US2132642A - Sound absorbing unit - Google Patents
Sound absorbing unit Download PDFInfo
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- US2132642A US2132642A US623799A US62379932A US2132642A US 2132642 A US2132642 A US 2132642A US 623799 A US623799 A US 623799A US 62379932 A US62379932 A US 62379932A US 2132642 A US2132642 A US 2132642A
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- sound
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- perforations
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- 239000010425 asbestos Substances 0.000 description 5
- 238000007373 indentation Methods 0.000 description 5
- 229910052895 riebeckite Inorganic materials 0.000 description 5
- 239000000853 adhesive Substances 0.000 description 3
- 230000001070 adhesive effect Effects 0.000 description 3
- 230000004888 barrier function Effects 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 239000004115 Sodium Silicate Substances 0.000 description 1
- 240000008042 Zea mays Species 0.000 description 1
- 235000005824 Zea mays ssp. parviglumis Nutrition 0.000 description 1
- 235000002017 Zea mays subsp mays Nutrition 0.000 description 1
- 239000006096 absorbing agent Substances 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 235000005822 corn Nutrition 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000011490 mineral wool Substances 0.000 description 1
- 238000010422 painting Methods 0.000 description 1
- 229920000136 polysorbate Polymers 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 1
- 229910052911 sodium silicate Inorganic materials 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 210000002268 wool Anatomy 0.000 description 1
Images
Classifications
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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
- 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
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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
- 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
- E04B2001/742—Use of special materials; Materials having special structures or shape
- E04B2001/747—Corrugated materials
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- E—FIXED CONSTRUCTIONS
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- 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
- E04B2001/8414—Sound-absorbing elements with non-planar face, e.g. curved, egg-crate shaped
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- E—FIXED CONSTRUCTIONS
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- 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
- E04B2001/8438—Slot shaped holes
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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
- 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
- E04B2001/8452—Tray or frame type panels or blocks, with or without acoustical filling with peripheral frame members
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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
- 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
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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
- 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
- E04B2001/8471—Solid slabs or blocks layered with non-planar interior transition surfaces between layers, e.g. faceted, corrugated
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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
- 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
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S138/00—Pipes and tubular conduits
- Y10S138/04—Air conditioning
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
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- Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
- Y10T428/24273—Structurally defined web or sheet [e.g., overall dimension, etc.] including aperture
- Y10T428/24281—Struck out portion type
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
- Y10T428/24273—Structurally defined web or sheet [e.g., overall dimension, etc.] including aperture
- Y10T428/24322—Composite web or sheet
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
- Y10T428/24355—Continuous and nonuniform or irregular surface on layer or component [e.g., roofing, etc.]
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
- Y10T428/24628—Nonplanar uniform thickness material
- Y10T428/24661—Forming, or cooperating to form cells
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
- Y10T428/24628—Nonplanar uniform thickness material
- Y10T428/24669—Aligned or parallel nonplanarities
- Y10T428/24694—Parallel corrugations
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
- Y10T428/24628—Nonplanar uniform thickness material
- Y10T428/24669—Aligned or parallel nonplanarities
- Y10T428/24694—Parallel corrugations
- Y10T428/24711—Plural corrugated components
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
- Y10T428/24628—Nonplanar uniform thickness material
- Y10T428/24669—Aligned or parallel nonplanarities
- Y10T428/24694—Parallel corrugations
- Y10T428/24711—Plural corrugated components
- Y10T428/24727—Plural corrugated components with planar component
Definitions
- This invention relates to a-sound dissipating forated in a manner adapted to admit incident and sound absorbing unit and particularly to one sound, as at positions 3 and 4.
- I have used to provided with a labyrinth of intercommunicating advantage perforations that range in diameter spaces between materials that may be relativelyfx from 0.03 to 0.06 inch, spaced on 1A inch centers.
- a perforation of such size transmits sound with- 6
- a preferred embodiment of the invention comout absorbing a large part thereof.
- barriers or other means for deecting sound and in the outer sheet may be somewhat larger, say, l0 causing it to pass, in part, from a given" space 0.2 inch in diameter, in order to avoid bridging through 'perforations into an adjacent space. over andvclosing of the holes by the decorating It is conventional to absorb sound in capillary material. or other small spaces in felts and similar mate- For best results, the perforations in the several A rials. Also, there are acoustical constructions in layers should be discontinuous, that is, the per- 15 which a felted sheet is provided with perforations forations in one layer do not register with those adapted to permit the entrance of sound into the in an adjacent layer.
- the perforations are perforations and, through the side walls of pernonfregistering, sound passing through the perforations, into the multiplicity of small spaces beforations is largely reflected into the spaces 5 tween the individual fibers composing the sheet. which are defined by adjacent layers of sheet 20
- the perforations are relamaterial and which extend laterally, in a directively large, whereas the spaces between the fibers tion that may be approximately parallel to the are smaller, in fact .very much smaller in area of face of the unit. cross section than the perforations.
- the spaces may be provided with constrictions,
- the present invention provides a novel type of such as barriers or other means for deflecting the 25 acoustical unit in which perforations communisound at intervals and causing it to pass, in ⁇ part, cate with laterally extending passages that may through perforations communicating with an ad- ,be much larger than the perforations. Also, the l jacent space.
- the barriers or constrictions may linvention provides a.
- preformed sound absorbing take the form of cross-indentations or depreslight in weight, effective in thermal insulation, tend in a direction more or less at a right angle and adapted to bev decorated without the necesto the length of the corrugations.4
- sity of applying an independent facing member the cross-indentations do not close the space over the exposed surface. Other objects and adentirely.
- Fig. 1 is a perspective view, broken away in As an alternativev for the corrugations, there 4o part for clearness of illustration, of a preferred may be used other Spacing means, as, v101 example. 40
- Fig. 2 is a cross section taken on the line 2-2 of than corrugations.
- Fig. 3 is a cross section taken on the line 3-3 of shows sheets maintained in spaced relationship u .unit or block that is inexpensive to manufacture, sions 6 in the corrugated sheet.
- Fig. 4 shows a modification of the invention Drising solid particles 8.
- These particles may comprising sheets of asbestos paper or the like consist of spongacork, or the like, suitably emand means for spacing the sheets from each bedded in the various sheets of material, as illusother. trated.
- like reference characters V When spacing means such as illustrated in Fig. 50 denote like parts. i Y 4 are used, there are provided irregular spaces 9 Figures 1-3 show a sound absorbing vunit combetween the several layers of material in the unit. ⁇ prising a plurality of alternate layers ,of sheet It will be seen that the structure comprises a material i of plane surface composited with corsound-permeable facing sheet and a sheet memrugated sheets 2.
- the several layers are perber of uneven surface, as for example the corruierred at this time is asbestos paper.
- Other sheet material may be used, including thin sheet steel.
- steel is not a. preferred material.
- Fabrics that are freely permeable to sound and that are in themselves sound absorbing, such as wool or mineral wool elts, may be used. The use of such sound absorbing ielts, however, is not necessary, as sound, may be adequately dissipated and absorbed by an acoustical block of the type illustrated, without the assistance of materials of constructions that are themselves eective sound absorbers.
- the acoustical structure of the present invenz tion may be applied to buildings in a convenient manner.
- the units may be nailed, fastened in frames, or otherwise secured to the ceiling or a wall of the room.
- the units may be arranged so that a sheet of material ofv perforated plane surface is on the outer or exposed face of the unit.
- the units may abut at their 'side edges. Sound waves may pass from the edge of one unit into the spaces in an adjacent unit.
- the sound may be caused to travel, in part,
- the sound absorbing units may be'fabrlcated in vany suitable manner. l
- units oi the type illustrated in Figs. -S
- Vportion of the paper is corrugated and crossindented, as described by Seigle. Sheets of plane surface suitably including the cross-indentations described and of corrugated surface are then composited in alternate layers. The sheets may be held together by an adhesive. Thus, an aqueous solution of sodium silicate may ⁇ be'applied to the opposite sidesof the corrugated sheets in such manner as to wet the tops of the crests andi the outside of the bottoms of the troughs.
- corrugated sheets with the streaks oi adhesive thus applied are e then adhered to alternating sheets of plane surface. This procedure is repeated until there 'is built a composite or block of the thickness desired.
- the composited block may, have various dimensions.
- a block may be t to 5 inches or more in thickness and oi length and breadth suited to the installation in which the block is to be used.
- the block may havev faces that are l x 1 feet, 2 x d feet, or of other suitablesize. Perforations that may be used have been described, although it is to be understood that many' other sizes and spacings may be used.
- the corrugations likewise, may be of various widths or heights. Thus, the corrugations may be V5 inch in width, from crest to crestlv There may be 5 to 10, say d, layers each of alternating corrugated sheets having the cross-indentations described and sheets of plane surface',I per inch of thickness of the block.
- the modification illustrated in idg. t may be fabricatedl by adhesively or otherwise securing together a ielted brous product comprising spacing means and made as described, for example, in U. S. Patent 1,218,679, issued March 13, 1917, to lidanville. .
- a ielted sheet such as asbestos paper, comprising embedded spacing means, such as particles of corn cob, sponge, or the like. After these sheets are made and dried, they are provided with adhesive over the high spots and are composited to give a block of the thickness desired.
- perforation is used herein to define openings adapted to transmit incident sound.
- v l An acoustical unit comprising composited sheets provided each vwith. perfor-ations adapted to'admit incident sound and defining sound absorbing spaces extending laterally in a direction approximately parallel to the face oi the unit,
- An acoustical unit comprising composited sheets provided with perforations adapted to admit incident sound and defining laterally extending spaces of relatively large area ofv cross section adapted to oier less resistance per unit of length to the passage of sound therethrough than onered by the several pertorations, and constrictions in the spaces at intervals for deecting sound.
- a sound absorbing unit comprising a plurality of composited, non-nesting sheets of corrugated and cross indented paper provided with spaced perforations adapted to admit incident sound.
- Sound absorbing means comprising composited, spaced relatively thin sheets provided severally with spaced openings adapted to admit incident sound and provided also with irregularities of surface extending between adjacent sheets and determining the spacing of the sheets from each other in non-contacting positions, the said perforatlons in one layer of the said sheets being largely non-registering with the perforations in adjacent layers of the sheets and the spaces defined between the sheets being adapted to absorb sound.
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- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Electromagnetism (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Building Environments (AREA)
Description
Oct. 11, 1938. R. v. PARSONS f 2,132,642
SOUND ABSORBING UNIT Filed July 2l, 1932 v YAYAYAVAYAT'AYA l INVENTOR R gym om] FParJ/vs,
RNEY
Patentd t.11,193s l Y 2,132,642
N UNITED STATES PATsNT oFFloi:
SOUND ABSORBING UNIT Raymond V. Parsons, New York, N. Y.. assignor to Jolins-Manville Corporation, New York, N. Y., a corporation of New York y Application July 21, 1932, Serial N0. 623,799
4 Claims. (CL 154-45) This invention relates to a-sound dissipating forated in a manner adapted to admit incident and sound absorbing unit and particularly to one sound, as at positions 3 and 4. I have used to provided with a labyrinth of intercommunicating advantage perforations that range in diameter spaces between materials that may be relativelyfx from 0.03 to 0.06 inch, spaced on 1A inch centers.
5 ineffective per se in absorbing sound. A perforation of such size transmits sound with- 6 A preferred embodiment of the invention comout absorbing a large part thereof. When it is prises composited, spaced sheets of asbestos paper desired to decorate the outer sheet on the face oi or the like that are discontinuously perforated. the unit that is to be exposed to incident sound, The spaces may be constricted `at intervals with as by-painting or lacquering, the .perforations 4.
barriers or other means for deecting sound and in the outer sheet, may be somewhat larger, say, l0 causing it to pass, in part, from a given" space 0.2 inch in diameter, in order to avoid bridging through 'perforations into an adjacent space. over andvclosing of the holes by the decorating It is conventional to absorb sound in capillary material. or other small spaces in felts and similar mate- For best results, the perforations in the several A rials. Also, there are acoustical constructions in layers should be discontinuous, that is, the per- 15 which a felted sheet is provided with perforations forations in one layer do not register with those adapted to permit the entrance of sound into the in an adjacent layer. When the perforations are perforations and, through the side walls of pernonfregistering, sound passing through the perforations, into the multiplicity of small spaces beforations is largely reflected into the spaces 5 tween the individual fibers composing the sheet. which are defined by adjacent layers of sheet 20 In such constructions, the perforations are relamaterial and which extend laterally, in a directively large, whereas the spaces between the fibers tion that may be approximately parallel to the are smaller, in fact .very much smaller in area of face of the unit. cross section than the perforations. The spaces may be provided with constrictions,
The present invention provides a novel type of such as barriers or other means for deflecting the 25 acoustical unit in which perforations communisound at intervals and causing it to pass, in` part, cate with laterally extending passages that may through perforations communicating with an ad- ,be much larger than the perforations. Also, the l jacent space. The barriers or constrictions may linvention provides a. preformed sound absorbing take the form of cross-indentations or depreslight in weight, effective in thermal insulation, tend in a direction more or less at a right angle and adapted to bev decorated without the necesto the length of the corrugations.4 Preferably, sity of applying an independent facing member the cross-indentations do not close the space over the exposed surface. Other objects and adentirely.
3.3 vantages of the invention will appear as the de- In the structures of Figs. 1-3, the spacing 35 scription thereof progresses. means which maintain the spaced relationship y The invention is illustrated in the drawing in between adjacent layers of sheet material are the which corrugations of alternate sheets.
Fig. 1 is a perspective view, broken away in As an alternativev for the corrugations, there 4o part for clearness of illustration, of a preferred may be used other Spacing means, as, v101 example. 40
form of sound absorbing unit. indentations or irregularities of surface other Fig. 2 is a cross section taken on the line 2-2 of than corrugations. Also, theremay be used spac- Fig. 1. ing means' of the type illustrated in Fig. 4, which Fig. 3 is a cross section taken on the line 3-3 of shows sheets maintained in spaced relationship u .unit or block that is inexpensive to manufacture, sions 6 in the corrugated sheet. These may ex- 30 Fig. 1. to each other by means of spacing elements com- 45 Fig. 4 shows a modification of the invention Drising solid particles 8. These particles may comprising sheets of asbestos paper or the like consist of spongacork, or the like, suitably emand means for spacing the sheets from each bedded in the various sheets of material, as illusother. trated. In the various figures like reference characters V When spacing means such as illustrated in Fig. 50 denote like parts. i Y 4 are used, there are provided irregular spaces 9 Figures 1-3 show a sound absorbing vunit combetween the several layers of material in the unit.` prising a plurality of alternate layers ,of sheet It will be seen that the structure comprises a material i of plane surface composited with corsound-permeable facing sheet and a sheet memrugated sheets 2. The several layers are perber of uneven surface, as for example the corruierred at this time is asbestos paper. Other sheet material may be used, including thin sheet steel. However, steel is not a. preferred material. Fabrics that are freely permeable to sound and that are in themselves sound absorbing, such as wool or mineral wool elts, may be used. The use of such sound absorbing ielts, however, is not necessary, as sound, may be adequately dissipated and absorbed by an acoustical block of the type illustrated, without the assistance of materials of constructions that are themselves eective sound absorbers.
The acoustical structure of the present invenz tion may be applied to buildings in a convenient manner.
In the acoustical treatment of a room,'for example, the units may be nailed, fastened in frames, or otherwise secured to the ceiling or a wall of the room. If desired, the units may be arranged so that a sheet of material ofv perforated plane surface is on the outer or exposed face of the unit. When a given area of the ceilingv or wall is coveredwith such units, the units may abut at their 'side edges. Sound waves may pass from the edge of one unit into the spaces in an adjacent unit.
When sound strikes the perforated exposed face of the unit, it enters through theperforations.
.Because of scattering and also because of the cause the lsound to be repeatedly deected, in
partuand to pa@ through the perforations into adjacent' laterally extending spaces dened by other layers of sheet material in the composite. The passage through the periorations and laterally extending spaces and the deection oi the sound is repeated a great number of times. In
lr; fact, the sound may be caused to travel, in part,
at least, through a course oi great length, may,
greater than the wave length oi the soundin a labyrinth of spaces. During this message oi "sound in a cour that mayl be ci iniinite iength, nracticalit' eresmas. a small mount oi the sound Y may escape from the surface ci the unit. However, the disconunuity ci the perforations or communications and the fact that the laterally extendingspaces are relatively large in area ci cross section, that is, larger in cross section than the several perforationa'and, therefore, oer less resistance to the passage ci sound therethrough,
3 favor the dissipation of the sound within the unit. Also, the simulation of the sound within the unit, with repeated incidence and deection, causes the gradual ydestruition oi the sound, by
' the conversion of ,its energy into heat. J
The sound absorbing units may be'fabrlcated in vany suitable manner. l Thus. units oi the type illustrated in Figs. -S
may -be made by a method involving the process and apparatusjdescribed in U. S. Patents 1,444,-
395-6, issued on February 6, 1923, to seigle. iis-l bestos paper is made in a conventional manner.
It is then perforated, as, for4 example, by passage between coacting rollers, one of which is provided with short piercing pins and the other with ldepressions or dies which mesh with the piercing pins. vAfter the paper is perforated, a
Vportion of the paper is corrugated and crossindented, as described by Seigle. Sheets of plane surface suitably including the cross-indentations described and of corrugated surface are then composited in alternate layers. The sheets may be held together by an adhesive. Thus, an aqueous solution of sodium silicate may` be'applied to the opposite sidesof the corrugated sheets in such manner as to wet the tops of the crests andi the outside of the bottoms of the troughs. The
corrugated sheets with the streaks oi adhesive thus applied are e then adhered to alternating sheets of plane surface. This procedure is repeated until there 'is built a composite or block of the thickness desired. y
The composited block may, have various dimensions. A block may be t to 5 inches or more in thickness and oi length and breadth suited to the installation in which the block is to be used. Thus, the block may havev faces that are l x 1 feet, 2 x d feet, or of other suitablesize. Perforations that may be used have been described, although it is to be understood that many' other sizes and spacings may be used. The corrugations, likewise, may be of various widths or heights. Thus, the corrugations may be V5 inch in width, from crest to crestlv There may be 5 to 10, say d, layers each of alternating corrugated sheets having the cross-indentations described and sheets of plane surface',I per inch of thickness of the block.
The modification illustrated in idg. t may be fabricatedl by adhesively or otherwise securing together a ielted brous product comprising spacing means and made as described, for example, in U. S. Patent 1,218,679, issued March 13, 1917, to lidanville. .There may be made a ielted sheet, such as asbestos paper, comprising embedded spacing means, such as particles of corn cob, sponge, or the like. After these sheets are made and dried, they are provided with adhesive over the high spots and are composited to give a block of the thickness desired.
we products of the present invention are eec; tive m acoustical units. With units i inches thick, ofthe type illustratedV in Figs. 1 3, there has been absorbed 89% of incident 'sound oi' a frequency of 512 cycles per second.
The products are also edective in heat insulation. A typical block` oi perforated and composited asbestos sheets oi plane surface and corirrigated sheets weighs only approximately 1l pounds per cubic foot. V
The term perforation is used herein to define openings adapted to transmit incident sound.
The details that have been given are for the purpose oi' illustration and not restriction of the invention, yand many variations therefrom may be made without departing from the scope o! the invention.
What I claim is: v l. An acoustical unit comprising composited sheets provided each vwith. perfor-ations adapted to'admit incident sound and defining sound absorbing spaces extending laterally in a direction approximately parallel to the face oi the unit,
spirit and the said perforations in one layer of the said sheets being non-registering with the perforations in adjacent layers of the sheets and adapted to cause distribution of incident sound throughout the laterally extending spaces.
2. An acoustical unit comprising composited sheets provided with perforations adapted to admit incident sound and defining laterally extending spaces of relatively large area ofv cross section adapted to oier less resistance per unit of length to the passage of sound therethrough than onered by the several pertorations, and constrictions in the spaces at intervals for deecting sound.
3. A sound absorbing unit comprising a plurality of composited, non-nesting sheets of corrugated and cross indented paper provided with spaced perforations adapted to admit incident sound.
4. Sound absorbing means comprising composited, spaced relatively thin sheets provided severally with spaced openings adapted to admit incident sound and provided also with irregularities of surface extending between adjacent sheets and determining the spacing of the sheets from each other in non-contacting positions, the said perforatlons in one layer of the said sheets being largely non-registering with the perforations in adjacent layers of the sheets and the spaces defined between the sheets being adapted to absorb sound.
RAYMOND V. PARSONS.
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US623799A US2132642A (en) | 1932-07-21 | 1932-07-21 | Sound absorbing unit |
US623731A US2043987A (en) | 1932-07-21 | 1932-07-21 | Structural unit |
US658937A US2043988A (en) | 1932-07-21 | 1933-02-28 | Lightweight unit |
BE398436D BE398436A (en) | 1932-07-21 | 1933-08-02 | |
FR762525D FR762525A (en) | 1932-07-21 | 1933-08-31 | Improvements to sound dampening elements and their manufacturing process |
Applications Claiming Priority (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US623799A US2132642A (en) | 1932-07-21 | 1932-07-21 | Sound absorbing unit |
US623731A US2043987A (en) | 1932-07-21 | 1932-07-21 | Structural unit |
US658937A US2043988A (en) | 1932-07-21 | 1933-02-28 | Lightweight unit |
BE398436T | 1933-08-02 | ||
FR762525T | 1933-08-31 |
Publications (1)
Publication Number | Publication Date |
---|---|
US2132642A true US2132642A (en) | 1938-10-11 |
Family
ID=24499200
Family Applications (3)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US623731A Expired - Lifetime US2043987A (en) | 1932-07-21 | 1932-07-21 | Structural unit |
US623799A Expired - Lifetime US2132642A (en) | 1932-07-21 | 1932-07-21 | Sound absorbing unit |
US658937A Expired - Lifetime US2043988A (en) | 1932-07-21 | 1933-02-28 | Lightweight unit |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US623731A Expired - Lifetime US2043987A (en) | 1932-07-21 | 1932-07-21 | Structural unit |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US658937A Expired - Lifetime US2043988A (en) | 1932-07-21 | 1933-02-28 | Lightweight unit |
Country Status (3)
Country | Link |
---|---|
US (3) | US2043987A (en) |
BE (1) | BE398436A (en) |
FR (1) | FR762525A (en) |
Cited By (33)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2474709A (en) * | 1943-12-16 | 1949-06-28 | Stewart Warner Corp | Heating system |
US2758047A (en) * | 1953-09-17 | 1956-08-07 | Dowd Alfred | Flexible corrugated wrapping sheet |
US2826261A (en) * | 1956-08-30 | 1958-03-11 | Oliver C Eckel | Acoustical control apparatus |
US3168432A (en) * | 1961-12-22 | 1965-02-02 | Thore M Elfving | Core material |
US3380206A (en) * | 1965-09-29 | 1968-04-30 | Soundlock Corp | Lay-in acoustical ceiling panel with flexible diaphragms |
US3507634A (en) * | 1965-10-22 | 1970-04-21 | United Aircraft Corp | Composite metal structure |
US3985198A (en) * | 1974-02-20 | 1976-10-12 | Firma Carl Freudenberg | Sound deadening laminate |
US4091591A (en) * | 1975-06-16 | 1978-05-30 | Commissariat A L'energie Atomique | Heat-insulating panel |
US4232093A (en) * | 1973-10-29 | 1980-11-04 | Summa Corporation | High temperature skin construction |
US4838524A (en) * | 1987-09-08 | 1989-06-13 | Cyclops Corporation | Noise barrier |
US5157893A (en) * | 1988-04-15 | 1992-10-27 | Midwest Research Institute | Compact vacuum insulation |
US5212355A (en) * | 1991-10-18 | 1993-05-18 | Hollanding Inc. | Sound absorptive file cabinet door |
US5225622A (en) * | 1990-06-19 | 1993-07-06 | Guy L. Gettle | Acoustic/shock wave attenuating assembly |
US5325893A (en) * | 1991-10-04 | 1994-07-05 | Tokushu Paper Mfg. Co., Ltd. | Air duct and paper therefor |
WO1995001484A1 (en) * | 1992-02-12 | 1995-01-12 | Suppression Systems Engineering Corporation | Acoustic/shock wave attenuating assembly |
WO1999063171A2 (en) * | 1998-06-01 | 1999-12-09 | Herman Miller, Inc. | Modular furniture system |
US6194052B1 (en) * | 1996-01-25 | 2001-02-27 | Dale Knipstein | Soundabsorbing element and procedure for manufacture of this element and use of this element |
US20070122568A1 (en) * | 2003-12-12 | 2007-05-31 | Bloemeling Heinz | Sound absorbing heat shield |
US20080069388A1 (en) * | 2006-09-13 | 2008-03-20 | Andrew Bartha | Room dampening panel |
US20090090580A1 (en) * | 2006-05-24 | 2009-04-09 | Airbus Deutschland Gmbh | Sandwich Element for the Sound-Absorbing Inner Cladding of Means of Transport, Especially for the Sound-Absorbing Inner Cladding of Aircraft |
US20110100747A1 (en) * | 2006-05-24 | 2011-05-05 | Airbus Operations Gmbh | Sandwich element for the sound-absorbing inner cladding of means of transport, especially for the sound-absorbing inner cladding of aircraft |
US20130206501A1 (en) * | 2012-02-13 | 2013-08-15 | Usg Interiors, Llc | Ceiling panels made from corrugated cardboard |
US20140013695A1 (en) * | 2012-07-13 | 2014-01-16 | Victor Wolynski | Modular building panel |
US20160365079A1 (en) * | 2014-03-04 | 2016-12-15 | Jean-Marc Scherrer | High and low frequency sound absorption assembly |
US20160379616A1 (en) * | 2014-02-11 | 2016-12-29 | Leena Rose Wilson | Acoustic absorber and use of said type of acoustic absorber |
US20170256249A1 (en) * | 2016-03-01 | 2017-09-07 | Guardian Industries Corp. | Acoustic wall assembly having double-wall configuration and passive noise-disruptive properties, and/or method of making and/or using the same |
US10304473B2 (en) | 2017-03-15 | 2019-05-28 | Guardian Glass, LLC | Speech privacy system and/or associated method |
US10354638B2 (en) | 2016-03-01 | 2019-07-16 | Guardian Glass, LLC | Acoustic wall assembly having active noise-disruptive properties, and/or method of making and/or using the same |
US10373626B2 (en) | 2017-03-15 | 2019-08-06 | Guardian Glass, LLC | Speech privacy system and/or associated method |
US10726855B2 (en) | 2017-03-15 | 2020-07-28 | Guardian Glass, Llc. | Speech privacy system and/or associated method |
US11207863B2 (en) | 2018-12-12 | 2021-12-28 | Owens Corning Intellectual Capital, Llc | Acoustic insulator |
US11211041B2 (en) * | 2015-12-22 | 2021-12-28 | Razer (Asia-Pacific) Pte. Ltd. | Mesh assemblies, computing systems, and methods for manufacturing a mesh assembly |
US11666199B2 (en) | 2018-12-12 | 2023-06-06 | Owens Corning Intellectual Capital, Llc | Appliance with cellulose-based insulator |
Families Citing this family (20)
Publication number | Priority date | Publication date | Assignee | Title |
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US3362867A (en) * | 1964-07-06 | 1968-01-09 | Midland Ross Corp | Lading pallet of laminated construction |
US3384199A (en) * | 1965-08-13 | 1968-05-21 | Oliver C. Eckel | Acoustical control apparatus |
US3483944A (en) * | 1966-09-09 | 1969-12-16 | John W Handy Jr | Acoustic structure |
US3466019A (en) * | 1967-08-04 | 1969-09-09 | Ronald Priestley | Gas-liquid contact packing sheets |
US3661721A (en) * | 1971-02-05 | 1972-05-09 | Pactide Corp | Compact multistage distillation apparatus having stacked microporous membranes and impermeable films |
US5057176A (en) * | 1988-05-10 | 1991-10-15 | Manville Corporation | Method of forming corrugated paperboard automotive liner |
US4886696A (en) * | 1988-05-10 | 1989-12-12 | Manville Corporation | Corrugated paperboard automotive liner |
DE9310221U1 (en) * | 1993-07-09 | 1994-01-27 | Graf, Volker, 76467 Bietigheim | Insulating body |
US5858509A (en) * | 1996-11-15 | 1999-01-12 | Digital Equipment Corporation | Attenuating vibrations in a mounting shelf for multiple disk drives |
US5926366A (en) * | 1996-11-15 | 1999-07-20 | Digital Equipment Corporation | Tab and slot disk drive vibration reduction structure |
US7207310B2 (en) * | 2005-07-01 | 2007-04-24 | Visteon Global Technologies, Inc. | Noise attenuation device for an air induction system |
FR2889616B1 (en) * | 2005-08-02 | 2008-05-30 | Hutchinson Sa | ACOUSTIC PANEL OF TYPE A BLADE OF AIR |
CA2688470A1 (en) * | 2009-12-11 | 2011-06-11 | Allan Manninen | Industrial fabric comprised of selectively slit and embossed film |
US8490338B2 (en) * | 2010-02-26 | 2013-07-23 | Henkel Corporation | Self adhering window flashing tape with multi-directional drainage plane |
US8251175B1 (en) | 2011-04-04 | 2012-08-28 | Usg Interiors, Llc | Corrugated acoustical panel |
CA2779131A1 (en) * | 2012-06-07 | 2013-12-07 | Allan R. MANNINEN | Compression resistant, selectively slit and embossed films and industrial textiles made thereof |
US9194119B2 (en) | 2012-10-04 | 2015-11-24 | ST Global Partners, LLC | Peel and stick decoupling membrane |
CA164757S (en) * | 2015-10-07 | 2016-06-21 | Groupe Isolofoam Inc | Insulation panel |
CA165227S (en) * | 2015-11-04 | 2018-11-26 | Comitale Joe | Membrane |
TWI669430B (en) * | 2018-10-31 | 2019-08-21 | 許翃銘 | Sound-absorbing panels |
-
1932
- 1932-07-21 US US623731A patent/US2043987A/en not_active Expired - Lifetime
- 1932-07-21 US US623799A patent/US2132642A/en not_active Expired - Lifetime
-
1933
- 1933-02-28 US US658937A patent/US2043988A/en not_active Expired - Lifetime
- 1933-08-02 BE BE398436D patent/BE398436A/xx unknown
- 1933-08-31 FR FR762525D patent/FR762525A/en not_active Expired
Cited By (40)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2474709A (en) * | 1943-12-16 | 1949-06-28 | Stewart Warner Corp | Heating system |
US2758047A (en) * | 1953-09-17 | 1956-08-07 | Dowd Alfred | Flexible corrugated wrapping sheet |
US2826261A (en) * | 1956-08-30 | 1958-03-11 | Oliver C Eckel | Acoustical control apparatus |
US3168432A (en) * | 1961-12-22 | 1965-02-02 | Thore M Elfving | Core material |
US3380206A (en) * | 1965-09-29 | 1968-04-30 | Soundlock Corp | Lay-in acoustical ceiling panel with flexible diaphragms |
US3507634A (en) * | 1965-10-22 | 1970-04-21 | United Aircraft Corp | Composite metal structure |
US4232093A (en) * | 1973-10-29 | 1980-11-04 | Summa Corporation | High temperature skin construction |
US3985198A (en) * | 1974-02-20 | 1976-10-12 | Firma Carl Freudenberg | Sound deadening laminate |
US4091591A (en) * | 1975-06-16 | 1978-05-30 | Commissariat A L'energie Atomique | Heat-insulating panel |
US4838524A (en) * | 1987-09-08 | 1989-06-13 | Cyclops Corporation | Noise barrier |
US5157893A (en) * | 1988-04-15 | 1992-10-27 | Midwest Research Institute | Compact vacuum insulation |
US5225622A (en) * | 1990-06-19 | 1993-07-06 | Guy L. Gettle | Acoustic/shock wave attenuating assembly |
US5325893A (en) * | 1991-10-04 | 1994-07-05 | Tokushu Paper Mfg. Co., Ltd. | Air duct and paper therefor |
US5212355A (en) * | 1991-10-18 | 1993-05-18 | Hollanding Inc. | Sound absorptive file cabinet door |
WO1995001484A1 (en) * | 1992-02-12 | 1995-01-12 | Suppression Systems Engineering Corporation | Acoustic/shock wave attenuating assembly |
US6194052B1 (en) * | 1996-01-25 | 2001-02-27 | Dale Knipstein | Soundabsorbing element and procedure for manufacture of this element and use of this element |
WO1999063171A2 (en) * | 1998-06-01 | 1999-12-09 | Herman Miller, Inc. | Modular furniture system |
WO1999063171A3 (en) * | 1998-06-01 | 2000-02-10 | Miller Herman Inc | Modular furniture system |
US20070122568A1 (en) * | 2003-12-12 | 2007-05-31 | Bloemeling Heinz | Sound absorbing heat shield |
US20090090580A1 (en) * | 2006-05-24 | 2009-04-09 | Airbus Deutschland Gmbh | Sandwich Element for the Sound-Absorbing Inner Cladding of Means of Transport, Especially for the Sound-Absorbing Inner Cladding of Aircraft |
US20110100747A1 (en) * | 2006-05-24 | 2011-05-05 | Airbus Operations Gmbh | Sandwich element for the sound-absorbing inner cladding of means of transport, especially for the sound-absorbing inner cladding of aircraft |
US20080069388A1 (en) * | 2006-09-13 | 2008-03-20 | Andrew Bartha | Room dampening panel |
US8100225B2 (en) * | 2006-09-13 | 2012-01-24 | Nucore Technologies Inc. | Room dampening panel |
US20130206501A1 (en) * | 2012-02-13 | 2013-08-15 | Usg Interiors, Llc | Ceiling panels made from corrugated cardboard |
US8511429B1 (en) * | 2012-02-13 | 2013-08-20 | Usg Interiors, Llc | Ceiling panels made from corrugated cardboard |
US20140013695A1 (en) * | 2012-07-13 | 2014-01-16 | Victor Wolynski | Modular building panel |
US9212485B2 (en) * | 2012-07-13 | 2015-12-15 | Victor Wolynski | Modular building panel |
US10102841B2 (en) * | 2014-02-11 | 2018-10-16 | Leena Rose Wilson | Acoustic absorber and use of said type of acoustic absorber |
US20160379616A1 (en) * | 2014-02-11 | 2016-12-29 | Leena Rose Wilson | Acoustic absorber and use of said type of acoustic absorber |
US20160365079A1 (en) * | 2014-03-04 | 2016-12-15 | Jean-Marc Scherrer | High and low frequency sound absorption assembly |
US10109269B2 (en) * | 2014-03-04 | 2018-10-23 | Jean-Marc Scherrer | High and low frequency sound absorption assembly |
US11211041B2 (en) * | 2015-12-22 | 2021-12-28 | Razer (Asia-Pacific) Pte. Ltd. | Mesh assemblies, computing systems, and methods for manufacturing a mesh assembly |
US20170256249A1 (en) * | 2016-03-01 | 2017-09-07 | Guardian Industries Corp. | Acoustic wall assembly having double-wall configuration and passive noise-disruptive properties, and/or method of making and/or using the same |
US10134379B2 (en) * | 2016-03-01 | 2018-11-20 | Guardian Glass, LLC | Acoustic wall assembly having double-wall configuration and passive noise-disruptive properties, and/or method of making and/or using the same |
US10354638B2 (en) | 2016-03-01 | 2019-07-16 | Guardian Glass, LLC | Acoustic wall assembly having active noise-disruptive properties, and/or method of making and/or using the same |
US10304473B2 (en) | 2017-03-15 | 2019-05-28 | Guardian Glass, LLC | Speech privacy system and/or associated method |
US10373626B2 (en) | 2017-03-15 | 2019-08-06 | Guardian Glass, LLC | Speech privacy system and/or associated method |
US10726855B2 (en) | 2017-03-15 | 2020-07-28 | Guardian Glass, Llc. | Speech privacy system and/or associated method |
US11207863B2 (en) | 2018-12-12 | 2021-12-28 | Owens Corning Intellectual Capital, Llc | Acoustic insulator |
US11666199B2 (en) | 2018-12-12 | 2023-06-06 | Owens Corning Intellectual Capital, Llc | Appliance with cellulose-based insulator |
Also Published As
Publication number | Publication date |
---|---|
FR762525A (en) | 1934-04-11 |
US2043988A (en) | 1936-06-16 |
US2043987A (en) | 1936-06-16 |
BE398436A (en) | 1933-09-30 |
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