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US4496266A Expired / Lapsed US ⏱️ 0.0 years remaining

Curved like paving stone element for use in setting a curved paving

Assignee: Kronimus and Sohn GmbH and Co KG
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Filing: 1982-12-06
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Granted: 1985-01-29
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Expires: 2002-12-06
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Abstract

Abstract The invention relates to a curved like paving stone element for setting of a curved paving, characterized in that the curved element is limited by an outer circular curve having a radius and an inner circular curve having the same radius with the center points of the circular curves disposed on a radial straight at a distance from each other corresponding to the largest width of the curved element. The curved element consists of two outer stones and a center stone of about the same curvature length, where the outer stones are separated into three individual stones by means of non-continuous separating joints and the center stone is separated into either two or three individual stones. The curved element is asymmetrically offset with respect to the radial straight in such a manner that the outer edge of an outer stone is smaller than the opposite outer edge of the other outer stone and the size of this difference corresponds to about the width of the stone with the smaller outer edge.

Inventors

  • 👤 Willi Ruckstuhl

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-07 08:59
CPC Classifications
E; E01; E01C; E01C5/00; E01C2201/00; E01C2201/02; E01C2201/16; E01C2201/162

Claims Analysis

Total Claims: 7
Claim 1
Independent Claim 218 words
In a curved like paving stone element for setting of a curved paving, wherein the curved element is defined by an outer circular curve and an inner circular curve having equal radii, the center points of the circular curves being disposed on a radial straight, being the line including these points, the improvement comprising the center points of the circular curves being disposed at a distance which corresponds to the largest width of the curved element, the curved element including two outer stones and a center stone of about the same curvature length, the outer stones having upper surfaces subdivided into three segments and the center stone having an upper surface subdivided into at least two segments, said subdivisions formed by means of grooves, wherein the curved element is asymmetrically offset with respect to the radial straight in such a manner that the outer edge of an outer stone is similar than the opposing outer edge of the other outer stone, the size of the offset corresponding to about the width of the individual stone having the smaller outer edge, whereby a second curved element having an outer stone corresponding to the outer stone of the first curved element can be positioned adjacent to said first curved element so that its outer stone is located in said offset.
Claim 2
Dependent Claim 218 words
In a curved like paving stone element for setting of a curved paving, wherein the curved element is defined by an outer circular curve and an inner circular curve having equal radii, the center points of the circular curves being disposed on a radial straight, being the line including these points, the improvement comprising the center points of the circular curves being disposed at a distance which corresponds to the largest width of the curved element, the curved element including two outer stones and a center stone of about the same curvature length, the outer stones having upper surfaces subdivided into three segments and the center stone having an upper surface subdivided into at least two segments, said subdivisions formed by means of grooves, wherein the curved element is asymmetrically offset with respect to the radial straight in such a manner that the outer edge of an outer stone is similar than the opposing outer edge of the other outer stone, the size of the offset corresponding to about the width of the individual stone having the smaller outer edge, whereby a second curved element having an outer stone corresponding to the outer stone of the first curved element can be positioned adjacent to said first curved element so that its outer stone is located in said offset.
Claim 3
Dependent Claim 19 words
A paving stone element in accordance with claim 1, wherein said center stone is subdivided into three individual stones.
Claim 4
Dependent Claim 42 words
A paving stone element in accordance with claim 1, wherein the inner and outer radii of the outer and inner defining circular curves are equal to four times the distance separating the center points of the circular curves on the radial straight.
Claim 5
Dependent Claim 59 words
A paving stone element in accordance with claim 3, wherein the width of the span of the outer circular curve between adjacent paving stone elements is six times the distance separating the center points of the circular curves on the radial straight and the total length of the span of the outer circular curve is 6.4271 times such distance.
Claim 6
Dependent Claim 70 words
A paving stone element in accordance with claim 4, wherein the curvature angle of the outer circular curve is 107.5437°, the curvature angle of the inner circular curve is 88.6227°, the curve length of the outer circular curve is 7.5082 times the distance separating the center points of the circular curves on the radial straight and the curve length of the inner circular curve (Ki) is 6.1870 times such distance.
Claim 7
Dependent Claim 19 words
A paving stone element in accordance with claim 1, which further includes hidden distance cams provided on said stones.

References Cited (Backward Citations)

BE515227A Cited
CH123291A Cited
DE573198C Cited
US2138270A Cited
US3343468A Cited
DE2707558A1 Cited
GB2012332A Cited
DE3216082A1 Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1988-01-29 1988-07-30 1989-01-29 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1992-01-29 1992-07-30 1993-01-29 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1996-01-29 1996-07-30 1997-01-29 $7700.00 Window Closed / Lapsed

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