Patent ID: 8261504

Claim:
A set of essentially identical floorboards, each floorboard comprising: a front face and a rear face, a decorative joint portion at an edge and at the front face of the floorboard, and connectors arranged on at least two opposite edges for connecting the floorboard with a similar floorboard in a vertical direction, a horizontal direction, or both vertical and horizontal directions, wherein the decorative joint portion of an edge of a floorboard comprises an U or V-shaped groove and is configured to be joined with an adjacent edge of another floorboard, wherein the edge with the decorative joint portion is provided with a flat horizontal surface between the U or V-shaped groove and the outer edge of the floorboard and wherein the adjacent edge comprises a horizontally protruding part configured to overlap the edge of the floorboard with the decorative joint portion comprising the U or V-shaped groove and to cooperate with the flat horizontal surface and wherein the horizontally protruding part does not extend over the U or V-shaped groove.