz; Samuel R. (Windsor,
CT) |
Family
ID: |
22365675 |
Appl.
No.: |
05/116,171 |
Filed: |
February 17, 1971 |
Current U.S.
Class: |
52/27; 362/150;
52/506.07; 362/149 |
Current CPC
Class: |
E04B
9/28 (20130101); E04B 9/003 (20130101); E04B
9/006 (20130101) |
Current International
Class: |
E04B
9/00 (20060101); E04B 9/22 (20060101); E04B
9/28 (20060101); E04b 005/55 (); E04c 002/38 ();
E21s 003/08 () |
Field of
Search: |
;52/496,475,476,484,656,27,28,144,145 ;240/9R,9A |
References Cited
[Referenced By]
U.S. Patent Documents
Primary Examiner: Faw, Jr.; Price C.
Claims
I claim:
1. A one-piece utility frame for access tiles and the like in a
ceiling construction comprised of concealed suspended Z-bars and a
plurality of flush mounted bar-concealing ceiling tile, the frame
comprising a generally rectangular band-like frame body portion
having a flat exposed bottom surface, an integral lip projecting
inwardly from the band-like body portion and defining a central
access opening bounded by the one-piece frame, said lip forming a
planar continuation of said exposed bottom surface and forming a
ledge for supporting an access tile and the like in said opening,
and a frame-mounting flange integral with said body portion and
fixedly positioned in spaced overlying relationship therewith, said
fixed flange and said body portion forming an outwardly facing
notch, said one-piece frame having sufficient flexure to permit
snap-on mounting of said notch on the Z-bars for supporting said
one-piece frame thereon.
2. The utility frame of claim 1 wherein the fixed mounting flange
is substantially parallel to the exposed bottom surface of the body
portion and is of shorter cross-sectional length to facilitate
mounting on the Z-bar while preserving the flush configuration of
the ceiling construction.
3. The utility frame of claim 1 wherein the frame is constructed of
sturdy, slightly flexible plastic material.
4. The utility frame of claim 1 wherein the body portion has a
height sufficient for positioning said flat exposed bottom surface
in a common horizontal plane with the exposed surface of the
ceiling tile.
Description
BACKGROUND AND SUMMARY OF THE INVENTION
The present invention relates generally to auxiliary or suspended
ceiling construction of the flush surface type and is more
particularly directed to a new and improved utility frame for
access tiles and the like.
Suspended ceiling systems have obtained rather widespread
acceptance for use in new construction as well as in renovation of
older buildings. Regardless of the type of use, they advantageously
provide concealment of utility appurtenances such as heating,
ventilating or air conditioning ducts, electrical conduits, wiring,
valves, plumbing and the like which are attached in spaced relation
to the overhead structural framing of the building. It is, of
course, desirable that the ceiling not only enclose these
appurtenances but at the same time provide means whereby ready
access may be had thereto for suitable maintenance and repair.
Additionally, it is necessary that certain devices such as light
fixtures, air vents and the like, readily blend into the ceiling
construction without substantially altering the aesthetic or
decorative effect of the exposed ceiling surface.
Heretofore in order to obtain this flush surface effect yet provide
the desired accessibility, it has been necessary to either provide
complex mechanical supporting arrangements within the concealed
space or, where the load is light, support the utility frame on
adjacent ceiling tiles. Unfortunately, the former required
expensive and time consuming installation while the inherent
weakness of the tiles frequently caused breakage and impairment of
the decorative appearance.
Accordingly, it is a primary object of the present invention to
provide a new and improved utility frame for flush type acoustical
ceilings which is free of protruding brackets, yet is adapted for
quick and easy snap-on installation on the existing ceiling
gridwork.
Another object of the present invention is to provide a sturdy and
durable utility frame of the type described designed for labor
saving installation and flush surface type ceiling decor. Included
in this object is the provision for a new and improved utility
frame for access tiles and the like which can be easily and simply
snapped into place on the supporting grid of a suspended ceiling to
fully conceal the area above the tiles yet permit repeated access
thereto without the necessity of releasing fastening members or
manipulating special brackets.
Other objects will be in part obvious and in part pointed out in
more detail hereinafter.
These and related objects are accomplished in accordance with the
present invention by providing a one piece utility frame for access
tiles and the like comprising a generally rectangular frame body
portion having a flat bottom surface and at least one planar
dimension equal to the width of a ceiling tile; an integral lip
projecting inwardly of the body portion and defining a central
access opening bounded by the frame, said lip forming a
continuation of said bottom surface and forming a ledge for
supporting an access tile or the like; and a frame mounting flange
secured to said body portion in spaced overlying relationship
therewith to form an outwardly facing notch for supportably
mounting the frame on a support grid member of the ceiling
structure.
A better understanding of the objects, advantages, features,
properties and relationships of the invention will be obtained from
the following detailed description and accompanying drawing which
set forth illustrative embodiments and are indicative of the ways
in which the principles of the invention are employed.
BRIEF DESCRIPTION OF THE DRAWING
In the drawing:
FIG. 1 is a perspective view of a portion of a suspended ceiling
construction depicting one embodiment of a utility frame of the
present invention as it is being installed therein;
FIG. 2 is a sectional view of one side of the utility frame of FIG.
1 secured to a supporting grid and mounting an access tile;
FIG. 3 is a sectional view of one side of another embodiment of the
utility frame of the present invention; and
FIG. 4 is a sectional view similar to FIG. 3 illustrating still
another embodiment of the frame.
DESCRIPTION OF THE PREFERRED EMBODIMENT
Referring now to the drawing in greater detail wherein like
reference numerals indicate like parts throughout the several
figures, there is shown a suspended ceiling construction of a
conventional type utilizing a plurality of generally square ceiling
tiles 10 arranged in parallel abutting rows to form an
uninterrupted exposed ceiling surface. The rows of tile may be
suspendably supported in any conventional manner so that the edges
of the tile are positioned beneath the supporting grid and the
tiles are in a common horizontal plane. In the embodiment depicted
in FIG. 1, the support includes a plurality of elongated channels
or beams 12 suspended from the frame of the building (not shown) by
means of spaced wire hangers 14. A plurality of tile-supporting
grid members 16, generally referred to as "Z-bars", are securely
affixed to the channels 12 at substantially a right angle thereto
by the U-shaped brackets 18. The grid members 16 are arranged in
parallel relationship within a plane immediately below the channels
12 and are spaced from each other by a distance approximately equal
to the width of the ceiling tiles to be installed thereon.
The Z-bars 16 are long rail-like sheet metal members having a
vertically disposed central body portion 24 with a top flange 26
extending outwardly from one side thereof at substantially a right
angle thereto. As shown, the flange 26 is held in flat abutting
relationship with the support channels 12 and facilitates secure
positioning of the Z-bar as well as firm attachment thereof to the
channels 12 by the brackets 18. The bottom edge of the Z-bar's main
body portion is provided with an integral crossbar in the form of a
pair of flanges 30, 32 extending outwardly an equal distance from
opposite sides of the body portion 24 at a right angle thereto.
As best shown in FIG. 2, the sides of each tile 10 are provided
with a central notch or kerf 34 defining upper and lower peripheral
side portions 36, 38 respectively. As is well known to those
skilled in the art the upper peripheral portion 36 is recessed or
set back relative to the lower portion 38 to permit insertion of
the Z-bar flanges 30 and 32 into the kerfs 34 of the tile as the
tile is mounted thereon. It also will be appreciated that the
greater peripheral extent of the tile's lower portion 38
facilitates a flush abutting relationship between adjacent tiles
and fully conceals the supporting grid members to provide the
desired decorative effect.
In accordance with the present invention an access tile frame
member 40 can be installed in place of a conventional tile to
provide access to the utility appurtenances concealed by the
ceiling or to mount an air vent, high hat or other lighting fixture
within the ceiling. The frame 40 is identical in width to the width
of a tile and also may be equal in length thereto or may have a
length which is a multiple of the normal length of the ceiling tile
so as to accommodate elongated lighting units such as those of the
fluorescent tyPe. Accordingly, the frame is a generally rectangular
member consisting essentially of a main body portion 42, shown in
FIG. 2 as having a solid, essentially square cross-sectional
configuration equal in thickness or height to the lower peripheral
side portion 38 of an adjacent ceiling tile and therefore having a
bottom or exposed surface 44 flush with the exposed surface 46 of
the tile 10. An overlying flange 50 of shorter cross-sectional
length than the body portion 42 is integrally connected thereto and
together therewith define an outwardly facing notch 52 along each
edge thereof similar to the kerf 34 of the ceiling tile. The outer
peripheral edge 54 of the frame member 40 is of substantially the
same size as a conventional tile and will mate with immediately
adjacent tiles supported on the Z-bars so that upon installation it
is in confronting abutting relationship with tile portion 38 and
imparts the desired smooth and flush appearance to the ceiling.
Integral with the main body portion 42 is an inwardly projecting
lip 56 having an outer or exposed surface forming a continuation of
surface 46. The lip 56 defines a central access opening within
which an access tile 60 or other utility unit such as the high hat
62 of FIG. 1 may be positioned and also provides a firm and sturdy
ledge on which such a unit may rest.
The frame member 40 is preferably made of a sturdy yet slightly
flexible material such as plastic, aluminum or the like, capable of
bending slightly during installation in the manner illustrated in
FIG. 1. Thus, it will be appreciated that one edge of the frame
member may be initially secured to the Z-bar by inserting the
crossbar flange 32 within the notch 52 defined by the supporting
flange 50 and central body portion 42 of the frame, bending the
frame to impart a slight curvature thereto and mounting the
opposite edge of the frame member on the adjacent Z-bar flange 30.
The frame will readily slide over the edge of the Z-bar's flange
and its inherent resiliency will immediately draw the frame into
its flat fully mounted position ready for receiving an access panel
or other member which can be easily passed through the opening in
the frame and supported on the inwardly projecting lip 56 in the
manner shown in FIG. 2.
It will be appreciated that variations of the frame structure of
the present invention can be utilized, such as the structures
illustrated in FIGS. 3 and 4 of the drawing. In FIG. 3 the central
core of the frame's main body portion 42' has been eliminated to
lighten the frame while retaining all external features unchanged.
In the embodiment depicted in FIG. 4, a portion of the nonexposed
side wall 54' of the central body portion has also been deleted
from the design without substantially altering the structural or
aesthetic features of the frame member.
As will be apparent to persons skilled in the art, various
modifications, adaptations and variations of the foregoing specific
disclosure can be made without departing from the teachings of the
present invention.
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