|Publication number||US3512313 A|
|Publication date||May 19, 1970|
|Filing date||Oct 14, 1968|
|Priority date||Oct 14, 1968|
|Publication number||US 3512313 A, US 3512313A, US-A-3512313, US3512313 A, US3512313A|
|Inventors||Harz Richard E|
|Original Assignee||Owens Corning Fiberglass Corp|
|Export Citation||BiBTeX, EndNote, RefMan|
|Patent Citations (5), Referenced by (20), Classifications (8), Legal Events (2)|
|External Links: USPTO, USPTO Assignment, Espacenet|
May 19, 1970 R. E. HARZ ACOUSTIC cmmm 3 SheetS Sheet 1 Filed Oct. 14. 1968 INVENTOR. RICHARD E. HARZ Pvnbxaue s If-"2; E, H ARZ AcousTIc CEILING May 19,1970 1 1 3 Sheet s-Sheet 2 Filed' 00 14, 11968 INVENTOR. RICHARD E. HARZ FIG. :5
'M 19,197o gig: 3,512,31
- v ACOUSTIC CEILING v Filed Oct. 14, 1968 3 Sheets-Sheet s INVENTOR. RICHARD E. HARZ FIG.6 Z, 22
ATFOEU 12x15 United States Patent U.S. Cl. 52-28 9 Claims ABSTRACT OF THE DISCLOSURE A suspended ceiling support system for supporting acoustical ceiling panels and lighting fixtures wherein the lighting fixtures are disposed within a trough formed by angularly disposed and supported ceiling panels of the system.
BACKGROUND OF THE INVENTION Heretofore, it has "been common practice in producing an acoustical ceiling system to suspend acoustic panels from an existing ceiling or joist structure so that all of the acoustic panels lie in the same generally horizontal plane spaced from and generally parallel to the existing ceiling or the joist structure. With this type of construction, a substantial portion of the area of the ceiling is lost insofar as the use of the acoustical panels are concerned, since certain areas of the ceiling are occupied by lighting and ventilating fixtures.
One of the solutions to the problem has been to form the acoustical panels of translucent material and to mount the lighting fixtures between the acoustic panels and the main ceiling. With such a structure, the maintenance of the lighting means was difiicult since they were not directly accessible from the floor of the room.
The above problem was solved by a system illustrated and described in US. Pat. No. 3,321,877 entitled Acoustic Ceiling, S. T. Alexieff, issued May 30, 1967, wherein a plurality of individually removable acoustic panels is arranged at an angle to the plane passing through the lower portion of the acoustic panels to form a downwardly opening space of increasing cross-sectional area between the acoustic panels to provide increased acoustic panel area and resultant increased sound energy absorption. Also, the recessed space into which the lighting fixtures were placed provides for easy access from the floor of a room, and the adjacent panels serve as reflectors to increase the uniformity of the light distribution, the amount of illumination, the efiiciency of illumination, and substantially eliminates the objectionable direct glare.
The present invention, while embodying all of the advantages of the prior systems, provides an acoustic ceiling wherein the acoustic panels are supported by means which are not observable from below the panels, and thereby presents to the viewer a substantially monoacoustic ceiling system. Further, the suspension system of the present invention can be utilized with conventionaljT-support rails, with a minor addition without any considerable expense and with a minimal amount of labor.
SUMMARY Typically, the objects and advantages of the invention are achieved by a suspended ceiling system comprising a plurality of acoustic panels; support rail means disposed in parallel spaced relation to one another; means for suspending said support rail means from an overhead 3,512,313 Patented May 19, 1970 support; splay angle strips attached to facing sides of said support rail means for removably supporting the lower marginal edges of at least two of said panels; at least one cross member of inverted U-shape configuration bridging the space between the support rail means and having the terminal ends thereof fixedly secured to respective ones of the support rail means; means for suspending the cross member from an overhead support; a lighting fixture; and means for attaching the lighting fixture to the cross member intermediate the terminal ends thereof and having angularly depending support means cooperating with the splay angle strips for removably supporting the upper marginal edges of the panels whereby the panels are adapted to be supported beneath the cross member in such a fashion that the distance between the lower marginal edges of the panels is greater than the distance between the upper marginal edges of the panels. BRIEF DESCRIPTION OF THE DRAWINGS The above, as well as other objects and advantages of the invention, will become readily apparent to those skilled in the art from reading the following detailed description of an embodiment of the invention when considered in the light of the accompanying drawings, in which:
FIG. 1 is a fragmentary perspective view of a ceiling system employing the features of the invention;
FIG. 2 is a fragmentary perspective view of the support system for the ceiling illustrated in FIG. 1;
FIG. 3 is an enlarged fragmentary view of the attachment means for the support rail member, the splay angle strip, and the associated cross member which cooperate to support the bottom of the angularly disposed acoustic panel;
FIG. 4 is an exploded view of a portion of the ceiling suspension system illustrated in FIG. 1, showing a typical lighting fixture for use in the system;
FIG. 5 is a sectional view of the ceiling illustrated in FIG. 1, taken along line 55 thereof; and
FIG. 6 is an enlarged fragmentary view of a modification of the structure illustrated in FIG. 3.
DESCRIPTION OF THE PREFERRED EMBODIMENT Referring to FIGS. 1 to 5 of the drawings, there is illustrated an acoustic ceiling system suspended in spaced relation from an existing ceiling 10 of a building structure by any well known means such as, for example, wires 12. The ceiling system includes at least one pair of spaced apart longitudinal rail members 14 and 16; and transverse rail members 18. The rail members 14, 16, and 18 are typically generally of inverted T-shaped cross-sectional configuration, and often referred to as T members. The rail members each have an upstanding web portion 20 with a bead 22 formed along the upper marginal edge thereof, and oppositely extending ledge portions 24 and 26 at the opposite lower marginal edge. The rail members are suspended in a grid arrangement, as generally illustrated in FIG. 1, from the overhead anchorage such as the ceiling 10 by hanger wires 28 typically by loops 30 engaged in spaced openings formed in the beads 22.
Horizontally disposed acoustic ceiling panels 32 of bonded mineral fibers, for example, are suspended on the ledges 24 and 26 of the longitudinal and transverse rail members.
Bridging the space between the adjacent lengitudinal rail members 14 and 16 is a cross member 34, which is generally of inverted U-shape, having angularly upwardly extending legs 36 and 38 and a substantially horizontally disposed base section 40 joining the uppermost ends of the legs 36 and 38. Suitably secured to the base section 40 of the cross member 34 is a lighting fixture supporting bracket 42. The distal ends of the legs 36 and 38 are provided with extended surface sections 44 and 46, respectively, for attachment to the respective longitudinal rail members 14 and 16.
Prior to the cross member 34 being attached to the longitudinal rail members 14 and 16, which are conventional and may be of the type illustrated in US. Pat. 3,343,310 entitled Overhead Ceiling Structure With an Integral Fixture Assembly, N. Netz, et al., issued Sept. 26, 1967, splay angle strips 48 and 50 are suitably secured to the rail members. The strips 48 and 50 are substantially identical with one another and can satisfactorily be formed of an extruded plastic material or of suitably formed sheet metal, for example. The strips 48 and 50 are formed to have a vertically extending web portion 52 having spaced tabs formed therein which are adapted to fit into apertures or slots formed in the web portions 20 of the associated rail member; a horizontally extending Web portion 54 adapted to be supported by the upper surface of the ledges 24; and an angularly upwardly extending portion 56 adapted t-o support the lower marginal edge of acoustic ceiling panels, as will be explained in greater detail hereinafter. In the preferred embodiment, the vertically extending web portion 52; the horizontally extending web portion 54; and the angularly upwardly extending portion 56 are coextensive with one another.
The splay angle strips 48 and 50 may be secured to their respective longitudinal rail members 14 and 15 either at the point of manufacture or in the field before or after installation and suspension of the rail members. It will be appreciated that the splay angle strips may be easily employed with the conventional rail members to accommodate the same for use in ceiling structures of the invention in new installations, as well as existing installations which are to be modified to accommodate the new ceiling of the invention.
The distal ends 44 and 46 of the cross member 34 are attached to their respective rail members in the same fashion, and reference will only be made herein to the attachment technique of the distal end 44 and the leg 36 to the rail member 14 as illustrated in FIGS. 2 and 5. In one technique of installation, the splay angle strip 48 is positioned against the rail member 14 such a fashion that one of the apertures therein align with a similar aperture in the upstanding web portion 52, and the tab of the distal end 44 of the leg 36 of the cross member 34 is inserted into the aligned slots or apertures and bent over by any suitable tool. It will be appreciated that the terminal end of the transverse rail member 18 is adapted to be received within the aligned apertures as illustrated in FIG. 2. After the distai ends 44 and 46 of the cross member 34 are properly secured to the longitudinal rail members 14 and 16, the wires 12 are employed to cooperate with the wires 28 to adequately support the entire grid arrangement.
Next, a lighting fixture 60 is secured to the bracket 42 by wing nuts 62, as shown in FIG. 4, for example. The lighting fixture 6-9 typically contains a cover plate 64, fluorescent tube sockets 66, fluoroescent tubes 68, lens support rails 70, and a light diffusing lens 72. The cover plate 64 is aflixed to a base 74 having downwardly and outwardly angled marginal edges 76 and 78 for supporting the upper marginal edges of acoustic ceiling panels which have their lower marginal edges supported by the splay angle strips 48 and 50, respectively, as illustrated in FIG. 5.
Acoustic ceiling panels 80, similar to the horizontally disposed panels 32, are positioned in side-by-side relation in such a fashion that the lower marginal edges of one row of panels rest on, and are supported by, the splay angle member 48 mounted on the T rail member 14, and the upper marginal edges rest on the angled edges 76; and the lower marginal edges of the other of panels rest on, and are supported by, the splay angle member 50 mounted on the T rail member 16, and the upper marginal edges rest on the angled edges 78. With such disposition, the angularly disposed ceiling panels 80 form a trough at the apex of which is disposed a series of lighting fixtures 60. The exposed surfaces of the ceiling panels 80 are typically faced with an aesthetic light reflecting materiai such as paint, vinyl sheeting, or the like, which provides an increased light reflecting surface to improve the overall lighting efliciency of the ceiling system.
FIG. 6 shows another embodiment of the means for attaching the distal end of 44 of the leg 36' of a cross member and a splay angle strip 48' to a longitudinally extending rail member 14', wherein the members are fastened together by a pair of spaced apart threaded fasteners 82.
It will be appreciated from considering the above description and the accompanying drawings that the invention provides a suspended ceiling system which may be economically manufactured and readily installed with means for upwardly mounting equipment such as lighting fixtures, which are readily accessible for maintenance, wherein no vertically extending support means for the ceiling panels is visible to the viewer, and use may be readily made of conventional T rail members, which may be adapted for the ceiling system of the invention.
1. In a suspended ceiling system comprising:
a plurality of acoustic ceiling panels;
support rail means disposed in parallel spaced relation to one another;
means suspending said support rail means from an overhead support;
spiay angle strips attached to facing sides of said support rail means removably supporting the lower marginal edges of at least two of said panels;
at least one cross member bridging the space between said support rail means and having terminal ends thereof secured to respective ones of said support rail means;
a lighting fixture; and
means attaching said lighting fixture to said cross member intermediate the terminal ends thereof and in dependent relation thereto, said fixture having angularly depending support means in alignment with portions of said splay angle strips removably supporting the upper marginal edges of said panels whereby said panels are supported beneath said cross member, the distance between the lower marginal edges of said panels being greater than the distance between the upper marginal edges of said panels.
2. The invention defined in claim 1 wherein said cross member is in the shape of -a yoke.
3. The invention defined in claim 1 wherein said cross member is of inverted U-shape configuration.
4. The invention defined in claim 1 including means for suspending said cross member from an overhead support.
5. The invention defined in claim 1 wherein said support rail means comprises at least a pair of elongate members having an upstanding Web portion and oppositely extending ledge portions for supporting said marginal edges of said ceiling panels.
6. The invention defined in claim 5 wherein the web portion of said support rail means is provided with a plurality of spaced apertures.
7. The invention defined in claim 6 wherein the terminal ends of said cross members are provided with fastening means cooperating with the apertures of the Web portion of said support rail means for securing the terminal ends of said cross member to respective ones of said elongate members.
8. The invention defined in claim 6 wherein the fastening means comprises horizontally extending tabs at spaced intervals corresponding to the spaced apertures of the Web portion of said support rail means.
9. The invention defined in claim 1 wherein said angularly depending support means for removably supporting the upper marginal edges of said panels is disposed at an angle complementary to the angle of said splay angle strips.
References Cited UNITED STATES PATENTS HENRY C. SUTHERLAND, Primary Examiner S. D. BURKE, Assistant Examiner US. Cl. X.R.
|Cited Patent||Filing date||Publication date||Applicant||Title|
|US3321877 *||Feb 24, 1964||May 30, 1967||Armstrong Cork Co||Acoustic ceiling|
|US3343309 *||Jun 8, 1965||Sep 26, 1967||Integrated Systems Inc||Coved ceiling assembly and bracket means therefor|
|US3343310 *||Nov 16, 1964||Sep 26, 1967||Integrated Systems Inc||Overhead ceiling structure with an integral fixture assembly|
|US3352071 *||Mar 8, 1965||Nov 14, 1967||Lock Products Co||Fixture for use in a suspended grid ceiling system|
|US3415018 *||Oct 5, 1967||Dec 10, 1968||Lok Products Co||Grid supported ceiling lighting fixture|
|Citing Patent||Filing date||Publication date||Applicant||Title|
|US3668826 *||Feb 9, 1970||Jun 13, 1972||Celotex Corp||Suspended ceiling system|
|US3675006 *||Jan 12, 1972||Jul 4, 1972||Compco Corp||Room lighting installation|
|US3780286 *||Sep 20, 1972||Dec 18, 1973||Armstrong Cork Co||Curved vault luminaire system|
|US3831019 *||Jan 23, 1973||Aug 20, 1974||Emerson Electric Co||Ceiling modules with lamp housings|
|US3995798 *||Dec 5, 1975||Dec 7, 1976||Armstrong Cork Company||Support for a vaulted ceiling module|
|US4015811 *||Dec 29, 1975||Apr 5, 1977||Armstrong Cork Company||Support for a vaulted ceiling module - II|
|US4086480 *||Sep 24, 1976||Apr 25, 1978||Donn Products, Inc.||Suspension ceiling and recessed lighting system|
|US4363082 *||Aug 26, 1980||Dec 7, 1982||Levolor Lorentzen, Inc.||Panel ceiling and light fixture|
|US4481745 *||Jan 24, 1984||Nov 13, 1984||Nemaco Trading Limited||Ceiling and coupling element for the same|
|US4625267 *||Sep 28, 1984||Nov 25, 1986||Transmatic, Incorporated||Strip lighting fixture for mass transit vehicles|
|US4860180 *||Feb 4, 1988||Aug 22, 1989||Cooper Industries, Inc.||Grid suspension system for fluorescent troffers|
|US5263290 *||Oct 21, 1991||Nov 23, 1993||Gardner Ernest A||Modular assembly for fire-safety sprinkler, heating/cooling, and lighting/communication system installations|
|US7647739 *||Jan 19, 2010||Augustus Ray Boyd||Suspended ceiling construction and retaining clip therefor|
|US7674005 *||Mar 9, 2010||Focal Point, Llc||Recessed sealed lighting fixture|
|US20060023450 *||Apr 5, 2005||Feb 2, 2006||Focal Point, Llc||Recessed sealed lighting fixture|
|US20090178358 *||Jul 16, 2009||Precision Air Products Co.||Suspended Ceiling Construction and Retaining Clip Therefor|
|US20130201690 *||Sep 19, 2011||Aug 8, 2013||Koninklijke Philips Electronics N.V.||Illumination device and luminaire|
|DE3446213A1 *||Dec 19, 1984||Jun 19, 1986||Metzger Verkaufsfoerdernde Ein||Grid ceiling|
|DE102012021582A1 *||Nov 2, 2012||May 8, 2014||HIDRIA GIF GmbH||Ventilation- and/or aeration ceiling for humid room for large-scale catering establishment, has cassettes provided with profiles, and holding profile comprising groove at lower-outer side in use position and lamp for lighting unit|
|WO1986002138A1 *||Sep 25, 1985||Apr 10, 1986||Transmatic, Incorporated||Strip lighting fixture for mass transit vehicles|
|U.S. Classification||52/28, 52/506.6, 52/144, 362/150|
|International Classification||E04B9/12, E04B9/06|
|Jul 31, 1987||AS||Assignment|
Owner name: OWENS-CORNING FIBERGLAS CORPORATION, FIBERGLAS TOW
Free format text: TERMINATION OF SECURITY AGREEMENT RECORDED NOV. 13, 1986. REEL 4652 FRAMES 351-420;ASSIGNORS:WILMINGTON TRUST COMPANY, A DE. BANKING CORPORATION;WADE, WILLIAM J. (TRUSTEES);REEL/FRAME:004903/0501
Effective date: 19870730
Free format text: TERMINATION OF SECURITY AGREEMENT RECORDED NOV. 13, 1986. REEL 4652 FRAMES 351-420;ASSIGNORS:WILMINGTON TRUST COMPANY, A DE. BANKING CORPORATION;WADE, WILLIAM J. (TRUSTEES);REEL/FRAME:4903/501
Owner name: OWENS-CORNING FIBERGLAS CORPORATION, A CORP. OF DE
|Nov 13, 1986||AS||Assignment|
Owner name: WADE, WILLIAM, J., ONE RODNEY SQUARE NORTH, WILMIN
Owner name: WILMINGTON TRUST COMPANY, ONE RODNEY SQUARE NORTH,
Free format text: SECURITY INTEREST;ASSIGNOR:OWENS-CORNING FIBERGLAS CORPORATION;REEL/FRAME:004652/0351
Effective date: 19861103
Owner name: WADE, WILLIAM, J.,DELAWARE
Free format text: SECURITY INTEREST;ASSIGNOR:OWENS-CORNING FIBERGLAS CORPORATION;REEL/FRAME:4652/351
Owner name: WILMINGTON TRUST COMPANY,DELAWARE
Owner name: WILMINGTON TRUST COMPANY, DELAWARE
Owner name: WADE, WILLIAM, J., DELAWARE