Patent ID: 7856784
Filing Date: 2010-12-28
Classification: E04B,E04F,F16B,Y10T

Abstract:
1. A building panel comprising: an upper surface terminating at a distal end, the upper surface comprising at least one material selected from the group consisting of a thermoplastic foil, a paper impregnated with a thermosetting resin, and a thermosetting laminate; a plurality of sides defining a perimeter thereof, at least one side of each panel being provided with a groove; at least a second side of each panel being provided with a tongue; at least one of the tongue and groove having at least one protrusion, thereby forming a first locking element; at least one complementary depression forming a second locking element, configured to cooperate with said at least one protrusion; wherein the first and second locking elements lock the panel to an adjacent panel when the panel and the adjacent panel are joined together.