Patent ID: 8793958

Claim:
Floor panel, for forming a decorative floor covering, wherein said floor panel is made of synthetic material; wherein said floor panel comprises two pairs of opposite edges; wherein the first pair of opposite edges comprises coupling means, as a result of which several of such panels can be mutually coupled to one another, wherein said coupling means provide for an interlocking in a direction perpendicular to a plane of the floor covering, as well as in a direction perpendicular to the edges concerned, and parallel to the plane of the floor panel; wherein the second pair of opposite edges comprises coupling means made in one piece with the panels, as a result of which several of such panels can be mutually coupled to one another, wherein said coupling means provide for an interlocking in a direction perpendicular to the plane of the floor covering, as well as in a direction perpendicular to the edges concerned, and parallel to the plane of the floor panel, said coupling means at said second pair of opposite edges comprising a tongue and a groove, said groove being bordered by an upper lip and a lower lip, and said coupling means comprising coupling parts which provide for the interlocking in the horizontal direction; wherein said upper lip has a distal end and said lower lip extends beyond the distal end of the upper lip; wherein said upper lip has a bottom side and wherein said tongue has a top side comprising a contact surface for co-operation with the bottom side of the upper lip; wherein said contact surface at the top side of the tongue is inclined with respect to the plane of the panel, said contact surface sloping down in a direction towards a tip of the tongue; wherein said coupling parts which provide for the interlocking in the horizontal direction comprise an upwardly directed part at the lower lip, the top side of this part defining a horizontal level; wherein the coupling means at the second pair of edges are configured to allow for assembly of two of such panels by means of a movement of rotation of one panel in respect to another panel; wherein the coupling means at the second pair of edges are configured such that in the coupled condition of two of such panels said inclined contact surface at the top side of the tongue is mainly located above said horizontal level; wherein said tongue has a tip portion being defined as a portion of the tongue that is located underneath the upper lip; and wherein said tip portion has a lower side which, in a coupled condition of two of such panels, is at least partially located underneath said horizontal level.