Patent ID: 7596920
Filing Date: 2009-10-06
Classification: E04F

Abstract:
1. A floor panel comprising a rectangular plate which, at least at two opposite sides, is provided with coupling parts in the form of a tongue at the one side and a groove at the opposite side, the coupling parts comprising integrated mechanical locking means in the form of a protrusion shaped on the tongue and a tip bordering the groove which is formed by the extraction of the material along a longer arm of the groove, a bearing surface ( the protrusion ( a lower part of the lip ( an internal surface ( the bearing surface, the first radius, the third radius and the first acute angle being selected to ensure that, when one floor panel is coupled to another floor panel, said one floor panel and said another floor panel can displace freely when changes in humidity occur; whereby possibility of warping of a floor or the destruction of the couplings is substantially eliminated.