Acoustics – Sound-modifying means – Sound absorbing panels
Reexamination Certificate
2002-07-01
2004-03-02
Nappi, Robert (Department: 2837)
Acoustics
Sound-modifying means
Sound absorbing panels
C181S290000, C181S293000
Reexamination Certificate
active
06698543
ABSTRACT:
BACKGROUND OF THE INVENTION
This invention relates generally to acoustical panels, and more specifically to very structurally stable acoustical panels that may be of significant size and be applied directly to the wall, or actually form the wall panel for a divider, to function dually as a divider, but more importantly, to dampen sound, and lessen the noise reversation of the ambient area.
Numerous types of panels have been available in the art, including acoustical panels, for use for sound absorption purposes. And, there are many panels that have been applied to partitions or dividers, such as the type that are used in business offices, to separate work cubicles from one another, but it does not appear that the combination of these two has ever been made, for functioning as an acoustical wall panel, or partition, much less for a large size acoustical panel that can be applied directly to the wall, also for sound control and absorption purposes.
For example, the MacDonald, U.S. Pat. No. 2,112,631, shows a sound absorbing construction, in this case for use upon the ceiling, which includes units formed of relatively thin gauge sheet material. Then, a layer of sound absorbing material is applied thereto. The sound absorbing material appears to be fibrous, and is actually defined as a hairy or felt-like material. These units are then held in place by a series of furring strips, and attaching flanges, for suspension from the ceiling.
The patent to Kemp, U.S. Pat. No. 3,095,943, shows another acoustical structure. It is once again a ceiling type of installation, comprising a perforated cover or pan, having sound deadening material applied therein, which appears to be of a honeycombed structure, filled in, in its cores, with either asbestos, paper, or other core filling material. Once again, these appear to be ceiling acoustical panels.
The patent to Ball, Jr., U.S. Pat. No. 3,104,731, shows another acoustical ceiling. It includes a series of particularly shaped and configured pans, having a fibrous mat of mineral materials applied therein, and the suspended from a ceiling. The pan is perforated to provide for sound admission through its bottom wall.
The patent to Robinson, U.S. Pat. No. 3,324,967, shows an insulating and acoustical panel structure. This is a snap together type of structure, including a bottom section, that combines by a snap connection with a top section, after the body or batt of fibrous material is applied therein. The fibrous material may be formed for rock wool, or the like, to function as a sound and heat insulating material. Once again, this structure is designed to be adhered or suspended from a ceiling.
The patent to Omholt, et al., U.S. Pat. No. 4,423,573, discloses a wall panel with removable acoustical inserts. These panels are for use as a wall, to absorb the incidence of sound, and to prevent the transmission of sound from one location to another, and are structured from a tubular metal frame, that has applied to it an acoustical insert. The acoustical insert includes, and is fabricated, from a central body portion that may be formed from pressed glass fiber, as noted, and has a series of indentations formed therein, and also includes an outer surface covering formed of a fabric, or other sheet material, as noted. While these devices are generally defined as for use as a partition, it does not appear that they are suggested for application to a wall, as a wall panel.
The patent to Nassof, U.S. Pat. No. 4,611,444, shows a sanitary acoustical ceiling. This type of a ceiling is of a very specific design, including the application of particularly designed metal ceiling panels, that are only perforated along the sides, and have the acoustical insulation material applied therein. These are designed for hospitals, kitchens, and the like, generally areas that must be kept in a sanitary condition.
The patent to Mortimer, U.S. Pat. No. 4,642,951, shows another suspended ceiling tile system. This device is made of a variety of ceiling tiles, structured differently from the current design, and functions for a different purposes.
The patent to Ashton, U.S. Pat. No. 4,706,422, discloses a space divider. This space divider is formed of an outer fabric covering 26, having internal panels forming side walls that have a series of apertures provided through them, and formed having a series of intersecting stiffeners, within them, and in which bats of acoustical insulating material may be applied, when forming the structure.
The patent to Nelson, U.S. Pat. No. 4,964,250, shows a modular acoustical panel and method of making same. While these acoustical panels, as shown therein, may be fabricated of a variety of structures, having layers of insulating material therein, the particular modular acoustical panels as defined in this patent depict panels that are structured quite distinct and different from that of the current invention.
The patent to Capual, U.S. Pat. No. 5,202,174, shows another lay-in ceiling panel construction.
The patent to Caro, et al, U.S. Pat. No. 5,423,151, shows a tackable tile. While these tiles may be used to form walls, as can be noted, the tackable tiles are formed specifically as a tile frame, including a composite tackable member conforming to the perimetric shape of the tile frame, and mounted in its opening, is an acoustical layer of material. This patent does disclose a layer of polymeric material, which is resilient and flexible, but it must also be pierceable, having a layer of acoustic material applied to the rear face, it must be adapted to have a tack inserted from the front face, and which passes into the polymeric material, and into the acoustical layer, apparently to retain the tiles structurally together.
Finally, the patent to Dias, et al., U.S. Pat. No. 5,424,497, shows a sound absorbing wall panel. While this panel is designed for that purpose, for use as a wall panel, and for sound absorbing purposes, its particular structure is entirely distinct from the structured and more simplified acoustical sound panel of this current invention.
SUMMARY OF THE INVENTION
The principal object of this invention is to provide an acoustical wall panel that may be applied directly to the wall, and thereat provide sound absorption attributes that effectively dampen the acoustical reverberations of sound, from the ambient environment. For example, this invention can be applied in auditoriums, terminals, such as airline terminals, offices, restaurants, and other locations where the level of noise from predominantly crowds of people, are otherwise bothersome, or make it difficult to hear, but which can be lessened, to some degree, through the application of panels of this invention.
This invention contemplates the formation of a panel-like structure, which in the preferred embodiment, may be in the range of four feet by eight feet panels, or could be of smaller design, or even larger construction, if desired. Essentially, the essence of the invention is the provision of a base within the formed panel, which can function for sound absorption purposes, to reduce the ambient noise, to the satisfaction of the persons in the vicinity of this acoustical wall panel.
The base structure of this invention includes a sizable sheet of sound absorption material, having structural integrity, and which may be fabricated of fiberglass, although perhaps expanded polystyrene, or other type of porous material, that would have a tendency to absorb sound, may be employed and work just as effectively as the base structure for this invention. The base structure then includes a covering sheet, of durable flexible material, and which may be formed, for example, of a copolymer, such as vinyl, acrylic, polyethylene, or any other type of natural material, such as leather, or synthetic, like a polymer, sheet material, that may be flexibly applied to the surface of the base structure, folded over on the ends or sides, with any remaining flaps tucked in, while the adjacent flanges are also turned down, adhered in place, to form a covering like sheet entirely over the exposed surfa
Denk Paul M.
Golterman & Sabo, Inc.
Nappi Robert
Warren David S.
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