Paving stone, process for manufacturing same and device for carrying out the manufacturing process
OwnerRolf Scheiwillerinventor
Life of this patent
Estimating the term…
Abstract
The paving stone comprises a recess which divides the stone into an upper part having a smaller circumference and a lower part with a greater circumference. The lower part, having also a greater height than the upper part, comprises a ribbing or other vertically oriented interlocking means and the upper part can have the appearance of a natural stone. The shape of either the upper or the lower part may be chosen arbitrarily and independent from each other. The molding box for the manufacturing of such paving stones is made of two pieces joined together and comprises the corresponding recess. The lower piece comprises an insert for forming interlocking means.
Claims11
A paving stone comprising:
- a lower portion having at least three vertical faces with each vertical face having a upper edge, and at least one of the faces having a plurality of vertical, regularly-spaced ribs;
- and
- an upper portion, integrally connected atop said lower portion;
- having a plurality of vertical sides equal in number to the vertical faces and respectively integral with and offset inward from the upper edge of a respective one of the vertical faces, the upper portion further having an upper surface, said upper portion having a horizontal cross section of different configuration than a horizontal cross section of said lower portion.
A paving stone having vertical and horizontal coordinate axes comprising:
- a lower portion having at least three lateral sides which define a horizontal cross-sectional perimeter, vertical height and a plurality of vertically oriented ribs projecting from at least one of said lateral sides in mutually spaced relationship, so that any one of said ribs interdigitates with any rib of another of said stones when both of said stones are placed in side-by-side, abutting relationship;
- an upper portion having a smaller and differently-configured horizontal cross-sectional perimeter and less vertical height than said lower portion;
- and
- a recess defined by said paving stone between said upper and lower portions.
A paving stone having vertical and horizontal coordinate axes comprising:
- a lower portion having at least three lateral sides which define a horizontal cross-sectional perimeter, vertical height, and a plurality of vertically oriented ribs projecting from at least one of said lateral sides in mutually spaced relationship so that any one of said ribs interdigitates with any rib of another of said stones when both of said stones are placed in side-by-side, abutting relationship, for resisting horizontal shearing while allowing for variable offset of abutting stones during placement thereof;
- an upper portion having a smaller and differently-configured horizontal cross-sectional perimeter and less vertical height than said lower portion, said upper portion defining randomly dispersed indentations for simulating the appearance of a natural stone;
- and
- a recess defined by said paving stone between said upper and lower portions.
Dependencies are inferred from the claim text.