Paving elements for the water-permeable reinforcement of surfaces
Patent 5797698 Issued on August 25, 1998. Estimated Expiration Date: 
April 10, 2016. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
April 10, 2016. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 456378 572762 Paving stone, process for manufacturing same and device for carrying out the manufacturing process Paving stone Compound pavement stone Concrete blocks having through holes for water drainage Patent #: 5400561 InventorsAssigneeApplicationNo. 629890 filed on 04/10/1996US Classes:404/39, Bevel or incline edge404/42PatternedExaminersPrimary: Neuder, William P.Attorney, Agent or FirmForeign Patent References
International ClassE01C 005/00AbstractA paving element for the water-permeable reinforcement of surfaces, said paving element comprising a top surface, a bottom surface and a plurality of sides. One or more of the sides have vertical recesses extending from the top surface of the paving element to the bottom surface. The recesses are disposed asymmetrically about the mid points of the sides such that recesses of the adjacent sides of neighboring elements are offset from one another when the neighboring elements are laid in alignment, thereby avoiding alignment of the recesses. Alternatively, an offset of the recesses on neighboring stones is achieved by laying the elements in a displaced or staggered manner.Field of SearchBevel or incline edgeModules or blocks (preformed) Integral Patterned Construction block or brick type (20) Panel, tile or applique or floor, wall, roof, etc. (24) Symmetrical pattern or pattern unit (28) Three or more repeats, or uniform configuration, about axis Consisting entirely of material having uniform thickness On two axes Consisting entirely of aterial having uniform thickness Consisting entirely of material having uniform thickness | |
