U.S. patent number 3,612,856 [Application Number 05/028,285] was granted by the patent office on 1971-10-12 for lighting fixture for a tile ceiling.
This patent grant is currently assigned to Armstrong Cork Company. Invention is credited to James E. Hazeley.
United States Patent |
3,612,856 |
Hazeley |
October 12, 1971 |
LIGHTING FIXTURE FOR A TILE CEILING
Abstract
A ceiling fixture for use with a tongue and groove joint ceiling
tile system. An adapter plate which functions as the support for
the diffuser lens and the light box is fastened to the ceiling
support system as an integral part of the ceiling tile arrangement.
The adapter plate has the necessary edge configuration to permit it
to be placed within the ceiling tile arrangement as a substitute
for one individual ceiling tile.
Inventors: |
Hazeley; James E. (Lancaster,
PA) |
Assignee: |
Armstrong Cork Company
(Lancaster, PA)
|
Family
ID: |
21842598 |
Appl.
No.: |
05/028,285 |
Filed: |
April 22, 1970 |
Related U.S. Patent Documents
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Application
Number |
Filing Date |
Patent Number |
Issue Date |
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692850 |
Dec 22, 1967 |
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Current U.S.
Class: |
362/364 |
Current CPC
Class: |
F21V
21/04 (20130101) |
Current International
Class: |
F21V
21/04 (20060101); F21V 21/02 (20060101); F21s
001/06 () |
Field of
Search: |
;240/78,78CF,78DA,78H,51.11 ;52/28 ;248/342,343,344 |
References Cited
[Referenced By]
U.S. Patent Documents
Primary Examiner: Matthews; Samuel S.
Assistant Examiner: Hayes; Monroe H.
Parent Case Text
CROSS-REFERENCE TO RELATED APPLICATION
This application is a continuation of U.S. Pat. application Ser.
No. 692,850, filed Dec. 22, 1967 now abandoned.
Claims
I claim:
1. A lighting fixture adapted to be mounted as an integral part of
an interlocking tongue and groove ceiling tile arrangement,
comprising an adapter plate with an edge configuration
corresponding to a tongue and groove ceiling tile configuration,
said edge configuration on at least one side of the adapter plate
being a flangelike means which is positioned to overlie the tongue
of an adjacent tongue and groove ceiling tile and support the
ceiling tile in position, said edge configuration on at least
another side of the adapter plate being flangelike means which does
not support the tile, but is only a means which is positioned to
overlie and conceal the groove of an adjacent tongue and groove
ceiling tile, said flange construction being larger in size than
the exposed surface area of a tongue and groove ceiling tile and
said flange being adapted to be positioned in a ceiling tile
arrangement in lieu of a ceiling tile whereby the flange
configuration must overlie adjacent ceiling tiles and the two
above-mentioned edge configurations can provide their coaction with
adjacent ceiling tiles, and a light box assembly and diffuser means
separate from and carried by the adapter plate to form the complete
light fixture, whereby the adapter plate, when positioned in place
of a ceiling tile in a tongue and groove system, performs the
normal support function of the replaced ceiling tile relative to
adjacent ceiling tiles and additionally functions as a part of a
complete lighting fixture.
Description
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a recessed lighting fixture. In
particular, the invention relates to a recessed lighting fixture
support plate which is mounted as an integral part of the ceiling
tile arrangement.
2. Description of the Prior Art
The prior art devices require either a rigid ceiling or the close
proximity of the joists for the purpose of supporting the lighting
fixture in position. Referring to U.S. Pat. No. 2,787,702, a
bracket structure which rests against the ceiling proper is used to
support the lighting fixture in position in its opening in the
ceiling. U.S. Pat. No. 3,012,135 discloses the use of a bar support
which is fastened to the joist and carries the lighting fixture box
in its position in the opening in the ceiling. In the former
structure, the ceiling must be of a sufficient rigidity to support
the lighting fixture while in the latter structure the lighting
fixture must be located first and the ceiling structure cut to fit
the location of the light.
The invention herein is particularly useful with a tongue and
groove ceiling tile arrangement wherein the individual tiles are
stapled to a supporting furring strip. The adapter plate which
supports the lighting fixture of this invention is merely inserted
into the ceiling system arrangement as a substitute for one of the
ceiling tiles. The edge structure of the adapter plate performs the
support function for adjacent tiles in a like manner to that which
the individual ceiling tiles normally perform. There is no need to
cut the individual tiles to fit around a previously located
lighting fixture. Furthermore, the support structure for the
lighting fixture is not covered over by the ceiling tiles and,
consequently, permits this particular lighting fixture to be added
to a ceiling system after it has been completely laid or permits
the lighting fixture to be removed from its opening in the ceiling
system and an individual tile inserted therein to occupy the
opening in the ceiling.
SUMMARY OF THE INVENTION
The invention is directed to a ceiling light that is integrated
within a standard ceiling tile arrangement. The feature that makes
the light different from other presently available lights is the
use of a unique mounting frame or adapter plate which fits into the
field of the ceiling tile arrangement much as does an ordinary
ceiling tile and is fastened to the furring strips in the similar
manner to that which is used to fasten the tile in position. The
mounting plate has an edge structure with interlocks with the
tongue and groove structures of the conventional tiles to provide
the interlocking support structure which the normal tongue and
groove structure is meant to perform. The adapter plate has an
opening in the center for receiving the lighting box containing the
light and has spring or wire clips around its outer edge for
supporting the diffuser lens assembly.
BRIEF DESCRIPTION OF THE DRAWING
FIG. 1 is a cross-sectional view of the lighting fixture mounted on
the ceiling; and
FIG. 2 is a perspective view partly broken away of the lighting
fixture mounted in position.
DESCRIPTION OF THE PREFERRED EMBODIMENT
In FIG. 1 the light assembly 2 is shown as being composed of a
light box 4, a diffuser lens assembly 6, and an adapter plate 8.
Within the light box 4, which is basically a four-sided structure
with one closed end, is mounted a light receptacle 10 which
receives a conventional incandescent lamp for providing
illumination. A junction box 12 is connected to the light box for
providing an area to connect the wiring. A pluralitY of the screws
14 are used as the means of fastening the light box relative to the
adapter plate. The adapter plate can first be mounted in position
minus the light box. The electrical wiring is hooked up to the
light box and then the light box is slid into the opening 18 of the
adapter plate. Screws 19 hold the adapter plate in position.
A conventional diffuser lens assembly 6 is mounted over the light
box and adapter plate. Wire clip structures 20 engage the upper
edge 21a of the diffuser lens frame 21 which holds the diffuser
lens 22 in position. Springs 23 position the lens 22 relative to
the lower edge 21b of the frame 21. The diffuser lens completely
overlies the adapter plate light box to provide a decorative
closure to the light box and also provides a diffusion of the light
emitting from the incandescent lamp.
The adapter plate 8 is that particular structural feature which
permits the light assembly to blend in with a conventional tongue
and groove ceiling tile arrangement. A conventional ceiling tile 24
is positioned on either side of the adapter plate. Referring to
FIG. 1, the ceiling tile to the right of the adapter plate is shown
with its tongue structure adjacent to the adapter plate, while the
ceiling tile to the left of the adapter plate is shown with its
groove structure adjacent to the adapter plate. Normally in
installing the ceiling tile, a staple 25 is used to fasten a
portion of the groove structure to a supporting furring strip 26.
The tongue of the next adjacent tile then slides into the groove,
and the groove with the tongue inserted therein provides support
for the adjacent tile. When the adapter plate structure is used in
lieu of a conventional ceiling tile, the staple 25 will still
continue to hold the left-hand ceiling tile in position, and the
adapter plate uses a flange 28 merely for the purpose of overlying
the groove in the ceiling tile and supplying a support for the
diffuser lens. However, the flange 30 must overlie the tongue of
the right-hand ceiling tile and provide the support that is
necessary for maintaining the ceiling tile in engagement with its
backup furring strip. Tab 32 positions the adapter plate relative
to the ceiling tiles.
Referring to FIG. 1, it can be readily seen that the adapter plate
structure in that FIG. is quite capable of being removed from or
added to a conventional ceiling system without the need of damaging
any adjacent ceiling tiles. The edge structure of the adapter plate
permits the plate to perform the normal support function of the
ceiling tile in supporting adjacent ceiling tiles. Finally, it can
be seen that the adapter plate may readily be mounted as an
integral part of a tongue and groove ceiling tile arrangement while
the ceiling system is being installed, and there is now no need for
cutting the individual tiles to suit a previously positioned
lighting assembly. Finally, the adapter plate could be made of a
size to replace a multiple number of complete ceiling tiles.
While there has been shown and described the preferred embodiment
of the invention, it will be understood that various changes may be
made in the present invention without departing from the underlying
idea or principles of the invention within the scope of the
appendant claims.
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