U.S. patent number 3,703,307 [Application Number 05/081,398] was granted by the patent office on 1972-11-21 for connector structure for suspended ceilings and the like.
This patent grant is currently assigned to Integrated Ceilings, Inc.. Invention is credited to Rolando T. Curtis.
United States Patent |
3,703,307 |
Curtis |
November 21, 1972 |
CONNECTOR STRUCTURE FOR SUSPENDED CEILINGS AND THE LIKE
Abstract
A connector structure for joining a plurality of support bars
(e. g., "T-bars") of a suspended ceiling or the like in a desired
pattern. The connector structure comprises a generally cup-shaped
connector member having an outer peripheral wall provided with a
plurality of upwardly opening slots. Connecting clips, which are
designed to engage and retain the support bars forming the grid
structure of the suspended ceiling, are inserted into the slots in
the peripheral wall. The clips are maintained in place by an inner
peripheral wall spaced radially inwardly from the outer peripheral
wall of the connector member, and by a cover member releasably
secured over the upper edge of the outer wall. Each connecting clip
is provided with a tab designed to fit through a slot in the end of
a ceiling panel support bar to join the support bar to the
connector member.
Inventors: |
Curtis; Rolando T. (Los
Angeles, CA) |
Assignee: |
Integrated Ceilings, Inc. (Los
Angeles, CA)
|
Family
ID: |
22163894 |
Appl.
No.: |
05/081,398 |
Filed: |
October 16, 1970 |
Current U.S.
Class: |
403/173;
52/506.07; 52/665 |
Current CPC
Class: |
E04B
9/14 (20130101); F16B 7/0486 (20130101); Y10T
403/344 (20150115) |
Current International
Class: |
E04B
9/06 (20060101); E04B 9/14 (20060101); F16B
7/04 (20060101); F16b 007/04 () |
Field of
Search: |
;52/495,488,669,665,660,656,639,81,80,280
;287/20,92C,92A,54A,54B,189,36H,189.36H,189.36R |
References Cited
[Referenced By]
U.S. Patent Documents
Primary Examiner: Faw, Jr.; Price C.
Claims
I claim:
1. An improved connector structure for joining a plurality of
ceiling panel support members in a desired pattern; said improved
connector structure comprising: a connector member, and means for
connecting the ends of a plurality of ceiling panel support members
to said connector member, wherein said connector member comprises a
wall member provided with a plurality of space, upwardly opening
slots, and wherein said connecting means comprise a plurality of
connecting clips releasably retained in said slots in said wall
member for securing the ends of ceiling panel support members to
said connector member; and further comprising a cover member
adapted to be placed over the upper edge of said wall member to
prevent accidental removal of said connector clips from said slots;
said cover member having a peripheral edge provided with a
plurality of circumferentially spaced notches; each of said notches
being adapted to receive an edge portion of a ceiling panel support
bar which is attached to said connector member; whereby the
engagement of the edge of the support bar with one of said notches
in said peripheral edge of said cover member will prevent rotation
of said cover member relative to said connector member.
2. An improved connector structure for joining a plurality of
ceiling panel support bars in a desired pattern, comprising:
a generally flat plate having an outer peripheral edge; an
upstanding skirt portion on said outer peripheral edge of said flat
bottom plate; said upstanding skirt portion comprising a plurality
of substantially straight segments joined end-to-end;
an upstanding cylindrical outer wall mounted on said flat bottom
plate; said outer cylindrical wall having a plurality of upwardly
opening, circumferentially spaced slots therein;
a cylindrical inner wall spaced radially inward from said outer
cylindrical wall;
a plurality of clips disposed in said slots in said outer
cylindrical wall for connecting a plurality of ceiling panel
support bars to said outer cylindrical wall; each of said clip
means comprising tab means for engaging the slotted end of a
ceiling panel support bar, bottom flange means adapted to engage
said flat bottom plate between said upstanding skirt portion and
said outer peripheral wall; and side flange means adapted to fit in
the annular space defined between said inner and outer cylindrical
walls;
a pair of mounting ears attached to said outer cylindrical wall and
extending radially outward therefrom;
each of said mounting ears including a groove and an overhanging
lip above the upper edge of said outer cylindrical wall; and
an annular cover member for covering the upper edge of said outer
cylindrical wall; said cover member including a pair of
circumferentially spaced slots adapted to receive said overhanging
lips on said mounting ears; each of said slots in said cover member
being stepped and including a step portion adapted to fit within
the groove in one of said mounting ears, under said overhanging
lip, to lock the cover member on the top of said outer cylindrical
wall; said cover member further comprising a plurality of
circumferentially spaced notches in its outer peripheral edge for
receiving the vertical end edges ceiling panel support bars to be
joined.
3. In a connector structure for joining a plurality of support
members: the combination therewith of a connector member comprising
a wall member having a plurality of spaced slots; a plurality of
connecting clips separate from said support members and received in
said slots in said wall member, said clips being affixed to the
ends of said support members to secure said support members to said
connector member; said wall member comprising an outer peripheral
member; said connector member further comprising an inner
peripheral wall member spaced inwardly from said outer peripheral
member to define a generally annular space between said wall
members receiving and confining said clips radially of said
connector member; each of said clips including oppositely directed
side flanges disposed in said annular space between said wall
members.
4. In a connector structure as defined in claim 3; said connector
member including an upstanding peripheral skirt spaced laterally
outwardly from said outer peripheral member; each of said
connecting clips further including flange means disposed between
said outer peripheral member and peripheral skirt.
5. In a connector structure for joining a plurality of support
members: the combination therewith of a connector member comprising
a wall member having a plurality of spaced slots; a plurality of
connecting clips separate from said support members and received in
said slots in said wall member, said clips being affixed to the
ends of said support members to secure said support members to said
connector member; said support members having end slots; each of
said clips including tab means extending in an end slot of a
support member for securing said support member to said connector
member.
6. In a connector structure: a plurality of ceiling panel support
members having vertical slots in their end portions; a connector
member comprising a bottom portion and a wall member extending
upwardly from said bottom portion and having a plurality of spaced
slots; a plurality of connecting clips separate from said support
members and received in said slots in said wall member; the
vertical slots of said support members receiving said clips to
affix said support members to said connector member; the ends of
said support members bearing against the periphery of said bottom
portion.
7. In a connector structure as defined in claim 6; said periphery
of said bottom portion having a plurality of straight segments; the
end of each of said support members engaging one of said straight
segments.
8. In a connector structure as defined in claim 6; said wall member
being substantially cylindrical and said plurality of spaced slots
opening upwardly through said wall member for downward positioning
of said connecting clips therein.
Description
The present invention relates generally to suspended ceiling
structures and the like. More particularly, the invention is
directed to an improved connector structure for joining the support
members (e. g., "T-bars") of suspended ceilings into an infinite
variety of designs.
In recent years, suspended ceiling structures have become
increasingly popular. A suspended ceiling structure typically
comprises a network or grid of support bars joined to one another
to form a plurality of rectangular openings. Rectangular ceiling
panels are held in the openings by the support bars.
A support bar is typically shaped in the form of an inverted "T,"
in cross-section, with the horizontal arms of the inverted "T"
engaging and supporting the edges of the ceiling panels. Other
support bars are shaped like an "I" or an "H" in cross section. The
support bars are connected to one another to form the rectangular
openings by inserting a tab on one end of each bar into a vertical
slot in an adjacent bar, and bending the tab to secure the two bars
together.
Suspended ceiling structures of the type described above are shown,
for example, in U. S. Pats. Nos. 3,303,338; 3,336,471 and
3,378,980, all of which are assigned to the assignee of the present
invention.
Heretofore, it has been extremely difficult to assemble the grid
structures for suspended ceilings in non-rectangular or non-planar
configurations. Where a non-planar or non-rectangular network has
been desired, it has been necessary to custom fabricate the support
bars in the shop (i. e., by cutting and joining the bars to form
acute or obtuse angles), and transport the finished grid structures
to the job site. Of course, the required custom fabrication in the
shop, rather than on the job site, has severely limited the sizes
and shapes of the grids to those which could be readily transported
to the job site.
The improved connector structure of the present invention
facilitates on-the-job construction of a variety of complex grid
designs by ordinary laymen having no special skills. The improved
structure comprises a novel connector member to which a plurality
of ceiling panel support bars are connected to form a desired
pattern, rectangular or non-rectangular, planar or non-planar (e.
g., hemispherical, pyramidical, etc.).
Other advantages of the connector structure of the present
invention will become apparent from a consideration of the
following description of a preferred embodiment. This embodiment is
shown in the drawings which accompany and form part of the present
specification. It is to be understood that the preferred embodiment
is shown and described only for the purpose of illustrating the
general principles of the invention. Numerous modifications and
variations may be made to the preferred embodiment without
departing from the spirit and scope of the invention.
In the drawings:
FIG. 1 is an exploded isometric view illustrating the improved
connector structure of the present invention and the manner in
which the connector is employed to join a plurality of
"T-bars."
FIG. 2 is a top plan view of the improved connector structure of
the present invention.
FIG. 3 is a sectional elevation view taken along the line 3 -- 3 of
FIG. 2.
FIG. 4 is an enlarged top plan view of the connector structure
shown in FIG. 2, with portions of the cover member broken away to
reveal portions of the interior of the connector.
FIG. 5 is a side elevation view, similar to FIG. 3, illustrating
the manner in which the connector structure of the present
invention may be employed to form a non-planar network of ceiling
panel support bars.
FIG. 6 is a top plan view of pyramid-shaped grid configuration
which may be assembled using the improved connector structure of
the present invention.
FIG. 7 is a sectional side elevation view of the pyramid-shaped
grid design shown in FIG. 6, taken along the line 7 -- 7 of FIG.
6.
FIG. 8 is a top plan view of a generally hemispherical dome shaped
grid structure which may be assembled using the improved connector
structure of the present invention.
FIG. 9 is a sectional side elevation view of the dome-shaped grid
design shown in FIG. 8, taken along the line 9 -- 9 of FIG. 8.
FIG. 10 is a sectional side elevation view of yet another complex
grid design which may be assembled using the improved connector
structure of the present invention, wherein a series of erect and
inverted pyramid sections are interconnected.
Referring now to the drawings, and particularly to FIGS. 1 - 5
thereof, the improved connector structure of the present invention
is seen to comprise a connector member 20, a detachable cover plate
22 for the connector member, and a plurality of connecting clips 24
adapted to secure a plurality of T-bar type support members 26 to
the connector member. It will be noted that each T-bar 26 has an
inverted "T" shape, in cross section. The horizontal arms of the
inverted "T" serve as ledges for supporting the edges of ceiling
panels (not shown).
As best shown in FIG. 1, the connector member 20 comprises a bottom
plate 28 having an upstanding outer peripheral wall 30 mounted
thereon. Also upstanding from the bottom plate 28 is an inner
peripheral wall 32 which is spaced radially inwardly from the outer
wall 30. The bottom plate is octagonal, and has an upstanding skirt
portion 33 formed on its peripheral edge.
The outer peripheral wall 30 is provided with a plurality of
circumferentially spaced, upwardly opening, substantially vertical
slots 34 for receiving the connecting clips 24.
A pair of mounting ears 36, 36 are provided on opposite sides of
the outer wall 30 for securing the connector member 20 to two T-bar
support members 26', 26' to which the connector member is to be
joined. Each of the mounting ears 36 is provided with a plurality
of holes 38 for receiving bolts 40 or other suitable fasteners (e.
g., rivets or screws) for attaching the ear to one of the T-bars
26'. Each mounting ear is also provided with a groove 42 defining
an overhanging lip 44 for retaining the cover member 22 over the
top of the connector member 20, in a manner described in detail
below.
Each of the connector clips 24 includes two metal pieces welded or
otherwise suitably joined face-to-face, as shown at 48, 48 in FIG.
1. The clip 24 includes a central body portion 50, a tab 52 which
is bent to form a right angle with the body portion, a pair of
outwardly extending bottom flanges 54, 54 connected to the body
portion 50 for engaging the bottom plate 28 of the connector member
20 between the outer peripheral wall 30 and the upstanding skirt
portion 33, and a pair of outwardly extending side flanges 56, 56
connected to the body portion and adapted to be received in the
annular space 58 formed between the inner and outer peripheral
walls 30 and 32 (see FIG. 4).
The annular cover member or lock ring 22 is adapted to be
detachably secured over the upper edge of the outer peripheral wall
30 of the connector member 20 to lock the connector clips 24 in the
slots 34. As best shown in FIG. 1, the cover member 22 is provided
with diametrically opposed, stepped slots 59 in its outer
peripheral edge. The longer portions of the slots 59 are adapted to
align with and receive the overhanging lips 44 on the mounting ears
36 when the cover is placed on top of the outer wall 30. When the
cover is thereafter rotated in a clockwise direction (as viewed in
FIGS. 1, 2 and 4), the step portion 61 of each slot 59 will enter
the groove 42 and lock the cover in place beneath the lip 44.
The inner peripheral edge 60 of the cover member 22 is provided
with a pair of downwardly struck segments 62, 62 which engage the
upper interior edge of the outer peripheral wall 30 to prevent the
cover member from sliding on the upper edge of the peripheral wall
when the cover member is locked beneath the lips 44, 44 (see FIG.
3).
It will be noted that the improved connector structure illustrated
in the drawings is particularly designed to receive up to eight
T-bars. Each of the eight sides of the skirt 33 on the bottom plate
28 is adapted to engage the lower horizontal edge 66 of one of the
T-bars to be joined. Since two T-bars 26', 26' are bolted to the
mounting ears 36, 36 on the connector member, only six
clip-receiving slots 34 need be provided. Each clip-receiving slot
34 is aligned with the approximate middle of one of the eight sides
of the octagonal skirt 33. Each of the mounting ears 36 is also
aligned with the middle of one side of the skirt 33.
The outer peripheral edge of the cover member 22 is further
provided with a plurality of circumferentially spaced notches 70,
each of which aligns with one of the clip-receiving slots 34 when
the cover member is in place. These notches 70 receive the upper
portions of the vertical edges 72 of the T-bars to be joined.
To assemble a T-bar grid using the improved connector structure of
the present invention, the connector member 20 is first bolted or
otherwise suitably attached to two T-bars 26', 26', via the
mounting ears 36, 36.
Thereafter, a number of connecting clips 24, corresponding to the
number of other T-bars 26 to be joined to the connector member 20,
are inserted into the slots 34 in the outer peripheral wall 30 of
the connector member. As best shown in FIGS. 3, 4 and 5, the
central body portion 50 of each clip 24 extends through its
associated slot 34 to restrain lateral movement of the clip. The
bottom flanges 54, 54 of each clip engage the bottom plate 28
between the outer peripheral wall 30 and the peripheral skirt 33 on
the bottom plate to restrain downward movement and radial movement
of the clip, and the side flanges 56, 56 of each clip fit in the
annular slot 58 between the inner wall 32 and the outer wall 30 to
further restrain radial movement of the clip.
Next, the cover member 22 is positioned over the top edge of the
outer peripheral wall 30 so that the longer portions of the stepped
slots 59, 59 are aligned with and receive the overhanging lips 44,
44 of the mounting ears 36, 36. With the cover member 22 so
positioned, it is then turned clockwise (as viewed in FIGS. 1, 2
and 4) a few degrees until the step portions 61, 61 of the slots
enter the grooves 42, 42 in the mounting ears 36, 36. This will
lock the cover member 22 beneath the lips 44, 44 to prevent upward
movement of the cover member.
The T-bars 26 to be joined to the connector member 20 are then
attached to the connecting clips 24. This is accomplished by
bringing one end of each T-bar 26 adjacent a connecting clip 24,
and inserting the tab 52 on the connecting clip into the slot 74 in
the vertical web 76 of the T-bar. The tab 52 of the connecting clip
is then bent back approximately 90.degree. (see FIG. 4) to secure
the T-bar to the connector member. As best shown in FIGS. 3, 4 and
5, the lower, horizontal edge 66 of each T-bar 26 fits flush with
one side of the octagonal skirt 33 on the bottom plate 28 of the
connector member 20, and the upper portion of the vertical edge 72
of each T-bar fits into the associated notch 70 in the outer
peripheral edge of the cover member 22 to lock the cover member
against counter-clockwise rotation.
This construction assures a good, tight joint between each T-bar
and the connector member to which it is joined.
When a non-rectangular grid configuration is desired, one or more
of the T-bars 26 to be joined must be disposed at an acute or
obtuse angle relative to the segment of the peripheral skirt 33
against which the lower edge 66 of the T-bar is to engage. See, e.
g., the T-bar 26 joined to the left side of the connector member 20
in FIG. 4, which is not aligned with the center of the bottom plate
28. Accordingly, the lower, horizontal edge 66 of such a T-bar must
be cut on an angle such that the edge 66 fits flush with its
associated segment of the peripheral skirt 33 (as shown in FIG. 4).
It will further be noted that the center portion 50 of the clip 24
joining such a T-bar 26 to the connector member 20 must be bent
somewhat so that the bent-over tab portion 52 of that clip is
parallel to the vertical web 76 of the T-bar.
In a non-planar grid construction, one or more of the T-bars 26
extends at an angle relative to the horizontal bottom plate 28
(see, e. g., FIG. 5). In this case, the edge 72 of the vertical
edge of each T-bar 26 and the clip receiving slot 74 therein should
be cut at an angle such that the edge 72 and the slot 74 will be
substantially vertical when the T-bar is joined to the connector
member 20 (see FIG. 5).
Numerous non-planar and/or non-rectangular grid designs may be
assembled using the improved connector structure of the present
invention. Three of such grid designs are illustrated in FIGS. 6 -
10.
A pyramid-shaped grid structure which incorporates a plurality of
the improved connector structures of the present invention is
illustrated in FIGS. 6 and 7.
In FIGS. 8 and 9, a generally hemispherical dome design (e. g., for
a rotunda effect) is shown. Again, a plurality of the improved
connector structures of the present invention are employed.
FIG. 10 illustrates the manner in which a plurality of alternately
upright and inverted pyramid sections may be connected in
series.
Of course, countless grid designs other than those shown in the
drawings may be made employing the improved connector structure of
this invention.
The center section 80 (FIGS. 3 and 4) of the flat bottom plate 28
of the connector member may readily be removed (in the factory or
in the field) to receive a sprinkler head, a socket for an
incandescent light bulb, conduit for electrical wires entering
partitions or walls, thru-posts for partitions, or other
structures. Concentric circular grooves 82 (FIGS. 3 and 4) may be
provided in the center section 80 to facilitate cutting a hole of
desired size in the bottom plate.
The improved connector structure of the present invention may, of
course, be employed with ceiling panel support bars other than the
T-bars 26 shown in the drawings. For example, H-bars or I-bars may
be used.
From the foregoing, it will readily be appreciated that the
improved connector structure of the present invention facilitates
the assembly of relatively complex, appealing, suspended ceiling
structures by laymen or ordinary tradesmen having no special
skills. The components of the grid structure may be economically
manufactured and cut in the factory, and shipped to various job
sites where the ceiling structures can be assembled without any
cutting. Of course, grid structures incorporating the improved
connector structure of this invention may be employed in
conjunction with any type of ceiling panel (e. g., luminous,
opaque, colored, surface finished, etc.).
The preferred embodiments shown in the drawings and described above
may be modified and varied in numerous ways without departing from
the spirit and scope of the present invention. Accordingly, it is
intended that the scope of the present invention be limited only by
the appended claims.
* * * * *