Patent ID: 6865856
Filing Date: 2005-03-15
Classification: E04F

Abstract:
1. A plastic flooring comprising: a first flooring having an upper surface, a lower surface, and a first side surface with a concave portion; and a second flooring having a flat upper surface, a lower surface, and a second side surface with a convex portion, said second flooring assembled to the side surface of the first flooring by inserting the convex portion into the concave portion, said concave portion and the convex portion each comprise, wherein the abutting surfaces of the concave portion and the convex portion being parallel to the upper surfaces of the first and the second floorings, and both of the slanted surface and the perpendicular surface of the concave portion being disposed facing with gaps between both of the slanted surface and the perpendicular surface of the convex portion so that a heat expansion tolerance portion is provided between the concave portion and the convex portion.