EP4127346B1 - A rail for a false ceiling comprising dilatation absorbers - Google Patents

A rail for a false ceiling comprising dilatation absorbers Download PDF

Info

Publication number
EP4127346B1
EP4127346B1 EP21717146.1A EP21717146A EP4127346B1 EP 4127346 B1 EP4127346 B1 EP 4127346B1 EP 21717146 A EP21717146 A EP 21717146A EP 4127346 B1 EP4127346 B1 EP 4127346B1
Authority
EP
European Patent Office
Prior art keywords
rail
rail according
web
compressive force
edges
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP21717146.1A
Other languages
German (de)
French (fr)
Other versions
EP4127346C0 (en
EP4127346A1 (en
Inventor
Maxime LEFRANC
Robin Czyzewicz
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Saint Gobain Placo SAS
Original Assignee
Saint Gobain Placo SAS
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Saint Gobain Placo SAS filed Critical Saint Gobain Placo SAS
Publication of EP4127346A1 publication Critical patent/EP4127346A1/en
Application granted granted Critical
Publication of EP4127346C0 publication Critical patent/EP4127346C0/en
Publication of EP4127346B1 publication Critical patent/EP4127346B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B9/00—Ceilings; Construction of ceilings, e.g. false ceilings; Ceiling construction with regard to insulation
    • E04B9/06—Ceilings; Construction of ceilings, e.g. false ceilings; Ceiling construction with regard to insulation characterised by constructional features of the supporting construction, e.g. cross section or material of framework members
    • E04B9/08—Ceilings; Construction of ceilings, e.g. false ceilings; Ceiling construction with regard to insulation characterised by constructional features of the supporting construction, e.g. cross section or material of framework members having the capability of expansion, e.g. in case of fire
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B9/00—Ceilings; Construction of ceilings, e.g. false ceilings; Ceiling construction with regard to insulation
    • E04B9/06—Ceilings; Construction of ceilings, e.g. false ceilings; Ceiling construction with regard to insulation characterised by constructional features of the supporting construction, e.g. cross section or material of framework members
    • E04B9/065—Ceilings; Construction of ceilings, e.g. false ceilings; Ceiling construction with regard to insulation characterised by constructional features of the supporting construction, e.g. cross section or material of framework members comprising supporting beams having a folded cross-section
    • E04B9/067—Ceilings; Construction of ceilings, e.g. false ceilings; Ceiling construction with regard to insulation characterised by constructional features of the supporting construction, e.g. cross section or material of framework members comprising supporting beams having a folded cross-section with inverted T-shaped cross-section
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B9/00—Ceilings; Construction of ceilings, e.g. false ceilings; Ceiling construction with regard to insulation
    • E04B9/06—Ceilings; Construction of ceilings, e.g. false ceilings; Ceiling construction with regard to insulation characterised by constructional features of the supporting construction, e.g. cross section or material of framework members
    • E04B9/065—Ceilings; Construction of ceilings, e.g. false ceilings; Ceiling construction with regard to insulation characterised by constructional features of the supporting construction, e.g. cross section or material of framework members comprising supporting beams having a folded cross-section
    • E04B9/067—Ceilings; Construction of ceilings, e.g. false ceilings; Ceiling construction with regard to insulation characterised by constructional features of the supporting construction, e.g. cross section or material of framework members comprising supporting beams having a folded cross-section with inverted T-shaped cross-section
    • E04B9/068—Ceilings; Construction of ceilings, e.g. false ceilings; Ceiling construction with regard to insulation characterised by constructional features of the supporting construction, e.g. cross section or material of framework members comprising supporting beams having a folded cross-section with inverted T-shaped cross-section with double web

Definitions

  • the present invention relates to a new design of suspended ceiling rails comprising expansion absorbers.
  • Suspended ceilings are typically composed of panels supported by a rectangular mesh of rails.
  • the rails have an inverted T-shaped profile, comprising a vertical core, two branches of the T forming a sole capable of supporting the panels, and a bead at the upper part of the core.
  • a decorative strip is positioned under the sole and wrapped around the longitudinal edges of the sole.
  • the panels can be acoustic tiles.
  • the suspended ceiling is typically supported by a rectangular mesh of rails: long rails, called main rails, arranged parallel to each other and resting at their ends on angles secured to the walls, constitute the primary structure of the mesh.
  • Shorter rails, called transverse rails arranged parallel to each other, but in the direction orthogonal to the primary structure, connect the primary rails to each other.
  • the days of the rectangular mesh thus formed, and the size of which is fixed by the length and spacing of the transverse rails are adapted to the size of the panels which simply rest on the soles of the rails.
  • This type of rail is well known, especially from documents BE 903 188 , EP 1 167 649 B1 , EP 1 452 658 B1 , US 4,893,444 , US 5,349,803 And FR 2704016 .
  • the rails In the event of a real fire or during fire certification tests, the rails, exposed to high temperature rises (+500°C at 5min, +650°C at 10min, +850°C at 30min and 950°C at 60min) expand and lengthen. Generally fixed at their ends or abutting against the side walls, the expansion of the longest rails is blocked, which causes, from the first minutes of the fire, their buckling out of the plane, distortions in the plane, the fall slabs and the breakdown of fire insulation. To avoid these deformations and increase the fire stability of the acoustic ceiling, areas capable of absorbing expansion are provided in the rails. These zones or expansion absorbers are portions of rail with a specific geometry, capable of deforming under the effect of the compressive force due to thermal expansion and thus maintaining minimum distortion in the rail.
  • the document FR 2704016 describes a ceiling rail having a specially configured expansion section. It is made up of cuts and punctures, offset on the two adjacent parts of the central rib and the upper bead.
  • expansion absorbers which each have two cutouts, one in the bead, the other in the core.
  • US 4,893,444 describes a rail comprising an expansion absorber consisting of a large opening 40.
  • the opening has a length greater than the height of the rail which greatly reduces the carrying load of the rail.
  • the absorber causes a stall, that is to say a loss of alignment of the profile.
  • the rails available on the market generally have a single expansion absorber along their length.
  • the expansion of the rail can be of the order of 5 mm/m, a single absorber must then absorb several centimeters of elongation.
  • the object of the present invention is to provide ceiling rails which include at least one expansion absorber of a new design such that the rails can absorb expansion while maintaining the integrity of the ceiling, such that the Ceiling panels do not fall during a fire.
  • one of the aims of the present invention is to provide ceiling rails which include several expansion absorbers.
  • One of the aims of the present invention is to provide rails which retain a significant load bearing despite the presence of one or more expansion absorbers along their length.
  • One of the aims of the present invention is to provide rails which can include several expansion absorbers such that each of the absorbers absorbs part of the elongation of the rail and
  • the slots comprise a horizontal part and a vertical part. Strips of material capable of folding are thus delimited.
  • the slots extend obliquely from the base of the edges of the opening towards the zones capable of forming a folding line.
  • the opening extends at its upper part to a thin strip of material capable of deforming, under the effect of a longitudinal compressive force, forming a bridge.
  • this strip of material capable of deforming has a central notch defining a fold line in the upper part of the bulb.
  • the upper part of the bulb has a cutout; the main opening extending at its upper part to a segment of intact material between the main opening and the cutout of the bulb; each segment of intact material of the bulb being able to deform laterally under the effect of a longitudinal compressive force;
  • the core may include an extra thickness stiffening the substantially vertical edges of the main opening.
  • the ratio of the L2/L1 distances is greater than 2, preferably greater than 4.
  • the ratio of the distances L2/L3 is preferably between 4 and 9, and more preferably between 5 and 8.
  • the L1/Ht ratio is between 0.05 and 0.8, preferably between 0.1 and 0.5.
  • the two strips of material capable of folding have a height H2, the H2/Hb ratio being between 0.02 and 0.4, preferably between 0.05 and 0.2.
  • the rail according to the invention may comprise several expansion absorbers arranged along its length.
  • THE fig. 1 to 4 illustrate a rail 1, according to a first embodiment, whose profile is an inverted T, comprising a central core 2 arranged vertically. At its lower end, the branches of the T form a sole 3 capable of supporting ceiling panels (not shown). The upper part of the core is surmounted by a bulb 4.
  • the profile is made from a metal plate or steel sheet, a alone. The core 2 therefore consists of a double thickness of the starting plate.
  • An expansion absorber is shown in fig. 1 And 3 . It consists of a main opening 5 provided through the two thicknesses of the core 2. It extends at its upper part substantially to the lower part of the bulb 4 and at its lower part to the sole 3 The opening 5 has two vertical edges 6a and 6b, separated by a distance L1. The opening draws a V-shaped notch 7 in its lower part.
  • the expansion absorber also has two slots provided in the two thicknesses of the core 2, on either side of the opening 5.
  • the slots have a horizontal part 8a, 8b, extending over a total distance L2 and a vertical part 9a and 9b connecting the distal end of the slot to the sole 3.
  • the remaining distance between the lower end of the vertical slots 9a and 9b and the sole 3 is of the same order of magnitude as the thickness of the steel sheet constituting the rail.
  • the slots delimit in the core 2, two strips of material 10a and 10b on either side of the notch 7 and above the sole 3.
  • the slots delimit at their distal end a point of bending of the sole when the rail is subjected to a longitudinal compressive force.
  • the slots can extend obliquely from the main opening 5 to the sole 3.
  • the expansion absorber also includes a recess 11 in the upper part of the bulb 4 so as to delimit two strips of material 12a and 12b capable of buckling laterally when the rail is subjected to a longitudinal compressive force.
  • THE fig. 2 And 4 illustrate the rail 1 subjected to a longitudinal compressive force.
  • the sole 3 and the strips of material 10a and 10b flex downwards from the slots 9a and 9b, forming a fold line 13 under the notch 7.
  • the strips of material 12a and 12b of bulb 4 deviate laterally and the edges 6a and 6b of the opening 5 come together.
  • the strips of material 12a and 12b have a length L3.
  • THE fig. 3 and 4 represent the same part of rail 1 equipped with an absorber, in front view.
  • the distances L 1 have been represented, between the two edges 6a and 6b and the distance L 2 between the distal ends of the horizontal parts 8a and 8b of the slots.
  • the distance L2 defines the length of the sole which will bend under the compressive force.
  • the distance L3 defines the length of the strips of material 12a and 12b of the bulb 4, capable of buckling when the rail is subjected to a longitudinal compressive force.
  • the distance L2 is greater than the distance L1.
  • L2 is approximately 14 times larger than L1.
  • L1 has no effect on the load bearing.
  • L1 can be determined according to the desired fire resistance and the number of absorbers arranged on the same rail.
  • the slots 8a, 9a and 8b, 9b of the absorber according to the present invention make it possible to maximize the carrying load of the rail and force the two ends of the rail to be maintained in an aligned plane, during expansion of the rail.
  • Ht is the total height of the profile.
  • Hb is the height of the soul. In the example shown, Ht is approximately 37 mm and Hb is approximately 25 mm.
  • H1 is the height of the part of the vertical edges 6a and 6b located above the slots 8a, 8b. In the example shown, H1 is approximately half the height of the web Hb. The greater H1, the more the force of resistance to compression increases, which prevents all the expansion from being absorbed by a single absorber.
  • H2 is the height of bands 10a and 10b. In the example illustrated, it is one tenth of Hb.
  • H3 is the height of the strips of material 12a and 12b of bulb 4. In the example illustrated, H3 represents eight tenths of the height of bulb 4 (Ht-Hb).
  • THE fig. 5 and 6 illustrate a second embodiment.
  • the expansion absorber also consists of a main opening 50 provided through the two thicknesses of the core 2. It also extends in its lower part up to the sole 3, also drawing a notch 7 in the shape of a V, but at its upper part, the opening 50 extends substantially to the upper part of the bulb 4, leaving only a thin strip of material 20. So that the strip of material 20 is able to buckle towards the top when the rail is subjected to a longitudinal compressive force, it has a notch 21 in the shape of an inverted V. This notch 21 thins the strip of material 20 at its central part to form a folding zone 22 which rises when the rail is subjected to a longitudinal compressive force.
  • the opening 50 also includes two vertical edges 60a and 60b, spaced a distance L1 apart.
  • the expansion absorber also includes the same slots 8a, 9a, 8b, 9b as the absorber illustrated in fig. 1 to 4 .
  • Ht, Hb, H1, L1, L2 and L3 are substantially the same as for the expansion absorber illustrated in fig. 1 to 4 .

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Building Environments (AREA)

Description

La présente invention concerne un nouveau design de rails pour plafond suspendu comportant des absorbeurs de dilatation.The present invention relates to a new design of suspended ceiling rails comprising expansion absorbers.

Les plafonds suspendus sont typiquement composés de panneaux supportés par un maillage rectangulaire de rails. Les rails ont un profil en forme de T inversé, comportant une âme verticale, deux branches du T formant une semelle apte à supporter les panneaux, et un bourrelet à la partie supérieure de l'âme. Une bandelette décorative est positionnée sous la semelle et enroulée sur les bords longitudinaux de la semelle. Les panneaux peuvent être des dalles acoustiques. Le plafond suspendu est typiquement supporté par un maillage rectangulaire de rail : des rails longs, dits principaux, disposés parallèlement les uns aux autres et reposant à leur extrémités sur des cornières solidaires des murs, constituent la structure primaire du maillage. Des rails plus courts, dits transverses, disposés parallèlement les uns aux autres, mais dans la direction orthogonale à la structure primaire, relient les rails primaires entre eux. Les jours du maillage rectangulaire ainsi formé, et dont la taille est fixée par la longueur et l'espacement des rails transverses, sont adaptés à la taille des panneaux qui reposent simplement sur les semelles des rails.Suspended ceilings are typically composed of panels supported by a rectangular mesh of rails. The rails have an inverted T-shaped profile, comprising a vertical core, two branches of the T forming a sole capable of supporting the panels, and a bead at the upper part of the core. A decorative strip is positioned under the sole and wrapped around the longitudinal edges of the sole. The panels can be acoustic tiles. The suspended ceiling is typically supported by a rectangular mesh of rails: long rails, called main rails, arranged parallel to each other and resting at their ends on angles secured to the walls, constitute the primary structure of the mesh. Shorter rails, called transverse rails, arranged parallel to each other, but in the direction orthogonal to the primary structure, connect the primary rails to each other. The days of the rectangular mesh thus formed, and the size of which is fixed by the length and spacing of the transverse rails, are adapted to the size of the panels which simply rest on the soles of the rails.

Ce type de rail est bien connu, en particulier des documents BE 903 188 , EP 1 167 649 B1 , EP 1 452 658 B1 , US 4,893,444 , US 5,349,803 et FR 2704016 .This type of rail is well known, especially from documents BE 903 188 , EP 1 167 649 B1 , EP 1 452 658 B1 , US 4,893,444 , US 5,349,803 And FR 2704016 .

En cas d'incendie réel ou lors des tests de certification feu, les rails, exposés à de fortes élévations de température (+500°C à 5min, +650°C à 10min, +850°C à 30min et 950°C à 60min) se dilatent et s'allongent. Généralement fixés à leurs extrémités ou en butée contre les murs latéraux, la dilatation des rails les plus longs est bloquée, ce qui cause, dès les premières minutes de l'incendie, leur flambage hors du plan, des distorsions dans le plan, la chute des dalles et la rupture d'isolation feu. Pour éviter ces déformations et accroitre la stabilité au feu du plafond acoustique, des zones capables d'absorber la dilatation sont prévues dans les rails. Ces zones ou absorbeurs de dilatation sont des portions de rail avec une géométrie spécifique, capables de se déformer sous l'effet de la force de compression due à la dilatation thermique et de maintenir ainsi une distorsion minimum dans le rail.In the event of a real fire or during fire certification tests, the rails, exposed to high temperature rises (+500°C at 5min, +650°C at 10min, +850°C at 30min and 950°C at 60min) expand and lengthen. Generally fixed at their ends or abutting against the side walls, the expansion of the longest rails is blocked, which causes, from the first minutes of the fire, their buckling out of the plane, distortions in the plane, the fall slabs and the breakdown of fire insulation. To avoid these deformations and increase the fire stability of the acoustic ceiling, areas capable of absorbing expansion are provided in the rails. These zones or expansion absorbers are portions of rail with a specific geometry, capable of deforming under the effect of the compressive force due to thermal expansion and thus maintaining minimum distortion in the rail.

Le document FR 2704016 décrit un rail de plafond comportant une section de dilatation à configuration particulière. Elle est constituée de découpes et de crevés, décalés sur les deux parties adjacentes de la nervure centrale et du bourrelet supérieur.The document FR 2704016 describes a ceiling rail having a specially configured expansion section. It is made up of cuts and punctures, offset on the two adjacent parts of the central rib and the upper bead.

Le document EP 1 167 649 décrit des absorbeurs de dilatation qui comportent chacun deux découpes, l'une dans le bourrelet, l'autre dans l'âme.The document EP 1 167 649 describes expansion absorbers which each have two cutouts, one in the bead, the other in the core.

Un des inconvénients des absorbeurs de dilatation de l'état de la technique est qu'ils affaiblissent fortement la capacité portante des rails, ou ils nécessitent des raidisseurs qui complexifient fortement la fabrication des rails.One of the disadvantages of the expansion absorbers of the state of the art is that they greatly weaken the bearing capacity of the rails, or they require stiffeners which greatly complicate the manufacture of the rails.

US 4,893,444 décrit un rail comportant un absorbeur de dilation constitué d'une grande ouverture 40. L'ouverture a une longueur plus importante que la hauteur du rail ce qui diminue fortement la charge portante du rail. De plus, lors de la dilatation du rail, l'absorbeur provoque un décrochage, c'est-à-dire une perte d'alignement du profil. US 4,893,444 describes a rail comprising an expansion absorber consisting of a large opening 40. The opening has a length greater than the height of the rail which greatly reduces the carrying load of the rail. In addition, during the expansion of the rail, the absorber causes a stall, that is to say a loss of alignment of the profile.

Un autre inconvénient des absorbeurs de dilatation de l'état de la technique est que, soumis aux efforts de compression, leur déformation se produise parfois de manière incontrôlée et que cette déformation déstabilise les dalles.Another disadvantage of expansion absorbers of the state of the art is that, subjected to compressive forces, their deformation sometimes occurs in an uncontrolled manner and this deformation destabilizes the slabs.

Les rails disponibles sur le marché comportent généralement un seul absorbeur de dilatation sur leur longueur. La dilatation du rail pouvant être de l'ordre de 5 mm/m, un seul absorbeur doit alors absorber plusieurs centimètres d'élongation. L'occurrence de déformations de compression de large amplitude, localisées en un seul point du plafond, génère des distorsions du maillage rectangulaire et augmente les risques de chute de dalles.The rails available on the market generally have a single expansion absorber along their length. The expansion of the rail can be of the order of 5 mm/m, a single absorber must then absorb several centimeters of elongation. The occurrence of large amplitude compressive deformations, located at a single point on the ceiling, generates distortions of the rectangular mesh and increases the risk of slabs falling.

Le but de la présente invention est de fournir des rails de plafond qui comportent au moins un absorbeurs de dilatation d'un nouveau design de telle sorte que les rails puissent absorber une dilation tout en conservant l'intégrité du plafond, de telle sorte que les panneaux de plafond ne tombent pas lors d'un incendie.The object of the present invention is to provide ceiling rails which include at least one expansion absorber of a new design such that the rails can absorb expansion while maintaining the integrity of the ceiling, such that the Ceiling panels do not fall during a fire.

En particulier, un des buts de la présente invention est de fournir des rails de plafond qui comportent plusieurs absorbeurs de dilatation.In particular, one of the aims of the present invention is to provide ceiling rails which include several expansion absorbers.

Un des buts de la présente invention est de fournir des rails qui conservent une charge portante importante malgré la présence de un ou plusieurs absorbeurs de dilatation sur leur longueur.One of the aims of the present invention is to provide rails which retain a significant load bearing despite the presence of one or more expansion absorbers along their length.

Un des buts de la présente invention est de fournir des rails qui puissent comporter plusieurs absorbeurs de dilation de telle sorte que chacun des absorbeurs absorbe une partie de l'élongation du rail etOne of the aims of the present invention is to provide rails which can include several expansion absorbers such that each of the absorbers absorbs part of the elongation of the rail and

La présente invention a donc pour objet un rail pour support de panneaux formant un plafond suspendu, ledit rail présentant une section transversale en forme de T inversé et présentant une hauteur Ht, le rail comportant :

  • une âme verticale s'étendant d'une extrémité inférieure à une extrémité supérieure,
  • des extensions horizontales formant une semelle, apte à supporter les panneaux, disposées à l'extrémité inférieure de l'âme,
  • un bulbe disposé au sommet de l'âme,
  • ledit rail comportant au moins un absorbeur de dilatation ;
  • ledit absorbeur de dilatation comportant au moins :
    • une ouverture principale comportant 2 bords sensiblement verticaux s'étendant dans l'âme verticale, les 2 bords étant distants d'une longueur L1 lorsque le rail n'est pas soumis à une force de compression longitudinale, les 2 bords étant alignés de manière à former une butée l'un contre l'autre, lorsque le rail est soumis à une force de compression longitudinale suffisante ;
  • ladite ouverture principale s'étendant à la partie inférieure jusqu'à une zone de matière apte à former une ligne de pliage lorsque le rail est soumis à une force de compression longitudinale ;
    • deux fentes s'étendant chacune de part et d'autre de l'ouverture principale sur une longueur totale L2 supérieure à L1, les deux fentes délimitant avec la semelle, deux bandes de matière aptes à plier,
  • les deux bords sensiblement verticaux s'étendant sur une hauteur H1 représentant entre 0.3 et 0.8 fois la hauteur Hb de l'âme du profilé, de préférence entre 0,4 et 0,8 fois la hauteur Hb de l'âme.
The present invention therefore relates to a rail for supporting panels forming a suspended ceiling, said rail having a cross section in the shape of an inverted T and having a height Ht, the rail comprising:
  • a vertical core extending from a lower end to an upper end,
  • horizontal extensions forming a sole, capable of supporting the panels, arranged at the lower end of the core,
  • a bulb placed at the top of the soul,
  • said rail comprising at least one expansion absorber;
  • said expansion absorber comprising at least:
    • a main opening comprising 2 substantially vertical edges extending in the vertical core, the 2 edges being spaced apart by a length L1 when the rail is not subjected to a longitudinal compressive force, the 2 edges being aligned so as to form an abutment against each other, when the rail is subjected to a sufficient longitudinal compressive force;
  • said main opening extending at the lower part to a zone of material capable of forming a folding line when the rail is subjected to a longitudinal compressive force;
    • two slots each extending on either side of the main opening over a total length L2 greater than L1, the two slots delimiting with the sole, two strips of material capable of folding,
  • the two substantially vertical edges extending over a height H1 representing between 0.3 and 0.8 times the height Hb of the core of the profile, preferably between 0.4 and 0.8 times the height Hb of the core.

Suivant un premier mode de réalisation du rail selon l'invention, les fentes comportent une partie horizontale et une partie verticale. Des bandes de matière apte à plier sont ainsi délimitées.According to a first embodiment of the rail according to the invention, the slots comprise a horizontal part and a vertical part. Strips of material capable of folding are thus delimited.

Suivant un autre mode de réalisation du rail, les fentes s'étendent obliquement de la base des bords de l'ouverture vers les zones aptes à former une ligne de pliage.According to another embodiment of the rail, the slots extend obliquely from the base of the edges of the opening towards the zones capable of forming a folding line.

Suivant un certain mode de réalisation, l'ouverture s'étend à sa partie supérieure jusqu'à une fine bande de matière apte à se déformer, sous l'effet d'une force de compression longitudinale, en formant un pont.According to a certain embodiment, the opening extends at its upper part to a thin strip of material capable of deforming, under the effect of a longitudinal compressive force, forming a bridge.

En particulier, cette bande de matière apte à se déformer comporte une entaille centrale définissant une ligne de pliage dans la partie supérieure du bulbe.In particular, this strip of material capable of deforming has a central notch defining a fold line in the upper part of the bulb.

Suivant un autre mode de réalisation, la partie supérieure du bulbe comporte une découpe ; l'ouverture principale s'étendant à sa partie supérieure jusqu'à un segment de matière intacte compris entre l'ouverture principale et la découpe du bulbe; chaque segment de matière intacte du bulbe étant apte à se déformer latéralement sous l'effet d'une force de compression longitudinale ;
Avantageusement l'âme peut comporter une surépaisseur rigidifiant les bords sensiblement verticaux de l'ouverture principale.According to another embodiment, the upper part of the bulb has a cutout; the main opening extending at its upper part to a segment of intact material between the main opening and the cutout of the bulb; each segment of intact material of the bulb being able to deform laterally under the effect of a longitudinal compressive force;
Advantageously, the core may include an extra thickness stiffening the substantially vertical edges of the main opening.

D'autres surépaisseurs peuvent être ajoutées, par exemple au niveau des fentes.Other excess thicknesses can be added, for example at the level of the slots.

En particulier, le rapport des distances L2/L1 est supérieur à 2, de préférence supérieur à 4.In particular, the ratio of the L2/L1 distances is greater than 2, preferably greater than 4.

Le rapport des distances L2/L3 est, de préférence compris entre 4 et 9, et de manière encore préférée entre 5 et 8.The ratio of the distances L2/L3 is preferably between 4 and 9, and more preferably between 5 and 8.

En particulier le rapport L1/Ht est compris entre 0.05 et 0.8, de préférence entre 0.1 et 0.5.In particular, the L1/Ht ratio is between 0.05 and 0.8, preferably between 0.1 and 0.5.

Avantageusement, les deux bandes de matière aptes à plier ont une hauteur H2, le rapport H2/Hb étant compris entre 0.02 et 0.4, de préférence entre 0.05 et 0.2.Advantageously, the two strips of material capable of folding have a height H2, the H2/Hb ratio being between 0.02 and 0.4, preferably between 0.05 and 0.2.

D'une manière particulière, le rail selon l'invention peut comporter plusieurs absorbeurs de dilatation disposés sur sa longueur.In a particular manner, the rail according to the invention may comprise several expansion absorbers arranged along its length.

Dans un mode de réalisation préféré de la présente invention,In a preferred embodiment of the present invention,

L'invention est à présent illustrée en référence aux figures, dans lesquelles :

  • La Figure 1 [Fig. 1] montre une vue en perspective d'une partie d'un rail comportant un absorbeur de dilatation, selon un premier mode d'exécution ;
  • La Figure 2 [Fig. 2] montre la même vue en perspective lorsque le rail est soumis à une force de compression longitudinale ;
  • La Figure 3 [Fig. 3] montre une vue de face du rail non comprimé ;
  • La Figure 4 [Fig. 4] montre une vue de face du rail soumis à une force de compression longitudinale ;
  • La Figure 5 [Fig. 5] montre une vue de face d'une partie d'un rail comportant un absorbeur de dilatation, selon un deuxième mode d'exécution ;
  • La Figure 6 [Fig. 6] montre une vue de face du même rail qu'à la fig. 5, soumis à une force de compression longitudinale.
The invention is now illustrated with reference to the figures, in which:
  • There Figure 1 [Fig. 1 ] shows a perspective view of a part of a rail comprising an expansion absorber, according to a first embodiment;
  • There Figure 2 [Fig. 2 ] shows the same perspective view when the rail is subjected to a longitudinal compressive force;
  • There Figure 3 [Fig. 3 ] shows a front view of the uncompressed rail;
  • There Figure 4 [Fig. 4 ] shows a front view of the rail subjected to a longitudinal compressive force;
  • There Figure 5 [Fig. 5 ] shows a front view of a part of a rail comprising an expansion absorber, according to a second embodiment;
  • There Figure 6 [Fig. 6 ] shows a front view of the same rail as in fig. 5 , subjected to a longitudinal compressive force.

Les fig. 1 à 4 illustrent un rail 1, selon un premier mode de réalisation, dont le profil est un T inversé, comportant une âme centrale 2 disposée verticalement. A son extrémité inférieure, les branches du T forment une semelle 3 apte à supporter des panneaux de plafond (non représentés). La partie supérieure de l'âme est surmontée d'un bulbe 4. Le profilé est réalisé au départ d'une plaque métallique ou feuille d'acier, d'un seul tenant. L'âme 2 est donc constituée d'une double épaisseur de la plaque de départ.THE fig. 1 to 4 illustrate a rail 1, according to a first embodiment, whose profile is an inverted T, comprising a central core 2 arranged vertically. At its lower end, the branches of the T form a sole 3 capable of supporting ceiling panels (not shown). The upper part of the core is surmounted by a bulb 4. The profile is made from a metal plate or steel sheet, a alone. The core 2 therefore consists of a double thickness of the starting plate.

Un absorbeur de dilatation est illustré aux fig. 1 et 3. Il est constitué d'une ouverture principale 5 ménagée au travers des deux épaisseurs de l'âme 2. Elle s'étend à sa partie supérieure sensiblement jusqu'à la partie inférieure du bulbe 4 et à sa partie inférieure jusqu'à la semelle 3. L'ouverture 5 comporte deux bords verticaux 6a et 6b, distants d'une distance L1. L'ouverture dessine à sa partie inférieure une encoche 7 en forme de V.An expansion absorber is shown in fig. 1 And 3 . It consists of a main opening 5 provided through the two thicknesses of the core 2. It extends at its upper part substantially to the lower part of the bulb 4 and at its lower part to the sole 3 The opening 5 has two vertical edges 6a and 6b, separated by a distance L1. The opening draws a V-shaped notch 7 in its lower part.

L'absorbeur de dilatation comporte encore deux fentes ménagées dans les deux épaisseurs de l'âme 2, de part et d'autre de l'ouverture 5. Dans l'exemple illustré aux fig. 1 à 4, les fentes ont une partie horizontale 8a, 8b, s'étendant sur une distance totale L2 et une partie verticale 9a et 9b reliant l'extrémité distale de la fente à la semelle 3. La distance restante entre l'extrémité inférieure des fentes verticales 9a et 9b et la semelle 3 est du même ordre de grandeur que l'épaisseur de la feuille d'acier constituant le rail.The expansion absorber also has two slots provided in the two thicknesses of the core 2, on either side of the opening 5. In the example illustrated in fig. 1 to 4 , the slots have a horizontal part 8a, 8b, extending over a total distance L2 and a vertical part 9a and 9b connecting the distal end of the slot to the sole 3. The remaining distance between the lower end of the vertical slots 9a and 9b and the sole 3 is of the same order of magnitude as the thickness of the steel sheet constituting the rail.

Les fentes délimitent dans l'âme 2, deux bandes de matière 10a et 10b de part et d'autre de l'encoche 7 et au-dessus de la semelle 3. Les fentes délimitent à leur extrémité distale un point de fléchissement de la semelle lorsque le rail est soumis à une force de compression longitudinale.The slots delimit in the core 2, two strips of material 10a and 10b on either side of the notch 7 and above the sole 3. The slots delimit at their distal end a point of bending of the sole when the rail is subjected to a longitudinal compressive force.

Dans une variante d'exécution (non représentée), les fentes peuvent s'étendre obliquement de l'ouverture principale 5 jusqu'à la semelle 3.In an alternative embodiment (not shown), the slots can extend obliquely from the main opening 5 to the sole 3.

L'absorbeur de dilatation comporte encore un évidement 11 dans la partie supérieure du bulbe 4 de manière à délimiter deux bandes de matière 12a et 12b aptes à flamber latéralement lorsque le rail est soumis à une force de compression longitudinale.The expansion absorber also includes a recess 11 in the upper part of the bulb 4 so as to delimit two strips of material 12a and 12b capable of buckling laterally when the rail is subjected to a longitudinal compressive force.

Les fig. 2 et 4 illustrent le rail 1 soumis à une force de compression longitudinale. Lorsque l'absorbeur déclenche, la semelle 3 et les bandes de matière 10a et 10b fléchissent vers le bas à partir des fentes 9a et 9b, formant une ligne de pliage 13 sous l'encoche 7. En même temps, les bandes de matière 12a et 12b du bulbe 4, s'écartent latéralement et les bords 6a et 6b de l'ouverture 5 se rapprochent. Les bandes de matière 12a et 12b ont une longueur L3.THE fig. 2 And 4 illustrate the rail 1 subjected to a longitudinal compressive force. When the absorber triggers, the sole 3 and the strips of material 10a and 10b flex downwards from the slots 9a and 9b, forming a fold line 13 under the notch 7. At the same time, the strips of material 12a and 12b of bulb 4, deviate laterally and the edges 6a and 6b of the opening 5 come together. The strips of material 12a and 12b have a length L3.

Lorsque les deux bords 6a et 6b viennent en contact, à un stade de la déformation de l'absorbeur contrôlé par l'espacement entre les bords, une résistance à la compression apparait qui permet de bloquer la compression du premier absorbeur déclenché et de reporter les déformations ultérieures sur un autre absorbeur.When the two edges 6a and 6b come into contact, at a stage of deformation of the absorber controlled by the spacing between the edges, a resistance to compression appears which makes it possible to block the compression of the first triggered absorber and to postpone the subsequent deformations on another absorber.

Sans cette résistance, lorsqu'un premier absorbeur du rail déclencherait, il constituerait une zone de faiblesse en compression et absorberait toute la déformation du rail sans qu'un autre absorbeur du rail n'atteigne son seuil de déclenchement.Without this resistance, when a first absorber on the rail would trigger, it would constitute a zone of weakness in compression and would absorb all the deformation of the rail without another absorber on the rail reaching its triggering threshold.

Pour augmenter la résistance des deux bords 6a et 6b, il est envisageable d'ajouter une surépaisseur 14a, 14b le long des bords 6a et 6b.To increase the resistance of the two edges 6a and 6b, it is possible to add an extra thickness 14a, 14b along the edges 6a and 6b.

Les fig. 3 et 4 représentent la même partie de rail 1 muni d'un absorbeur, en vue de face. Sur la fig. 3, ont été représentées les distances L 1, entre les deux bords 6a et 6b et la distance L 2 entre les extrémités distales des parties horizontales 8a et 8b des fentes. La distance L2 définit la longueur de la semelle qui va fléchir sous la force de compression.THE fig. 3 and 4 represent the same part of rail 1 equipped with an absorber, in front view. On the fig. 3 , the distances L 1 have been represented, between the two edges 6a and 6b and the distance L 2 between the distal ends of the horizontal parts 8a and 8b of the slots. The distance L2 defines the length of the sole which will bend under the compressive force.

La distance L3 définit la longueur des bandes de matière 12a et 12b du bulbe 4, aptes à flamber lorsque le rail est soumis à une force de compression longitudinale.The distance L3 defines the length of the strips of material 12a and 12b of the bulb 4, capable of buckling when the rail is subjected to a longitudinal compressive force.

De manière à obtenir un bon effet d'absorption tout en réduisant au minimum la perte de charge portante du rail, il est important que la distance L2 soit plus grande que la distance L1. Dans l'exemple illustré, L2 est environ 14 fois plus grande que L1.In order to obtain a good absorption effect while minimizing the load loss of the rail, it is important that the distance L2 is greater than the distance L1. In the example shown, L2 is approximately 14 times larger than L1.

Plus les distances L2 et L3 sont importantes, plus le seuil de déclenchement de l'absorbeur est bas.The greater the distances L2 and L3, the lower the triggering threshold of the absorber.

La distance L1 n'a pas d'effet sur la charge portante. L1 peut être déterminé en fonction de la résistance au feu souhaitée et du nombre d'absorbeurs disposés sur un même rail.The distance L1 has no effect on the load bearing. L1 can be determined according to the desired fire resistance and the number of absorbers arranged on the same rail.

Contrairement aux absorbeurs de l'état de la technique, les fentes 8a, 9a et 8b, 9b de l'absorbeur selon la présente invention, permettent de maximiser la charge portante du rail et forcent le maintien des deux extrémités du rail dans un plan aligné, lors de la dilatation du rail.Unlike the absorbers of the state of the art, the slots 8a, 9a and 8b, 9b of the absorber according to the present invention, make it possible to maximize the carrying load of the rail and force the two ends of the rail to be maintained in an aligned plane, during expansion of the rail.

Dans l'exemple illustré, si l'on dispose un absorbeur de dilatation tous les 60 cm, les distances sont L1=5mm, L2=70mm, L3=10 mm.In the example illustrated, if we place an expansion absorber every 60 cm, the distances are L1=5mm, L2=70mm, L3=10 mm.

Si l'on dispose un absorbeur de dilatation tous les 120 cm, les distances sont L1=12mm, L2=70mm, L3=10 mm.If we place an expansion absorber every 120 cm, the distances are L1=12mm, L2=70mm, L3=10 mm.

Ht est la hauteur totale du profil. Hb est la hauteur de l'âme. Dans l'exemple illustré, Ht est d'environ 37 mm et Hb est d'environ 25 mm.Ht is the total height of the profile. Hb is the height of the soul. In the example shown, Ht is approximately 37 mm and Hb is approximately 25 mm.

H1 est la hauteur de la partie des bords verticaux 6a et 6b située au-dessus des fentes 8a, 8b. Dans l'exemple illustré, H1 est d'environ la moitié de la hauteur de l'âme Hb. Plus H1 sera important, plus la force de résistance à la compression augmente, ce qui évite que toute la dilatation ne soit absorbée par un seul absorbeur.H1 is the height of the part of the vertical edges 6a and 6b located above the slots 8a, 8b. In the example shown, H1 is approximately half the height of the web Hb. The greater H1, the more the force of resistance to compression increases, which prevents all the expansion from being absorbed by a single absorber.

H2 est la hauteur des bandes 10a et 10b. Dans l'exemple illustré, elle est d'un dixième de Hb.H2 is the height of bands 10a and 10b. In the example illustrated, it is one tenth of Hb.

H3 est la hauteur des bandes de matière 12a et 12b du bulbe 4. Dans l'exemple illustré, H3 représente huit dixième de la hauteur du bulbe 4 (Ht-Hb).H3 is the height of the strips of material 12a and 12b of bulb 4. In the example illustrated, H3 represents eight tenths of the height of bulb 4 (Ht-Hb).

Les fig. 5 et 6 illustrent un deuxième mode de réalisation.THE fig. 5 and 6 illustrate a second embodiment.

L'absorbeur de dilatation est également constitué d'une ouverture principale 50 ménagée au travers des deux épaisseurs de l'âme 2. Elle s'étend également à sa partie inférieure jusqu'à la semelle 3 en dessinant également une encoche 7 en forme de V, mais à sa partie supérieure, l'ouverture 50 s'étend sensiblement jusqu'à la partie supérieure du bulbe 4, en ne ménageant qu'une fine bande de matière 20. Pour que la bande de matière 20 soit apte à flamber vers le haut lorsque le rail est soumis à une force de compression longitudinale, elle comporte une entaille 21 en forme de V inversé. Cette entaille 21 aminci la bande de matière 20 à sa partie centrale pour former une zone de pliage 22 qui s'élève lorsque le rail est soumis à une force de compression longitudinale.The expansion absorber also consists of a main opening 50 provided through the two thicknesses of the core 2. It also extends in its lower part up to the sole 3, also drawing a notch 7 in the shape of a V, but at its upper part, the opening 50 extends substantially to the upper part of the bulb 4, leaving only a thin strip of material 20. So that the strip of material 20 is able to buckle towards the top when the rail is subjected to a longitudinal compressive force, it has a notch 21 in the shape of an inverted V. This notch 21 thins the strip of material 20 at its central part to form a folding zone 22 which rises when the rail is subjected to a longitudinal compressive force.

L'ouverture 50 comporte également deux bords verticaux 60a et 60b, distant d'une distance L1.The opening 50 also includes two vertical edges 60a and 60b, spaced a distance L1 apart.

Selon ce deuxième mode de réalisation, l'absorbeur de dilatation comporte aussi les mêmes fentes 8a, 9a, 8b, 9b que l'absorbeur illustré aux fig . 1 à 4.According to this second embodiment, the expansion absorber also includes the same slots 8a, 9a, 8b, 9b as the absorber illustrated in fig. 1 to 4 .

Les dimensions Ht, Hb, H1, L1, L2 et L3 sont sensiblement les mêmes que pour l'absorbeur de dilatation illustré aux fig. 1 à 4.The dimensions Ht, Hb, H1, L1, L2 and L3 are substantially the same as for the expansion absorber illustrated in fig. 1 to 4 .

Claims (12)

  1. A rail (1) for a panel support forming a suspended ceiling, said rail (1) having an inverted T-shaped cross section and having a height Ht, the rail (1) comprising:
    - a vertical web (2) extending from a lower end to an upper end,
    - horizontal extensions forming a base plate (3), which is able to support the panels, which extensions are arranged at the lower end of the web,
    - a bulbous piece (4) arranged at the top of the web,
    said rail (1) comprising at least one expansion absorber;
    said expansion absorber comprising at least:
    a main opening (5, 50) comprising 2 substantially vertical edges (6a, 6b, 60a and 60b) extending into the vertical web (2), the 2 edges being spaced apart by a length L1 when the rail is not subjected to a longitudinal compressive force, the 2 edges being aligned so as to abut against one another when the rail is subjected to a sufficient longitudinal compressive force;
    said main opening (5, 50) extending, at the lower part, as far as an area of material able to form a fold line (13) when the rail is subjected to a longitudinal compressive force;
    two slits (8a, 9a, 8b, 9b) each extending on either side of the main opening (5, 50) over a total length L2 greater than L1, the two slits (8a, 9a, 8b, 9b) delimiting, with the base plate (3), two strips of material (10a, 10b) which are able to fold,
    the two substantially vertical edges (6a, 6b, 60a and 60b) extending over a height H1 representing between 0.3 and 0.8 times the height Hb of the web (2) of the profiled element, preferably between 0.4 and 0.8 times the height Hb of the web (2).
  2. The rail according to the preceding claim, characterized in that the slits comprise a horizontal part (8a, 8b) and a vertical part (9a, 9b).
  3. The rail according to claim 1, characterized in that the slits extend obliquely from the base of the edges of the opening toward the areas able to form a fold line.
  4. The rail according to any one of the preceding claims, characterized in that the opening (50) extends, at the upper part thereof, to a fine strip of material (20) which is able to deform under the effect of a longitudinal compressive force by forming a bridge.
  5. The rail according to the preceding claim, characterized in that the strip of material (20) which is able to deform comprises a central notch (21) defining a fold line in the upper part of the bulbous piece (4).
  6. The rail according to any one of claims 1 to 3, characterized in that:
    the upper part of the bulbous piece comprises a cut-out (11);
    the main opening (5) extending, at the upper part thereof, to a segment of intact material (12a, 12b) present between the main opening (5) and the cut-out (11) of the bulbous piece;
    each segment of intact material (12a, 12b) of the bulbous piece being able to deform laterally under the effect of a longitudinal compressive force;
  7. The rail according to any one of the preceding claims, characterized in that the web comprises an extra thickness (14a, 14b) which stiffens the substantially vertical edges of the main opening (5, 50).
  8. The rail according to any one of the preceding claims, characterized in that the ratio of the distances L2/L1 is greater than 2, preferably greater than 4.
  9. The rail according to claim 6, characterized in that the segments of material (12a and 12b) of the bulbous piece (4) which are able to deform have a length L3; the ratio of the distances L2/L3 being between 4 and 9, preferably between 5 and 8.
  10. The rail according to any one of the preceding claims, characterized in that L1/Ht is between 0.05 and 0.8, preferably between 0.1 and 0.5.
  11. The rail according to any one of the preceding claims, characterized in that the two strips of material (10a, 10b) which are able to fold have a height H2, the ratio H2/Hb being between 0.02 and 0.4, preferably between 0.05 and 0.2.
  12. The rail according to any one of the preceding claims, characterized in that it comprises a plurality of expansion absorbers arranged along its length.
EP21717146.1A 2020-03-23 2021-03-22 A rail for a false ceiling comprising dilatation absorbers Active EP4127346B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR2002817A FR3108349B1 (en) 2020-03-23 2020-03-23 Suspended ceiling rail with expansion absorbers
PCT/FR2021/050481 WO2021191545A1 (en) 2020-03-23 2021-03-22 Rail for suspended ceiling comprising expansion absorbers

Publications (3)

Publication Number Publication Date
EP4127346A1 EP4127346A1 (en) 2023-02-08
EP4127346C0 EP4127346C0 (en) 2024-05-08
EP4127346B1 true EP4127346B1 (en) 2024-05-08

Family

ID=71784170

Family Applications (1)

Application Number Title Priority Date Filing Date
EP21717146.1A Active EP4127346B1 (en) 2020-03-23 2021-03-22 A rail for a false ceiling comprising dilatation absorbers

Country Status (5)

Country Link
US (1) US11788285B2 (en)
EP (1) EP4127346B1 (en)
CA (1) CA3168442C (en)
FR (1) FR3108349B1 (en)
WO (1) WO2021191545A1 (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1167649B1 (en) * 2000-07-01 2004-04-21 Worthington Armstrong Venture Beam for a grid in a suspended ceiling

Family Cites Families (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3175655A (en) * 1962-02-16 1965-03-30 Donn Prod Inc Controlled expansion structural beam and grid structure including same
US3388519A (en) * 1964-10-28 1968-06-18 Donn Prod Inc Controlled expansion structural beam and grid
US3390503A (en) * 1965-09-10 1968-07-02 Armstrong Cork Co Thermally responsive beam joint
US3397501A (en) * 1965-10-23 1968-08-20 Reinhardt H. Jahn Fire-rated runner with expansion section
US3496690A (en) * 1967-04-17 1970-02-24 Chicago Metallic Sash Co Main runner part
US3589089A (en) * 1969-10-20 1971-06-29 Eastern Prod Corp Structural beam for ceiling suspension system
US3778947A (en) * 1971-11-03 1973-12-18 Flangeklamp Corp Fire-rated grid member with controlled expansion means
US3846031A (en) * 1972-04-04 1974-11-05 Rollform Inc Ceiling grid system expansion joint
US3965631A (en) * 1974-08-01 1976-06-29 Roblin Hope's Industries, Inc. Fire rated grid-member with controlled expansion means
CA1013917A (en) * 1975-11-18 1977-07-19 Ceiling And Drywall Products Limited Controlled expansion suspended ceiling grid member
US4106878A (en) * 1977-02-04 1978-08-15 National Rolling Mills Company Fire-rated ceiling grid cross joint
CA1038585A (en) * 1977-04-06 1978-09-19 John O. Beynon Controlled expansion suspended ceiling grid beam
US4598514A (en) * 1984-09-06 1986-07-08 Donn Incorporated Suspension ceiling grid runner with expansion means
USRE33501E (en) * 1985-05-13 1990-12-25 National Rolling Mills, Inc. Fire-rated beam with expansion relief section
US4606166A (en) * 1985-05-13 1986-08-19 National Rolling Mills Inc. Fire-rated beam with expansion relief section
US4685262A (en) * 1985-10-17 1987-08-11 Consolidated Systems, Inc. Main beam for ceiling panel suspension system
US4713919A (en) * 1986-09-05 1987-12-22 National Rolling Mills Inc. Laser welded ceiling grid members
US4785595A (en) * 1988-01-29 1988-11-22 Chicago Metallic Corporation Fire-rated main runner
US4893444A (en) 1988-05-02 1990-01-16 Armstrong World Industries, Inc. Fire expansion joint for ceiling runner
US5313750A (en) * 1992-04-06 1994-05-24 Armstrong World Industries, Inc. Fire-rated runner
US5347783A (en) 1993-03-04 1994-09-20 Armstrong World Industries, Inc. Prenotched fire-rated runner
US5349803A (en) 1993-06-07 1994-09-27 Armstrong World Industries, Inc. Lanced fire-rated runner
US6751922B1 (en) 2003-02-25 2004-06-22 Worthington Armstrong Venture Faceted radius grid

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1167649B1 (en) * 2000-07-01 2004-04-21 Worthington Armstrong Venture Beam for a grid in a suspended ceiling

Also Published As

Publication number Publication date
FR3108349B1 (en) 2022-03-25
FR3108349A1 (en) 2021-09-24
US11788285B2 (en) 2023-10-17
WO2021191545A1 (en) 2021-09-30
US20230114856A1 (en) 2023-04-13
EP4127346C0 (en) 2024-05-08
EP4127346A1 (en) 2023-02-08
CA3168442A1 (en) 2021-09-30
CA3168442C (en) 2023-09-12

Similar Documents

Publication Publication Date Title
EP2633132B1 (en) Connector for suspended metal ceiling framework and ceiling employing same
CH645963A5 (en) EXPANDED METAL STRUCTURE.
EP4127346B1 (en) A rail for a false ceiling comprising dilatation absorbers
FR2704016A1 (en) Ceiling rail with an expansion section.
EP3242980B1 (en) Improved module forming a thermal bridge breaker for externally insulated buildings
FR2569747A1 (en) SUSPENDED CEILING PROFILE HAVING EXPANSION MEANS
FR2910509A1 (en) "WALL CLADDING AND STABILIZATION PART FOR SUCH A WALL COVER"
EP3656633B1 (en) Railway vehicle car
FR3072109A1 (en) CLOSURE SYSTEM COMPRISING AT LEAST ONE LATTICE PANEL AND AT LEAST ONE OCCULTY BLADE
EP3301238A1 (en) Profile member with return and tabs and associated spacer
FR3058430A1 (en) PREFABRICATED BUILDING ELEMENT
FR2970773A1 (en) PROTECTION GRID
EP1678389B1 (en) Large-span self-supporting metal formwork
EP3610094B1 (en) Bracket for fixing an insulating panel
FR3035892A1 (en) ASSEMBLY OF BEAMS AND POSTS FOR STACK CONSTRUCTION
EP1762694B1 (en) Metal ladder and method of manufacture thereof
WO2016001580A1 (en) Spacer for breaking a thermal bridge in a building device, use thereof and corresponding building device
EP2339085A1 (en) Prefabricated element for the construction of building extensions and building extensions thus built
BE1006496A5 (en) Device for maintaining rejected two elements in plate game pieces with an element of structure including such device, element suitable structure.
FR2708646A1 (en) Grating more particularly intended to cover frontages and/or roofs
FR2718776A1 (en) Shuttering panel for concrete
FR2827943A1 (en) C-shaped section for buildings comprises web surface and two bar surfaces welded at right angles with free edges welded in two edges directed towards each other
FR3144833A1 (en) Blackout blade suitable for being attached to a welded mesh panel
WO2016001585A1 (en) Spacer that breaks thermal bridges, comprising reinforcing bosses, use thereof and corresponding construction device
FR3078355A1 (en) ASSEMBLY COMPRISING CLOSURE BLADES AND ELASTIC FASTENERS AND METHOD OF MOUNTING

Legal Events

Date Code Title Description
STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: UNKNOWN

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE

PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE

17P Request for examination filed

Effective date: 20221024

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

DAV Request for validation of the european patent (deleted)
DAX Request for extension of the european patent (deleted)
GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: GRANT OF PATENT IS INTENDED

INTG Intention to grant announced

Effective date: 20231201

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE PATENT HAS BEEN GRANTED

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 602021013074

Country of ref document: DE

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

Free format text: LANGUAGE OF EP DOCUMENT: FRENCH

U01 Request for unitary effect filed

Effective date: 20240528

U07 Unitary effect registered

Designated state(s): AT BE BG DE DK EE FI FR IT LT LU LV MT NL PT SE SI

Effective date: 20240606