Patent ID: 8002494

Claim:
A concrete cast stone for use with other ones of said concrete cast stones for covering a surface, the concrete cast stone comprising an elongated shaped body having a longitudinal axis with said body tapering along said axis from opposed sides thereof to define a smaller tapering end resulting in a distinguishable orientation for said stone, said body having a peripheral contour of non-repetitive jagged shape for interlocking engagement of a plurality of the concrete cast stone, the peripheral contour having interlocking side sections and part-interlocking side sections such that said concrete cast stones placed side-by-side interlock by one or a combination of (1) matching the interlocking side sections in a linear arrangement of the concrete cast stones wherein the stones are aligned along their said longitudinal axis, and (2) matching some of the concrete cast stones with their said longitudinal axis transverse to said linear arrangement and partly interlocked with each other and said concrete cast stones of said linear arrangement to form a herringbone arrangement, said body having three pairs of side sections, with: (a) the side sections of different pairs being different from one another, (b) the side sections of a same pair generally being translated images of one another and being on opposite sides of said longitudinal axis of the body to define interlocking profiles, such that said concrete cast stones placed side-by-side interlock by matching equivalent pairs of side sections in the linear arrangement of the concrete cast stones, and (c) the adjacent side sections of a first pair and of a second pair of one said concrete cast stone being an interlocking image of the adjacent combined side sections of the second pair and of a third pair of two said stones, such that when a first row is defined by interlocking said concrete cast stones by said first pair, and a second row is defined by interlocking said concrete cast stones by said third pair, the first row and the second row are interlockable by the adjacent combined side sections of the first row interlocking with the adjacent side sections of the second row in the herringbone arrangement of the concrete cast stones.