A device for leveling and aligning tiles and method for leveling and aligning tiles are disclosed. In one embodiment, the leveling device includes a body and two spaced and parallel strip members extending transversely from the body. Each of the spaced and parallel strip members extend to the front and rear of the body. Two opposing lateral open windows are formed in the body. A breakaway section is defined along the body. A wedge device is provided for penetrating one or more of the two opposing lateral open windows and exerting a force on the tiles for leveling them relative to each other.

According to one embodiment, the tile leveling device includes a base having a top surface and a bottom surface. The base includes a projection extending upwardly from the top surface. The tile leveling device further includes a stem detachably coupled to the top surface of the base. The stem includes a lower portion and an upper portion having a threaded portion. The lower portion is wider than the upper portion.

A tile positioning device comprising: a base having a top surface for receiving an underside of a tile and a bottom surface for being positioned on an underlying surface; an upwardly extending stem that is breakably or frangibly attached to the base, the stem including an upper portion for receiving an impact to break away the stem from the base and a lower portion for breakable attachment to the base wherein an opening is provided in the lower portion of the stem for receiving a wedge and wherein the lower portion of the stem further comprises: a connecting portion for connecting the stem with the top surface of the base; and a bridging portion extending between the connecting portion and the upper portion; wherein thickness of the connecting portion is less than thickness of the bridging portion.

A demountable wall system includes a frame component that has a base. The demountable wall system also includes a biasing element and a cover that is removably coupled to the frame component. The cover includes a cover body and an engagement projection extending outwards from the cover body, and the biasing element is configured to bias the cover such that the engagement projection engages the frame component.

A knob is screwable to a tile spacer-leveler for together defining a tile alignment device. The knob comprises (i) a body, (ii) elastically-deformable connectors on the knob body, (iii) first and second fixing elements comprising respective threaded slots, supported by the connectors and arrangeable in a first arrangement wherein the threaded rod of a tile separator can be inserted into and removed from the threaded slots without screwing in a second arrangement in which the rod insertion and removal takes place only by screwing, (iv) a blocking element separated from the knob body for elastically deforming the connectors to change the arrangement of the first and second fixing elements to (a) insert the rod between the threaded slots of the first and second fixing means without screw-tightening thereof, (b) screw the knob to the threaded rod with the fixing elements in the second arrangement to align the tiles, and (c) remove the threaded rod without screwing.

A device for leveling and aligning tiles and method for leveling and aligning tiles are disclosed. In one embodiment, the leveling device includes a body and two spaced and parallel strip members extending transversely from the body. Each of the spaced and parallel strip members extend to the front and rear of the body. Two opposing lateral open windows are formed in the body. A breakaway section is defined along the body. A wedge device is provided for penetrating one or more of the two opposing lateral open windows and exerting a force on the tiles for leveling them relative to each other.

A levelling spacer system for laying tiles for coating surfaces, including a block equipped with a base positionable posteriorly to a laying surface of at least two adjacent tiles and flanked with respect to a flanking direction, and a separating element rising from the base at right angles thereto capable of being inserted between side walls facing said two flanked tiles, the separating element including a through window, a shaped edge of which is placed at a distance from the base greater than a maximum height of a visible surface of the tiles from the base itself, a pressure wedge to be inserted at least partially into the through window between the visible surface of the tiles and the shaped edge along a crossing direction parallel to the flanking direction. and a plate to be interposed between the pressure wedge and the visible surface of the tiles with a surface facing the base. The plate is configured to be inserted at least partially into the through window between the visible surface of the tiles and the pressure wedge along the crossing direction.

The present invention relates to a protective device for ceramic pieces, said device suitable for resting on the upper surface of at least two ceramic pieces (40, 41) and which forms a bearing surface for a tightening element (204, 305) of a spacer-leveller device (20, 30) for ceramic pieces. The protective device comprises: a lower bearing surface (101) on the ceramic pieces (40, 41) to be installed; an upper surface (102) comprising a first circular track (106) for possible bearing of a first threaded tightening element (204) of a first spacer-leveller device (20); a second diametrical track (109), forming a possible bearing surface, with the possibility of longitudinal displacement, for a second tightening element (305), by way of a wedge, of a second spacer-leveller device (30); and a lateral surface (103) with projections (104) for manually holding the protective device (10).

A demountable modular wall system for a building having a floor and a ceiling. The system includes panels having a top end and a bottom end with a movement direction defined perpendicularly therebetween. A height adjustment mechanism is positioned between the bottom end of one of the panels and the floor. The height adjustment mechanism has a mounting bracket that sandwiches the bottom end of the one of the panels. The height adjustment mechanism includes a receiving cylinder that threadingly engages with a first member. The first member also threadingly engages with a second member positioned between the first member and the floor. The first member is moveable relative to the receiving cylinder in the movement direction such that rotation of the first member selectively adjusts the height of the one of the panels.

A tile leveling and alignment system for use in aligning and leveling a plurality of tiles, comprising a tile leveling and aligning device, a vertical leveling hand device, a horizontal leveling device and an optional slip ring/spacer device. The tile leveling and aligning device comprising a base portion integrally coupled to a stem portion projecting upwards from the base portion. The base portion adapted for engaging a bottom surface of a number of tiles to be leveled and aligned. The stem portion comprising a central aperture and one or more spacer legs or fins, each spacer leg extending transversely from the central aperture. Each spacer leg defining a joint width between adjacent tiles to be leveled and aligned. Each spacer leg dividing the tile leveling and aligning device into equal sized areas of common shape and defining a joint width between adjacent tiles to be leveled and aligned.