Set of paving stones, particularly set of concrete paving stones

#The invention relates to a paving-stone set, especially a concrete paving-stone set for constructing garden layouts, paths or the like with paving stones of which the side faces and upper and lower faces are made plane and the transitional region between a side face and the upper or lower faces is made substantially sharp-edged or rounded.

#The external shaping of concrete paving stones is governed by both technical and visual factors. Thus, paving stones with plane side faces are produced in a square or rectangular basic chape, so that the paving stones, when laid in a composite structure over the entire surface, are supported against one another, thus ensuring a firm bond. Moreover, during laying, directional stability is improved in comparison with stones having curved outer contours, and a more efficient utilization of shape and of area is guaranteed. Furthermore, the advantage of plane outer contours is that the molds for producing the paving stones are cheaper. In addition, plane outer faces guarantee the greatest possible bundling capacity.

#However, a laid surface with completely plane outer contours gives the observer a very monotonous impression, and because of this known paving stones (U.S. Pat. No. 4,572,699) are provided with a specific paving-stone head structure. This can be obtained by means of rounded edges, drawn-down corner regions, wavy recesses or the like.

#Exemplary embodiments of the invention are illustrated in the drawing and explained in detail in the following description. In the drawing:

#FIGS. 1a and 1b show a larger rectangular stone in plan view and in a perspective view respectively,

#FIGS. 2a and 2b show a paving stone of square horizontal projection in plan view and in perspective view respectively,

#FIG. 1a shows a paving stone (1) which is rectangular in its basic cross-section and which has a length of L.sub.1 =238 mm and a width of b.sub.1 =178 mm. In conformity with this, the side length of the square stone (2) according to FIG. 2a amounts to L.sub.2 =b.sub.2 =178 mm. The length of the small rectangular stone (3) according to FIG. 3a amounts to L.sub.3 =178 mm and the width is b.sub.3 =88 mm. The lengths b.sub.1, b.sub.2, L.sub.2 and L.sub.3 are accordingly the same. The height of the paving stones (1), (2) and (3) amounts to approximately h.apprxeq.70 mm.

#FIG. 1a shows the various possibilities for forming the curves at the side faces (8 to 11) in the corner regions. The corner regions are designated by the reference symbols (4 to 7). At the same time, the actual shaping is marked by an unbroken line, and the shaping which is also possible, if appropriate, is marked by a dot-and-dash line.

#In the paving stone (1) (FIG. 1a), the corner (4) is designed as a so-called clothoid (31), that is to say the plane side face (8) has, both towards the left-hand corner region (4) and towards the right-hand corner region (5), a rounding which, as seen in plan view, is shaped as a curve with radii of curvature (R.sub.4, R.sub.4 ', R.sub.4 " and R.sub.5, R.sub.5 ', R.sub.5 ") decreasing constantly towards the corner regions. In the corner region (4), for example, the clothoid (31) starts on the side face (8) at a length L.sub.4 .apprxeq.40 mm with a radius R.sub.4 '.apprxeq.81 mm and ends on the adjoining plane side face (9) with a length of L.sub.5 .apprxeq.12 mm and a radius of R.sub.4 ".apprxeq.13 mm. Accordingly, the radius R.sub.4 becomes constantly smaller towards the corner region, this being characteristic for this shaping.