A set of floor panels, which is suitable for forming a floor covering in herringbone pattern, wherein these floor panels are oblong rectangular; wherein the long as well as the short edges are provided with mechanical coupling means; and wherein the male coupling part on the short edge can be inserted into the female coupling part on the long edge in one and the same turning movement which is used to insert the male coupling part on the long edge into the female coupling part on the long or short edge.

A floor, wall or ceiling panel comprises a core and a decorative top layer provided on the core. The core comprises a magnesium oxide-based board material, and wherein the aforementioned panel, on at least two opposite edges, is provided with coupling means allowing that two of such panels can be interlocked at the respective edges.

Mechanical connection for panels at their edge sides (5, 10) which are to be connected to one another, wherein adjacent first and second panels (1, 2) can be locked in the horizontal and vertical direction by a substantially perpendicular joining movement, wherein, for vertical locking, a locking edge (8) is arranged on the first panel (1) and a locking element (6), which can be displaced relative to the panels (1, 2), is arranged on the second panel (2), which locking element can be displaced behind the locking edge (8) by a pivoting movement. The locking element (6) has a locking projection (17) for displacing behind the locking edge (8) and an arcuate guide arm (16) which is guided in a guide groove (7) of the second panel (2) and is designed to be partially withdrawn from the guide groove (7) with a rotary or pivoting movement of the locking element by virtue of a leg (18), which projects from the guide groove (7), of the locking element (6) coming into contact with the first panel (1) when being set down in a region below the locking edge (8).

A set of mutually lockable panels comprises a first panel having an edge including a male part and a second panel having an edge including a female part for receiving the male part of the first panel in unlocked condition of the panels. The male part has an outer side which, in locked condition of the panels, is directed to the second panel in a direction substantially parallel to the front face of the first panel, and an opposite inner side which is provided with a locking surface. The female part comprises a locking member, which is pivotable about a pivot axis that extends substantially parallel to the edge of the second panel and an actuator for rotating the locking member from its unlocked condition to a locked condition of the panels.

Ceramic and stone tiles are shown, which are provided with a locking system including a separate strip part connected to vertical and horizontal grooves formed in the tile edge. A set of ceramic or stone tiles including a first tile provided with a first edge and a second tile provided with a second edge wherein the tiles are provided with a locking system for locking the first edge to the second edge in a horizontal direction parallel with a tile surface and in a vertical direction perpendicular to the horizontal direction, said locking system includes a first and a second tongue and a strip part provided with a first and a second locking element.

Ceramic and stone tiles are shown, which are provided with a locking system including a separate strip part connected to vertical and horizontal grooves formed in the tile edge. A set of ceramic or stone tiles including a first tile provided with a first edge and a second tile provided with a second edge wherein the tiles are provided with a locking system for locking the first edge to the second edge in a horizontal direction parallel with a tile surface and in a vertical direction perpendicular to the horizontal direction, said locking system includes a first and a second tongue and a strip part provided with a first and a second locking element.

A set of floor panels, which is suitable for forming a floor covering in herringbone pattern, wherein these floor panels are oblong rectangular; wherein the long as well as the short edges are provided with mechanical coupling means; and wherein the male coupling part on the short edge can be inserted into the female coupling part on the long edge in one and the same turning movement which is used to insert the male coupling part on the long edge into the female coupling part on the long or short edge.

A set of floor panels, which is suitable for forming a floor covering in herringbone pattern, wherein these floor panels are oblong rectangular; wherein the long as well as the short edges are provided with mechanical coupling means; and wherein the male coupling part on the short edge can be inserted into the female coupling part on the long edge in one and the same turning movement which is used to insert the male coupling part on the long edge into the female coupling part on the long or short edge.

Floor panels are shown, which are provided with a mechanical locking system on long and short edges allowing installation with angling of long edges and where the short edge locking system has a displaceable tongue that is displaceable essentially in one direction from an inner unlocked position to an final locked position.

The disclosure relates to a panel comprising: a panel body extending in a longitudinal direction and a transverse direction; a retaining groove extending in the transverse direction in an end short side of the panel body; and a locking element which is inserted in the retaining groove substantially immovably, wherein, for an extension bo of the retaining groove in the transverse direction relative to a nominal width B of the panel body between a first edge extending in the longitudinal direction and a second edge of the panel body extending in the longitudinal direction, the following applies: 0.50b.sub.0/B0.97, in particular 0.75b.sub.0/B0.95, preferably 0.85B.sub.0/B0.93 and particularly preferably b.sub.0/B=0.900.02. An unbreakable and leak-proof panel having good and material-friendly locking is made possible by the retaining groove which extends over only a large portion of the short side and by the locking element immovably received in the retaining groove.