Patent ID: 8033074

Claim:
A set of essentially identical floor panels, each of the floor panels comprising a first and a second connector, which are integrated with the floor panels and configured to connect a first floor panel to a second floor panel at adjacent edges, the first connector comprising an upwardly directed locking element at a first edge of one of the floor panels configured to cooperate with a locking groove in a corresponding second edge of the other of said floor panels for connecting said first floor panel with said second floor panel in a horizontal direction perpendicular to the adjacent edges, the second connector comprising a flexible tongue, of molded plastic, in a displacement groove in one of the first or second edges of one of the floor panels, the flexible tongue is configured to cooperate with a tongue groove in the other of the first or second edges of said floor panels for locking the floor panels together in a vertical direction, the flexible tongue being displaceable in the horizontal direction in the displacement groove and extending substantially the length of the panel, the flexible tongue comprising at least two protrusions at a first long edge of the tongue, bendable in a horizontal plane, and extending essentially in the horizontal plane, the at least two protrusions being spaced from each other in a longitudinal direction of the tongue, the longitudinal direction being parallel to the adjacent edges of the floor panels and perpendicular to the vertical direction, wherein the flexible tongue has a second long edge, which is configured to extend outside the displacement groove in a connected state of the floor panels, and the outer edge of the second long edge is essentially straight over substantially the entire length of the flexible tongue.