IL22406A

IL22406A - Acoustic panels

Info

Publication number: IL22406A
Application number: IL22406A
Authority: IL
Original assignee: Abciuk & Co Ltd M; Pinhas Abciuk
Priority date: 1964-11-05
Filing date: 1964-11-05
Publication date: 1968-02-26
Also published as: BE702300A; DE1534684B1; US3354595A; GB1084617A

Description

The present invention relates to elements for the construction of acoustic ceilings and more particularly to panels which are suspended below a ceiling of whatever construction and insure improved acoustic conditions in the room so equipped.

It is well known to use ceramic panels which are attached to the ceiling of a room. This arrangement is rather costly both in view of the material used, as well ae in view of certain difficulties in firmly and lastingly attaching ceramic panels to a cast or otherwise constructed ceiling.

It is also known to suspend metal boxes or box-like structures from special holders which are afixed in the ceiling, creating an air space between the built up celling of the room and the lowermost side of the said box-like structures* Also this arrangement has not proved fully satisfactory, probably in view of the fact that the metal boxes or box-like structures tend to vibrate in resonance with acoustic effects in the respective room.

It is the object of the present invention to provide elements for the purpose in view, such elements being made from plastics which is an inexpensive material and from which such elements can be easily produced by extrusion methods. It is a further object of the invention to provide means for quickly, lastingly and securely affixing the said elements in a room to be equipped with a sound absorbing ceiling.

According to the invention the new elements are trough or gutter-like structures having a fiat or slightly curved bottom and two lateral walls* extending substantially normally from the bottom, the said bottom being possibly provided with perforations, one of the said lateral walls having a longitudinal/extending along its upper edge while the other lateral wall has its edge bent over outwardly to form a groove directed toward the bottom, and being so dimensioned as to be adapted to deta^hably engage the bead of a Juxtaposed panel, there being further provided on the rib said other lateral wall* an inwardl directed/extending along or near its upper edge.

The invention further concerns holding arrange-* ments fiffr the said elements.

She invention will now be described with reference to the annexed drawings which illustrate the new elements. Fig. 1 is a fractional perspective view of the new gutter- shaped element. Fig. 2 is an elevational view of two such elements in position below the ceiling of a room* Fig. 3 Is the view of an elemen as shown in Fig. 2 turned through 90°, while Fig. 4 is a springy damp used for suspending the new elements from a ceiling. Fig* 5 shows in elevation two juxtaposed* slightly different gutter-like elements. Fig. 6 illustrates the use of slightly different means for suspending the new elements below a ceiling.

Turning first to Fig, 1 the new element is a gutterlike structure which comprises a lower horizontal wall <¾, a side wall b and a second side wall £♦ The central, horizontal wall ¾ may he provided with perforations or not, S e lateral va b, in Pig. 2 being the left-hand one,, has a thickened edge forming a bead j at the upper* free edge of the said wall* The right-hand l in Fig, 1 namely £ has a bent-over edge e which forms a groove at the outside of wall e the open side of the groove being directed downwardly. The dimensions of the groove f in relation to the bead d are so that whenever a bead §. is made to enter a groove f it is held therein clampingly. Opposite the bent-over edge g at the inside of the element* that is to say at the inner side of the vertical wall £» there Is provided a thoroughgoing rib JJ extending along the whole inner side of the vertical wall e. near the upper edge thereof.

The arrangement of affixin the new elements to a ceiling are illustrated by Pig.2. To a ceiling are affixed a number of timber beams 1» to which are nailed or screwed several profile bars 2 which may be either angles or have a U-profile. These bars or rails 2 may be affixed, as stated by nailing or screwing to the beams 1 or they may be mounted and attached to the cast or other'wise constructed celling by whatever conventional means. The vertical flange of such a rail 2 is engaged by a springy clip designated as a whole by the numeral 5 and which is shown in detail by Pig. 4. This clip comprises a ring-shaped hoop 3a which consists of two or three windings of wire, from the hoop 3a extends a hook-like portion 3b which, when the element 3 is in position is directed downwardly. The element 3 as a whole is set on the flange of a bar 2 by slipping the hoop 3a on such flange by inserting the edge of the flange between two windings of the hoop 3a until the clip has taken hold thereon. An appropriate number of suoh holding clips 3 are placed along the whole length of a rail 2 with their portions 3b extending downwardly. Now, the gutter-shaped elements shown in Fig, 1 and indicated in Fig, 2 by the numeral 4 can be put in place . These elements are assembled by forcing the bent-over edge £ of one element over the bead d of a juxtaposed element whereby the two gutter-shaped elements 4 which are now close to one another will be firmly united. How everyelement can be suspended from several clips 3 by making the hook-shaped part 3j -o every clip 3 engage underneath the rib g of the elements 4. n this way every gutter-shaped element 4 is carried by a number of clips 3 which engage underneath Its rib £. n turn, the next element is caried thereby that its bead d is inserted into the groove f formed by the bentfover edge c of a juxtaposed element and also by a number of hooks or clips 3 engaging the rib g at the opposite edge thereo « It will be seen that in this way a number of gutter-shaped elements which have been inexpensively produced by extrusion can be assembled, being firmly held together and can be quickly suspended from l£ ceiling. In casting or constructing the ceiling the beams 1 may be put in place and affixed in whatever conventional way.

While in the foregoing description elements with a plane bottom have been described* it is also possible* as shown in Fig. 5 to make the bottom of such elements 14 slightly convex. The ceiling of a room where such elements are used will have a olprrugated appearance* Turning now to Fig* 6» here different means for suspending the elements are shown* U-rails 2 are affixed to the built ceiling in whateve conventional way* Gutter-like elements 4 or 14 are suspended from end rails by means of tT-shaped members bent from stiff wire and designated by aumferal 13* Such an element can be placed straddlingly over a rail 2 with its legs extending downwardly. These legs have their free ends bent over to form hooks 13a which engage the rib £.

It has been found that the new elements are of very great efficiency acting sound deadening to a sufficient degree, they do not vibrate in resonance with Bounds produced in the room in question; such elements are of light weight and can be suspended easily from the clips described.

It is also of importance that such elements can be produced in whatever color without any heed for providing whitewash for being painted when in position and furthermore the elements feeing made of plastic can be cleaned easily and quickly.

Whenever it ie necessary such elements can be removed and reinstated within very short time. T is might; become necessary sometimes in order to provide electric conduits or the like more which. are effectively hidden by the ew acoustic panels♦.

Claims

1. QF„_— —- BATING HOW particularly described and ascertained the nature of our said invention and in what manner the same is to be perormed* we declare that what we claim 1st- 1. A panel for providing an acoustically acting covering on ceilings being a trough or gutter-like structure having a flat or slightly curved bottom and two lateral walls* extending substantially normally from the bottom, the said bottom being possibly provided with perforations* one of the said lateral walls having a longitudinal bead extending along its upper edge while the other lateral wall has its edge bent over outwardly to orm a groove directed toward the bottom* and so dimensioned as to be adapted to detaohably engage the bead of a juxtaposed panel* there being further provided on the said other lateral wall an inwardly directed rib extending along or near to its upper edge*

2. Panel as claimed in Claim 1* characterized thereby that its bottom is plane at its lower side*

3. Panel as claimed in Claim 1* characterized thereby that its bottom is convex at its lower side*

4. * A dip for affixing panels according to Claim 1* to a celling* comprising a length of ire formed into a hoop comprising two or more windings of wire* the free end of the length of wire extending from the hoop and forming a hook which is designed to engage the said inwardly directed rib of the panel*

5. Ceiling whenever equipped with elements as claimed in Claim 1. DATED THIS 20th day of October 196