Patent attributes
A polygonal paving stone has a plurality of substantially planar sides extending perpendicularly between parallel upper and lower faces of the stone. A row of substantially identical and outwardly projecting narrow coupling members of a predetermined member width on each of the sides are separated by spaces of a predetermined space width. These narrow members are positioned on the respective sides such that when a plurality of the paving stones are fitted together with their upper faces generally coplanar the narrow coupling members of confronting sides of adjacent paving stones fit between one another A single wide coupling member on each of the sides has a width a greater than that of the member width of the narrow members and smaller than the space width so it can fit between two of the narrow members of a confronting side of an adjacent paving stone.
