вход по аккаунту


Патент USA US3068966

код для вставки
Dec. 18, 1962
Filed Aug. 4, 1960
4 Sheets-Sheet 1
John A. Cooley,
Dec. 18, 1962
Filed Aug. 4, 1960
4 Sheets-Sheet 2
v 12
Dec. 18, 1962
Filed Aug. 4, 1960
4 Sheets-Sheet 3
John A.Cooley,
Dec. 18, 1962
Filed Aug. 4, 1960
4 Sheets-Sheet 4
John A. Cooley,
United States Patent O?? ce
Patented Dec. 18, 1962
sound from one direction, and re?ect it from another
direction, the aforementioned tile may be so treated that
the pyramid faces directed toward the point from which
it is desired to re?ect sound are hard surfaced, while
those oriented toward the direction from which it is
John A. Cooley, 3724 Manor Road, Apt. 1,
Chevy Chase, Md.
Filed Aug. 4, 1960, Ser. No. 47,569
2 Claims. (Cl. 181-—33)
(Granted under Title 35, US. Code (19.52), sec. 266)
desired to absorb sound may be treated to produce a re
silient and sound absorbing surface. In a similar man
The invention described herein may be manufactured
and used by or for the Government, for governmental
purposes, without the payment of any royalty thereon.
This invention relates to acoustic tiles, and more par
ticularly to an improved acoustic tile having light and
sound controlling qualities.
There has always been a demand for superior acoustic
insulation in research laboratories, offices and similar
places. Oftentimes a coincident need has been felt for
an effective means for the control of both light and
acoustic qualities. Good
and auditoriums, coupled
tion, is always a prime
ther, in laboratories and
acoustical qualities in theaters
with a pleasing light distribu
aesthetic consideration. Fur
offices, a good light distribu
ner, it is possible to control light re?ection and absorp
tion by means of light colored and dark colored surface
It should be realized that each tile being of pyramidal
form oifers a number of sides. Each of the sides may be
variously and selectively treated so as to have a num-‘
ber of configurations and combinations of sound absorb
ing, sound re?ecting, light absorbing and light re?ecting
surfaces. By proper choice of these con?gurations on
the sides of the tiles, a wide range of variation may be
obtained in both acoustical and lighting treatment so as
to achieve optimum qualities in a given environment.
This invention will be better understood by reference
to the following description, taken with the drawings, in
tion, as well as controlled acoustics tend to improve
FIGURE 1 is an elevational view of one embodiment
work conditions and increase work output of the per
the invention;
sonnel. Further research into the effects of various com 25
FIGURE 2 is a plan view of the embodiment of FIG
binations of light and sound re?ection and absorption
as a continuing ?eld of investigation.
One manner in which acoustical control is obtained,
URE 1;
FIGURE 3 is a perspective view of one side of a tile
showing an embodiment of the invention;
is through the distribution of acoustical tiles, usually
FIGURE 4 represents a single, detached pyramidal
sound-absorbant, throughout a room in strategic loca
shaped tile;
tions. Re?ection of sound, where desired, is often con
FIGURE 5 shows one example of the treatment ap—
trolled by the introduction of one or more hard wall
plied to the pyramidal shaped tile;
surfaces. Each of these control devices, however, pro
FIGURE 6 shows another example of treatment of
the tile;
FIGURE 7 shows that rotating the pyramid of FIG
URE 6 does not change con?guration;
FIGURES 8 through 10 show various illustrative ex-‘
vides only a partial answer to the total problem, for
exact control to achieve optimum acoustical results is
extremely difficult. When the rare and happy coin
cidence of a perfect acoustical environment occurs, the
room, if a laboratory, is enhanced in value, and if an
auditorium will reward an audience due to the accom 40
amples of the different treatments of the tile surfaces to
achieve various desired acoustical effects; and
distribution without cumbersome re?ectors or an un
positional arrangements of the surfacing treatments on
the tile.
Referring to FIGURES 1 and 3, 30 indicates the base,
plishment of a perfect acoustical environment. The
problems facing the architect and decorator in regard to
light distribution is equally great, for to get correct light
bounded multiplication of light sources is quite difficult.
Therefore it is the purpose of this invention to pro
vide a method and structure for controlling both acous
tics and light distribution.
It is another purpose to provide an improved sound
absorbing structure.
FIGURES 11 through 18 show the possible relative
or support board which bears a number of small py
ramidal structures 32, arranged in rows 34 and columns,
36. The surfaces of the pyramids 32, as shown in FIG
URE 2, are treated according to the desired function
(FIGURES l and 4), with sound absorbent 38, sound
re?ecting 40, light re?ecting 42 or light absorbing 44
It is another purpose to provide a method of produc— 50 surface preparations.
ing an improved sound absorbing structure.
It is a further purpose of this invention to provide a
pleasing and attractive acoustic tile.
The present inventionmay take the form of an acous
tic tile, made from any suitable substance, such as
pressed wood ?bre, cellulose, asbestos, etc. The sur
face of the tile, rather than being relatively smooth, or
simply punctured as found in prior art devices, is pressed,
formed or cut into a number of serried pyramidal or
quasi-pyramidal shapes. The pyramidal shape has been
found to be a singularly e?icient sound absorbent design
due to its large surface area and sound-scattering, an
gled surfaces. The construction of a tile, as described
Any one face of the pyramidal
structures may bear any one or a combination of these
surface preparations on any face. Further various com
binations of light and sound properties may be em
ployed on a single face of each pyramidal structure.
Generally each of the pyramidal structures on the base
30 unit will have their corresponding faces alike in sur
facing and orientation.
The sound and light re?ecting and absorbing surfaces
may be given their special properties by means of paint,
coatings, impregnations, roughing, deposits, carbonizing,
dimpling and other various methods of producing a sur
face of the desired properties. Henceforth all such ?n
ishes possessing the desired properties of light and sound
above, will result in substantially improved acoustical
re?ecting or absorbing on the pyramidal faces will be
qualities in a room; however, it is not the aim of this 65 referred to as “specially treated surfaces,” and a com
invention to merely provide a superior acoustic tile, but
plete tile, with any of these surface conditions will be
to provide a means of controlling both light and sound,
referred to as an “acoustico-illuminative tile.”
through the agency of such a tile.
In operation, the acoustico-illuminative tile will be
It can be appreciated that a hard ?at surface will re
treated to produce the desired combination of properties
?ect sound to a much greater degree than will a resilient,
on its surfaces. For example, suppose a case in which
cellular surface. Therefore, if it is desired to‘absorb
the tile will be used on the ceiling of a small auditorium,
the following analysis might be made. In FIGURE 2,
nations of light and sound absorptive and re?ective prop
consider arrow 54 to indicate the direction of the stage,
erties possible for the pyramidal structures on each tile:
and pyramid 55 be representative of all the pyramids
(1) light absorptive, sound absorptive
on a tile. Supposing, in this case, it is desirable to: (a)
reduce audience noises (from a direction opposite the
stage), (b) give a “live” quality to sound from the stage,
(2) light absorptive, sound re?ective
(3) light re?ective, sound re?ective
(4) light re?ective, sound absorptive
(c) re?ect incident light onto the stage, (a!) keep re
There are, further eight different combinations of rela
?ected light away from the audience, (e) let incident
positional arrangements of treated pyramid surfaces,
light be re?ected toward the side walls to relieve dark
ness without annoying the audience, and (f) absorb 10 as illustrated in FIGURES 11 through 18 inclusive.
FIGURE 11 shows the simplest situation, where only
any echoes coming from the walls in order to control
one face 86 of a pyramid 88 is surfaced with a given
preparation. Up to four possible forms may be had, in
To solve the above problem by conventional means
this case, by simple rotation of the particular determined
would be extremely difficult and expensive, involving a
surface of the pyramid, depending upon the other surfaces
large complex of sound absorbent and re?ecting struc
of the tile. This rotation in space changes the nature of
tures and special lighting. By the utilization of the pres
the tile, in relation to other possible facings on the same
ent invention however, the desired results could be readily
tile. In FIGURE 12, there is shown a pyramid 90 in
attained by installation of an acoustico-illuminative tile
30 (FIGURE 1) having the following con?guration of
specially treated surfaces:
Surface 48 of each pyramidal structure would be sound
absorbent and light absorbent, ?lling the needs set forth in
(a) and (d) above. Surfaces 46 and 50 of each pyrami
dal structure would be sound absorbent and light re?ect
ing to ?ll the needs of (e) and (1‘), while the surface 52
of each structure would be sound and light re?ecting in
order to ?ll the purposes of (b) and (0) above. It can
be seen from this example, therefore, that the subject in
which two adjacent faces 92 are surfaced. Spatial rela
tive rotation of these faces can also effect the con?gura
tion of the tile, as shown in FIGURES 13, 14 and 15.
From these illustrations it can be seen that there are four
relative positions possible to two adjacent faces, unlike
the single face, where relative rotation may produce up to
four variations.
FIGURE 16 shows a case where a
pyramidal structure 96 has two opposing sides 98 which
are surfaced. It logically follows that, with opposing
sides, there are only two possibilities. The ?rst, as shown
in FIGURE 20 and the second as illustrated in FIGURE
vention is one of extreme versatility, capable of being em
17. ‘FIGURE 18 shows the ?nal possibility of a pyrami
ployed in a multitude of situations, and able to solve many
dal structure 100 wherein all sides 102 are surfaced. A
widely varied acoustic problems, some of which were here
case where 3 sides are surfaced is equivalent to the ob
tofore considered nearly impossible of solution. It will
verse of the pyramid shown in FIGURE 11. Thus it can
be understood that the required number of such tiles will
be empirically determined that the number of permuta
be employed to achieve the total desired effect.
tions is 7 S.
Another example of the possible surface treatments is
The manufacture of this tile presents many possibilities
represented by FIGURE 5, where a light re?ective sound
of simpli?ed procedure. Acoustic tiles of the usual per
re?ective surface 60 and three light re?ective sound ab
forated type are gang-drilled by a battery of twist drills.
sorptive surfaces 61, are combined on one pyramid 58.
These twist drills dull readily, and must be replaced often.
Of course, while positional requirements can be varied,
(Some tile materials require replacement for each 100
that is, the position of the surfaces on the tiles in relation
tiles drilled.) Since the tiles of this invention obviously
to each other, the tile’s spatial orientation should also be
eliminate the drilling operation, they may be made more
considered. For example, the pyramid 59 shown in FIG
URE 6, having two light and sound absorptive surfaces 62
and two light re?ective sound re?ective surfaces 60, is not
changed by rotation about the axis of the pyramid, as
shown by the relative positions of the pyramid’s base
corners a, b, c and d in FIGURES 6 and 7, although the
effect while in use would be greatly different.
FIGURES 8, 9 and 10 show various other possibilities,
however, it should be noted that none of these are inter
changeable with each other by rotation about the pyram
idal axis, and that such rotation produces a different con
?guration. FIGURE 8 shows a pyramidal structure 70
having four light absorptive and sound absorptive sides
72, such as might be used in laboratories, eating estab
The tiles may be molded or formed, but the
preferred manner of manufacture is to cut a solid block
of acoustic material with mutually crossing right-angled
cuts into the tile, in order to produce the pyramidal shapes
needed. The cutting may be done by means of a tooth
less blade, which can be sharpened in operation, thus
eliminating shutdowns for drill sharpening and replace
ment. The cutting operation may be accomplished by
producing a number of ?rst parallel angular cuts into but
not through the sheet of material from which the tile is
to be made, and cutting a number of second parallel an
gular cuts, these second cuts making a juncture with the
first cuts at their respective points of deepest penetration,
thus forming a wedge-shaped piece which is removed.
This process is repeated, to make third and fourth oblique
ly angled cuts at right angles to the ?rst and second, thus
lishments and such, to subdue glare and noise from all
angles. FIGURE 9 shows a pyramidal structure 74
having a con?guration in which one side 76 which is light
forming, by removal of the Wedge-shaped pieces resulting
absorptive and sound re?ective, and the other three sides
from the third and fourth cuts, a serried array of pyrami
78 which are light re?ective and sound absorptive. A
dal structures on a base sheet.
tile utilizing the pyramidal structures of FIGURE 9 could
The coating and preparation of the specially treated
be used near a window, where light re?ections should be
surfaces may be accomplished by spraying or painting.
minimized but sound should not be muted, while the re
If sprayed, the spray can be directed from such an angle
mainder of the room should be brightened and sound
as to catch only one face at a time. This technique lends
should be deadened. Such a situation might occur in a 65 itself well to production line continuous manufacture, as
patient observation room of a hospital. FIGURE 10
does the cutting of the tiles. Both sound and light affect
shows yet another possibility in the construction of a tile,
ing preparations may be applied in this manner. These
where two sides 80 of a pyramid 82 are light re?ective,
techniques provide a means of continuously producing
sound absorptive and the other two sides 84 are light and
70 these acoustico-illuminative tiles.
sound absorptive. Such a situation might occur where a
It is understood that the foregoing speci?cation of the
wall would be lightened by the re?ected light, while the
invention, explained in connection with speci?c exempli
rest of the room was darkened, all of the room being
?cations thereof, will suggest many other applications and
modi?cations of the same. It is accordingly desired that,
Thus, it is apparent that there are four different combi
in construing the breadth of the appended claims, they
shall not be limited to the speci?c details shown and de
sound and light re?ecting properties from the controlling
scribed in connection with exempli?cations thereof.
means on the faces turned toward the other direction.
Therefore what is claimed and it is desired to secure by
Letters Patent of the United States is:
1. A tile for controlling both sound and light, said tile
comprising a pyramidal projection having four triangular
faces, two of said faces disposed opposite each other and
having thereon means for absorbing sound and re?ecting
light, the other tWo of said faces disposed opposite each
other with one of said other faces having thereon means 10
for absorbing both sound and light and the second of said
other faces having thereon means for re?ecting both
sound and light.
2. A tile for controlling both sound and light, said tile
comprising a plurality of contiguous pyramidal projec 15
References Cited in the ?le of this patent
MacDonald __________ __ Sept. 29, 1931
Eyring et al. __________ __ Feb. 16, 1932
Solon ________________ __ June 21, 1932
Seiler ________________ __ Mar. 7,
Hayes ______________ __ Feb. 27,
Pennell ______________ __ Aug. 9,
Edmundson _________ __. Nov. 11,
Tanner ______________ __ Mar. 28,
Brewer et al. __________ __ Nov. 7, 1961
tions, each of said projections having four triangular
faces, some faces on said projections turned toward a
France ______________ __ Sept. 18, 1928
Great Britain ________ __ Dec. 10, 1940
common direction with each such face having thereon
France _______________ __ July 4, 1960
means for controlling both sound and light re?ected there 20 1,238,340
from, others of the faces on said projections turned to
ward another common direction with each of said other
“Dark?ex—-A Fibrous Microwave Absorber,” by H. A.
faces having means thereon for controlling both sound
Tanner et al., NRL Report 4137, Naval Research Labora
and light re?ected therefrom, the controlling means on
tory, Washington, DC, dated April 20, 1953, pages 6-8
the faces turned toward one direction having diiferent 25 of particular pertinence.
Без категории
Размер файла
579 Кб
Пожаловаться на содержимое документа