US3656577A - Ceiling or flooring element of lightweight concrete - Google Patents

Ceiling or flooring element of lightweight concrete Download PDF

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Publication number
US3656577A
US3656577A US881130A US88113069A US3656577A US 3656577 A US3656577 A US 3656577A US 881130 A US881130 A US 881130A US 88113069 A US88113069 A US 88113069A US 3656577 A US3656577 A US 3656577A
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box
sound
ceiling
lightweight concrete
concrete
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US881130A
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Ingemar Larsson
Karl-Gustav Ohrn
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Ytong AG
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Intong AB
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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
    • E04B9/04—Ceilings; Construction of ceilings, e.g. false ceilings; Ceiling construction with regard to insulation comprising slabs, panels, sheets or the like
    • E04B9/045—Ceilings; Construction of ceilings, e.g. false ceilings; Ceiling construction with regard to insulation comprising slabs, panels, sheets or the like being laminated
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/62—Insulation or other protection; Elements or use of specified material therefor
    • E04B1/74—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
    • E04B1/82—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to sound only
    • E04B1/84—Sound-absorbing elements
    • E04B1/86—Sound-absorbing elements slab-shaped
    • 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
    • E04B9/001—Ceilings; Construction of ceilings, e.g. false ceilings; Ceiling construction with regard to insulation characterised by provisions for heat or sound insulation
    • 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
    • E04B9/04—Ceilings; Construction of ceilings, e.g. false ceilings; Ceiling construction with regard to insulation comprising slabs, panels, sheets or the like
    • E04B9/0457—Ceilings; Construction of ceilings, e.g. false ceilings; Ceiling construction with regard to insulation comprising slabs, panels, sheets or the like having closed internal cavities
    • 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
    • E04B9/04—Ceilings; Construction of ceilings, e.g. false ceilings; Ceiling construction with regard to insulation comprising slabs, panels, sheets or the like
    • E04B9/0464—Ceilings; Construction of ceilings, e.g. false ceilings; Ceiling construction with regard to insulation comprising slabs, panels, sheets or the like having irregularities on the faces, e.g. holes, grooves
    • 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
    • E04B9/04—Ceilings; Construction of ceilings, e.g. false ceilings; Ceiling construction with regard to insulation comprising slabs, panels, sheets or the like
    • E04B9/0478—Ceilings; Construction of ceilings, e.g. false ceilings; Ceiling construction with regard to insulation comprising slabs, panels, sheets or the like of the tray type
    • E04B9/0485—Ceilings; Construction of ceilings, e.g. false ceilings; Ceiling construction with regard to insulation comprising slabs, panels, sheets or the like of the tray type containing a filling element
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/62—Insulation or other protection; Elements or use of specified material therefor
    • E04B1/74—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
    • E04B1/82—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to sound only
    • E04B1/84—Sound-absorbing elements
    • E04B2001/8423—Tray or frame type panels or blocks, with or without acoustical filling
    • E04B2001/8433—Tray or frame type panels or blocks, with or without acoustical filling with holes in their face
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/62—Insulation or other protection; Elements or use of specified material therefor
    • E04B1/74—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
    • E04B1/82—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to sound only
    • E04B1/84—Sound-absorbing elements
    • E04B2001/8423—Tray or frame type panels or blocks, with or without acoustical filling
    • E04B2001/8442—Tray type elements
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/62—Insulation or other protection; Elements or use of specified material therefor
    • E04B1/74—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
    • E04B1/82—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to sound only
    • E04B1/84—Sound-absorbing elements
    • E04B2001/8457—Solid slabs or blocks
    • E04B2001/8461—Solid slabs or blocks layered
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/62—Insulation or other protection; Elements or use of specified material therefor
    • E04B1/74—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
    • E04B1/82—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to sound only
    • E04B1/84—Sound-absorbing elements
    • E04B2001/8457—Solid slabs or blocks
    • E04B2001/8476—Solid slabs or blocks with acoustical cavities, with or without acoustical filling
    • E04B2001/848—Solid slabs or blocks with acoustical cavities, with or without acoustical filling the cavities opening onto the face of the element
    • E04B2001/8485—Solid slabs or blocks with acoustical cavities, with or without acoustical filling the cavities opening onto the face of the element the opening being restricted, e.g. forming Helmoltz resonators

Definitions

  • the box may be fixed by 1 1 1 935 9 i 145 means of two side-pieces and two flanges put in grooves in the 2,014,749 9/1935 Smith ..52/144 l m 2,097,892 11/1937 Powell ..181/33.1 2,271,929 2/1942 Venzie ..52/145 3 Claims, 5 Drawing Figures M llillll llll 'lllli l lil lllllllll'hill] PATENTEDAPR 181912 3 656, 577
  • CEILING R FLOORING ELEMENT 0F LIGHTWEIGHT CONCRETE It is already known not only to provide floorings ceilings or walls of any material with a sound-insulating cladding, made of acoustic plates for instance, but also to give a sound-insulation to floorings or ceilings made of concrete or lightweight concrete by placing layers of some porous sound-insulating material on their undersides.
  • Such insulation according to a patent granted (Swedish Pat. No. 196 65 l l, is achieved by arranging, on the underside of the ceiling or flooring in question, a layer consisting of flexibly elastic gypsum plates nailed to a wooden framing which plates support a layer of some porous sound-absorbing material, such as mineral wool.
  • the present invention relates to a ceiling or flooring element of concrete or lightweight concrete totally eliminating the disadvantages of types earlier known within this technical field.
  • the element according to the invention has a length by many times exceeding its height and width and a width greater than its height.
  • the invention comprises an element of concrete or lightweight concrete with at least one box adjacant to one of the large surfaces of the element the box having a plane outer plate and two side-pieces for fixing the box in the two long sides of said element, the side-pieces being oriented mainly perpendicularly to said plate and further, in the space between the plane plate, the two side-pieces and the large surface of the element a layer of a porous sound-insulating material.
  • FIG. 1 is a fragmentary perspective view of three mounted elements according to the invention, the bearings of the elements having been left out for the sake of clearness.
  • FIG. 2 4 are vertical cross sections of four different embodiments of the invention.
  • FIG. 1 fragments of three lightweight concrete elements 10 are shown which on their undersides are provided with boxes 11.
  • the boxes 11 have sucha length that between their short ends and the short ends of the elements there is formed a bearing area 12 of prescribed width.
  • the elements shown on the figure are joined by tongue and groove.”
  • FIG. 2 shows a vertical cross section of one embodiment of the invention.
  • the box 13 placed on the underside of the element 10 has one plane plate 14 parallel to the underside of the element, two side-pieces l and 16 oriented perpendicularly to the plane plate, and two flanges 17 and 18.
  • the flanges 17 and 18 are intended to support the box 13.
  • To that purpose there are in both the long sides of the element thin grooves 19 and 20 milled out, the length of which shall amount at least to that of the box 13.
  • the mounting box becomes very simple. It consists in introducing the flange 17 into the groove 19, the plane plate at the same time being kept bent outwards from the underside of the element. After that, the side-piece 16 IS bent outwards from the long side of the element and is brought upwards until the flange springs into the groove 20.
  • the space 22 contains a layer 23 of some porous sound-absorbing material, such as mineral wool, woodwool or similar.
  • the thickness of the sound-absorbing layer may vary according to what demands are put on the insulating power.
  • the space 22 is totally filled by the sound-absorbing material the maximum sound-insulation thus being obtained.
  • the holes provided for letting in the sound may suitably occupy at least 10 15 percent of the surface of the plane plate.
  • FIG. 3 The elementshown in FIG. 3 is principally constructed in the same way as the previously described one. The difference is that the box has been given a profile with rounded corners instead of rectangular ones and, further, that the thickness of the sound-absorbing layer 25 is less than the distance between the underside of the element and the plane box plate 26. By placing the layer 25 at some distance from the underside of the element 10 an improved sound-insulation is obtained in relation to the alternative of letting a layer of the same thickness touch the underside of the element.
  • the element shown in FIG. 4 is provided with a box 27 the comers of which are chamfered by 45.
  • FIG. 5 finally, shows an element the box 29 of which is shaped like a U-profile without flanges.
  • the box is fixed to the element by nailing, screwing or gluing.
  • the boxes shown in the figures are firstly intented to be made from plastic laminate, slices of that material being formed to the desired profiles after heating in steam but the invention is not limited to that material.
  • the boxes may, advantageously, be made also of sheet-metal, preferably sheetaluminium or similar.
  • the invention involves many important advantages, the greatest one perhaps being the possibility of laying sound-insulating lightweight concrete floorings or ceilings without using scaffolding. Further the total costs as well of the production of the insulation as of its mounting are reduced. Last but not least, floorings and ceilings of an aesthetically appealing shape are obtained.
  • a prefabricated sound absorbing ceiling slab unit comprising a load-bearing continuous body element of lightweight concrete the length of which by many times exceeds its width and height and the width of which is greater than its height, said element having a lower, planar surface and having, along its sides, grooves and tongues for interconnecting adjacent body elements, a box located under said lower planar surface of said body element and connected to said body element, a layer of sound absorbing material resting upon the bottom of said box, the thickness of said sound absorbing layer being less than the distance between the bottom of said box and the underside of said body element, said bottom of the box having apertures permitting sound waves to penetrate said sound absorbing layer, said box having two upright side-pieces the tops of which are flanged inwardly to provide flanges the sides of said elements including slots milled out in said body element below said grooves and tongues, said flanges engaging in said slots thereby connecting said box to said body element.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Acoustics & Sound (AREA)
  • Building Environments (AREA)

Abstract

In a ceiling or flooring element of concrete or lightweight concrete the improvement of providing the underside of the element with a box containing a porous sound insulating material to secure sound insulation. The box may be fixed by means of two side-pieces and two flanges put in grooves in the element.

Description

United States Patent Larsson et a1.
[54] CEILING OR FLOORING ELEMENT OF 1151 3,656,577 1 Apr. 18, 1972 2,669,114 2/1954 Mills ..52/599 X LIGHTWEIGHT CONCRETE 2,902,854 9/1959 Greene... ..18l/33.1 3,074,505 l/1963 Schulz "52/144 X [721 Invent Ingmar Lam", Orebm; 3,324,967 6/1967 Robinson ..52/145 x Kumla bmh Sweden 3,498,405 3/1970 Charpentier ..l8l/33.1 [73] Assigneez lntong AB, Hallabrottet, Sweden FOREIGN PATENTS OR APPLICATIONS 6 [221 Med Dec 19 9 65,652 2/1969 Germany 52/145 [21] Appl. No: 881,130 1,172,610 10/1958 France ..52/599 1,027,491 4/1966 Great Britain ..52/144 [52] us. CL 1 1 33 G, 52 145 52 599 115,739 1/1946 Sweden ..52/144 [51] Int.Cl ..E04b1/86 58 Field 61 Search ..181/33.1, 33.1 1, 33; 52/599, Primary Examiner-Robert Ward,
52/144 145 Attorney-Larson, Taylor and Hmds [56] References Cited [5 ABSTRACT UNITED STATES PATENTS In a ceiling or flooring element of concrete or lightweight concrete the improvement of providing the underside of the 2,916,909 12/1959 Mlllel ..l81/33.1 figment with a box containing a porous sound insulating 1,231,348 1917 material to secure sound insulation. The box may be fixed by 1 1 1 935 9 i 145 means of two side-pieces and two flanges put in grooves in the 2,014,749 9/1935 Smith ..52/144 l m 2,097,892 11/1937 Powell ..181/33.1 2,271,929 2/1942 Venzie ..52/145 3 Claims, 5 Drawing Figures M llillll llll 'lllli l lil lllllllll'hill] PATENTEDAPR 181912 3 656, 577
Fig.2
' Fig.4
CEILING R FLOORING ELEMENT 0F LIGHTWEIGHT CONCRETE It is already known not only to provide floorings ceilings or walls of any material with a sound-insulating cladding, made of acoustic plates for instance, but also to give a sound-insulation to floorings or ceilings made of concrete or lightweight concrete by placing layers of some porous sound-insulating material on their undersides. Such insulation, according to a patent granted (Swedish Pat. No. 196 65 l l, is achieved by arranging, on the underside of the ceiling or flooring in question, a layer consisting of flexibly elastic gypsum plates nailed to a wooden framing which plates support a layer of some porous sound-absorbing material, such as mineral wool.
This type of ceiling, however, is rather costly and labourconsuming because the mounting of the components of the same requires much time and the maintaining during that time of spacious scaffolds is obstructing other working moments on the same site.
To avoid the use of scaffolding it has been proposed, alreadey in the factory to give a sound-insulation to the concrete or lightweight concrete elements intended for these ceilings and floorings. This is done by milling out grooves on the undersides of the elements and to put into these grooves porous sound-insulating strips, or foam rubber.
This type or sound-insulation, too, means some undesirable disadvantages inasmuch as the milling of grooves over the whole large surface of a concrete or lightweight concrete element requires rather a costly machinery. Besides, it is difficult to carry out the surface treatment of such concrete or lightweight concrete elements in a satisfactory way.
There is, consequently, great need for instance for a soundinsulating lightweight concrete element, possible to produce in a rational and cheap way and to mount without using building scaffolds.
The present invention relates to a ceiling or flooring element of concrete or lightweight concrete totally eliminating the disadvantages of types earlier known within this technical field. The element according to the invention has a length by many times exceeding its height and width and a width greater than its height.
The invention comprises an element of concrete or lightweight concrete with at least one box adjacant to one of the large surfaces of the element the box having a plane outer plate and two side-pieces for fixing the box in the two long sides of said element, the side-pieces being oriented mainly perpendicularly to said plate and further, in the space between the plane plate, the two side-pieces and the large surface of the element a layer of a porous sound-insulating material.
Referring now to the attached drawing a describtion will be given here below about some possible embodiments of the invention.
FIG. 1 is a fragmentary perspective view of three mounted elements according to the invention, the bearings of the elements having been left out for the sake of clearness.
FIG. 2 4 are vertical cross sections of four different embodiments of the invention.
In FIG. 1 fragments of three lightweight concrete elements 10 are shown which on their undersides are provided with boxes 11. The boxes 11 have sucha length that between their short ends and the short ends of the elements there is formed a bearing area 12 of prescribed width. The elements shown on the figure are joined by tongue and groove."
FIG. 2 shows a vertical cross section of one embodiment of the invention. The box 13 placed on the underside of the element 10 has one plane plate 14 parallel to the underside of the element, two side-pieces l and 16 oriented perpendicularly to the plane plate, and two flanges 17 and 18. The flanges 17 and 18 are intended to support the box 13. To that purpose there are in both the long sides of the element thin grooves 19 and 20 milled out, the length of which shall amount at least to that of the box 13. By means of the flanges the mounting box becomes very simple. It consists in introducing the flange 17 into the groove 19, the plane plate at the same time being kept bent outwards from the underside of the element. After that, the side-piece 16 IS bent outwards from the long side of the element and is brought upwards until the flange springs into the groove 20.
In the plane plate 14 of the box there are holes 21 for letting in the sound to the space 22 formed by the box and the lower large surface of the element.
The space 22 contains a layer 23 of some porous sound-absorbing material, such as mineral wool, woodwool or similar. The thickness of the sound-absorbing layer may vary according to what demands are put on the insulating power. In the example shown, the space 22 is totally filled by the sound-absorbing material the maximum sound-insulation thus being obtained. The holes provided for letting in the sound may suitably occupy at least 10 15 percent of the surface of the plane plate.
The elementshown in FIG. 3 is principally constructed in the same way as the previously described one. The difference is that the box has been given a profile with rounded corners instead of rectangular ones and, further, that the thickness of the sound-absorbing layer 25 is less than the distance between the underside of the element and the plane box plate 26. By placing the layer 25 at some distance from the underside of the element 10 an improved sound-insulation is obtained in relation to the alternative of letting a layer of the same thickness touch the underside of the element.
The element shown in FIG. 4 is provided with a box 27 the comers of which are chamfered by 45.
FIG. 5, finally, shows an element the box 29 of which is shaped like a U-profile without flanges. The box is fixed to the element by nailing, screwing or gluing.
The boxes shown in the figures are firstly intented to be made from plastic laminate, slices of that material being formed to the desired profiles after heating in steam but the invention is not limited to that material. The boxes may, advantageously, be made also of sheet-metal, preferably sheetaluminium or similar.
As will be readily understood from the foregoing describtion the invention involves many important advantages, the greatest one perhaps being the possibility of laying sound-insulating lightweight concrete floorings or ceilings without using scaffolding. Further the total costs as well of the production of the insulation as of its mounting are reduced. Last but not least, floorings and ceilings of an aesthetically appealing shape are obtained.
We claim:
l. A prefabricated sound absorbing ceiling slab unit, comprising a load-bearing continuous body element of lightweight concrete the length of which by many times exceeds its width and height and the width of which is greater than its height, said element having a lower, planar surface and having, along its sides, grooves and tongues for interconnecting adjacent body elements, a box located under said lower planar surface of said body element and connected to said body element, a layer of sound absorbing material resting upon the bottom of said box, the thickness of said sound absorbing layer being less than the distance between the bottom of said box and the underside of said body element, said bottom of the box having apertures permitting sound waves to penetrate said sound absorbing layer, said box having two upright side-pieces the tops of which are flanged inwardly to provide flanges the sides of said elements including slots milled out in said body element below said grooves and tongues, said flanges engaging in said slots thereby connecting said box to said body element.
2. A prefabricated sound absorbing ceiling element according to claim 1, wherein said apertures engage l0-l5 percent of the surface of the plane plate.
3. A prefabricated sound absorbing ceiling element according to claim 1, wherein said box is made of plate of plastic laminat

Claims (2)

  1. 2. A prefabricated sound absorbing ceiling element according to claim 1, wherein said apertures engage 10-15 percent of the surface of the plane plate.
  2. 3. A prefabricated sound absorbing ceiling element according to claim 1, wherein said box is made of a plate of plastic laminate.
US881130A 1969-12-01 1969-12-01 Ceiling or flooring element of lightweight concrete Expired - Lifetime US3656577A (en)

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Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3867995A (en) * 1974-03-01 1975-02-25 Fair Company High density sound transmission loss system
US4365449A (en) * 1980-12-31 1982-12-28 James P. Liautaud Honeycomb framework system for drop ceilings
DE3237062A1 (en) * 1982-10-06 1984-04-12 G + H Montage Gmbh, 6700 Ludwigshafen Prefabricated panel element with a mineral-fibre board and building-element kit for a wall cladding with such panel elements
US4598010A (en) * 1985-07-01 1986-07-01 Armstrong World Industries, Inc. Method of attaching a metal covering to a ceiling board
US4616459A (en) * 1981-05-29 1986-10-14 Calvin Shubow Building construction using hollow core wall
EP0233556A2 (en) * 1986-02-11 1987-08-26 Wilhelmi Werke GmbH & Co.KG Sound-absorbing false ceiling
WO1988002803A1 (en) * 1986-10-09 1988-04-21 Calvin Shubow Building construction using hollow core wall
ES2155753A1 (en) * 1998-10-23 2001-05-16 Lopez Maria Paz Olcina Procedure for forming stuccoed ceilings "in situ" by the application of hardening plaster under continuous thermo-acoustically insulating barriers attached to the concrete of the frames.
US20020178669A1 (en) * 1999-11-29 2002-12-05 Dzevad Harambasic Building structure utilising modular building elements
US20030188921A1 (en) * 2000-12-28 2003-10-09 Hirofumi Kakimoto Sound-insulating floor structures, sound-insulating floor members and method for constructing said sound-insulating floor structures
US20130272551A1 (en) * 2010-12-23 2013-10-17 Kirchdorfer Fertigteilholding Gmbh Sound protection component
US20160159209A1 (en) * 2013-08-12 2016-06-09 Bayerische Motoren Werke Aktiengesellschaft Bend of a Metal Sheet, Preferably in the Visually Relevant Exterior Region of a Vehicle

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US1231348A (en) * 1915-08-24 1917-06-26 Joseph B Hernandez Three-way floor construction.
US1992509A (en) * 1931-09-14 1935-02-26 Burgess Lab Inc C F Sound absorbing construction
US2014749A (en) * 1933-02-01 1935-09-17 Coast Insulating Company Acoustic tile
US2097892A (en) * 1935-11-25 1937-11-02 Edward R Powell Insulated tile unit and structure
US2271929A (en) * 1942-02-03 Building interior construction
US2669114A (en) * 1951-03-22 1954-02-16 Ovella D Mills Faced, reinforced block wall
FR1172610A (en) * 1957-02-15 1959-02-12 Ruggieri Ets Composite plate
US2902854A (en) * 1956-03-12 1959-09-08 Tecfab Inc Prefabricated roof or ceiling panel
US2916909A (en) * 1956-01-09 1959-12-15 Incorporated Fenestra System of building construction
US3074505A (en) * 1959-11-03 1963-01-22 Kurt W Schulz Acoustical tile or the like and its manufacture
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