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US3295273A - Door and panel construction - Google Patents

Door and panel construction Download PDF

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Publication number
US3295273A
US3295273A US495754A US49575465A US3295273A US 3295273 A US3295273 A US 3295273A US 495754 A US495754 A US 495754A US 49575465 A US49575465 A US 49575465A US 3295273 A US3295273 A US 3295273A
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Prior art keywords
louvre
skin
members
throat
plates
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Expired - Lifetime
Application number
US495754A
Inventor
Jr Herbert W Wehe
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OVERLY Manufacturing Co
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OVERLY Manufacturing Co
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Priority claimed from US286289A external-priority patent/US3273297A/en
Application filed by OVERLY Manufacturing Co filed Critical OVERLY Manufacturing Co
Priority to US495754A priority Critical patent/US3295273A/en
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Publication of US3295273A publication Critical patent/US3295273A/en
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    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B5/00—Doors, windows, or like closures for special purposes; Border constructions therefor
    • E06B5/20—Doors, windows, or like closures for special purposes; Border constructions therefor for insulation against noise
    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B3/00—Window sashes, door leaves, or like elements for closing wall or like openings; Layout of fixed or moving closures, e.g. windows in wall or like openings; Features of rigidly-mounted outer frames relating to the mounting of wing frames
    • E06B3/70—Door leaves
    • E06B3/82—Flush doors, i.e. with completely flat surface
    • E06B3/822—Flush doors, i.e. with completely flat surface with an internal foursided frame
    • 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
    • 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

Definitions

  • the present invention relates generally to partition and doo-r panels employed in the division of floor space in commercial buildings to provide separated work areas. More specifically, the invention is concerned with door and partition panels constructed to suppress passage of noise therethrough, particularly those noises within the sound frequencies of 125 c.p.s. and 1400 c.p.s. These latter sound frequencies are within normal conversation and business machine noises.
  • a partition having an A.S.T.M., Sound Transmission Class, rating of 40 decibels transmits Vlomo of the incident sound
  • a ⁇ 43 decibel Class Rating transmits 17/20000 of the incident sound
  • a 46 decibel Class Rating transmits 1%;,0000 of the incident sound, etc.
  • the efficiency of the panel to suppress passage of sound therethrough is doubled.
  • the clearance between the periphery of the door and the adjacent door frame opening must be sealed to prevent unrestricted passage of sound.
  • One object of the invention is to provide a metal door or partition panel of low cost construction having improved restriction of sound passage therethrough.
  • a further object of the invention is to provide an improved metal door or partition panel resistant to passage of sound therethrough and providing passage of ventilation air therethrough.
  • a still further object of the invention is to provide a metal door or partition panel having high sound transmission loss and which is fire resistant.
  • FIG. l shows in front elevation a door panel providing for ventilation and restriction of passage of sound through the panel
  • FIG. ..2 shows a transverse section through FIG. 1 taken on lines IIII;
  • FIG. 3 shows a transverse section taken on lines III- III of FIG. l;
  • FIG. 4 shows a vertical section taken on lines IV-IV of FIG. 1;
  • FIG. 5 shows a section taken on lines V-V of FIG. 1.
  • FIGS. 1 to 5 of the drawing a further modification of the door panel is shown providing for ventilation through the door panel andsound attenuation.
  • the front and back skin plates 45 and 46 are provided with opposing connected flanges 45a and 46a at each vertical edge and each vertical edge is provided with a reinforcing plate 47 and 48.
  • Two vertically extending stiffening -channels 49 are disposed between the skin plates 45 and 46 and extend to adjacent the top and bott-om edges thereof defining the Iwidth of a ventilating louver throat :50.
  • Adjacent the top of the panel in skin plate 45 and adjacent the bottom of the panel in skin plate 46 are rectangular louver openings 51 and 52 extending transversely between stiffening channels 49.
  • a channel shaped member 53 Extending transversely between said channels 49 and beneath the louver opening 52 is a channel shaped member 53 having its opposite llanges connected to the skin plates 45, 46 and defining the bottom of the louver throat 5t).
  • Each said stitfener 54 flanges abutting the skin plate 46 being held in engagement therewith by spaced spring clips 55, each clip having one end welded to the skin plate and the opposite end resiliently engaging the stiifener flange.
  • the top of the louver throat 50 is defined by the web of a channel member 56 whose upturned flanges are secured to the skin plates 45, and inner flanges of stiifeners 54.
  • the ends of channel 56 abut and are secured to the webs of stilfeners 49.
  • Secured to stiileners 54 inwardly spaced llanges is an expanded metal plate 57 forming the back wall of louver throat 5t). Plate 57 extends vertically from the top of the louver opening 52 to the web of channel 56 and transversely between stiifeners 49.
  • louver opening 51 Upon the inner face of skin plate 45 and extending upwardly from -channel 53 to the -bottom edge of the louver opening 51 are transversely spaced channel stiffeners 59 having one flange abutting and welded to the skin plate 45 and the opposite flange disposed inwardly therefrom. Disposed upon the latter flanges to form the ⁇ front wall of the louver throat is an expanded metal plate 5S having its vertical edges secured to the ⁇ webs of the stitleners 49 and extending above the channel 53 to the bottom of louver opening 51.
  • the louver openings 51 and 52 are covered by louvers 60 and 61 suitably secured therein.
  • the plates 57 and 58 may be of flattened expanded metal having ⁇ 60 percent open area, as shown. IThe louvers 60 and 61 may be of grill type having Si) percent open area as shown.
  • the panel constructions hereinbefore described and the results obtained therefrom were based upon a maximum thickness of about 1% inches.
  • the basic structure is of metal and the interior contains materials generally referred to as non-metallic.
  • the metal portions ⁇ of the door are desirably light in weight.
  • the metal members have been shown enlarged.
  • the panel metal skin plates and the metal stiifeners therefor may be of 16, 18 and 20 gauge metal.
  • stiffening members extending vertically between the front skin plate and adjacent plate-like member from the bottom of the louvre throat to the bottom ofthe skin plate louvre opening
  • closure members disposed between and secured to said skin plates for enclosing said porous material and dening the top and bottom horizontal edges of said door panel.

Landscapes

  • Engineering & Computer Science (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Specific Sealing Or Ventilating Devices For Doors And Windows (AREA)
  • Securing Of Glass Panes Or The Like (AREA)

Description

Jan. 3, 1967 H. w. wEHE, JR
DOOR AND PANEL CONSTRUCTION Original Filed June '7. 1963 A t forneys United States Patent O 3,295,273 DOOR AND PANEL CONSTRUCTION Herbert W. Wehe, Jr., Ligonier, Pa., assignor to Overly Manufacturing Company, Greenburg, Pa., a corporation of Pennsylvania Original application June 7, 1963, Ser. No. 286,289, now Patent No. 3,273,297, dated Sept. 20, 1966. Divided and this application Sept. 27, 1965, Ser. No. 495,754
, 2 Claims. (Cl. 52-145) This application is a division of my copending application Serial No. 286,289, llled June 7, 1963, now Patent No. 3,273,297.
The present invention relates generally to partition and doo-r panels employed in the division of floor space in commercial buildings to provide separated work areas. More specifically, the invention is concerned with door and partition panels constructed to suppress passage of noise therethrough, particularly those noises within the sound frequencies of 125 c.p.s. and 1400 c.p.s. These latter sound frequencies are within normal conversation and business machine noises.
Although industry has successfully employed noise reducing single and double doors and partitions of considerable thickness, up to 6 inches and more, relatively little success has heretofore been had with noise reducing doors and partitions employed in dividing floor areas in ollice and other commercial buildings. These latter doors and partitions are constructed so as to be frequently rearranged to suit changing needs and, of necessity, must be both relatively light in weight and readily set up and removed. Thus the invention herein disclosed in concerned with door and partition panels in the area of 1% inches thick.
Although the same panel construction may be employed in both doors and partitions, the latter may be readily sealed to lloors and walls. Doors being intended for frequent movement cannotllt tightly within their frames and for maximum efficiencies must be provided with seals about their periphery which permit door movement but restrict passage of sound.
As is well known in the science of noise control, sound volume is measured in decibels and frequency is measured in cycles per second. Thus in rating a panel for noise suppression a graph is prepared comparing decibels with cycles per second. Conversation and business machine noises are generally audible within the frequencies of 12S c.p.s. and 140() c.p.s. Conversation noises outside this range may be heard but are not understandable. Since sound transmission loss, at a given 'sound lfrequency is measured in `decibels which are based upon a logarithmic scale, a few decibels of sound transmission loss represents a considerable percentage of noise control. For example, a partition having an A.S.T.M., Sound Transmission Class, rating of 40 decibels transmits Vlomo of the incident sound, a `43 decibel Class Rating transmits 17/20000 of the incident sound, a 46 decibel Class Rating transmits 1%;,0000 of the incident sound, etc. Otherwise stated, for every three decibel rise in sound transmission loss the efficiency of the panel to suppress passage of sound therethrough is doubled. In the case of a movable panel, as a door, the clearance between the periphery of the door and the adjacent door frame opening must be sealed to prevent unrestricted passage of sound.
One object of the invention is to provide a metal door or partition panel of low cost construction having improved restriction of sound passage therethrough.
A further object of the invention is to provide an improved metal door or partition panel resistant to passage of sound therethrough and providing passage of ventilation air therethrough.
A still further object of the invention is to provide a metal door or partition panel having high sound transmission loss and which is lire resistant.
These and other objects of the invention will be made apparent from the following description and the drawing forming a part thereof, wherein:
FIG. l shows in front elevation a door panel providing for ventilation and restriction of passage of sound through the panel;
FIG. ..2 shows a transverse section through FIG. 1 taken on lines IIII;
FIG. 3 shows a transverse section taken on lines III- III of FIG. l;
FIG. 4 shows a vertical section taken on lines IV-IV of FIG. 1;
FIG. 5 shows a section taken on lines V-V of FIG. 1.
Referring now to FIGS. 1 to 5 of the drawing, a further modification of the door panel is shown providing for ventilation through the door panel andsound attenuation. Here the front and back skin plates 45 and 46 are provided with opposing connected flanges 45a and 46a at each vertical edge and each vertical edge is provided with a reinforcing plate 47 and 48. Two vertically extending stiffening -channels 49 are disposed between the skin plates 45 and 46 and extend to adjacent the top and bott-om edges thereof defining the Iwidth of a ventilating louver throat :50. Adjacent the top of the panel in skin plate 45 and adjacent the bottom of the panel in skin plate 46 are rectangular louver openings 51 and 52 extending transversely between stiffening channels 49. Extending transversely between said channels 49 and beneath the louver opening 52 is a channel shaped member 53 having its opposite llanges connected to the skin plates 45, 46 and defining the bottom of the louver throat 5t). Extending vertically from above louver opening 52 in skin plate 46 to the vertical height of stifeners 49 are transverselyV spaced stiffeners 54 each having one ange theerof abutting the skin plate 46 and the other flange spaced inwardly therefrom. Each said stitfener 54 flanges abutting the skin plate 46 being held in engagement therewith by spaced spring clips 55, each clip having one end welded to the skin plate and the opposite end resiliently engaging the stiifener flange. The top of the louver throat 50 is defined by the web of a channel member 56 whose upturned flanges are secured to the skin plates 45, and inner flanges of stiifeners 54. The ends of channel 56 abut and are secured to the webs of stilfeners 49. Secured to stiileners 54 inwardly spaced llanges is an expanded metal plate 57 forming the back wall of louver throat 5t). Plate 57 extends vertically from the top of the louver opening 52 to the web of channel 56 and transversely between stiifeners 49. Upon the inner face of skin plate 45 and extending upwardly from -channel 53 to the -bottom edge of the louver opening 51 are transversely spaced channel stiffeners 59 having one flange abutting and welded to the skin plate 45 and the opposite flange disposed inwardly therefrom. Disposed upon the latter flanges to form the `front wall of the louver throat is an expanded metal plate 5S having its vertical edges secured to the `webs of the stitleners 49 and extending above the channel 53 to the bottom of louver opening 51. The louver openings 51 and 52 are covered by louvers 60 and 61 suitably secured therein. Preferably the plates 57 and 58 may be of flattened expanded metal having `60 percent open area, as shown. IThe louvers 60 and 61 may be of grill type having Si) percent open area as shown.
The hereinbefore described door constructions have as their basic purpose to restrict passage of sound therethrough. In the art this is referred to as structures having large or high soun-d transmission loss. Such doors find uses in not only commercial and industrial structures,
but are also highly desirable in public buildings, apartment buildings, hospitals, residences and, in fact, any structure where noise reduction is a `desirable feature. The `details of construction have been discussed in relation to door panels, however, the same structures are also desirable as xed panels or partitions dividing a given iioor area into rooms.
It is acknowledged that door and partition panels having a high sound transmission loss are not new in the art, especially in industrial buildings and similar establishments. Such prior panel constructions were both bulky, heavy and relatively expensive. Maximum results have previously been obtained by use of multiple doors and panels, also thick concrete and concrete block walls. However, door and wall panels -having high sound transmission loss for use in oiiice buildings, hospitals, apartments, etc. are `desired to be of minimum thickness and of reasonable cost.
The panel constructions hereinbefore described and the results obtained therefrom were based upon a maximum thickness of about 1% inches. The basic structure is of metal and the interior contains materials generally referred to as non-metallic. The panels are described as having front and rear skin plates, but these designations are solely in reference to the drawing since sound= to be excluded, `may impinge upon either face of the panel. For purposes of both economy and convenience the metal portions `of the door are desirably light in weight. For purposes of the drawings the metal members have been shown enlarged. By Way of example and not intending any limitations upon the inventions, the panel metal skin plates and the metal stiifeners therefor may be of 16, 18 and 20 gauge metal.
I claim:
1. In a metalgsound attenuating door panel providing ventilation between opposite faces thereof, in combination (a) spaced front and back skin plates having their horizontal and vertical margins connected to provide an integr-al structure,
(b) a pair of transversely spaced vertical extending members disposed between the said skin plates and defining between t-hem the width of a louvre throat,
(c) a member extending transversely between said vertically extending members adjacent the bottom margin of the panel defining the bottom of said louvre throat,
(d) louvre openings through the front skin plate adjacent the top of the door and through the rear skin plate adjacent ythe bottom of the door connecting with said louvre throat,
(e) plate-like members extending the width of the louvre throat in inwardly spaced relation to cach skin plate defining the thickness of Ithe louvre throat and secured to the first said vertical members,
(f) the plate-like member adjacent the front skin plate terminating at the bottom of the louvre opening therein and the plate-like member adjacent the rear skin plate extending from the top of the louvre opening therein to the top of the louvre throat,
(g) stiffening members extending vertically between the front skin plate and adjacent plate-like member from the bottom of the louvre throat to the bottom ofthe skin plate louvre opening,
(h) stitening members extending vertically between the rear skin plate and adjacent plate-like member from the top of the louvre opening in the rear skin plate to adjacent the top of said panel,
(i) a member extending transversely of the door between said rst-named members defining the width of the throat and closing the top thereof, said transversely extending member being attached to the front skin plate and the adjacent stiiT-eners for the rear skin plate,
(j) louvre members disposed within the plane of the louvre openings in each -skin plate, and
(k) non-continuous sound attenuating material filling the spaces between said skin plates and except within the louvre throat.
2. In a metal sound attenuating door panel construction in combination,
(a) vertically extending spaced front and rear skin plates having their adjacent vertical edges connected to provide an open ended hollow metal structure,
(b) vertically disposed stiffening members spaced transversely between the vertical marginal edges of said skin plates with each said stiffening member secured to the inner faces of each of said skin plates to dene between them a vertically disposed Ventilating louvre throat,
(c) a member extending transversely of said skin plates adjacent each horizontal edge of said panel and between said vertically disposed stiffening members deiining the vertical margins of said Ventilating louvre throat,
(d) an opening through each said skin plate adjacent said transversely extending members connecting said louvre throat with the opposite faces of said door panel,
(e) perforated plate members in spaced relation to said skin plates defining opposite walls of said louvre throat between said skin plate openings and having their vertical marginal edges attached to said vertical stifening members, f
(f) louvre members closing said skin plate louvre openings,
(g) a porous non-continuous sound attenuating material filling the spaces between said skin plates and stiifening members and between said skin plates and perforated louvre lining plates and,
(h) closure members disposed between and secured to said skin plates for enclosing said porous material and dening the top and bottom horizontal edges of said door panel.
References Cited by the Examiner UNITED STATES PATENTS 1,554,395 9/1925 Young 199-46 X 2,350,513 6/1944 Leadbetter 20-35 X 2,836,266 5/ 1958 Leeser 52-404 2,880,471 4/1959 Von Munchhausen 20-35 X 2,948,366 8/ 1960 Kelly et al. 189-46 3,004,641 10/1961 Johnson 52-455 3,061,056 10/1962 Kodaras 52-145 HARRISON R. MOSELEY, Primary Examiner,
KENNETH DOWNEY, Examiner.

Claims (1)

  1. 2. IN A METAL SOUND ATTENUATING DOOR PANEL CONSTRUCTION IN COMBINATION, (A) VERTICALLY EXTENDING SPACED FRONT AND REAR SKIN PLATES HAVING THEIR ADJACENT VERTICAL EDGES CONNECTED TO PROVIDE AN OPEN ENDED HOLLOW METAL STRUCTURE, (B) VERTICALLY DISPOSED STIFFENING MEMBERS SPACED TRANSVERSELY BETWEEN THE VERTICAL MARGINAL EDGES OF SAID SKIN PLATES WITH EACH SAID STIFFENING MEMBER SECURED TO THE INNER FACES OF EACH OF SAID SKIN PLATES TO DEFINE BETWEEN THEM A VERTICALLY DISPOSED VENTILATING LOUVRE THROAT, (C) A MEMBER EXTENDING TRANSVERSELY OF SAID SKIN PLATES ADJACENT EACH HORIZONTAL EDGE OF SAID PANEL AND BETWEEN SAID VERTICALLY DISPOSED STIFFENING MEMBERS DEFINING THE VERTICAL MARGINS OF SAID VENTILATING LOUVRE THROAT, (D) AN OPENING THROUGH EACH SAID SKIN PLATE ADJACENT SAID TRANSVERSELY EXTENDING MEMBERS CONNECTING SAID LOUVRE THROAT WITH THE OPPOSITE FACES OF SAID DOOR PANEL, (E) PERFORATED PLATE MEMBERS IN SPACED RELATION TO SAID SKIN PLATES DEFINING OPPOSITE WALLS OF SAID LOUVRE THROAT BETWEEN SAID SKIN PLATE OPENINGS AND HAVING THEIR VERTICAL MARGINAL EDGES ATTACHED TO SAID VERTICAL STIFFENING MEMBERS, (F) LOUVRE MEMBERS CLOSING SAID SKIN PLATE LOUVRE OPENINGS, (G) A POROUS NON-CONTINUOUS SOUND ATTENUATING MATERIAL FILLING THE SPACES BETWEEN SAID SKIN PLATES AND STIFFENING MEMBERS AND BETWEEN SAID SKIN PLATES AND PERFORATED LOUVRE LINING PLATES AND, (H) CLOSURE MEMBERS DISPOSED BETWEEN AND SECURED TO SAID SKIN PLATES FOR ENCLOSING SAID POROUS MATERIAL AND DEFINING THE TOP AND BOTTOM HORIZONTAL EDGES OF SAID DOOR PANEL.
US495754A 1963-06-07 1965-09-27 Door and panel construction Expired - Lifetime US3295273A (en)

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Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3963094A (en) * 1974-07-11 1976-06-15 Donley, Miller & Nowikas, Inc. Muffler structures
US4042061A (en) * 1975-07-12 1977-08-16 Showa Koji K. K. Cell-box-type noise barrier having large magnitude of transmission loss and noise insulating method
US4621709A (en) * 1985-07-10 1986-11-11 Cal-Wood Door Sound attenuating partitions and acoustical doors
US5297369A (en) * 1993-05-05 1994-03-29 Dickinson Sydney L Building structure with improved soundproofing characteristics
US5371987A (en) * 1992-11-19 1994-12-13 Security Metal Products Corp. Acoustical door
US5417029A (en) * 1993-06-30 1995-05-23 Reese, Jr. John D. Door assembly
US6112496A (en) * 1998-09-25 2000-09-05 Weyerhaeuser And Overly Manufacturing Company Metal and wood door with composite perimeter
US20090020358A1 (en) * 2006-01-18 2009-01-22 Irvin Lee Derks Air treatment and sound reduction system
US20090133957A1 (en) * 2007-11-26 2009-05-28 Robert Lee Owens Sound attenuating air vent
US9109389B1 (en) * 2010-11-23 2015-08-18 Jerry G. Crittenden Hollow core door with internal air flow
US20160232885A1 (en) * 2003-12-22 2016-08-11 Noiseout Inc. Perforation Acoustic Muffler Assembly and Method of Reducing Noise Transmission Through Objects
US9534385B2 (en) * 2014-10-11 2017-01-03 Diehl Comfort Modules GmbH Room delimitation element
US20170022752A1 (en) * 2015-07-24 2017-01-26 Nan Ya Plastics Corporation Soundproof door for use in reduction of sound transmitted from one side of the door to the other side
US10156091B1 (en) * 2010-11-23 2018-12-18 Jerry G. Crittenden Margin air flow door for preventing pressure build up
US10301869B1 (en) * 2010-11-23 2019-05-28 Jerry G. Crittenden Hollow core door for preventing pressure build up having a prefabricated center panel and method of making the door
US10378273B2 (en) 2015-07-24 2019-08-13 Nan Ya Plastics Corporation Soundproof door for use in reduction of sound transmitted from one side of the door to the other side

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1554395A (en) * 1925-09-22 of detroit
US2350513A (en) * 1940-12-30 1944-06-06 Burgess Manning Co Sound barrier wall or door construction
US2836266A (en) * 1953-12-23 1958-05-27 Steelcraft Mfg Company Sheet metal wall panel structure
US2880471A (en) * 1957-02-20 1959-04-07 Munchhausen Heyno Von Sound insulating structures
US2948366A (en) * 1957-06-25 1960-08-09 Fenestra Inc Metal door structure
US3004641A (en) * 1959-01-29 1961-10-17 Robert C Johnson Hollow metal doors
US3061056A (en) * 1959-09-22 1962-10-30 Elof Hansson Inc Louvered door

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1554395A (en) * 1925-09-22 of detroit
US2350513A (en) * 1940-12-30 1944-06-06 Burgess Manning Co Sound barrier wall or door construction
US2836266A (en) * 1953-12-23 1958-05-27 Steelcraft Mfg Company Sheet metal wall panel structure
US2880471A (en) * 1957-02-20 1959-04-07 Munchhausen Heyno Von Sound insulating structures
US2948366A (en) * 1957-06-25 1960-08-09 Fenestra Inc Metal door structure
US3004641A (en) * 1959-01-29 1961-10-17 Robert C Johnson Hollow metal doors
US3061056A (en) * 1959-09-22 1962-10-30 Elof Hansson Inc Louvered door

Cited By (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3963094A (en) * 1974-07-11 1976-06-15 Donley, Miller & Nowikas, Inc. Muffler structures
US4042061A (en) * 1975-07-12 1977-08-16 Showa Koji K. K. Cell-box-type noise barrier having large magnitude of transmission loss and noise insulating method
US4621709A (en) * 1985-07-10 1986-11-11 Cal-Wood Door Sound attenuating partitions and acoustical doors
US5371987A (en) * 1992-11-19 1994-12-13 Security Metal Products Corp. Acoustical door
US5297369A (en) * 1993-05-05 1994-03-29 Dickinson Sydney L Building structure with improved soundproofing characteristics
US5417029A (en) * 1993-06-30 1995-05-23 Reese, Jr. John D. Door assembly
US6112496A (en) * 1998-09-25 2000-09-05 Weyerhaeuser And Overly Manufacturing Company Metal and wood door with composite perimeter
US10490178B2 (en) * 2003-12-22 2019-11-26 Bonnie S. Schnitta Perforation acoustic muffler assembly and method of reducing noise transmission through objects
US20160232885A1 (en) * 2003-12-22 2016-08-11 Noiseout Inc. Perforation Acoustic Muffler Assembly and Method of Reducing Noise Transmission Through Objects
US20090020358A1 (en) * 2006-01-18 2009-01-22 Irvin Lee Derks Air treatment and sound reduction system
US8336672B2 (en) * 2006-01-18 2012-12-25 Bard Manufacturing Company Air treatment and sound reduction system
US20090133957A1 (en) * 2007-11-26 2009-05-28 Robert Lee Owens Sound attenuating air vent
US9493980B1 (en) * 2010-11-23 2016-11-15 Jerry G. Crittenden Stile and rail door with hollow core stiles and rails for perimeter air flow
US10156091B1 (en) * 2010-11-23 2018-12-18 Jerry G. Crittenden Margin air flow door for preventing pressure build up
US10676984B1 (en) * 2010-11-23 2020-06-09 Jerry G. Crittenden Hollow core door for peventing pressure build uphaving a divided non-linear air flowthrough the door
US9719291B1 (en) * 2010-11-23 2017-08-01 Jerry G. Crittenden Hollow core door with internal air flow and sliding panel
US9803417B1 (en) * 2010-11-23 2017-10-31 Jerry G. Crittenden Hollow core door with perimeter air flow and movable damper panels
US10060182B1 (en) * 2010-11-23 2018-08-28 Jerry G. Crittenden Margin air flow doors for preventing pressure build up
US9109389B1 (en) * 2010-11-23 2015-08-18 Jerry G. Crittenden Hollow core door with internal air flow
US10301869B1 (en) * 2010-11-23 2019-05-28 Jerry G. Crittenden Hollow core door for preventing pressure build up having a prefabricated center panel and method of making the door
US10190361B1 (en) * 2010-11-23 2019-01-29 Jerry G. Crittenden Method of controlling a flow of air through a door
US10190360B1 (en) * 2010-11-23 2019-01-29 Jerry G. Crittenden Hollow core door with perimeter air flow and multiple damper panels
US9534385B2 (en) * 2014-10-11 2017-01-03 Diehl Comfort Modules GmbH Room delimitation element
US10378273B2 (en) 2015-07-24 2019-08-13 Nan Ya Plastics Corporation Soundproof door for use in reduction of sound transmitted from one side of the door to the other side
US10113355B2 (en) * 2015-07-24 2018-10-30 Nan Ya Plastics Corporation Soundproof door for use in reduction of sound transmitted from one side of the door to the other side
US20170022752A1 (en) * 2015-07-24 2017-01-26 Nan Ya Plastics Corporation Soundproof door for use in reduction of sound transmitted from one side of the door to the other side

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