Road structure – process – or apparatus – Pavement – Modules or blocks
Patent
1992-05-04
1994-11-01
Neuder, William P.
Road structure, process, or apparatus
Pavement
Modules or blocks
404 42, E01C 500
Patent
active
053602854
DESCRIPTION:
BRIEF SUMMARY
The invention relates to a set of shaped stones and to a shaped stone for paving ground areas with wide gaps between the shaped stones.
Such shaped stones are frequently referred to as "lawn paving stones". They have spacing projections on the periphery thereof, so that comparatively wide gaps between the stones are created in the paved area. These gaps can be filled with soil, and grass may grow in these wide soil-filled gaps. The paved area thereby is given a pleasing, natural appearance, while the area covered therewith is nevertheless paved and can be driven on by vehicles. As an alternative thereto, it is possible to fill the wide gaps for instance with relatively coarse sand or fine gravel or stone chips. The result is in both cases that surface water at least to a large extent enters into the spaces between the stones and need not be discharged along the surface of the paved area into a drain channel.
The lawn paving stones described must be distinguished from so-called lawn grid plates which have inner openings or perforations for creating grass growth at these locations.
The set of shaped stones according to the invention comprises first shaped stones, and second shaped stones having a smaller plan view area than the first shaped stones, and a plurality of integral spacing projections for defining the wide gaps in the shaped stone pavement provided on the periphery of only one of the first and second shaped stones.
A ground area paved with the shaped stones of the shaped stone set presents a lively, pleasing appearance, since there is no monotonous repetition of one single format of shaped stones. The wide gaps do not extend rectilinearly or--for instance because of a non-rectilinear stone contour--in only slightly deviating manner from rectilinearity, but rather, gaps are obtained which are considerably laterally offset in their outline pattern. This enhances the paved ground area as regards the capability thereof of being driven on, which is of particularly great significance in view of the wide gaps. Furthermore, the set of shaped stones can be manufactured more easily and less expensively, since only one of the two kinds of shaped stones is provided with the spacing projections that are more difficult to manufacture.
According to a further aspect of the invention, a shaped stone according to the invention comprises at least one first partial shaped stone, at least one second partial shaped stone having a smaller plan view area than the first partial shaped stone, and connected to the first partial shaped stone by a material bridge integral with the partial shaped stones, and a plurality of integral spacing projections for defining the wide gaps provided on the periphery of only one of the two partial shaped stones.
In a ground area paved with this shaped stone, the same advantages result as regards appearance and gap pattern as those elucidated hereinbefore for the set of shaped stones according to the invention. As regards improved manufacturing possiblities, the afore-mentioned advantage also is present for the most part, since an essential part of the periphery of the shaped stone does not have spacing projections.
With regard to the preferred embodiments of the invention described hereinafter in further detail, the term "different configuration of the two shaped stones or partial shaped stones, respectively" is to be understood as a difference in configuration exceeding the aforementioned difference in size of the plan view areas. While the invention in its broadest form covers also first shaped stones and partial shaped stones, respectively, and second shaped stones and partial shaped stones, respectively, of equal geometrical configuration, for instance a larger square with a smaller square, a larger hexagon with a smaller hexagon, a larger octagon with a smaller octagon, a larger circle with a smaller circle, the development mentioned is directed to an alternation in the geometrical basic configuration.
When the first shaped stone or partial shaped stone is an octagon and the second sha
REFERENCES:
patent: 4185939 (1980-01-01), Barth et al.
patent: 4834575 (1989-05-01), Barth et al.
Betonwerk+Fertigteil-Technik, Heft Feb. 1979, pp. 71-74 "Technischer Stand der Einbauformen fur Betonsteinfertigungsautomaten" (Moulds for automatic block machines-today's state of technics), Rodon Sickerfahige Belage, Jun. 1989, p. 356.
Barth Gunther
von Langsdorff Harald
von Lansdorff Fritz
F. von Langsdorff Licensing Limited
Neuder William P.
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