Road structure – process – or apparatus – Pavement – Modules or blocks
Patent
1992-12-03
1994-08-30
Neuder, William P.
Road structure, process, or apparatus
Pavement
Modules or blocks
404 42, E01C 502
Patent
active
053421426
DESCRIPTION:
BRIEF SUMMARY
The invention relates to an angular paving stone of solidifying material for paving areas, comprising two outer sides, two inner sides and two face sides.
Angular paving stones are known. They may be characterized to the effect that two stone legs extending at an angle with respect to each other are integrally united with each other at the location where the legs meet. Angular paving stones provide the advantage that, when laid in interlocking fashion, i.e. when a plurality of like angular paving stones are laid beside each other, a mutually interlocking arrangement of the angular paving stones results. This is advantageous for the carrying capacity of the paved area and when a group of angular paving stones arranged in composite or interlocking manner is grasped by a clamping gripper engaging laterally on the outside, and is laid in this manner as a group; in doing so, the risk is minimized that individual stones inadvertently fall down from the grasped group before the group is laid as a whole. However, it is to a certain degree disadvantageous with respect to angular paving stones that the joining region of the two stone legs is subject to comparatively high loads when lateral forces act on the free ends of the stone legs. Therefore, there is a tendency towards the risk that cracks starting from the inner corner, where the two inner sides meet, will be caused in case of excessive loads. In addition thereto, the known angular paving stones have the disadvantage that they allow water to seep away only to an insignificant extent--through the gaps between adjacent stones.
It is the object of the invention to make available an angular paving stone which renders possible a considerably increased discharge of water into the paved area than it would be possible through the gaps between angular paving stones laid adjacent each other, and which presents a broken-up, interesting, but nevertheless uniform and calm appearance when laid in interlocking fashion.
To meet this object, the angular paving stone according to the invention is characterized in that quarter recesses are provided at the five outer corners of the angular paving stone where the two outer sides meet and where outer sides meet face sides and inner sides meet face sides; that half recesses are provided at the center of the outer sides of the angular paving stone; and that a three-quarter recess is provided at the inner corner of the angular paving stone where the two inner sides meet; the quarter recesses, the half recesses and the three-quarter recess being provided such that, when like angular paving stones are laid adjacent thereto, full recesses are formed at all locations by mutual supplementation for discharging water into the layer located underneath.
With the angular paving stone according to the invention, the at first seemingly bold path was taken to weaken the stone by material removal due to the comparatively large three-quarter recess at the inner corner right in the joining region of the two stone legs. It surprisingly has turned out that this material removal has no negative effects on the strength of the angular paving stone. This is attributed to the fact that the critical inner corner point proper has been abandoned so that this concrete starting point for stone cracks is eliminated.
Configurations with equally long stone legs and/or with stone legs extending at right angles to each other are preferred for the angular paving stone according to the invention. Preferred, practical materials for the angular paving stone are cement- or plastics-setting concretes or brick materials. These materials have solidified when the angular paving stone is ready for being laid. The angular paving stone preferably can be laid in a plurality of laying patterns, as will be shown by the embodiments hereinafter, and results, with an arbitrary laying pattern selected, in the desired supplementation of the quarter recesses, half recesses and three-quarter recesses so as to form full recesses. The angular paving stone preferably does not have holes or o
Barth Gunther
von Langsdorff Fritz
von Langsdorff Harald
F. von Langsdorff Licensing Limited
Neuder William P.
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