Road structure – process – or apparatus – Pavement – Modules or blocks
Patent
1998-09-08
2000-01-18
Will, Thomas B.
Road structure, process, or apparatus
Pavement
Modules or blocks
404 34, 404 37, 404 41, E01C 506
Patent
active
060152435
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
FIELD OF THE INVENTION
The invention relates to a paving stone made from Concrete material, with a one-piece plane surface and two strip-like support attachments arranged vertically on each lateral surface, said support attachments forming joints between adjacent paving stones in the laid composite structure.
SUMMARY OF THE INVENTION
In connection with known paving stones of the type specified above, the support attachments rest against the lateral surfaces of adjacent paving stones when the latter are laid, forming spacing joints according to the association and design of the support attachments. The laying operations for installing such paving stones present problems in this connection because unintended shifting of the paving stones occurs in the composite structure parallel with the laying plane especially when laying is carried out with machines, causing the laying result to be uncertain and the laying pattern to be nonuniform and unclear. Furthermore, displacements of the paving stones require finishing work operations, which are found to be costly in terms of time and labor.
The problem of the invention is to create measures for avoiding unintended shifting parallel, with the laying plane when installing paving stones made from concrete material; for facilitating the laying operation; and for achieving safe retention of the joints.
Said problem is solved according to the invention in that two support attachments are symmetrically arranged on two adjacent lateral surfaces of the body of the paving stone with axis of symmetry s1 and s2, respectively, extending through the centers of the adjacent lateral surfaces with center spacings a' and a', respectively, relative to the axis, said support attachments having a thickness "b" and a width "c"; that on each of the lateral surfaces opposing each other, two support attachments are formed with a center spacing d' and, respectively, d', said attachments being symmetrically displaced in the direction of the associated corner areas and substantially having a thickness "b/2" and a width "c"; and that the support attachments having thickness "b" are, when the stones are laid in a cross-type composite structure, insertable between the support attachments designed with thickness "b/2" depending on the association of the lateral surfaces, or, when the stones are laid in a stretcher-type composite, are insertable between attachments with thickness b/2 and grip over support attachments with thickness b/2 in the manner of clamps. The formation of attachments with different thicknesses on the lateral surfaces of the paving stone facilitates the manual or mechanical installation due to displacement-free coherence arid engagement of the paving stones and laying of the latter in cross bond and stretcher-type configurations. Furthermore, the different thicknesses of the support attachments lead to exact laying patterns and their retention even if the composite pavement is subjected to high loads, for example motor vehicles driving thereon, etc. For forming the paving stone provision is made that the cross-sectional design of the paving stones is parallelogram-shaped, for example rectangular or in the form of a broad stone. Preferred are both types of support attachment, however, with a cross section designed in the form of a trapeze with equal legs, and with dimensions such that the support attachments have head areas with the same width "c" as well as a thickness "b" or "b/2", and lateral surfaces with the same angles of inclination "alpha" relative to the lateral surfaces of the body of the paving stone, said lateral surfaces of the attachments extending with increasing width toward the foot areas. A largely exact fit and play-free support of the paving stones in achievable in this way in the composite structure because the conicity of the support attachments promotes their fit to each other and contributes to shift-free lating. According to a further development of the invention, provision is made that paving stones are realizable wit
REFERENCES:
patent: Re3208 (1868-11-01), McKensie
patent: 4496266 (1985-01-01), Ruckstahl
patent: 4497858 (1985-02-01), DuPont et al.
patent: 5133620 (1992-07-01), Scheiwiller
patent: 5503498 (1996-04-01), Scheiwiller
Addie Raymond W
Will Thomas B.
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