Abstract: The invention relates to an artificial stone floor element with a basic shape that corresponds to the combination of a plurality of square basic elements, especially to an angular floor element. The floor element includes projections and recesses along its peripheral sides of the basic element when seen from the centre of the respective top face of the basic element is substantially point-symmetric with respect to its mid-point. The floor element in further embodiments includes a profile that consists of three projections and three recesses.

Abstract: The invention relates to an artificial stone floor element with a basic shape that corresponds to the combination of a plurality of square basic elements, especially to an angular floor element. The floor element includes projections and recesses along its peripheral sides of the basic element when seen from the centre of the respective top face of the basic element is substantially point-symmetric with respect to its mid-point. The floor element in further embodiments includes a profile that consists of three projections and three recesses.

Abstract: The invention relates to an artificial stone floor element with a basic shape that corresponds to the combination of a plurality of square basic elements, especially to an angular floor element. The floor element includes projections and recesses along its peripheral sides of the basic element when seen from the center of the respective top face of the basic element is substantially point-symmetric with respect to its mid-point. The inventive floor element is further characterized in that the profile consists of three projections and three recesses.

Abstract: A ground covering element having the basic shape of a square. All four basic sides of the around covering element have an engaging profile, each profile being symmetric with respect to a central axis of symmetry. Opposite engaging profiles are mirror images. Each engaging profile is complementary with the adjacent engaging profile. Each of the four corner regions of the ground covering element of a first type have a protrusion substantially the shape of a rectangular, isosceles triangle or of an area element similar to this triangle with curved legs. A ground covering element of a second type (42) is obtained by omitting the four protrusions from the ground covering element of the first type. The ground covering element of the second type may be laid together with additional ground covering elements of the second type or in combination with ground covering elements of the first type.

Abstract: The invention relates to a step stone for a stairway comprising an upper essentially horizontal stepping surface, a front essentially vertical setting surface, a rear back surface, which is located opposite the setting surface and which, with the stepping surface, forms an upper rear edge, and comprising an underside. A supporting section with a recess is provided in the front area of the underside of the step stone, whereby said recess enables the step stone to be supported on a step stone located directly underneath in order to form a stairway. To this end, the supporting section has a number of stepped recesses, which are offset with respect to one another and with which the step stone can be placed as desired onto the rear edge of the step stone located directly underneath.

Abstract: Ground covering element (2) having the basic shape of a square. On all four basic sides (4.1, 4.2, 4.3, 4.4), there is provided one engaging means (8.1, 8.2, 8.3, 8.4) each. Each of the engaging means is symmetric with respect to a central axis of symmetry (12). Opposite engaging means are mirror images of each other. Each engaging means is complementary with the engaging means on the two basic sides adjoining around the corner. On each of the four corner regions of the ground covering element, there is provided a protrusion (24) having substantially the shape of a rectangular, isosceles triangle or of an area element similar to this triangle with curved legs. By omission of the four protrusions (24), a ground covering element of the second type (42) is obtained which may be laid together with additional ground covering elements of the second type (42) or in combination with ground covering elements of the first type (2).

Abstract: The invention relates to a ground covering element for making a ground gutter, with an upper side where a groove portion is provided, a lower side, two oppositely disposed longitudinal sides extending in the longitudinal direction of the groove portion, a first face supporting a first registration section of the groove portion, and, in opposed relation, a second face supporting a second registration section of the groove portion, such that the faces each provide at least one projecting portion extending in the longitudinal direction of the groove portion, and at least one receptive portion shaped at recess in the longitudinal direction of the groove portion, in which projecting portion can be brought into engagement with a recessed portion of a neighbouring ground covering element, and each recessed portion can be brought into engagement with a projecting portion of a neighbouring ground covering element, such that an edge formed between the lower side and the first face has a configuration which is essential