US2043987A - Structural unit - Google Patents

Structural unit Download PDF

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Publication number
US2043987A
US2043987A US623731A US62373132A US2043987A US 2043987 A US2043987 A US 2043987A US 623731 A US623731 A US 623731A US 62373132 A US62373132 A US 62373132A US 2043987 A US2043987 A US 2043987A
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United States
Prior art keywords
paper
openings
sheets
sound
areas
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Expired - Lifetime
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US623731A
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English (en)
Inventor
George B Brown
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Johns Manville Corp
Johns Manville
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Johns Manville
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Filing date
Publication date
Application filed by Johns Manville filed Critical Johns Manville
Priority to US623799A priority Critical patent/US2132642A/en
Priority to US623731A priority patent/US2043987A/en
Priority to US658937A priority patent/US2043988A/en
Priority to BE398436D priority patent/BE398436A/xx
Priority to FR762525D priority patent/FR762525A/fr
Application granted granted Critical
Publication of US2043987A publication Critical patent/US2043987A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • 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
    • 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
    • E04B2001/8414—Sound-absorbing elements with non-planar face, e.g. curved, egg-crate shaped
    • 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
    • E04B2001/8438—Slot shaped holes
    • 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
    • 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
    • E04B2001/8461—Solid slabs or blocks layered
    • E04B2001/8471—Solid slabs or blocks layered with non-planar interior transition surfaces between layers, e.g. faceted, corrugated
    • 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
    • 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
    • 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
    • Y10T428/24281—Struck out portion type
    • 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.]
    • 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
    • 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
    • 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 absorbing unit and method of making the same. It Arelates lespecially to a composite of a plurality of sheets provided each with a multiplicity of closely spaced ⁇ openings of substantial size, adapted to admit incident sound, disposed rearwardly with respect to imperforate forward portions of the sheet and largely ⁇ concealed from view from a forward position.
  • the invention comprises a sound absorbing unit including abody member provided with sound absorbing spaces and an outer portion thereof, described herein, for convenience, as the facing element, of irregular surface having a multiplicity of openings extending at an angle, suitably at approximately a right angle, to the general plane of the facing element and adapted to admit incident sound to the sound absorbing spaces within the unit.
  • acoustical structures consisting of sound absorbing pads provided with apertured facing elements, such .as woven fabric or closely perforated'metal sheeting. While such structures are very useful and advantageous, there is a field for a modified form of construction. In the type now in use, there ls some difficulty due to closing of the openings in the facing element, when the facing element is painted or otherwise decorated, if the openings are very small. On the other hand, if the openings are large, they may be conspicuous and create an architectural effect thatis not desired in certain installations.
  • FIG. 1 shows a plan view of an acoustical unit provided with an improved outer sheet or facing element in which the openings adapted to admit incident sound are largely or wholly concealed from view from a forward position.
  • Fig. 2 shows a cross sectional view along the line 2 2 of Fig. 1.
  • Fig. 3 shows a plan view of a modification in 5 which the sheets have an irregular surface that resembles in appearance a basket weave with the cross or filler bands omitted.
  • Fig. 4 shows a cross sectional view along the line 4 6 of Fig. 3, and Fig. 5, a similar view on 10 line 5 5.
  • i denotes a plurality of spaced sheets pro'- vided with irregularities of surface, including elel5 vations 2, depressions 3, and intermediate areas 4 between the elevated or forward and depressed or rearwardly disposed portions, indicated, respectively, by the reference characters 2 and 3,
  • the said intermediate areas or portions of the 20 sheet, disposed rearwardly with respect to the forward portions, are provided with openings or apertures 5 (Fig. 2), of substantial size, adapted to admit incident sound.
  • the various sheets of irregular surface are closely spaced and composited, in the assembled unit, and lie in planes that are generally parallel and define between them inner, sound absorbing spaces 6 that communicate with each other by means'of the openings 5.
  • 'I'he openings 5 in the various sheets are non-registering, and thus cause sound which passes into the unit to undergo numerous changes of direction, in a labyrinth of intercommunicating spaces.
  • the openings 9 between ⁇ the elevated portions l and the lateral adjacent depressed portions 8 may be essentially cuts or slits of width extending approximately at aright angle to the general plane of the several sheets, to form a structure resembling a modified basket-weave. 'I'he said slits are sound-permeable, are adapted to admit incident sound, and lie in a plane that forms approximately a right angle with the general plane of the 45 ,facing element.
  • the sheet material used in constructing the units of the types described may be a fire-resistant, felted product such as paper.
  • the paper may comprise newsprint pulp, asbestos bers, or 50 the like. If the fibers composing the paper are combustible per se, they may be treated to make them fire-resistant.
  • wood pulp may be made into paper with a suitablev proportion of a nre-retarding substance, such as a hydrated chemical, as, for example, alum or hydrated magnesium ammonium phosphate.
  • the inner sheets constituting the body of the acoustical unit and the outer sheet or facing element may have the same or diierent compositions.
  • the facing 'element may be of more rigid composition, in order to assist in maintaining an established shape of exterior of the block.
  • a fire-resistant paper is first made by a conventional method.
  • the finished and dried paper is passed between dies or rollers in order to pro- Ivide irregularities of surface of the paper.
  • Rollers of a satisfactory type may be similar to those adapted to produce so-called indented paper,
  • rollers or dies have elevated portions of approximately flat surface and depressed portions of similar shape of surface and may have connecting portions or intermediate areas that extend more or less at a right angle to the planes of the fiat surfaces of the elevated and depressed portions.
  • the elevations on one roller mesh with the depressions on the other; the intermediate areas on one roller mesh also with those on the companion roller.
  • the paper before indenting may be moistened, as by being subjected to a steaming operation just sufcient to leave the -paper somewhat brittle and not so readily deformable without tearing as would be the case if the paper were more thoroughly moistened.
  • the indenting rollers are set somewhat closer together than is the usual practice. Various settings may be used.
  • the holes Being in areas that are transverse, that is, disposed at an angle that is suitably approximately a rightangle to the general plane of the sheet, and particularly to the plane connecting the high spots or forward portions of the sheet, as assembled in the unit, the holes also extend in one direction transversely, suitably at a right angle, to the plane of the forward portions.
  • the paper issues from the indenting and tearing rollers, it is submitted to a coating and drying treatment, to maintain it in deformed and torn condition. Thus, it is coated with a proximately 1 pound per board foot.
  • This block stiening chemical as by being sprayed with a dilute, aqueous solution of sodium silicate or a dilute solution of bakelite and then passed through a steam heated drying chamber. 'Ihis produces a more or less stiff sheet, in which the sodium silicate or phenol-aldehyde resin (bakelite) serves to maintain the form in which the sheet is dried.
  • the thus stiifened sheet of stabilized irregularity of surface and tears' is then composite with similar sheets, the alternating sheets being laid, suitably, in opposite directions or crossed, in order to minimize the likelihood of internesting of the irregularities of adjacent sheets.
  • an adhesive such as a solution of sodium silicate or glue, to provide a layer of adhesive over the high spots of the several sheets.
  • the sheets with the thus applied adhesive are then composited and are pressed lightly together to cause adherence.
  • the nished composite is then dried and may be trimmed to size.
  • the product has interesting properties, some of which have been indicated already.
  • the product is inexpensive, particularly in comparison with other sound absorbing units now on the market.
  • the overall density is loW.
  • a block of the type illustrated in Figs. l and 2,' fabricated from asbestos paper weighing 6 lbs. per hundred square feet of area (before being indented), with 16 plies of indented paper per inch of thickness has an overall density of apis also of satisfactory sound absorbing properties;l it absorbs 77% of incident sound of a frequency of 512 cycles per second and 67% of frequency 1052 cycles.
  • the openings may be largely concealed or invisible when viewed from a forward position butreadily visible when viewed in perspective.
  • a unit provided with a facing element having such openings may be painted and repainted over the forward positions, by brush or otherwise.
  • the openings persist and are not bridged over by the application of even a large number of coats of paint. Because the plane in which the openings lie is more or less vertical, when the structure is used in a ceiling, the objectionable falling of dust through the holes in such an installation is reduced to a minimum.
  • the forward or raised portions of the facing element are preferably impermeable to sound, as illustrated.
  • the facing member is suitably inelastic.
  • impermeable refers to the condition of being not adapted to transmit sound to a substantial extent by air conduction. Thus, a continuous, unapertured sheet of metal would be considered impermeable to sound.
  • Such'a structure to which the invention is applicable is om comprising composited sheets ofcorrugated fire-resistant paper.
  • asbestos paper may be slightly moistened with steam and passed between corrugating rollers provided with ridges on. one roller that mesh with corresponding troughs in the companion roller.
  • 'Ihe rollers may be of such type and set so closely together that the clearance in areas in which it is desired to tear the paper is less than the thickness of the paper being corrugated. These areas may be those.
  • Corrugated sheets made as described may be composited with each other, in cross-wise relationship, or with alternating sheets of paper indented and torn as described above. Since the positions of tearing of the paper during corrugation are irregularly spaced, it is obvious that openings corresponding to the tears will bein non-registering relationship in the sev veral composited sheets.
  • a structural unit comprising in combination a composite of a plurality of spaced sheets provided each with a multiplicity of openings, a facing element of irregular surface, and-aperturedl areas in the facing element extending trans versely to the general plane thereof, the said openings being in non-registering relationship in the several sheets.
  • a structural ⁇ unit comprising in combination a composite of a plurality of spaced sheets of asbestos paper provided each with a multiplicity of non-registering openings, an asbestos paper facing element of irregular surface, apertured areas in the facing element extending approximately transversely to the general plane thereof, and a stiifening material coated over the said sheets and facing element with preservation of -k the permeability thereof to sound.
  • a structural unit comprising in combination a composite of a plurality of spaced sheets provided each with a multiplicity of openings, a fac,-
  • Sound absorbing means comprising a body portion, including composited spaced sheets provided with perforations adapted to admit incident sound and a facing element adheredto the said bodyportion, the said facing element includ'- ing laterally adjacent elevated and depressed portions and provided with sound-permeable slits be ⁇ tween ythe said laterally adjacent elevated and depressed portions, the said slits' lying in a plane that forms approximately a right angle with the general plane of the facing element.
  • a ⁇ preformed sound absorbing unit comprisl ing a plurality of composited indented sheets, alternating elevated and depressed portions thereof constituting irregularities of surface and defining, between adjacent sheets, voids limited on all sides and at lclose intervals by the said irregularities, and intermediate areasn extending between the elevated and depressed portions and transversely with respect to the general plane of the elevated portions, the said intermediate areas being provided with openings adapted to admit incident 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)
US623731A 1932-07-21 1932-07-21 Structural unit Expired - Lifetime US2043987A (en)

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 (forum.php) 1932-07-21 1933-08-02
FR762525D FR762525A (fr) 1932-07-21 1933-08-31 Perfectionnements apportés aux éléments amortisseurs du son et à leur procédé de fabrication

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
US2043987A true US2043987A (en) 1936-06-16

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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

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Application Number Title Priority Date Filing Date
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

Country Status (3)

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US (3) US2043987A (forum.php)
BE (1) BE398436A (forum.php)
FR (1) FR762525A (forum.php)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3362867A (en) * 1964-07-06 1968-01-09 Midland Ross Corp Lading pallet of laminated construction
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
USD632518S1 (en) * 2002-12-30 2011-02-15 Whirlpool Corporation Wall cabinet
US20110209424A1 (en) * 2010-02-26 2011-09-01 Henkel Corporation Self adhering window flashing tape with multi-directional drainage plane
US8563114B2 (en) * 2009-12-11 2013-10-22 Astenjohnson, Inc. Industrial fabric comprised of selectively slit and embossed film
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US5858509A (en) * 1996-11-15 1999-01-12 Digital Equipment Corporation Attenuating vibrations in a mounting shelf for multiple disk drives
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US8563114B2 (en) * 2009-12-11 2013-10-22 Astenjohnson, Inc. 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
US20110209424A1 (en) * 2010-02-26 2011-09-01 Henkel Corporation Self adhering window flashing tape with multi-directional drainage plane
US9816215B2 (en) * 2012-06-07 2017-11-14 Astenjohnson, Inc. Compression resistant, selectively slit and embossed films and industrial textiles made thereof
US20140099464A1 (en) * 2012-10-04 2014-04-10 ST Global Partners, LLC Peel and stick decoupling membrane
US9194119B2 (en) * 2012-10-04 2015-11-24 ST Global Partners, LLC Peel and stick decoupling membrane
US9920537B2 (en) * 2012-10-04 2018-03-20 ST Global Partners, LLC Peel and stick decoupling membrane
US10753106B2 (en) 2012-10-04 2020-08-25 Schluter Systems L.P. Peel and stick decoupling membrane
USD810324S1 (en) * 2015-10-07 2018-02-13 Groupe Isolofoam Inc. Insulation panel
USD830584S1 (en) * 2015-11-04 2018-10-09 Joe Comitale Flooring membrane
AU2019253891B2 (en) * 2018-10-31 2020-09-10 Hung-Ming Hsu Sound absorbing board

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FR762525A (fr) 1934-04-11
US2132642A (en) 1938-10-11
US2043988A (en) 1936-06-16
BE398436A (forum.php) 1933-09-30

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