US2939543A - Louvered ceiling construction - Google Patents

Louvered ceiling construction Download PDF

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US2939543A
US2939543A US677336A US67733657A US2939543A US 2939543 A US2939543 A US 2939543A US 677336 A US677336 A US 677336A US 67733657 A US67733657 A US 67733657A US 2939543 A US2939543 A US 2939543A
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plates
units
louver units
rows
members
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US677336A
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Anthony E Zingone
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Neo Ray Products Inc
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Neo Ray Products Inc
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    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B9/00—Ceilings; Construction of ceilings, e.g. false ceilings; Ceiling construction with regard to insulation
    • E04B9/34—Grid-like or open-work ceilings, e.g. lattice type box-like modules, acoustic baffles
    • E04B9/345—Grid-like or open-work ceilings, e.g. lattice type box-like modules, acoustic baffles consisting of non-parallel slats, e.g. grids
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B9/00—Ceilings; Construction of ceilings, e.g. false ceilings; Ceiling construction with regard to insulation
    • E04B9/06—Ceilings; Construction of ceilings, e.g. false ceilings; Ceiling construction with regard to insulation characterised by constructional features of the supporting construction, e.g. cross section or material of framework members
    • E04B9/064—Ceilings; Construction of ceilings, e.g. false ceilings; Ceiling construction with regard to insulation characterised by constructional features of the supporting construction, e.g. cross section or material of framework members comprising extruded supporting beams
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B9/00—Ceilings; Construction of ceilings, e.g. false ceilings; Ceiling construction with regard to insulation
    • E04B9/18—Means for suspending the supporting construction
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B9/00—Ceilings; Construction of ceilings, e.g. false ceilings; Ceiling construction with regard to insulation
    • E04B9/32—Translucent ceilings, i.e. permitting both the transmission and diffusion of light

Definitions

  • This invention relates to a louvered ceiling construction.
  • An object of the invention is to provide a louvered vceiling constructionV which presents an unbroken louvered connect the louver units at each side for facilitating the cleaning of the units and for gaining access to the illuminating mounting means and lamps.
  • Still another object of the invention isto provide panelp ing arranged above the louvered ceiling construction for absorbing and deadening the sound waves passing through the louver units to thereby reduce noise in the room below the louvered construction.
  • Stillv another object of the invention is to provide an improved louvered ceiling construction composed of parts which may be prefabricated so as to facilitate the erection and installation thereof.
  • Fig. 1 is a perspective view of a fragmentary position of a louveredrceiling construction embodying the invention.
  • FIG. 2 is an enlarged fragmentary sectional view taken approximately on line 2-2 of Fig. l.
  • Fig. 3' is a sectional view taken approximately on line 3-3 of Fig. 2.
  • Fig. 4 isan enlarged fragmentary sectional view of the louver units supporting construction.
  • Fig.5 is a fragmentary perspective view of the lower end of one of the side walls of the upright members.
  • Fig. 6 is an enlarged sectional view taken approximately on-line 6-7-6fofFig. 2.
  • vthe-.louvered ceiling construction provides an unbroken louvered pattern extending throughout the entire area below a ceiling.
  • the louvered construction includes louver units 10 arranged in parallel rows with the louvers in each row being disposed in aligned relation.
  • the units are constructed and arranged so that the same may be prefabricated to facilitate the .installation thereof.
  • Each of the units 10 consists of a plurality of vertically disposed longitudinally extending rows of transversely spaced plates 11 which are interiitted with a plurality of vertically disposed, trans- 2,939,543 ⁇ Patented June 7, 1960 plates 11 are formed with longitudinally spaced slots 14,
  • the transversely extending plates 12 are provided With longitudinally spaced slots 15, which open through the upper edges thereof and extend inwardly to approximately the centers of said plates respectively.
  • the longitudinally and transversely extending plates are interitted to dispose the slots 14 in engagement with the portions of the transverse extending plates below the slots 15 and the slots 15 in the transverse extending plates are in engagement with the portions of the longitudinally extending plates 11 above the slots 14 therein.
  • the plates are secured together at their intersections and thereby connect all the plates together in unit formation.
  • the louver units 10 are supported below theceiling of a room by means of structural framework 17 so as to provide a space above the units for illuminating means d8.
  • the -said framework includes a plurality of spaced parallel channel members 21 which extend transversely from one side of the room to the other and are suspended in spaced relation from thel ceiling by hanger rods 22 depending from brackets 23 affixed to the ceiling with the lower ends of the hanger rods engaging through apertures in the opposite sides of U-shaped clips 24.
  • the clips engage about the channel members with the protruding ends of the hanger rods engaged by wing nuts 25 for adjusting the elevation of the channel members.
  • Supported by each of the channel members 21 at longitudinally spaced locations are upright members 26.
  • Each of the upright members 26 is formed of a strip of flat sheet metal which is bent to provide an end wall 27 and oppositely disposed side walls 28 having outwardly directed hooked lower ends 29.
  • I'he upright members are arranged in rows on the channel members 21 with the lower hooked ends thereof located above confronting sides of adjacent rows of louver units 10.
  • Supported on the hooked lower ends of each row of the channel members are mating plates 30 and 31, which extend longitudinally between adjacent rows of louver units 10 and against which the ends of the plates 12 of the louver units abut.
  • the plates 30 and 31 are for-med with back to backv planar lower portions 34 and with diverging upper portions 35 which are provided with inwardly directed hooked terminals 36.
  • the terminals 36 engage the hooked terminals 29 to thereby support the plates 30 and 31 in depending relation on the upright members 26.
  • the plates 30 and 3'1v are secured together and are provided with vertically disposed slots 37 located in longitudinally spaced relation for receiving the upper ends of latch members 38 connected to the endmost plate 12 of each of the louver units 10 on pivot pins 39 for supporting the rows of louver units between spaced sets of plates 30 Aand 31'; This permits of the swinging of the louver units 10 on the pivot pins 39 at either side of the units into depending relation for gaining access to the illuminating means 18 or to clean the units.
  • the units may also be readily hooked to the supporting plates 30 and 31 or released therefrom.
  • each row of upright members provides longitudinally extending spaces above the rows of louver units with the illuminating means 18 3 extending longitudinally of and medially above the rows respectively.
  • the paneling 42 is made of Fiberglas enclosed in white plastic envelopes 43 and provides acoustical noise batlles, which reduce the noises passing through the louver units.
  • the side walls 28 of the upright members 26 have outstruck tongues '45 which are cut from the body thereof and bent outwardly into overlying relation with the hooked terminals 36 to thereby retain the plates 30 and 31 in sup ported relation on the upright members 26,
  • the illuminating means 18 may be of any preferred type and as illustrated the same consists of fluorescent lamps 46 supported by and depending from housings 47 extending longitudinally of each row of louver units and supported by the channel members 21. This posi tions the lamps 46 in spaced relation above the louver units lo whereby the light rays therefrom are directed downwardly through the cells f13.
  • the framework supporb ing the louver units 11i) may extend from one side of the room to the other and from one end thereof to the other to support a plurality of rows of louver units ⁇ 10 which presents an unbroken louver pattern in all directions over the entire ceiling. Furthermore, Kall the parts of the framework and the louvers may be prefabricated and oonveniently assembled and erected.
  • each of said louver units Consisting of vertically disposed longitudinally and transversely arranged rows of intersected plates providing longitudinally and transversely disposed rows of cells opening through the top and bottom of the unit, means for supporting said rows of louver units below lthe ceiling of a room consisting of spaced parallel upper frame members, hanger bars aiiixed to the ceiling and to said upper frame members, a plurality of upright members arranged in rows and depending from said upper frame members, each of said upright members including spaced parallel side plates having hooked lower ends, lower frame members extending longitudinally of the parallel rows of louver units respectively, each of said lower frame members including two plates having parallel longitudinal extending lower portions disposed in side by side engagement ⁇ and having outwardly diverging longitudinally extending upper portions provided with inwardly directed hooked terminals disposed in engagement with the hooked lower ends of the said upright members, and means car
  • louvered ceiling construction parallel rows of louver units arranged with a plurality of louver units in each row disposed in aligned relation, each of said louver units consisting of vertically disposed longitudinally and transversely arranged rows of intersected plates providing longitudinally and tranversely disposed rows of cells opening through the top and bottom of the unit, means for supporting said rows of louver units below the ceiling of a room consisting of spaced parallel upper frame members, hanger bars afixed to the ceiling and to said frame members, a plurality of upright members arranged in rows and depending from said frame members, each of said upright members including spaced parallel side plates having hooked lower ends, lower frame members extending longitudinally of the parallel rows of louver units re spectively and having hooked upper ends engaging the hooked lower ends of said upright members, means carried by said louver units engaging said lower frame members for supporting said louver units in planar relation, and paneling extending between the side plates of each row of upright members and supported upon the lower frame members to thereby subdivide the space above the louve
  • each of said louver units consisting of intersecting plates providing rows of cells opening through the top and bottom of the unit, means for supporting said rows of louver units below the ceiling of a room including spaced parallel upper frame members, means aixed to the ceiling and to said frame members, for supporting the same, a plurality of upright members arranged in rows and secured to said frame members in depending relation, each of said upright members including spaced parallel side plates, lower frame members extending longitudinally of the parallel rows of louver units respectively and each having diverging upper side portions axed to the lower ends of the side plates of the upright members, means carried by said louver units engaging said lower frame members for supporting said louver units in planar relation, and paneling extending between the side plates of each row of upright members and supported upon the divergiug side portions of said lower frame members to thereby subdivide the space above the louver units, and said paneling

Description

June 7, 1960 A. E. ZINGONE LOUVERED CEILING CONSTRUCTION Filed Aug. 9. 1957 N N M NN w w W 2 Sheets-Sheet l June 7, 1960 A. E; zlNGoNE LouvERED CEILINC CONSTRUCTION Filed Aug. 9, 1957 2 Sheets-Sheet 2 BY M, W
United StatesPatent O F LOUVERED CEILING CONSTRUCTIGN Anthony E. Zingone, Massapequa, N.Y., assignor to Neo- Ray Products, Inc., New York, N.Y., a corporation of t New York Filed Aug. 9, 1957, Ser. No. 677,336
3 Claims. (Cl. 181-33) This invention relates to a louvered ceiling construction. An object of the invention is to provide a louvered vceiling constructionV which presents an unbroken louvered connect the louver units at each side for facilitating the cleaning of the units and for gaining access to the illuminating mounting means and lamps.
Still another object of the invention isto provide panelp ing arranged above the louvered ceiling construction for absorbing and deadening the sound waves passing through the louver units to thereby reduce noise in the room below the louvered construction.
Stillv another object of the invention is to provide an improved louvered ceiling construction composed of parts which may be prefabricated so as to facilitate the erection and installation thereof.
With the foregoing and other objects in view, reference is now made to the following speciiications and accompanying drawings in which the preferred embodiment of the invention is illustrated.
-In the drawings:
Fig. 1 is a perspective view of a fragmentary position of a louveredrceiling construction embodying the invention.
Fig; 2 is an enlarged fragmentary sectional view taken approximately on line 2-2 of Fig. l.
Fig. 3' is a sectional view taken approximately on line 3-3 of Fig. 2.
Fig. 4 isan enlarged fragmentary sectional view of the louver units supporting construction.
Fig.5 is a fragmentary perspective view of the lower end of one of the side walls of the upright members.
Fig. 6 is an enlarged sectional view taken approximately on-line 6-7-6fofFig. 2. j l
vRef'erring to the drawings, vthe-.louvered ceiling construction provides an unbroken louvered pattern extending throughout the entire area below a ceiling. The louvered construction includes louver units 10 arranged in parallel rows with the louvers in each row being disposed in aligned relation. The units are constructed and arranged so that the same may be prefabricated to facilitate the .installation thereof. Each of the units 10 consists of a plurality of vertically disposed longitudinally extending rows of transversely spaced plates 11 which are interiitted with a plurality of vertically disposed, trans- 2,939,543 `Patented June 7, 1960 plates 11 are formed with longitudinally spaced slots 14,
which open through the lower edges thereof and extend inwardly to approximately the centers of the plates respectively. The transversely extending plates 12 are provided With longitudinally spaced slots 15, which open through the upper edges thereof and extend inwardly to approximately the centers of said plates respectively. The longitudinally and transversely extending plates are interitted to dispose the slots 14 in engagement with the portions of the transverse extending plates below the slots 15 and the slots 15 in the transverse extending plates are in engagement with the portions of the longitudinally extending plates 11 above the slots 14 therein. The plates are secured together at their intersections and thereby connect all the plates together in unit formation.
The louver units 10 are supported below theceiling of a room by means of structural framework 17 so as to provide a space above the units for illuminating means d8. The -said framework includes a plurality of spaced parallel channel members 21 which extend transversely from one side of the room to the other and are suspended in spaced relation from thel ceiling by hanger rods 22 depending from brackets 23 affixed to the ceiling with the lower ends of the hanger rods engaging through apertures in the opposite sides of U-shaped clips 24. The clips engage about the channel members with the protruding ends of the hanger rods engaged by wing nuts 25 for adjusting the elevation of the channel members. Supported by each of the channel members 21 at longitudinally spaced locations are upright members 26. Each of the upright members 26 is formed of a strip of flat sheet metal which is bent to provide an end wall 27 and oppositely disposed side walls 28 having outwardly directed hooked lower ends 29. I'he upright members are arranged in rows on the channel members 21 with the lower hooked ends thereof located above confronting sides of adjacent rows of louver units 10. Supported on the hooked lower ends of each row of the channel members are mating plates 30 and 31, which extend longitudinally between adjacent rows of louver units 10 and against which the ends of the plates 12 of the louver units abut.
The upright members 26 are aixed to the channel shaped members 21 by means of bolts 32 which extend through the end =walls -27 of said upright ymembers and through apertures in opposite sides of U-shaped clips 33 engaging about the channel shaped members. The plates 30 and 31 are for-med with back to backv planar lower portions 34 and with diverging upper portions 35 which are provided with inwardly directed hooked terminals 36. The terminals 36 engage the hooked terminals 29 to thereby support the plates 30 and 31 in depending relation on the upright members 26. The plates 30 and 3'1v are secured together and are provided with vertically disposed slots 37 located in longitudinally spaced relation for receiving the upper ends of latch members 38 connected to the endmost plate 12 of each of the louver units 10 on pivot pins 39 for supporting the rows of louver units between spaced sets of plates 30 Aand 31'; This permits of the swinging of the louver units 10 on the pivot pins 39 at either side of the units into depending relation for gaining access to the illuminating means 18 or to clean the units. The units may also be readily hooked to the supporting plates 30 and 31 or released therefrom.
'Ihe upright members 26, together with the plates 30 and 31, constitute a support for paneling 42, which extends between the side walls 28 of each row thereof, with the lower end of the paneling supported upon the diverging portions 35 of the said plates 30 and 31. The paneling being supported, as aforesaid, by each row of upright members provides longitudinally extending spaces above the rows of louver units with the illuminating means 18 3 extending longitudinally of and medially above the rows respectively. The paneling 42 is made of Fiberglas enclosed in white plastic envelopes 43 and provides acoustical noise batlles, which reduce the noises passing through the louver units. This is effected by the sound waves striking the surface of the paneling or baffles being transmitted by diaphragmatic action of the plastic envelopes to the Fiberglas, whereby most of the energy of the sound waves is absorbed. The plastic envelope permits of the washing or the surfaces of the paneling for removing dust which may accumulate thereon.
The side walls 28 of the upright members 26 have outstruck tongues '45 which are cut from the body thereof and bent outwardly into overlying relation with the hooked terminals 36 to thereby retain the plates 30 and 31 in sup ported relation on the upright members 26,
The illuminating means 18 may be of any preferred type and as illustrated the same consists of fluorescent lamps 46 supported by and depending from housings 47 extending longitudinally of each row of louver units and supported by the channel members 21. This posi tions the lamps 46 in spaced relation above the louver units lo whereby the light rays therefrom are directed downwardly through the cells f13.
It would be understood that the framework supporb ing the louver units 11i) may extend from one side of the room to the other and from one end thereof to the other to support a plurality of rows of louver units `10 which presents an unbroken louver pattern in all directions over the entire ceiling. Furthermore, Kall the parts of the framework and the louvers may be prefabricated and oonveniently assembled and erected.
While the preferred form of invention is shown and described herein, it is understood that the same is not so limited but shall cover and include any and all moditications of the invention which fall within the purview of the claims.
What is claimed is:
l. In a louvered ceiling construction, parallel rows of louver units arranged with a plurality of louver units in each row disposed in aligned relation, each of said louver units Consisting of vertically disposed longitudinally and transversely arranged rows of intersected plates providing longitudinally and transversely disposed rows of cells opening through the top and bottom of the unit, means for supporting said rows of louver units below lthe ceiling of a room consisting of spaced parallel upper frame members, hanger bars aiiixed to the ceiling and to said upper frame members, a plurality of upright members arranged in rows and depending from said upper frame members, each of said upright members including spaced parallel side plates having hooked lower ends, lower frame members extending longitudinally of the parallel rows of louver units respectively, each of said lower frame members including two plates having parallel longitudinal extending lower portions disposed in side by side engagement `and having outwardly diverging longitudinally extending upper portions provided with inwardly directed hooked terminals disposed in engagement with the hooked lower ends of the said upright members, and means car ried by said louver units engaging said lower frame members for supporting said louver units in planar relation.
2. In a louvered ceiling construction, parallel rows of louver units arranged with a plurality of louver units in each row disposed in aligned relation, each of said louver units consisting of vertically disposed longitudinally and transversely arranged rows of intersected plates providing longitudinally and tranversely disposed rows of cells opening through the top and bottom of the unit, means for supporting said rows of louver units below the ceiling of a room consisting of spaced parallel upper frame members, hanger bars afixed to the ceiling and to said frame members, a plurality of upright members arranged in rows and depending from said frame members, each of said upright members including spaced parallel side plates having hooked lower ends, lower frame members extending longitudinally of the parallel rows of louver units re spectively and having hooked upper ends engaging the hooked lower ends of said upright members, means carried by said louver units engaging said lower frame members for supporting said louver units in planar relation, and paneling extending between the side plates of each row of upright members and supported upon the lower frame members to thereby subdivide the space above the louvered ceiling construction, and said paneling providing acoustical noise baies for deadening the sound waves passing through the louver units to reduce noise in the room below the louvered ceiling construction.
3. In a louvered ceiling construction, parallel rows of louver units arranged with a plurality of louver units contained in each row and disposed in yaligned relation, each of said louver units consisting of intersecting plates providing rows of cells opening through the top and bottom of the unit, means for supporting said rows of louver units below the ceiling of a room including spaced parallel upper frame members, means aixed to the ceiling and to said frame members, for supporting the same, a plurality of upright members arranged in rows and secured to said frame members in depending relation, each of said upright members including spaced parallel side plates, lower frame members extending longitudinally of the parallel rows of louver units respectively and each having diverging upper side portions axed to the lower ends of the side plates of the upright members, means carried by said louver units engaging said lower frame members for supporting said louver units in planar relation, and paneling extending between the side plates of each row of upright members and supported upon the divergiug side portions of said lower frame members to thereby subdivide the space above the louver units, and said paneling providing acoustical noise bacles for deadening the sound waves passing through the louver units to reduce noise in the room below the louvered ceiling construction.
References Cited in the file of this patent UNITED STATES PATENTS 1,962,648 Pllueger June l2, 1934 2,646,498 Marchisio July 21, 1953 2,655,348 Siering Oct. 13, 1953 2,659,807 Wakefield Nov. 17, 1953 2,680,502 Kurtzon June 8, 1954 2,698,071 Lee Dec. 28, 1954 2,734,126 Kruger Feb. 7, 1956
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Cited By (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3030670A (en) * 1958-07-15 1962-04-24 Donald W Bigelow Ceiling construction
US3146956A (en) * 1960-05-25 1964-09-01 Robert A D Schwartz Suspended ceiling and lighting system
US3275817A (en) * 1964-08-26 1966-09-27 Robert A D Schwartz Framework structures for suspended ceiling and lighting systems
US3286426A (en) * 1962-06-08 1966-11-22 Oddvar S Halbostad Carrying devices for panel ceiling structures
US3395504A (en) * 1965-07-26 1968-08-06 Zwickert Charles Sound absorbing panels between ceilings
US3404498A (en) * 1967-03-27 1968-10-08 Florence S. Espinoza Acoustical baffling cove system
US3715578A (en) * 1971-02-10 1973-02-06 American Air Filter Co Light and filter assembly for ceiling structure
US3798446A (en) * 1972-11-24 1974-03-19 C Deaton Illuminator grid
US3969870A (en) * 1975-03-17 1976-07-20 Deaton Charles U Baffle assembly and illuminator grid
US4081931A (en) * 1975-01-11 1978-04-04 Kiyotaka Miyoshi Anti-smoke hanging wall and construction method
US4663911A (en) * 1984-05-24 1987-05-12 Andia Louvers, S.A. Device for securing profiles for concealed suspension lattice work ceilings
US4680910A (en) * 1985-09-20 1987-07-21 Perk William E Hollow-louvered ceilings
EP0494122A1 (en) * 1991-01-04 1992-07-08 Placoplatre Pivoting suspension element
US5511348A (en) * 1990-02-14 1996-04-30 Steelcase Inc. Furniture system
US5772314A (en) * 1995-09-15 1998-06-30 Brumer; Daryl J. Ceiling ornament system
US6003275A (en) * 1990-02-14 1999-12-21 Steelcase Development Inc. Furniture system
US6134844A (en) * 1990-02-14 2000-10-24 Steelcase Inc. Method and apparatus for displaying information
US6170200B1 (en) 1990-02-14 2001-01-09 Steelcase Development Inc. Furniture system
US20090307996A1 (en) * 2005-10-28 2009-12-17 Johann Berger Building Board or the Like, Its Manufacture and Use
US8839590B1 (en) * 2012-06-28 2014-09-23 FF Walls, LLC Acoustical grid and method of use
US20200018066A1 (en) * 2018-07-16 2020-01-16 Modular Arts, Inc. Ceiling tiles
US20210180320A1 (en) * 2019-12-12 2021-06-17 Oldcastle Buildingenvelope, Inc. Plenum support for demountable wall system
US20230060043A1 (en) * 2021-08-17 2023-02-23 Cuby Techmologies Inc Modular Suspended Ceiling and Method of Installation Same

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US1962648A (en) * 1931-12-28 1934-06-12 Timothy L Pflueger Ceiling and wall construction
US2646498A (en) * 1950-06-30 1953-07-21 Sylvania Electric Prod Supporting latch for lighting fixtures
US2655348A (en) * 1949-11-17 1953-10-13 Johns Manville Heat exchange and sound absorbing wall unit
US2659807A (en) * 1949-05-16 1953-11-17 F W Wakefield Brass Company Combination luminous and acoustical ceiling
US2680502A (en) * 1948-04-29 1954-06-08 Garden City Plating & Mfg Co Light diffusing unit
US2698071A (en) * 1949-11-14 1954-12-28 Cepco Inc Light control fixture
US2734126A (en) * 1956-02-07 kruger

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US2734126A (en) * 1956-02-07 kruger
US1962648A (en) * 1931-12-28 1934-06-12 Timothy L Pflueger Ceiling and wall construction
US2680502A (en) * 1948-04-29 1954-06-08 Garden City Plating & Mfg Co Light diffusing unit
US2659807A (en) * 1949-05-16 1953-11-17 F W Wakefield Brass Company Combination luminous and acoustical ceiling
US2698071A (en) * 1949-11-14 1954-12-28 Cepco Inc Light control fixture
US2655348A (en) * 1949-11-17 1953-10-13 Johns Manville Heat exchange and sound absorbing wall unit
US2646498A (en) * 1950-06-30 1953-07-21 Sylvania Electric Prod Supporting latch for lighting fixtures

Cited By (28)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3030670A (en) * 1958-07-15 1962-04-24 Donald W Bigelow Ceiling construction
US3146956A (en) * 1960-05-25 1964-09-01 Robert A D Schwartz Suspended ceiling and lighting system
US3286426A (en) * 1962-06-08 1966-11-22 Oddvar S Halbostad Carrying devices for panel ceiling structures
US3275817A (en) * 1964-08-26 1966-09-27 Robert A D Schwartz Framework structures for suspended ceiling and lighting systems
US3395504A (en) * 1965-07-26 1968-08-06 Zwickert Charles Sound absorbing panels between ceilings
US3404498A (en) * 1967-03-27 1968-10-08 Florence S. Espinoza Acoustical baffling cove system
US3715578A (en) * 1971-02-10 1973-02-06 American Air Filter Co Light and filter assembly for ceiling structure
US3798446A (en) * 1972-11-24 1974-03-19 C Deaton Illuminator grid
US4081931A (en) * 1975-01-11 1978-04-04 Kiyotaka Miyoshi Anti-smoke hanging wall and construction method
US3969870A (en) * 1975-03-17 1976-07-20 Deaton Charles U Baffle assembly and illuminator grid
US4663911A (en) * 1984-05-24 1987-05-12 Andia Louvers, S.A. Device for securing profiles for concealed suspension lattice work ceilings
US4680910A (en) * 1985-09-20 1987-07-21 Perk William E Hollow-louvered ceilings
US5511348A (en) * 1990-02-14 1996-04-30 Steelcase Inc. Furniture system
US6922949B2 (en) 1990-02-14 2005-08-02 Steelcase Development Corporation Furniture system
US5724778A (en) * 1990-02-14 1998-03-10 Steelcase Inc. Furniture system
US6003275A (en) * 1990-02-14 1999-12-21 Steelcase Development Inc. Furniture system
US6134844A (en) * 1990-02-14 2000-10-24 Steelcase Inc. Method and apparatus for displaying information
US6170200B1 (en) 1990-02-14 2001-01-09 Steelcase Development Inc. Furniture system
US6629386B1 (en) 1990-02-14 2003-10-07 Steelcase Development Corporation Furniture system
EP0494122A1 (en) * 1991-01-04 1992-07-08 Placoplatre Pivoting suspension element
FR2671361A1 (en) * 1991-01-04 1992-07-10 Placoplatre Sa ARTICULATED SUSPENSION.
US5772314A (en) * 1995-09-15 1998-06-30 Brumer; Daryl J. Ceiling ornament system
US20090307996A1 (en) * 2005-10-28 2009-12-17 Johann Berger Building Board or the Like, Its Manufacture and Use
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