WO2021239196A1

WO2021239196A1 - Tile levellers, a kit of tile levellers and a method for non-invasive levelling of tiles

Info

Publication number: WO2021239196A1
Application number: PCT/DK2021/050160
Authority: WO
Inventors: Jesper Sandy OLSEN; Claus Selchau HANSEN
Original assignee: T L S Aps
Priority date: 2020-05-26
Filing date: 2021-05-25
Publication date: 2021-12-02

Abstract

An extendable tile leveller (1) for non-invasive levelling of tiles, the extendable tile leveller (1) comprising - a longitudinal body (10) having a plane upper surface (12) and two ends (201,2011); - support legs (30) with support heads (32) adapted for supporting the longitudinal body (10), and at least one support leg (30) comprising vertical adjustment means (40) for adjusting a vertical position of the support head (32) - wherein the longitudinal body (10) comprising a first outer body part (501) with a first central channel (521) and an inner body part (58) being slideable within the first channel (521) for adjusting an extent of the longitudinal body (10). a first central channel (521) and an inner body part (58) may have at least five sides. The extendable tile leveller can be adapted to be a comer tile leveller, in which the longitudinal body is divided into a first and a second comer body parts (601, 6011) by a hinge (70).

Description

Tile levellers, a kit of tile levellers and a method for non-invasive levelling of tiles Field of the Invention

The present invention relates to tile levellers for non-invasive levelling of tiles, where in the tile levellers are adapted to be able to level tiles around comers and along walls having different lengths.

The present invention relates to a tile leveller kit having tile levellers for different pur pose such that a skilled person can level tiles in rooms or bathrooms having any lay out.

The present invention relates to a method for non-invasive levelling of tiles.

Background of the Invention

At present, there are many different tile levellers and methods for levelling of tiles. However, none of these enable levelling around corners or along walls having any length. As a consequence, the levelling of tiles must be performed in stages, which makes the process susceptible to errors.

This is especially the cases in bathrooms or bathroom niches wherein the floor has a small gradient towards one or more outflow.

Furthermore, some of the disclosed tile levellers and methods involve an invasive pro cedure. In US7070667 a tile leveller is disclosed wherein one or more screws are screwed into the wall. This makes the process slow due to the invasive procedure of screwing and if an error is made then a hole is made unnecessary. The tolerance for errors is thus small because an error cannot be rectified easily.

The tile leveller only works along straight walls and even then the levelling of tile at the wall ends might be done without the support of the tile leveller if the tile leveller is not a multiple of the wall length.

US2004206027 discloses a device for non-invasive levelling of tile. The device is floor mounted for levelling a first row of wall tiles in a shower stall or a bathtub stall. The device comprises two pylons in opposite ends of the tile leveller connected to a longitudinal body, wherein the longitudinal body is displaceable along each pylon in order to level the tiles. The device is shown in figure 1 and describes the scope of the art.

The device does not work around corners and a typical bathroom has several comers. The device is only able to level a small part of the wall, which increases the risk of drift during the entire procedure.

ES 1067009 U discloses an extendable tile leveller comprising at least a first and a second hollow tube having a flat top surface. The tube portion being configured to telescopically slide within the second tube. The ends of the tubes comprise channel openings for coupling to additional extendable tile levellers or to comer tile levellers. The tile leveller also comprises support legs.

Object of the Invention

It is an object of the invention to provide an extendable tile leveller and a corner tile leveller, which are designed to be mutually compatible such that they can be com bined to an extendable comer tile leveller which overcomes all of the drawbacks of the prior art.

It is an object of the invention to provide a kit of tile levellers having the necessary components necessary for levelling tiles in any room having any design layout.

It is an object of the invention to provide a method for non-invasive levelling of tiles.

It is an object of the invention to provide a simple assembly or kit of elements that are easy to assemble and to disassemble.

It is an object of the invention to provide a stable and precise and yet flexible, in terms a variety of combinations, wall length and corners, tile leveller system that is as com pact as possible so as to being easily transportable and usable in a variety of room situations ranging from small “cornered” rooms to larger rooms. Description of the Invention

An object of the invention is achieved by an extendable tile leveller for non-invasive levelling of tiles. The extendable tile leveller may comprise a longitudinal body having a plane upper surface and two ends.

The plane upper surface ensures an easy support when levelling tiles. The extendable tile leveller may comprise support legs with support heads adapted for supporting the longitudinal body, and at least one support leg comprising vertical ad justment means for adjusting a vertical position of the support head.

The support legs ensure that the height of the tile leveller can be adjusted and that any floor gradient can be compensated in an easy manner. A separate spirit level may be used to ensure that the extendable tile leveller is in a horizontal level.

The vertical adjustment means may be a threaded rod wherein the support head is complementary to the threaded rod, such that the support head can be displaced along said threaded rod.

The longitudinal body may comprise a first outer body part with a first central channel and an inner body part being slideable within the first channel for adjusting an extent of the longitudinal body.

This enables the length of the longitudinal body to be changed. This is important, when several extendable tile levellers are to be positioning against a wall or niche, because the summarized length of the several extendable tile levellers can be made equal to any wall length as the lengths are adjustable.

This also makes it possible for the extendable tile leveller to work around corners as the extendable tile leveller is made to extend to said wall comer and another extenda ble tile leveller can be positioned around the corner. This will reduce the risk of drift of the tiles at said comers compared to the prior art. The extendable tile leveller may comprise friction means to lock the inner body part relative to the first outer body.

The frictions means may be a bolt or wing bolt connected to the first outer body and being displaceable into the first channel, such that the bolt can frictionally engage the inner body part.

Thereby, the extendable tile leveller becomes more stable.

The fall of a bathroom floor is typically 1-2 cm pr. 100 cm.

In an aspect, the first central channel may have at least five sides and the inner body part may be complementary to the first central channel.

As such the construction becomes more stable.

The at least five sides have several positive effects. The fifth side can be used for con trol of the orientation of the first central channel and the inner body, such that the in ner body can only be inserted into the central channel in one way. This is helpful when working with a tile leveller kit, where one or more tile levellers may need to be assembled and disassembled.

The easier way to assemble and disassemble the tile levellers will most importantly make it easier to transport a kit comprising several tile levellers to and from the work site.

In an aspect, the at least five sides may comprise two pairs of parallel sides and a fifth side interconnecting two sides.

This embodiment is simple to produce while enabling the technical effect discussed above with control of the orientation. In an aspect, a fifth side may comprise one or more through-going threaded holes and one or more complementary screws, the screws being adapted for frictionally engag ing an anvil of the inner body part.

The control of the orientation due to the fifth side and the through-going threaded holes and one or more complementary screws ensures that the screws will always be oriented in the same direction. Thereby, the screws of the tile leveller will always be oriented in the same direction such that the user can orient them away from the wall, when assembling a tile leveller train.

Furthermore, since the inner body part is complementary to the inner channel, the screw will engage a fifth side of the inner body, which fifth side will act as an anvil. This will in effect increase the contact area between the screw and inner body part which increases the friction per turn of the screw, thereby making it easier to secure the inner body part relative to the inner channel.

In an aspect of the invention the longitudinal body comprises a second body part hav ing a second central channel and being opposite to the first outer body part, the inner body part being slideable within the second channel.

Thereby, the maximum extend of the extendable tile leveller is increased further.

The second body part may have all the same technical features previously presented for the first body part.

Typically, the first and second body part are identical or nearly identical as the ends may differ. Thus, the first and second body parts will define a common plane, which allows for the placement of a spirit level.

In an aspect of the invention, one or both of the ends of the longitudinal body may comprise a channel opening. Thus, the extendable tile leveller may have a channel opening opposite to the channel opening of the first central channel for receiving a second inner body part or to be hinged together with another longitudinal body.

In an embodiment, the extendable tile leveller comprises a second body part as previ ously described. In this case each first and second body part may have opposite chan nel openings for receiving inner body parts or to be hinged with another longitudinal body thereby modifying the extendable tile leveller.

In an aspect of the invention, one or both of the ends may comprise a stud or a recess, wherein the stud and the recess are complementary.

The respective stud and recess enable the extendable tile leveller to be connected with another tile leveller with a complementary recess or stud. Thereby, it becomes easier to make a tile leveller train along the wall of the room or bathroom as the individual parts are connected.

This enables the extendable tile leveller to be used around corners as the stud or recess can be positioned at said corner and be connected to a complementary recess or stud.

In an embodiment, a lip extends from one or both ends along the longitudinal direc tion of the longitudinal body, wherein the stud extends perpendicular from the lip or the recess is positioned in the lip.

If both ends comprise a lip, then the lips are mutually displaced such that one lip can be positioned on top of the other lip. This is shown in figure fig. 3A and 3C.

In an aspect of the invention, the stud and/or recess may be milled out.

This greatly increases the precision of the stud and/or recess, thus the clearance is re duced and the tile levellers can be placed in a tile leveller train with greater precision making the train more stable. The clearance is removed when the frictions means is used such as tightening of bolts or wing bolts. The stud and/or recess may be made of a metal, but preferably of aluminium.

In an embodiment the extendable tile leveller is made of aluminium as it is a light weight metal with great weight to strength ratio.

The stud and/or recess may be made of plastic.

The stud and/or recess may be part of a plug body, wherein the plug body have oppo site to the stud or recess a plug adapted to be inserted into a channel end.

An example of such a plug body is shown in figure 4.

An object of the invention is achieved by a comer tile leveller for non-invasive level ling of tiles.

The corner tile leveller may comprise a longitudinal body having a plane upper sur face and two ends.

The plane upper surface ensures an easy support when levelling tiles.

The corner tile leveller may comprise support legs, at least one support leg having support heads adapted for supporting the elongated body and vertical adjustment means for adjusting a vertical position of the support head.

The support head may be a clip-on type making it easy to mount and to dismount whilst at the same time being light weight and saving material and space.

The support head may be U-formed spring steel.

The support legs ensure that the height of the tile leveller can be adjusted and that any floor gradient can be compensated in an easy manner. A separate spirit level may be used to ensure that the extendable tile leveller is in a horizontal level. The vertical adjustment means may be a threaded rod wherein the support head is complementary to the threaded rod, such that the support head can be displaced along said threaded rod.

The longitudinal body may comprise divided into first and second comer body parts by a hinge. The hinge enables the comer tile leveller to be used on comers.

The first and second comer body parts may be identical to the first and second outer body parts of the extendable tile leveller as this enables a mutual modification which will be described later in the application.

In an aspect of the invention, both of the corner body parts may comprise a central channel.

This enables each comer body part to receive an inner body part as described for the extendable tile leveller with the same technical effects.

The hinge may comprise first and second leafs positioned within the respective central channels. The first and second leafs are connected to the respective corner body parts. Thereby the hinge is connected to the inside of the corner body parts, which enables the corner tile leveller to be folded such that the corner tile leveller in folded state has a minimised volume.

This is important because when several comer tile levellers are to be transported in a kit, then the entire volume must be optimised.

The at least five sides have several positive effects. The fifth side can be used for con trol of the orientation of the first central channel and the inner body such that the inner body can only be inserted into the central channel in one way. This is helpful when working with a tile leveller kit, where one or more tile levellers may need to be as sembled and disassembled. The easier way to assemble and disassemble the tile levellers will most importantly make it easier to transport a kit comprising several tile levellers to and from the work site.

This embodiment is simple to produce while enabling the technical effect discussed above with control of the orientation.

In an aspect, a fifth side may comprise one or more through-going threaded holes and one or more complementary screws, the screws being adapted for frictionally engag ing an anvil of the inner body part.

In an aspect of the invention, one or both of the ends of the longitudinal body may comprise a channel opening.

Thus, the corner tile leveller may have a channel opening for receiving an inner body part or to be hinged together with another longitudinal body of the extendable tile lev eller, thereby the corner tile leveller becomes a hybrid or an extendable corner tile leveller. The corner tile leveller may comprise friction means to lock the inner body part rela tive to the corner outer body.

The frictions means may be a bolt or a wing bolt connected to the first outer body and being displaceable into the channel, such that the bolt can frictionally engage the inner body part.

In an aspect of the invention, one or both of the ends may comprise a stud or a recess, wherein the stud and recess are complementary.

The respective stud and recess enable the comer tile leveller to be connected with an other tile leveller with a complementary recess or stud. Thereby, it becomes easier to make a tile leveller train along the wall of the room or bathroom as the individual parts are connected.

That is the tile leveller parts or bodies with studs and recesses may be linear pieces and coupled together to extend linearly. At the same time, the same tile leveller parts or bodies with studs and recesses may be coupled together to form an angle around a comer. Thus, the same elements may be used and even assembled and disassembled in a very easy way. Again, the elements have the same cross section and can easily be packed and transported.

This enable the corner tile leveller to be used around comers as the stud or recess can be positioned at said corner and be connected to a complementary recess or stud.

In an embodiment of the corner tile leveller, the stud and/or recess may be milled out. This greatly increases the precision of the stud and/or recess, thus the clearance is re duced and the tile levellers can be placed in a tile leveller train with greater precision making the train more stable.

The clearance is removed when the friction means is used such as tightening of bolts or wing bolts.

The stud and/or recess may be made of a metal, but preferably aluminium.

In an embodiment the extendable tile leveller is made of aluminium as it is a light weight metal with great weight to strengthen the ratio.

The stud and/or recess may be made of plastic.

The stud and/or recess may be part of a plug body, wherein the plug body has opposite to the stud or recess a plug adapted to be inserted into a channel end.

An example of such a plug body is shown in figure 4.

An object of the invention is achieved by an extendable comer tile leveller for non- invasive levelling of tiles.

The extendable comer tile leveller may comprise a corner tile leveller having at least one channel opening and an extendable tile leveller.

The inner body part of the extendable tile leveller is slideable inserted into the channel opening of the comer tile leveller.

Thereby, a tile leveller is provided which can be bent around corners while allowing the extent of the tile leveller to be changed.

This double effect greatly increases the usability of the extendable corner tile leveller. It is further advantages if the cross-sections of the outer body parts and the comer body parts are identical, while allow the ends of the outer body parts and the corner body parts to have channel openings, studs and recesses. This allows for a great flexi bility when assembling different tile leveller trains.

The extendable corner tile leveller can be assembled in various different ways due to common design of the corner tile leveller and the extendable tile leveller.

As an example two extendable tile levellers as previous described can be modified by interconnecting the two extendable tile levellers by a hinge at respective ends of their longitudinal bodies. Thereby, an extendable corner tile leveller is provided.

Each of the longitudinal bodies may have an end with a channel opening wherein the hinge comprises first and second leafs positioned within the respective central chan nels and being connected to each of the longitudinal bodies.

Each of the different tile levellers may comprise a spirit level to ensure a horizontal extend.

An object of the invention is achieved by a tile leveller kit for non-invasive levelling of tiles, the tile leveller kit comprising at least one of

- one or more extendable tile levellers;

- one or more corner tile levellers; and/or

- one or more extendable corner tile levellers.

Thereby, a person setting the tile may transport the tile leveller kit to the room or bath room and be able to make the necessary tile leveller train as demanded by the layout of the room.

In an embodiment, the longitudinal bodies of the respective one or more extendable tile levellers and one or more corner tile levellers and one or more extendable corner tile levellers may have a rectangular cross-section i.e. the first and second body parts are rectangular. Although it is not necessary the first and second channel and the inner body part may also have a rectangular body part to simplify the different tile levellers.

The effect being that the person levelling the tile will need several tile levellers. The rectangular cross-section enables the tile levellers to be packed with a high density such that the kit may be packed in a single case.

The rectangular cross-section of the inner body parts may have a width between 2-3 cm, or preferred 2.5 cm and a channel height between 3-5 cm or preferred 4 cm.

The rectangular cross-section of the outer body parts and/or comer body parts may have a width of 2-4 cm, or preferred 3 cm and a height between 4-5 cm or preferred 4.5 cm.

The tile leveller may be made of aluminium as it can be milled with great precision and aluminium is a light weight material.

In an aspect, the tile leveller kit may comprise

- a first pair of extendable tile levellers which may have one or more of the previously described technical features. The first pair can be extendable tile levellers as disclosed in figures 12-14; and

- a second pair of extendable tile levellers, which may have one or more of the previ ously described technical features, and which is longer than the first pair. The second pair can be extendable tile levellers as disclosed in figures 12-14.

Tests on various bathrooms have shown that a kit as described above can solve the problem related to tile levelling in a plurality of bathrooms, while being easily trans portable.

The tile leveller kit can be improved by two additional outer body parts for forming ends of the tile leveller train, which ends will typically be around a corner.

In an embodiment, the second pair of extendable tile levellers comprises an extenda ble tile leveller having a stud in both ends of the longitudinal body, and an extendable tile leveller comprising a stud in one end and a recess in another end of the longitudi nal body.

In an embodiment, the first pair of extendable tile levellers, comprises a stud in one end and a recess in another end of the longitudinal body, wherein the extendable tile levellers are mirror images of each other.

An object of the invention is achieved by a method for non-invasive levelling of tiles, the method comprising:

- providing a tile leveller kit;

- assembling and positioning the tile levellers against walls of a room;

- adjusting a level of the levellers to a second tile row;

- placing tiles along the second tile row.

The room may be a bathroom having a floor gradient and the tile levellers may need to accommodate a bathroom niche.

The assembling and positioning of the tile levellers against the wall or niche will form a tile leveller train specifically adjusted for the walls of a room.

The claimed method specifically mentions that the level of the levellers is adjusted to a second tile row. In theory, the levellers could be adjusted to any level above the sec ond tile row i.e. third tile row or fifth tile row or any other tile row other than the first.

However, there would be no benefit in adjusting the levellers to any other row and adjusting the second tile row requiring the shortest support legs possible.

Description of the Drawing

Fig. 1 discloses a prior art tile leveller;

Fig. 2 discloses an extendable tile leveller;

Fig. 3 discloses a stud and recess;

Fig. 4 discloses another embodiment of the stud and recess;

Fig. 5 discloses a corner tile leveller;

Fig. 6 discloses a hinge; Fig. 7 discloses an extendable comer tile leveller;

Fig. 8 discloses the extendable comer tile leveller and how it is made of an extendable tile leveller and a corner tile leveller;

Fig. 9 discloses a support leg; Fig. 10 discloses a tile leveller kit positioned in a tile leveller train;

Fig. 11 discloses an extendable comer tile leveller with a spirit level; and Fig. 12 discloses an embodiment of an extendable tile leveller;

Fig. 13 discloses an embodiment of the extendable tile leveller from an end view;

Fig. 14 discloses a tile leveller kit; and Fig. 15 discloses a tile leveller kit positioned in a tile leveller train.

Detailed Description of the Invention

Fig. 1 discloses a prior art tile leveller for non-invasive levelling of tiles. The tile lev eller is disclosed by US2004206027. The device is floor mounted for levelling a first row of wall tiles in a shower stall or a bathtub stall. The device comprises two pylons in opposite ends of the tile leveller connected to a longitudinal body, wherein the lon gitudinal body is displaceable along each pylon in order to level the tiles.

The device is not designed to form a tile leveller train comprising interconnected tile levellers. This causes the usability to be very limited and the device is not designed to level tiles around comers.

Fig. 2 discloses an extendable tile leveller 1. In Fig. 2A the extendable tile leveller 1 is retracted and in Fig. 2B the extendable tile leveller 1 is extended.

The extendable tile leveller 1 comprises a longitudinal body 10 having a plane upper surface 12 and two ends 201, 2011.

The longitudinal body 10 comprises a first outer body part 501 with a first central channel 521 and an inner body part 58 being slideable within the first channel 521 for adjusting an extent of the longitudinal body 10.

The disclosed embodiment of the longitudinal body 10 further comprises a second body part 5011 having a second central channel 5211. The second body part 5011 is op- posite to the first outer body part 501. The inner body part 58 being slideable within the second channel 5211.

The extendable tile leveller 1 will also function with only the first outer body part 501.

The support legs 30 are not shown in fig. 2, however the support legs 30 shown in figure fig. 9 can be used.

The ends 201, 2011 of the longitudinal body 10 comprise respectively a lip 26 with a stud 22 and a lip 26 with a recess 24. The lips 26 are off set relative to allow them to overlap as shown in figs. 3 and 4.

Thus, the extendable tile leveller 1 can be connected to complementary tile leveller 1, 2, 3.

The first outer body part 201 and second outer body part 2011 comprises friction means 54 in the form of a bolt going through and into the respective central channels 521, 5211 for creating a frictional connection with the inner body part 58.

Fig. 3 discloses a stud 22 and recess 24.

Fig. 3A and 3C disclose an interconnection of a stud 22 and a recess 24.

The stud 22 extends perpendicular to a lip 26 extending from an end 20 of a longitudi nal body 10.

The recess 24 is formed in a lip 26 extending from another end 20 of another longitu dinal body.

This design allows the respective longitudinal bodies to be angled relative to each other.

Fig. 3C clearly shows the precision of the stud and recess. The clearance is reduced significantly when connecting two tile levellers 1, 2 3 thereby increasing the precision when levelling tiles. Fig. 4 discloses another embodiment of the stud 22 and recess 24.

The disclosed embodiment is made using a 3D printer and it only discloses lips 26, the stud 22 and the recess 24.

The recess 24 is deeper than the embodiment in fig. 3 and enables a stronger frictional connection between the stud 22 and the recess 24.

Fig. 5 discloses a comer tile leveller 2.

The corner tile leveller 2 comprises a longitudinal body 10 having a plane upper sur face 12 and two ends 201,2011. The longitudinal body 10 is divided into first and sec ond comer body parts 601, 6011 by a hinge 70. This enables the comer tile leveller 2 to level tiles around comers.

The ends 201, 2011 of the longitudinal body 10 both comprise a lip 26 with a stud 22. In another embodiment the ends 201, 2011 could be channel openings or recesses or a combination of stud 22, recess 24 or channel openings 28.

Thus, the corner tile leveller 2 can be connected to complementary tile leveller 1, 2, 3.

The support legs 30 are not shown in fig. 5, however the support legs 30 shown in fig. 9 can be used.

Fig. 6 discloses a hinge 70.

A corner tile leveller 2 comprises comer body parts 601, 6011. Each comer body part 601, 6011 comprises a central channel 621, 6211 interconnected by the hinge 70.

The hinge 70 comprises first and second leafs 721, 7211 positioned within the respec tive central channels 621, 6211. The first and second leafs 721, 7211 are connected to the respective corner body parts 601, 6011. The leafs 721, 7211 attached within the central channels 621, 6211 which reduces the total volume of the comer tile leveller 2 to be collapsed such that each comer body parts 601, 6011 is positioned next to each other in parallel. This enables the comer tile leveller 2 to be transported in an efficient manner.

Fig. 7 discloses an extendable comer tile leveller 3.

The disclosed extendable corner tile leveller 3 is in effect a corner tile leveller 2 com bined with two extendable tile levellers, this is shown in greater detail in fig. 8.

The extendable corner tile leveller 3 comprises a longitudinal body 10 having four outer body parts 501, 5011, 50III, 50IV paired in two.

Each outer body part 501, 5011, 50III, 50IV comprises a central channel 521, 5211, 52III, 52IV.

The longitudinal body 10 comprises a first inner body part 581 inside the central chan nels 521, 5211, and a second inner body part 5811 inside the central channels 52III, 52IV.

The outer body part 5011 and the outer body part 50III are interconnected by a hinge 70.

The hinge 70 enables the extendable corner tile leveller 3 to function around corners, and the inner and outer body parts 501, 5011, 50III, 50IV, 581, 5811 enable the extenda ble corner tile leveller 3 to be extendable. Thus, a single extendable corner tile leveller 3 can be used for various purposes.

Fig. 8 discloses the extendable corner tile leveller 3 and how it is made of two extend able tile levellers 1 and a comer tile leveller 2.

The corner tile leveller 2 corresponds to the figure shown in fig. 5 with the difference that the ends 201, 2011 are channel openings 281, 2811, and the comer tile leveller 2 comprises friction means 54. Each of the extendable tile levellers 1 comprises an outer body part 501, 50IV with a first central channel 52 (not shown) and an inner body part 58 (not shown) being slideable within the first channel 52 for adjusting an extent of the extendable tile level lers 1.

The extendable corner tile leveller 3 is formed by inserting each of the inner body parts 58 in respective channel openings 281, 2811.

The outer body parts 501, 5011 and the corner body parts 601, 6011 have the same cross sections such that they can be used together.

Fig. 9 discloses a support leg 30. The support leg 30 comprises a support head 32 adapted for supporting the longitudinal body 10 of any of the tile levellers 1, 2, 3.

The support leg 30 comprises vertical adjustment means 40 for adjusting a vertical position of the support head 32. In the present case the vertical adjustment means 40 is a threaded rod 42, wherein the support head 32 can be displaced by rotation.

The support head 32 is L or U-shaped, which forms a good connection with a rectan gular tile leveller.

Fig. 9B discloses an extendable support leg 30, however the support head 32 cannot be displaced to the same degree.

Fig. 10 discloses a tile leveller kit 90 positioned in a tile leveller train 5. The chosen layout of the tile leveller train 5 could correspond to a bathroom niche.

The tile leveller kit 90 comprises an extendable corner tile leveller 3 as previously described the extendable comer tile leveller 3 is made from a corner tile leveller and two extendable tile levellers.

However, the extendable comer tile leveller 3 could also be viewed as two extendable tile levellers 1 (as shown with the dotted line), wherein the two extendable tile level lers 1 are hinged together. The extendable corner tile leveller 3 have ends 20 with a stud 22 and recess 24 only one end 2011 in the bottom left corner of the figure is shown.

The end 201 in the upper right corner is connected to a corner tile leveller 2 which is in an unfolded position.

The end 2011 in the bottom left comer of the figure is connected to an extendable tile leveller 1.

The comer tile leveller 2 and the extendable tile leveller 1 are both connected to outer body parts 50, which will be an extendable tile leveller 1 if an inner body part 58 is slid into the central channel 52.

Fig. 11 discloses an extendable comer tile leveller 3 with spirit levels 591, 5911.

The extendable corner tile leveller 3 otherwise have the same features as the extenda ble corner tile leveller 3 as disclosed in figure 7.

Fig. 12 discloses an embodiment of an extendable tile leveller 1 for non-invasive lev elling of tiles.

The extendable tile leveller 1 comprises a longitudinal body 10 having a plane upper surface 12 and two ends 201,2011. The longitudinal body 10 is shaped to enable not shown support legs 30 to support the longitudinal body 10. Examples of such support legs 30 have been shown and discussed earlier. The longitudinal body 10 comprises a first outer body part 501 with a first central channel 521 and an inner body part 58 be ing slideable within the first channel 521 for adjusting an extent of the longitudinal body 10. The longitudinal body 10 further comprises a second body part 5011 having a second central channel 5211 and being opposite to the first outer body part 501, the inner body part 58 being slideable within the second channel 5211.

The first central channel 521 and preferably also the second channel 5211 each has at least five sides, wherein the inner body part 58 is complementary. The inner body part 58 may be complementary by having the same overall shape as the central channels 521, 5211, i.e. by also having at least five sides.

In the present embodiment each fifth side 531, 5311 comprises a through-going thread- ed hole 57 and one or more complementary screws 56, the screws 56 being adapted for frictionally engaging an anvil 64 of the inner body part 58.

Fig. 13 discloses an embodiment of the extendable tile leveller 1 from an end view. The extendable tile leveller 1 can be assembled and disassembled as shown in fig. 12.

The extendable tile leveller 1 comprises a longitudinal body 10 having a plane upper surface 12 and two ends 201,2011. The longitudinal body 10 is shaped to enable not shown support legs 30 to support the longitudinal body 10. Examples of such support legs 30 have been shown and discussed earlier. The longitudinal body 10 comprises a first outer body part 501 with a first central channel 521 (not visible in the figure) and an inner body part 58 being slideable within the first channel 521 for adjusting an ex tent of the longitudinal body 10. The longitudinal body 10 further comprises a second body part 5011 having a second central channel 5211 and being opposite to the first outer body part 501, the inner body part 58 being slideable within the second channel 5211.

The first central channel 521 and the second channel 5211, each has least five sides, wherein the inner body part 58 is complementary. The inner body part 58 may be complementary by having the same overall shape as the central channels 521, 5211, i.e. by also having at least five sides.

In the shown embodiment, the at least five sides comprise two pairs of parallel sides and the fifth side 531, 5311 interconnecting two sides. This is only shown for the cen tral channel 5211, however, the fifth side 531 can be identified at the end 201.

In the present embodiment each fifth side 531, 5311 comprises a through-going thread ed hole 57 and one or more complementary screws 56, the screws 56 being adapted for frictionally engaging an anvil 64 of the inner body part 58. Fig. 14 discloses a tile leveller kit 90.

The tile leveller kit 90 comprises an extendable tile leveller II as shown in figure 12, where the extendable tile leveller II comprises a stud 22 and recess 24.

The tile leveller kit 90 comprises an extendable tile leveller III as shown in figure 12, where the extendable tile leveller II comprises a stud 22 and recess 24. However, the lip and the recess are reversed relative to the extendable tile leveller II. The tile leveller kit 90 comprises an extendable tile leveller 1III similar to the embod iment shown in figure 12, however, both ends comprise a stud 22. The extendable tile leveller 1III has a length which is longer than the extendable tile leveller II and the extendable tile leveller III. The tile leveller kit 90 comprises an extendable tile leveller 1IV as shown in figure 12, where the extendable tile leveller 1IV comprises a stud 22 and recess 24. The extend able tile leveller 1IV has a length substantially equal to the extendable tile leveller l lll. The tile leveller kit 90 comprises two outer body parts 501, 5011 each having a recess 24 for acting as end pieces when being assembled into a tile leveller train 5. Since the two outer body parts 501, 5011 are end pieces, the body parts 501, 5011 do not need to have a central channel. The extendable tile levellers 1 do not need to be the same lengths or be in pairs of same lengths, however, tests have shown that a kit 90 as shown in figure 14 can solve most levelling problems.

The tile leveller kit 90 comprises a number of support legs 30 with a number of threaded rods 42 for increasing the height of the support legs.

The entire tile leveller kit 90 can be transported in a single bag as shown in the figure. Fig. 15 discloses a tile leveller kit 90 positioned in a tile leveller train. The extendable tile leveller 1 is connected to an outer body part 501 at one end 201 and another ex tendable tile leveller 1 at the other end 2011. The outer body part 501 can in use extend out of a shower cabinet.

The shown extendable tile leveller 1 corresponds to the extendable tile leveller II in figure 14.

Claims

1. An extendable tile leveller (1) for non-invasive levelling of tiles, the extendable tile leveller (1) comprising

- a longitudinal body (10) having a plane upper surface (12) and two ends (201,2011);

- support legs (30) with support heads (32) adapted for supporting the longitudi nal body (10), and at least one support leg (30) comprising vertical adjustment means (40) for adjusting a vertical position of the support head (32);

- wherein the longitudinal body (10) comprising a first outer body part (501) with a first central channel (521) and an inner body part (58) being slideable within the first channel (521) for adjusting an extent of the longitudinal body (10).

2. The extendable tile leveller (1) according to claim 1, wherein the first central chan nel (521) has at least five sides and the inner body part (58) is complementary to the first central channel (521).

3. The extendable tile leveller (1) according to claim 2, wherein the at least five sides comprise two pairs of parallel sides and a fifth side (53) interconnecting two sides.

4. The extendable tile leveller (1) according to claim 2 or 3, wherein the fifth side (53) comprises one or more through-going threaded holes (57) and one or more comple mentary screws (56), the screws (56) being adapted for frictionally engaging an anvil (64) of the inner body part (58).

5. The extendable tile leveller (1) according to anyone of the previous claims, wherein the longitudinal body (10) comprises a second body part (5011) having a second cen tral channel (5211) and being opposite to the first outer body part (501), the inner body part (58) being slideable within the second channel (5211).

6. The extendable tile leveller (1) according to anyone of the previous claims, wherein one or both of the ends (201, 2011) of the longitudinal body (10) comprises a stud (22) or a recess (24), wherein the stud (22) and the recess (24) are complementary.

7. The extendable tile leveller (1) according to claim 6, wherein the stud (22) and/or recess (24) is/are milled out.

8. A comer tile leveller (2) for non-invasive levelling of tiles, the corner tile leveller (2) comprising - a longitudinal body (10) having a plane upper surface (12) and two ends

(201,2011);

- support legs (30), at least one support leg (30) having support heads (32) adapted for supporting the elongated body (10) and vertical adjustment means (40) for adjusting a vertical position of the support head (32); - wherein the longitudinal body (10) being divided into first and second corner body parts (601, 6011) by a hinge (70).

9. The comer tile leveller (2) according to claim 8, wherein the first central channel (521) has at least five sides and the inner body part (58) is complementary.

10. The corner tile leveller (1) according to claim 9, wherein the at least five sides comprise two pairs of parallel sides and a fifth side (53) interconnecting two sides.

11. The corner tile leveller (1) according to claim 9 or 10, wherein the fifth side (53) comprises one or more through-going threaded holes (57) and one or more comple mentary screws (56), the screws (56) being adapted for frictionally engaging an anvil (64) of the inner body part (58).

12. A corner tile leveller (2) according to anyone or more of claims 8-11, wherein both of the corner body parts (601, 6011) comprises a central channel (621, 6211), and the hinge (70) comprises first and second leafs (721, 7211) positioned within the re spective central channels (621, 6211) and being connected to the respective corner body parts (601, 6011).

13. A comer tile leveller (2) according to anyone or more of claims 8-11, wherein one or both of the ends (201, 2011) of the longitudinal body (10) comprises a stud (22) or a recess (24), wherein the stud (22) and the recess (24) are complementary.

14. An extendable comer tile leveller (3) for non-invasive levelling of tiles, wherein the extendable comer tile leveller (3) comprises

- a comer tile leveller (2) according to claim 13 having at least one channel opening (28); and - an extendable tile leveller (1) according to claim 1, 6 or 7; wherein the inner body part (58) is slideable inserted into the channel opening (28) of the comer tile leveller (2).

15. A tile leveller kit (90) for non-invasive levelling of tiles, the tile leveller kit (90) comprising at least one of

- one or more extendable tile levellers (1) according to anyone of claims 1-7;

- one or more corner tile levellers (2) according to anyone of claims 8-13

- one or more extendable corner tile levellers (3) according to claim 14.

16. The tile leveller kit (90) according to claim 15 comprising

- a first pair of extendable tile levellers (1) according to anyone of claims 1-7

- a second pair of extendable tile levellers (1) according to anyone of claims 1-7, which is longer than the first pair.

17. Method for non-invasive levelling of tiles, the method comprising:

- providing a tile leveller kit (90) according to claim 15 or 16;

- assembling and positioning the tile levellers (1, 2, 3) against walls of a room;

- adjusting a level of the levellers (1, 2, 3) to a second tile row;

- placing tiles along the second tile row.