EP3604707B1 - A device for levelling and spacing elements of a flooring - Google Patents

A device for levelling and spacing elements of a flooring Download PDF

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Publication number
EP3604707B1
EP3604707B1 EP19187400.7A EP19187400A EP3604707B1 EP 3604707 B1 EP3604707 B1 EP 3604707B1 EP 19187400 A EP19187400 A EP 19187400A EP 3604707 B1 EP3604707 B1 EP 3604707B1
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EP
European Patent Office
Prior art keywords
base
stem
elements
condition
spacing structure
Prior art date
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Active
Application number
EP19187400.7A
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German (de)
English (en)
French (fr)
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EP3604707A1 (en
Inventor
Silvio Ferrari
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.)
Polis Manifatture Ceramiche SpA
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Polis Manifatture Ceramiche SpA
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Publication of EP3604707A1 publication Critical patent/EP3604707A1/en
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Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F21/00—Implements for finishing work on buildings
    • E04F21/0092—Separate provisional spacers used between adjacent floor or wall tiles
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F15/00—Flooring
    • E04F15/02—Flooring or floor layers composed of a number of similar elements
    • E04F15/02005—Construction of joints, e.g. dividing strips
    • E04F15/02022—Construction of joints, e.g. dividing strips with means for aligning the outer surfaces of the flooring elements

Definitions

  • the present invention has as its subject-matter a device for spacing and levelling flooring elements, for laying said flooring elements, which allows simplifying the carrying out of the manufacturing steps aimed to obtain a perfect planarity of the flooring surface and a perfect spacing between the same elements.
  • a plurality of flooring elements is located on an adhesive so as to take, during the setting of such adhesive, an operative position which will therefore coincide with the final one. Therefore, such operative position has to be a position such that the flooring elements are as much levelled as possible, and as properly spaced apart one from the other as possible to achieve the objects set forth above in terms of planarity and spacing between the same flooring elements.
  • Such operative position has to be maintained with same stability in order to avoid that the flooring elements move one with respect to the other, jeopardizing the obtainment of the above-mentioned objects.
  • devices that allow blocking such plurality of flooring elements in their operative position during the setting of the adhesive can be referred to as devices for levelling and spacing flooring elements.
  • the levelling and spacing device comprises a base that defines a resting surface adapted to receive in support a plurality of respective portions belonging to the above-mentioned flooring elements, respectively.
  • the device comprises a spacing structure which is adapted to keep the flooring elements spaced apart, once the latter are rested with the above-mentioned respective portions on the above-mentioned resting surface.
  • the device comprises a stem standing up from the base and is configured to allow an operator to obtain an operative condition of a handle.
  • the handle takes such operative condition
  • the flooring elements take the above-mentioned operative position
  • the same handle presses on the flooring elements in contrast to the above-mentioned resting surface, so as to keep the flooring elements of blocked in the above-mentioned operative position.
  • the device allows an operator to remove the stem after the adhesive has sufficiently set.
  • the stem comprises an impact body that may receive a hit to cause the separation, by breaking the stem from the base.
  • a problem of the currently known types of such device is the difficulty in making so that such breaking is sufficiently precise to avoid that material residues remain projecting from the base.
  • EP2966239 discloses a spacer element for a positioning system for covering elements comprises a base intended to be made to bear on a fixing adhesive for the covering elements and to receive and support a portion of a rear surface of two adjacent covering elements, a plate extending transversely and an intended breaking line being formed between the plate and the base; the base having recesses that makes it possible to facilitate and improve the breakage of the spacer element at the intended breaking area.
  • US2013067854 discloses a leveling spacer for laying wall tiles, paving tiles and the like with the interposition of gaps, which comprises a base with spacing protrusions for the abutment of the edges of corresponding tiles so as to define the width of the gaps, a threaded stem, which is fixed at right angles to the base in at least one easily breakable point, a knob for clamping and removing the threaded stem, which comprises a female threaded portion adapted to be screwed to the threaded stem.
  • the present finding aims to propose a solution that is new and alternative to the heretofore known solutions, and in particular it is proposed to obviate one or more of the drawbacks or problems set forth above and/or to meet one or more needs set forth above, and/or anyhow felt in the art, and in particular inferred from what has been set forth above.
  • a levelling, spacing device of flooring elements having the characteristics of the attached claim 1 allows carrying out the laying process of such flooring elements without the risk of a presence, at the end of such process, of undesired material residues projecting between the above-mentioned flooring elements.
  • the present finding also relates to a levelling, spacing system of flooring elements comprising a device for levelling and spacing flooring elements in accordance with the pre-finding, and a handle.
  • a first possible implementation of a device in accordance with the present description is shown. Such first implementation is indicated by 1.
  • Figs. 2a-2c a second possible implementation of a device in accordance with the present description is shown. Such second implementation is indicated by 1'.
  • Figs. 3a-3c a third possible implementation of a device in accordance with the present description is shown. Such third implementation is indicated by 1".
  • the device is configured to level and concomitantly space elements of a flooring during the laying of such flooring elements.
  • flooring elements can be briquettes or tiles or plates or the like.
  • the device comprises a base.
  • the base of the first implementation, the base of the second implementation and the base of the third implementation are indicated by 2, 2' and 2", respectively.
  • the base defines a resting surface S.
  • the resting surface of the first implementation, the resting surface of the second implementation, and the resting surface of the third implementation are indicated by S, S' and S", respectively.
  • the resting surface S comprises a plurality of surface portions.
  • such plurality of surface portions is intended as comprising, by way of example and due to reasons which will be more clearly understood herein below, two surface portions, indicated respectively by S1 and S2.
  • Fig. 2b such plurality of surface portions is intended as comprising, by way of example and due to reasons which will be more clearly understood herein below, four surface portions, indicated respectively by S1', S2', S3' and S4'.
  • Fig. 3b such plurality of surface portions is intended as comprising, by way of example and due to reasons which will be more clearly understood herein below, three surface portions, indicated respectively by S1", S2", and S3".
  • Such surface portions are suitable to receive in support respective portions of said elements, so that said elements can take an operative position.
  • Such operative position of the plurality of flooring elements corresponds to the support of the respective portion of each of said elements on a respective surface portion of said surface portions.
  • Figs. 4a , 4b, 4c , 5-8 refer to an example of a laying process of such elements by the second implementation 1' of the device in accordance with the present description.
  • the plurality of flooring elements comprises a first flooring element E1, a second flooring element E2, a third flooring element E3, and a fourth flooring element E4.
  • the flooring elements E1-E4 take the above-mentioned operative position.
  • a portion e1 of the first element E1 rests on the first surface portion S1'
  • a portion e2 of the second element E2 rests on the second surface portion S2'
  • a portion e3 of the third element E3 rests on the third surface portion S3'
  • a portion e4 of the fourth element E4 rests on the fourth surface portion S4'.
  • Fig. 4b although a peripheral outermost part of the resting surface S' is visible, the same peripheral portion is not indicated for the sake of clarity of Fig. 4b .
  • the base 2 comprises a bottom portion 22.
  • the bottom portion of the first implementation, the bottom portion of the second implementation and the bottom portion of the third implementation are indicated by 22, 22' and 22", respectively.
  • the bottom portion has an upper outer surface. Such upper outer surface corresponds to said resting surface.
  • the upper outer surface of the bottom portion as regards the first implementation, the second implementation and the third implementation, are indicated by 221, 221' and 221", respectively.
  • the bottom portion of the base has a lower outer surface. Such lower outer surface is located and facing opposite said base with respect to said upper surface.
  • the lower outer surface of the base is indicated by 222, 222' and 222" respectively.
  • the device comprises a stem 3.
  • the stem 3 takes a securing or connecting condition to the base 2.
  • the stem 3 is configured to define an operative condition of a handle.
  • An example of such handle is indicated by 4 in Fig. 5 .
  • the device is configured so that, while the plurality of elements takes said operative position and the handle 4 takes such operative condition, the handle 4 presses on the respective portions of the elements, in contrast to the respective surface portions of said resting surface S, so as to block the elements in the operative position.
  • the base 2 comprises a weakened portion.
  • the weakened portion of the first implementation, the weakened portion of the second implementation and the weakened portion of the third implementation are indicated by 21, 21' and 21" respectively.
  • the weakened portion 21' is visible as enlarged in Fig. 8 .
  • Such weakened portion can be considered as a weakening or a weight reduction.
  • the handle 4 takes the operative condition and presses the portion e1 of the first element E1 on the first surface portion S1' of the resting surface S', the portion e2 of the second element E2 on the second surface portion S2' of the resting surface S', the portion e3 of the third element E3 on the third surface portion S3' of the resting surface S', and the portion e4 of the fourth flooring element E4 on the fourth surface portion S4' of the resting surface S'.
  • the portions of the resting surface are not visible.
  • the stem 3 comprises a connecting portion or body 31.
  • the connecting portion is adapted to cooperate with said handle 4 to define a connecting condition of such handle 4 to the stem 3.
  • Such operative condition of the handle 4 corresponds to such connecting condition of the handle 4 to the stem 3, this meaning that such operative condition 4 coincides with and/or occurs by said connecting condition of the handle 4 to the stem 3.
  • the device 1 extends along a connecting axis X arranged transversally to said resting surface S.
  • the connecting axis X is orthogonal to the resting surface S.
  • Such connecting condition is able to be obtained by at least one movement of said handle 4 on and with respect to said connecting portion 31.
  • Such movement comprises at least one translational component along said connecting axis X.
  • the connecting portion 31 is threaded so that such movement is a screwing movement of such handle 4 on such connecting portion 31. Therefore, in the implementations shown, such movement also comprises, concomitantly with such translational component, a rotational component about such connecting axis X.
  • the stem 3 comprises an impact body 32.
  • the impact body 32 is adapted to be hit by a user to cause, by breaking, the passage of said stem 3 from said securing or connecting condition to the base 2, to a separation condition with respect to said base 2.
  • Such securing condition of the stem 3 to the base 2 corresponds to a securing condition of the impact body 32 to the weakening.
  • hit could be applied also to the connecting portion 31.
  • Fig. 6 the stem is not shown since, in the situation of Fig. 6 , the stem 3 has been separated from the base 2' by the above-mentioned breaking.
  • Fig. 6 as regards the device, only the base 2', which is not very visible, is indicated.
  • Figs. 7 and 8 only the base 2', in the situation where the base 2 is in Fig. 6 is shown, and therefore after the stem has been separated from the base 2.
  • the device 1 or 1' or 1" is configured to keep such flooring elements spaced apart from one another, while they take such operative position.
  • the device comprises a spacing structure secured on the resting surface so as to define the above-mentioned plurality of surface portions of the resting surface.
  • the spacing structure of the first implementation is indicated by 5 in Fig. 1a and in Fig. 1c .
  • the spacing structure of the second implementation 1' is indicated by 5' in Fig. 2a and in Fig. 2c .
  • the spacing structure of the third implementation 1" is indicated by 5" in Fig. 3a and in Fig. 3c .
  • the spacing structure 5 is virtually secured on such resting surface, so as to project and/or stand up with respect to the same resting surface, along a direction parallel to the connecting axis X, so as to divide the same resting surface into the above-mentioned surface portions.
  • the spacing structure 5 of the first implementation 1 defines the two surface portions s1 and s2 indicated in Fig. 1 b , so that the above-mentioned plurality of surface portions can comprise such two surface portions s1 and s2.
  • the spacing structure 5' of the second implementation 1' defines the four surface portions s1', s2', s3', and s4' so that the above-mentioned plurality of surface portions can comprise such four surface portions s1', s2', s3' and s4'.
  • the spacing structure 5" of the third implementation 1" defines the three surface portions s1", s2", and s3", of Fig. 3b , so that the above-mentioned plurality of surface portions can comprise such three surface portions s1", s2", and s3".
  • the spacing structure 5' or 5" is part of the base 2' or 2", which therefore comprises such spacing structure 5' or 5".
  • the securing condition of the stem 3 to the base 2' or 2" corresponds to a securing condition of the stem 3 to the spacing structure 5' or 5". In this manner, the stem 3 extends along the connecting axis X starting from the spacing structure 5' or 5".
  • the impact body 32 defines and/or comprises the same spacing structure 5.
  • the securing condition of the stem 3 to the base 2 30 corresponds to a securing condition of the stem 3 to the bottom portion 22 of the base 2. In this manner, the stem 3 extends along the connecting axis X starting from said bottom portion 22 of the base 2.
  • the securing condition of the stem to the base corresponds to a securing condition of the stem to the above-mentioned weakened portion of the base, so that such weakened portion guides such breaking and therefore the passage of the stem 3 from the securing condition to the base 2 to the separation condition from the base.
  • the stem 3 is in a single piece with the base 2, before such breaking occurs, so that such securing condition is to be meant so that the stem 3 and the base 2 are in a single piece.
  • the weakened portion defines a narrowing of the resistant sectional area of the base, as it can be seen in Figs. 1c , 2c , 3c , and 8 .
  • Such narrowing is a reduction of the dimension along the connecting axis X of the above-mentioned resistant sectional area.
  • the weakened portion is configured to guide the above-mentioned breaking, when such breaking occurs by a flexure corresponding to a curvature of the connecting axis X.
  • the above-mentioned breaking occurs by a hit on the impact body, which hit causes a flexural deformation of such connecting axis X, sufficient to determine and/or cause the above-mentioned breaking.
  • the weakened portion is configured so that such breaking occurs by yielding of the material of the transition zone between the stem 3 and the base 2, so that, upon such breaking, and therefore upon the passage of the stem 3 from the securing condition to the separation condition with respect to the base 2, undesired residues or projections of material do not remain between the flooring elements, which would need to be later removed.
  • a breaking mode a yielding of the material of such transition zone, the guide effect of the same breaking by the same weakened portion is much more precise, and such as to obtain a perfect planarity of the upper surface of the base 2, in the breaking zone, as it can be seen in Fig. 7 .
  • the weakened portion 21 comprises a cavity 211.
  • the cavity of the first implementation, the cavity of the second implementation and the cavity of the third implementation are indicated by 211, 211' and 211" respectively.
  • Such extension of the bottom portion of the base along such connecting axis X is to be intended as a sector, defined by the bottom portion, of the extension of the device along the connecting axis X.
  • Such sector defined by the bottom portion can be intended as a first sector of the extension of the device along such connecting axis X.
  • Such first sector is indicated by g1 only in Fig. 8 .
  • the cavity 211 or 211' or 211" passes through at least one part of such first sector, and therefore at least one part of the above-mentioned extension of the bottom portion 22 or 22' or 22" along the connecting axis X.
  • the cavity 211' or 211" passes through the entire above-mentioned first sector, and therefore the entire above-mentioned extension of the bottom portion 22' or 22" the connecting axis X.
  • Figs. 2c and 8 as regards the second implementation 1'
  • Fig. 3c as regards the third implementation 1".
  • Such extension of the spacing structure along such connecting axis X is to be intended as the sector, defined by the spacing structure, of the extension of the device along the connecting axis X.
  • Such sector defined by the spacing structure can be intended as a second sector of the extension of the device along such connecting axis X.
  • Such second sector is indicated by g2 only in Fig. 8 .
  • the cavity 211' or 211" passes through also a part of such second sector, and therefore also a part of the extension of said spacing structure 5' or 5" along said connecting axis X.
  • Such narrowing is also a narrowing of the resistant sectional area of said spacing structure 5' or 5".
  • Such narrowing is a reduction of the dimension along the connecting axis X of the above-mentioned resistant sectional area of the spacing structure 5' or 5".
  • the cavity is obtained starting from the lower outer surface 222 222', or 222" of the bottom portion of the base. This simplifies the obtainment of the weakened portion 21 or 21' or 21".
  • the spacing structure 5' or 5" comprises at least a first arm 51 and at least a second arm 52.
  • Such first arm 51 and second arm 52 are oriented on said resting surface S' or S" transversally one to the other.
  • the weakened portion 21' or 21" is located in an intersection zone between such first arm 51 and second arm 52.
  • the weakened portion 21' or 21" is located in an intersection zone at least between such first arm 51 and second arm 52.
  • the spacing structure 5" comprises also a third arm 53.
  • the third arm 53 is arranged with respect to the first arm 51 and to the second arm 52 so that such first arm 51, second arm 52 and third arm 53 define a T-shaped spacing structure 5', so as to divide the resting surface S" in the first surface portion S1", second surface portion S2", and third surface portion S3".
  • the weakened portion 21", in the third implementation 1 is located in an intersection zone between such first arm 51, second arm 52 and third arm 53.
  • the spacing structure 5' comprises the above-mentioned third arm 54 and also a fourth arm 54.
  • the fourth arm 54 is arranged with respect to the first arm 51, the second arm 52 and the third arm 53 so that such first arm 51, second arm 52, third arm 53 and fourth arm 54 define a cross-shaped spacing structure 5', so as to divide the resting surface 8" in the first surface portion S1', second surface portion S2', third surface portion S3' and fourth surface portion 84'.
  • the weakened portion 21' in the second implementation 1', is located in an intersection zone between such first arm 51, second arm 52, third arm 53, and fourth arm 54.
  • a process for laying a plurality of flooring elements E1-E4 comprises a first step in which the adhesive is laid. Such process comprises a step of setting up the device, and a step of reaching the operative position of the flooring elements E1-E4, so as to reach to the situation set forth in Figs. 4a , 4b and 4c .
  • Such process comprises a step of reaching the operative condition of the handle 4, so as to reach to the situation set forth in Fig. 5 .
  • Such process comprises a waiting step, during which one waits for the adhesive to set.
  • Such process comprises a step of removing the handle 4, by which one returns to the situation virtually similar to the one in Figs. 4a , 4b, and 4c , unless the adhesive has set.
  • the process comprises the application of a hit to the stem 3, and preferably to the impact body 32, so that such stem 3 separates from the base, so as to reach the situation set forth in Fig. 6 .
  • the base 2' or 2" can be intended as comprising the spacing structure 5' or 5".
  • weakened portion 21' of the base 2 is visible, which weakened portion 21' comprises the cavity 211' and defines a narrowing, along the above-mentioned connecting axis, which is not indicated in Fig. 8 , of the resistant sectional area of the base 2' and/or of the resistant sectional area of the spacing structure 5'.
  • Fig. 9 shows, in a longitudinal section, a fourth implementation of the levelling device. Such fourth implementation is indicated by 1A. Such fourth implementation differs from the first implementation shown in Figs. 1a, 1b, 1c , substantially only in a different shape of the impact body 32.
  • Fig. 10 shows, in a longitudinal section, a fifth implementation of the levelling device. Such fifth implementation is indicated by 1A'. Such fifth implementation differs from the second implementation shown in Figs. 2a, 2b, 2c , substantially only in a different shape of the impact body 32.
  • Fig. 11 shows, in a longitudinal section, a sixth implementation of the levelling device. Such sixth implementation is indicated by 1A". Such sixth implementation differs from the third implementation shown in Figs. 3a, 3b, 3c , substantially only in a different shape of the impact body 32.
  • FIG. 12A which is an enlarged detail of the implementation of Fig. 1c , and anyhow similarly also for the implementation illustrated in Fig. 9
  • Fig. 12B which is an enlarged detail of the implementation of Fig. 2c , and anyhow similarly also for the implementations of Figs.
  • a device 1, 1' for levelling and concomitantly spacing elements E1, E2, E3, E4 of a flooring such as tiles, briquettes, plates or the like, has therefore been arranged, in which said base 2; 2'; which comprises a weakened portion 21; 21', which weakened portion 21; 21' extends according to a respective longitudinal axis or direction L, in particular parallel to the impact body 32 of the device, and which is such as to have a maximum perpendicular thickness W at the central zone M and a minimum thickness at the opposite longitudinal ends E, E of the same weakened portion 21; 21'.
  • the present weakened portion is defined by a corresponding cavity 211; 211', which extends according to a respective longitudinal axis or direction L, and which, starting from the bottom face 222, 222' of the base 2, 2', has a minimum height, or depth, at the central zone M and a maximum height, or depth, at the opposite outermost longitudinal zones E, E.
  • the weakened portion when, due to the clamping action imparted by said handle 4, to obtain the levelling of the corresponding tiles, and thus on said base 2, 2', by the same stem 3, a corresponding traction in a direction perpendicular to the same base 2, 2' is exerted, the weakened portion is capable of exerting such a resistance as to ensure a safe carrying out of said clamping operation.
  • this configuration of the weakened portion is also such hat, when the stem 3, or the impact body 32, is subjected to a stress that bends the same stem 5, or the impact body 32, the onset of the breaking at a respective outermost zone E, E there of is facilitated, i.e., where such flexural action generates a greater stress level, and where the same weakened section is not so thick, thus weaker.
  • a thus-shaped weakened portion allows maximizing the perpendicular tensile strength caused by the handle 4 clamping the tiles against the base 2, while it allows minimizing the strength of the base 2, 2' against the flexural action that is imparted by a hit applied, for example, through a kick provided on the stem 3, or the impact body, 32, and directed parallel to said base 2.
  • said cavity 211 advantageously has, starting from the bottom 222 of the base 2, corresponding longitudinal faces F, F, which extend, in particular with a slightly downwardly convex profile, starting from the central zone M of the same cavity, towards the opposite longitudinal ends E, E of the same, and the height or depth of which gradually increases starting from a minimum height or depth, at said intermediate or central zone M, up to a maximum height at the respective longitudinal end zone E, E.
  • said weakening cavity 211 is completed by perpendicular end faces FE, FE, which extend from the respective outermost longitudinal ends E, E of the corresponding longitudinal faces F, F.
  • perpendicular end faces FE, FE which extend from the respective outermost longitudinal ends E, E of the corresponding longitudinal faces F, F.
  • the corresponding preferred implementation 1' of device has a respective cavity 211', which has a central zone M having a minimum height, or depth that is defined by a perpendicularly extending tooth, or projection D and which has a perpendicularly outermost face F0, in particular parallel to the bottom 222' of the base 2, and from the ends of which in the longitudinal direction corresponding perpendicular faces F1, F1 extend, from which in opposite longitudinal directions, starting from the respective end that is perpendicularly innermost or opposite the one at said outermost perpendicular face S0 of the same perpendicular face F1, F1, corresponding longitudinally extending faces F2, F2 extend, which face the bottom 222' of the base 2', i.e., downwardly, and the height, or depth of which gradually increases, , in particular linearly, starting from the zone at said perpendicular tooth D up to a maximum height, or depth, at the respective outermost longitudinal zone E, E.
  • the weakening cavity 211' is completed by perpendicular end faces SE, SE, which extend from the end of the respective longitudinal face S2, S2, which is opposite the end thereof that is locate at said perpendicularly extending tooth D.
  • a levelling, spacing system in accordance with the present description comprises the device in accordance with the present description and the handle.
  • a device and/or a system in accordance with the present description allows carrying out all the steps of laying flooring elements, thus obtaining a perfect planarity between the flooring elements and a perfect spacing between the same, avoiding that, once the stem that allowed to obtain the handle to block the elements in the operative position has been removed, material residues projecting from the base remain, and in particular between the same flooring elements, which should be subsequently removed.
  • flooring elements can be for example briquettes or tiles or plates or the like.
EP19187400.7A 2018-08-02 2019-07-19 A device for levelling and spacing elements of a flooring Active EP3604707B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT102018000007770A IT201800007770A1 (it) 2018-08-02 2018-08-02 Dispositivo livellatore e distanziatore per elementi di pavimentazione

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EP3604707A1 EP3604707A1 (en) 2020-02-05
EP3604707B1 true EP3604707B1 (en) 2020-06-03

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EP19187400.7A Active EP3604707B1 (en) 2018-08-02 2019-07-19 A device for levelling and spacing elements of a flooring

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IT (1) IT201800007770A1 (it)

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ES2904985B2 (es) * 2020-10-05 2022-11-17 Protosafe S L Sistema nivelador de cerámica mejorado

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Publication number Priority date Publication date Assignee Title
ITPD20110295A1 (it) * 2011-09-20 2013-03-21 Progress Profiles Spa Distanziatore livellante per la posa di piastrelle, mattonelle e simili con interposizione di fughe
US8429879B1 (en) * 2011-11-15 2013-04-30 New Standards Manufacturing Co. Mechanical edge setting system and method for setting tiles and tuning lippage
CN203394001U (zh) * 2013-08-12 2014-01-15 上海沃能实业有限公司 竖插式瓷砖定位水平安装装置
EP2966239B1 (en) * 2014-07-11 2017-05-03 FI.R.P. di Fiorese M. e C. s.n.c. A spacer element for covering elements

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IT201800007770A1 (it) 2020-02-02

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