EP2551419B1 - Elément de liaison pour un faux plafond et procédé d'installation associé - Google Patents

Elément de liaison pour un faux plafond et procédé d'installation associé Download PDF

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Publication number
EP2551419B1
EP2551419B1 EP11175393.5A EP11175393A EP2551419B1 EP 2551419 B1 EP2551419 B1 EP 2551419B1 EP 11175393 A EP11175393 A EP 11175393A EP 2551419 B1 EP2551419 B1 EP 2551419B1
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Prior art keywords
metal profile
support frame
connection article
profile
profiles
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EP11175393.5A
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German (de)
English (en)
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EP2551419A1 (fr
Inventor
Giuseppe Cipriani
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Individual
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Individual
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Priority to EP11175393.5A priority Critical patent/EP2551419B1/fr
Priority to PCT/IB2012/053305 priority patent/WO2013014552A1/fr
Publication of EP2551419A1 publication Critical patent/EP2551419A1/fr
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    • 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
    • E04B9/12—Connections between non-parallel members of the supporting construction
    • E04B9/16—Connections between non-parallel members of the supporting construction the members lying in different planes

Definitions

  • connection article suitable for support structures, or load-bearing structures, of false ceilings, i.e. support structures for walls or panels placed underneath a regular ceiling.
  • Support structures for false ceilings comprise a support frame intended for supporting or propping of panels or plates, which are connected to the ceiling by a so-called hanger, steel rods or other coupling articles.
  • the support frame includes metal profiles, preferably but not exclusively C- or U-shaped (i.e., made of a side wall and two opposed lateral sides or shoulders).
  • the metal profiles are cross-like overlapped to ideally form a grid, the grid defining a plane for the panels of the false ceiling.
  • the above-mentioned connection article is intended to connect and fix the metal profiles to each other in the region of areas of crossing between two metal profiles in the grid-like configuration.
  • DE20215863U1 , DE29606746U1 , EP0638758A2 , DE3048946A1 , DE9304348U1 , DE19753711A1 disclose support structures for false ceilings.
  • connection articles are not sufficiently effective for fixing metal profiles.
  • known connection articles require many manual steps for the fixing to the profiles by an operator, with an entailed slowness in assembling.
  • the need to perform various manual steps entails in some cases a lack of safety, owing to profiles not completely locked or not fixed in a workmanlike manner.
  • the present disclosure stems from the technical problem of providing a connection article for a support frame of a false ceiling allowing to overcome the drawbacks mentioned above with reference to the known art, and/or attain further advantages or features.
  • connection article is a C- or U-shaped sheet metal body (comprising a top wall and two side walls) and intended to be arranged straddling a pair of metal profiles cross-like placed the one on the other, i.e., it is a body intended to be arranged astride or straddling in the region of a crossing of a upper metal profile and a lower metal profile, so as to connect the two profiles in a crossed condition.
  • the top wall of the connection article rises above, or lies on, lateral sides of the upper metal profile, whereas the side walls of the same connection article are partially inserted in the lower metal profile, and cooperate with end edges of the lateral sides of the lower metal profile.
  • Each of the side walls of the connection article has lateral projections in the region of end areas. Such projections, when the article is arranged astride the metal profiles, are able to interfere (with a stable engagement) with opposite edges of the lower metal profile, so as to lock or trap the upper metal profile between the top wall of the connection article and the lower metal profile itself.
  • the sheet metal body includes two finnings, on each side of the top wall, in which each finning is comprised between the side walls.
  • each finning defines, with the respective side wall, a seat, recess or niche. The edge of each of the lateral sides of the upper metal profile is stably received into the niche, and interferes with a corresponding finning of the connection article.
  • the lower metal profile is engaged by, or interferes with the projections of the side walls of the connection article, whereas the upper metal profile is locked between the top wall of the connection article, where it cooperates with the finnings, and the lower metal profile.
  • edges of the upper metal profile by being received into the niches and interfering with the finning, prevent a collapse of the upper metal profile on itself, i.e. a closing of the lateral sides of the upper metal profile the one towards the other.
  • This locked/trapped position allows a stable connection between the metal profiles, and prevents movements of the components in a vertical direction.
  • a relative sliding of the upper metal profile, the lower metal profile and the connection article may be allowed in order to modify a pitch in a grid made of plural metal profiles placed cross-like.
  • the lower metal profile in order to insert at least partially the side walls of the connection article in the lower metal profile, is slightly spread apart elastically during insertion, so that after an elastic return the lateral sides of the lower metal profile cooperate with the projections of the connection article.
  • said projections are bent and cambered towards the outside, so that the lateral sides of the lower metal profile can slide thereon during the spreading apart.
  • connection article is sized so that a distance between the pairs of side walls is less than a distance between the lateral sides of the upper metal profile. For instance, the distance between the pairs of side walls is measured at the height of the above-mentioned seat or niche. This feature allows, when the connection article is placed on the metal profiles, to flex the sides of the upper metal profile the one to the other, so as to ensure more stable contact with the connection article.
  • the above-mentioned distance between the pairs of side walls of the connection article is selected less than a distance between the lateral sides of the upper metal profile, so that the upper metal profile defines a convex-radius camber area facing the lower metal profile, said camber area being in pressing contact against said other metal profile.
  • connection article when the connection article is placed on the metal profiles the lower metal profile is trapped or locked, both by the projections of the connection article, and by the camber area of the upper metal profile pressing towards the lower metal profile.
  • This solution can improve stability of the connection and further prevent plays of the components in a vertical direction.
  • a connection article for a support frame of a support structure of a false ceiling is denoted by reference number 1.
  • a support or load bearing frame of a support structure of a false ceiling is denoted by reference number 100 and comprises a plurality of metal profiles 2a, 2b, also referred to as "C profiles" or “U profiles”, which are cross-like overlapped to define a grid-like configuration (partially visible in Figures 4-6 ).
  • metal profiles 2a of a first set are arranged in parallel, evenly spaced the one from the other, and metal profiles 2b of a second set are arranged in parallel, evenly spaced the one from the other.
  • the metal profiles 2a of the first set are overlapped to the second set of metal profiles 2b along a direction orthogonal to the first set.
  • each metal profile 2a of the first set which lies above, or upper metal profile, is arranged in a configuration overlapped and crossed, or cross-like, to at least one metal profile 2b of the second set, which lies below, or lower metal profile.
  • connection article 1 is intended to be arranged straddling the two metal profiles 2a, 2b in the area of crossing in order to connect in a stable way such two metal profiles 2a, 2b.
  • connection article 1 once installed on-site, is therefore, e.g., arranged with an orientation like that visible in Figures 1 , 4-6 . It follows that any spatial reference in the present description and in the claims hereinafter, such as, e.g., “top”, “above”, “upper”, “bottom”, “lower”, “horizontal”, “vertical”, is to be understood as merely by way of example, with reference to the above-mentioned orientation.
  • connection article 1 is a sheet metal body 10 bent and including two side walls 12 connected by means of first bends P1, for instance forming an angle ⁇ greater than 90° ( Figure 3 ), to a top wall 11.
  • first bends P1 for instance forming an angle ⁇ greater than 90° ( Figure 3 )
  • the side walls 12 are portions of the sheet metal body 10 facing and opposed to each other.
  • the side walls 12 are slightly spread apart with respect to a vertical, for instance of an angle ⁇ of 5°, to form said angle ⁇ of 95°. In other words, the side walls 12 are in a mutually converging position.
  • the top wall 11 is interposed between the side walls 12.
  • the sheet metal body 10 has a shape substantially similar to an upturned U or C.
  • the top wall 11 forms the base of the U or C
  • the two side walls 12 are the two end sections of the U or C.
  • the peculiar shape of the sheet metal body 10, and in particular the arrangement of the top wall 11 and of the side walls 12, define an internal housing A intended to receive, as will be seen hereinafter, one of the two metal profiles 2a.
  • connection article 1 is symmetrical with respect to a longitudinal plane, identified in the figures by a dashed line denoted by reference letter L, orthogonally intersecting the two side walls 12, and is also symmetrical with respect to a transversal plane, identified in the figures by a dashed line denoted by reference letter T, crossing the centre of the housing A.
  • the longitudinal plane L and the transversal plane T actually correspond, in the example, to symmetry planes.
  • each side wall 12 includes, starting from bend P1, a central portion 12a, which therefore is contiguous to the top wall 11, and an end portion 13, corresponding to the edge area of the side wall 12 far from the top wall 11. More in particular, referring specifically to Figure 2 , the end portion 13 has a lateral extension greater than the central portion 12a and, sideways, defines coupling projections 17, which therefore project from opposite sides with respect to the longitudinal plane L.
  • the end portion 13 is wider in a lateral direction starting from the longitudinal plane L.
  • the sheet metal body 10 includes two coupling projections 17 in the region of each side of the end portion 13.
  • the sheet metal body 10 overall includes four coupling projections 17.
  • each end portion 13 is a free-end edge bent towards the outside of the sheet metal body 1 and wider than the central portion 12a.
  • the end portion 13 is not only bent but also rounded or cambered with a concavity facing upwards in the figures, i.e., on the side of the top wall 11. It follows that also the coupling projections 17 have a shape curved upwards, i.e. with the concavity facing towards, or on the side of the top wall 11.
  • the end portion 12b is bent cup-like.
  • the end portion 13 comprises a connecting part 12b coplanar with the central portion 12a and a bent end part 12c.
  • a second bend P2 having an angle of about 90°, is provided.
  • the sheet metal body 10 includes two finnings 16.
  • the finnings 16 are sheet metal portions projecting from the top wall 11 on each side of the top wall 11 in an area comprised between the side walls 12.
  • the finnings 16 extend along a direction substantially parallel to the longitudinal plane L and orthogonally to the plane T.
  • each finning 16 is separated from the top wall 11 by third bends P3, for instance 90° ones. More specifically, in the exemplary embodiment illustrated the finnings 16 are substantially trapezoidal-shaped (trapezium-shaped) sheet metal portions, bent downwards with respect to the top 11, on the side of the coupling projections 17 or towards the housing A.
  • the trapezoidal shape of the finnings 16 defines, on each side of a respective finning 16, a respective seat, niche, or recess 160.
  • the sheet metal body 10 further includes two reinforcing ribs 15.
  • the reinforcing ribs 15 are essentially drawn sections of the sheet metal body 10. More specifically, the ribs 15 have a rounded or curved section and extend along the top wall 11, on the central portion 12a and towards the coupling projections 17.
  • the two ribs 15 extend parallel on the top wall 11, on the central portions 12a of the side walls 12 to the connecting part 12b, and bend in a direction diametrically opposite to the longitudinal plane L to end each in the region of the coupling projections 17.
  • the sheet metal body 10 includes two reinforcing drawn sections 14.
  • the drawn sections 14 are located in the region of the first bends P1, and are essentially sink marks or depressions, or hollows, located in the region of the bends P1. More specifically, the drawn sections 14 are located in a median zone of the bends P1 and define grip areas for the sheet metal body 10.
  • each of the two metal profiles 2a, 2b extending along a respective longitudinal axis Z1, Z2.
  • the metal profile 2a, 2b has a U-like shape, from which the above-mentioned "U profile" name derives, with a bottom wall 22 and two lateral sides 21.
  • the metal profile 2a, 2b has the cavity 24 of the U facing upwards.
  • the bottom wall 22 connects to the side walls 21 by means of corners 23.
  • Each side wall 21 ends with a bent edge 20, in the example rounded, which, in the example, is rounded.
  • the bent edge 20 is obtained by bending the lateral side 21 onto itself. More specifically, the bending faces the cavity 24 of the metal profile 2a, 2b. It follows that, in the exemplary embodiment, the bent edges 20 define a projection oriented towards the cavity 24 of the metal profile 2a, 2b.
  • a distance D between the pairs of side walls 12 of the connection article 10 is less than a distance between the lateral sides 21 of the metal profile, i.e. is less than the width of the cavity 24, width that is measured along a direction orthogonal to the longitudinal axis Z1, Z2.
  • the distance D between the pairs of side walls 12 is measured in the region of a connection zone between each side wall 12 and the top wall 11, in the region of the first bends P1 or of the niches/seats 160.
  • connection article when the connection article is arranged astride of or straddling a metal profile 2a, 2b, and the side walls 12 of the connection article 10 embrace from the outside the corresponding lateral sides 21 of the metal profile 2a, 2b, forcing the sides 21 in a converging direction, the bottom wall 22 of the metal profile 2a, 2b is bent to have/define a camber area 30 substantially central and facing downwards. ( Figure 6 )
  • connection article 1 a step of connecting and fixing between the connection article 1 and the metal profiles 2a, 2b.
  • the two metal profiles are arranged in a relationship overlapped the one to the other, both with the cavity 24 of the "U" facing upwards.
  • the metal profiles 2a, 2b are arranged cross-like or X-like, that is, with the longitudinal axes Z1, Z2 arranged orthogonally to each other.
  • connection article 1 is inserted on the upper metal profile 2a so that the housing A be facing the cavities 24.
  • connection article 1 is arranged straddling so as to embrace the upper metal profile 2a.
  • bent edges 20 and the lateral sides 21 of the upper metal profile 2a are received inside the housing A of the connection article 1.
  • connection article 1 is inserted with a certain tilt with respect to the horizontal, and in particular with the side walls 12 tilted with respect to the lateral sides 21, as illustrated in Figure 4 .
  • the connection article 1 is inserted so that the longitudinal plane L be tilted with respect to the lateral sides 21 of the lower metal profile 2b.
  • connection article 1 From this position, a downwards pressure is applied on the connection article 1, in the region of the top wall 11, towards the metal profiles 2a, 2b.
  • the lateral sides 21 of the lower metal profile broaden out or move away the one with respect to the other, until obtaining the desired coupling.
  • the coupling projections 17 pass over the bent edges 20 of the lower metal profile 2b.
  • the four coupling projections 17 of the connection article 1 lie below the bent edges 20 of the lower metal profile 2b.
  • the edges 20 of the upper metal profile 2a are received into the respective seats 160, so as to interfere with the finnings 16, and be locked there.
  • the article for false ceiling according to the present disclosure can improve the modes of assembly between article for false ceiling and metal profiles, without vibrations.
  • the shape and structure of the coupling projections of the article for false ceiling according to the present disclosure allow a quick, simple and safe coupling of article for false ceiling and metal profiles.
  • the peculiar cambered and rounded shape of the coupling projections and their strength enable the coupling projections to elastically deform the side walls of the lower metal profile, by acting as a sort of wedge, and allowing to quickly obtain a connection between the connection article and the metal profiles.
  • the article for false ceiling is perfectly integral to the metal profiles, both thanks to the constraints deriving from the coupling of the coupling projections on the edges of the lower metal profile, and thanks to the constraints deriving from the receiving, inside the housing, of edges and side walls of the upper metal profile.
  • such a configuration can allow to minimize the risk that on-site plays or vibrations be generated between metal profiles and article for false ceiling, and can further prevent that the metal profiles be subject to deformations on-site.
  • the peculiar shape of the housing and of the finnings can allow to lock in position the side walls and the edges of the upper metal profile.
  • the upper metal profile can keep a constant contour and section, remarkably increasing the capacity.
  • the distance between the side walls e.g. measured between the first bends, is less than the distance between the lateral sides of the metal profile.
  • the upper metal profile is held stationary by the edges of the lower metal profile, which under the action of the projections of the connection article push upwards, and by the top wall and the finnings of the connection article, which pushes downwards.
  • the lower metal profile is held stationary by the projections of the connection article, which push upwards, and by the camber area which pushes downwards.
  • a spring structure is obtained in the region of the bottom wall of the upper metal profile that compresses the lower metal profile, all in a single assembly movement concluding with the full rotation of the connection article on the two orthogonally overlapped profiles.
  • connection article connection article, upper metal profile, lower metal profile
  • connection article connection article, upper metal profile, lower metal profile

Claims (11)

  1. Bâti de support (100) d'une structure pour supporter un faux plafond, le bâti de support (100) comprenant une combinaison de deux profilés métalliques chevauchés en forme de croix (2a, 2b) et un article de raccordement (1) approprié pour raccorder les deux profilés métalliques (2a, 2b),
    ledit article de raccordement (1) comprenant un corps de métal en feuille (10) ayant une paire de parois latérales (12) opposées, et une paroi supérieure (11) intercalée entre les parois latérales (12) pour définir un boîtier (A), dans lequel chacune des parois latérales (12) définit un premier pli (P1) avec la paroi supérieure (11), et dans lequel chaque paroi latérale (12) comprend, à partir du premier pli (P1), une partie centrale (12a) et une partie d'extrémité (13), dans lequel la partie d'extrémité (13) a une extension latérale supérieure à la partie centrale (12a) et, latéralement, définit des saillies de couplage (17), et dans lequel le corps de métal en feuille (10) comprend deux gerces (16), chacune faisant saillie à partir de la paroi supérieure (11) de chaque côté de la paroi supérieure (11) dans une zone comprise entre les parois latérales (12), chaque gerce (16) définissant, avec une paroi latérale (12) respective, une niche (160),
    dans lequel chaque profilé métallique (2a, 2b) comprend une paroi inférieure (22) et des côtés latéraux (21), et dans lequel ladite paroi inférieure (22) et lesdits côtés latéraux (21) définissent une cavité (24), lesdits profilés métalliques (2) étant agencés en forme de croix et chevauchés l'un sur l'autre dans une zone de croisement, deux desdites cavités (24) faisant face au boîtier (A) de l'article de raccordement (1),
    dans lequel un profilé métallique (2a) se trouvant au-dessus dans la zone de croisement, ou un profilé métallique supérieur est reçu à l'intérieur du boîtier (A) et des bords (20) des côtés latéraux (21) dudit profilé métallique supérieur (2a) sont en mise en prise dans les niches (160) respectives de l'article de raccordement, et dans lequel lesdites saillies de couplage (17) de l'article de raccordement (1) sont en mise en prise avec des bords (20) respectifs des côtés latéraux (21) de l'autre profilé métallique (2b) se trouvant au-dessous dans la zone de croisement, ou profilé métallique inférieur, et dans lequel les côtés latéraux (21) du profilé métallique supérieur (2a) sont forcés dans une position convergente et caractérisé en ce que :
    dans une telle condition, la paroi inférieure (22) du profilé métallique supérieur (2a) a une zone de cambrure (30) faisant face au profilé métallique inférieur (2b), ladite zone de cambrure (30) étant en contact de pression contre ledit profilé métallique inférieur (2b).
  2. Bâti de support (100) selon la revendication 1, dans lequel chaque partie d'extrémité (13) est un bord du corps de métal en feuille (10) au moins partiellement plié vers une zone externe au boîtier (A) du corps de métal en feuille (10).
  3. Bâti de support (100) selon la revendication 1 ou 2, dans lequel la partie d'extrémité (13) est un bord au moins partiellement arrondi ou cambré du corps de métal en feuille (10).
  4. Bâti de support (100) selon l'une quelconque des revendications précédentes, dans lequel chaque paroi latérale (12) forme un angle supérieur à 90° avec la paroi supérieure (11).
  5. Bâti de support (100) selon l'une quelconque des revendications précédentes, dans lequel les parois latérales (12) sont dans une position mutuellement convergente.
  6. Bâti de support (100) selon l'une quelconque des revendications précédentes, dans lequel un troisième pli (P3) est intercalé entre chaque gerce (16) et la paroi supérieure (11).
  7. Bâti de support (100) selon l'une quelconque des revendications précédentes, dans lequel chaque gerce est en forme de trapèze.
  8. Bâti de support (100) selon l'une quelconque des revendications précédentes, dans lequel le corps de métal en feuille (10) comprend au moins deux nervures de renforcement (15), lesdites nervures (15) étant définies par des sections étirées obtenues dans le corps de métal en feuille (10), lesdites nervures s'étendant le long de la paroi supérieure (11), sur la partie centrale (12a) et vers les saillies de couplage (17).
  9. Bâti de support (100) selon la revendication 1, dans lequel les côtés latéraux (21) du profilé métallique supérieur (2a) adhèrent aux parois latérales (12) de l'article de raccordement (1).
  10. Procédé pour fixer deux profilés métalliques (2a, 2b) grâce à un article de raccordement d'un bâti de support (10) selon l'une quelconque des revendications 1 à 9, le procédé comprenant les étapes suivantes :
    faire chevaucher les deux profilés métalliques (2a, 2b) selon une forme de croix de sorte que l'un des deux profilés métalliques (2a) ou le profilé métallique supérieur, soit agencé au-dessus de l'autre des profilés métalliques (2b) ou du profilé métallique inférieur ;
    placer l'article de raccordement (1) à cheval sur le profilé métallique supérieur (2a) de sorte que ledit profilé métallique supérieur (2a) soit partiellement reçu à l'intérieur du boîtier (A),
    incliner l'article de raccordement (1) de sorte que les parois latérales (12) de l'article de raccordement (1) soient inclinées par rapport aux côtés latéraux (21) du profilé métallique inférieur (2b),
    insérer deux saillies de couplage (17) sous un bord (20) respectif d'un côté latéral (21) du profilé métallique inférieur (2b) et appuyer les deux autres saillies de couplage (17) sur le côté opposé d'un bord (20) respectif d'un côté latéral (21) du profilé métallique inférieur (2b) ;
    appliquer une pression sur la paroi supérieure (11) vers les profilés métalliques (2a, 2b), jusqu'à ce que les deux autres saillies de couplage (17) s'appuyant sur le bord (20) passent sur ledit bord (20) et se mettent en prise avec ledit bord (20) et jusqu'à ce que le bord (20) du profilé métallique supérieur (2a) soit reçu dans la niche (160) respective de l'article de raccordement et interfère avec la gerce (16), caractérisé en ce que :
    lorsque chacune des deux saillies de couplage (17) se met en prise avec un bord (20) respectif du profilé métallique inférieur (2b), la paroi inférieure (22) du profilé métallique supérieur (2a) se plie pour former une zone de cambrure (30), dans lequel ladite zone de cambrure (30) appuie contre le profilé métallique (2b).
  11. Profilé selon la revendication 10, dans lequel lorsque chacune des deux saillies de couplage (17) se met en prise avec un bord (20) respectif du profilé métallique inférieur (2b) et la paroi inférieure (22) du profilé métallique supérieur (2a) se plie, les côtés latéraux (21) du profilé métallique supérieur (2a) sont forcés dans une position convergente.
EP11175393.5A 2011-07-26 2011-07-26 Elément de liaison pour un faux plafond et procédé d'installation associé Active EP2551419B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP11175393.5A EP2551419B1 (fr) 2011-07-26 2011-07-26 Elément de liaison pour un faux plafond et procédé d'installation associé
PCT/IB2012/053305 WO2013014552A1 (fr) 2011-07-26 2012-06-28 Article de liaison pour un cadre de support d'un faux plafond

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Application Number Priority Date Filing Date Title
EP11175393.5A EP2551419B1 (fr) 2011-07-26 2011-07-26 Elément de liaison pour un faux plafond et procédé d'installation associé

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EP2551419A1 EP2551419A1 (fr) 2013-01-30
EP2551419B1 true EP2551419B1 (fr) 2021-01-27

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WO (1) WO2013014552A1 (fr)

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RU175702U1 (ru) * 2017-10-18 2017-12-15 Хомик Юрий Ростиславович Подвес для каркасов подвесных потолков и межкомнатных перегородок
CN114599844A (zh) * 2019-12-26 2022-06-07 吉野石膏株式会社 夹紧件、顶棚基底及其施工方法

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Publication number Priority date Publication date Assignee Title
DE3048946C2 (de) * 1980-12-24 1984-09-27 Hans-Rainer 5800 Hagen Wichert Verbinder für zwei Tragschienen einer Unterdecke
DE9304348U1 (fr) * 1992-12-01 1993-05-13 Vogl, Erich R., 8535 Emskirchen, De
DE4327252A1 (de) * 1993-08-13 1995-02-16 Richter System Gmbh & Co Kg Blechprofilteil mit Sicke
DE29606746U1 (de) * 1996-04-13 1996-06-27 Richter System Gmbh & Co Kg Kreuzverbinder für CD-Schienen
DE19753711C2 (de) * 1997-12-04 2001-09-13 Huwer Kg Kreuzverbinder
DE20215863U1 (de) * 2002-10-15 2002-12-19 Knauf Westdeutsche Gips Vorrichtung zum Verbinden zweier Schienen

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EP2551419A1 (fr) 2013-01-30

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