Abstract: A building panel comprising a device for connecting the building panel to at least one further similar building panel on a sub-surface. The building panel is intended to be lowered against an already installed building panel. Each building panel has first and second profiled side surfaces, at each of which an abutting surface is disposed, which is perpendicular to a usable surface or base surface of the building panel.

Abstract: A building panel comprising a device for connecting the building panel to at least one further similar building panel on a sub-surface. The building panel is intended to be lowered against an already installed building panel. Each building panel has first and second profiled side surfaces, at each of which an abutting surface is disposed, which is perpendicular to a usable surface or base surface of the building panel.

Abstract: A panel-shaped, rectangular construction panel that includes: a visible face; a base face located opposite to the visible face; two first shaped side faces that run parallel to each other, and two other, second shaped side faces, also parallel to each other, that run perpendicular to said side faces, wherein all of the side faces are bordered by the visible face and the base face; and at least one pair of locking mechanisms that are incorporated in the side faces of the construction panel, are compatible with each other and, when assembled, work together to allow for a separable connection between like construction panels.

Abstract: The floor panel (1) which, at least at two opposite sides, is provided with coupling parts in the form of a tongue (6) at one side and a groove (5) at the opposite side, wherein the coupling parts are provided with mechanical locking elements in the form of a protrusion (7), which is formed at the tongue, and a lip (8) bordering the groove, is distinguishable by that the bearing surface (9) of the lip (8) at the longer arm of the groove (5) is concave on the arc with the first radius (r1) whose point of engagement is situated at the upper edge of the panel (1) whereas the protrusion (7) of the tongue (6) has in its cross-section the form of a circular sector with the third radius (r3) which is shorter than the first radius, wherein the lower part of the lip (8) and the lower part of the panel (1) from the side of the circular protrusion (7) have the second bearing surfaces (9?) which are inclined in relation to the vertical plane in one direction, at the first acute angle (?).

Abstract: The floor panel (1) which, at least at two opposite sides, is provided with coupling parts in the form of a tongue (6) at one side and a groove (5) at the opposite side, wherein the coupling parts are provided with mechanical locking elements in the form of a protrusion (7), which is formed at the tongue, and a lip (8) bordering the groove, is distinguishable by that the bearing surface (9) of the lip (8) at the longer arm of the groove (5) is concave on the arc with the first radius (r1) whose point of engagement is situated at the upper edge of the panel (1) whereas the protrusion (7) of the tongue (6) has in its cross-section the form of a circular sector with the third radius (r3) which is shorter than the first radius, wherein the lower part of the lip (8) and the lower part of the panel (1) from the side of the circular protrusion (7) have the second bearing surfaces (9?) which are inclined in relation to the vertical plane in one direction, at the first acute angle (?).