Paving stone, set of paving stones and device for producing the same
Patent 6263633 Issued on July 24, 2001. Estimated Expiration Date: 
April 26, 2020. 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 26, 2020. 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 1384042 Paving block arrangement for laying a paving-set arc assembly Interconnecting paving stones Concrete or ceramics elements Patent #: 5560173 InventorAssigneeApplicationNo. 530199 filed on 04/26/2000US Classes:52/596, OPAQUE STONELIKE MODULE52/392, Integral edge engaging spacing feature on tile52/607, Additional intersecting, transversing passage, or groove404/34Modules or blocks (preformed)ExaminersPrimary: Friedman, Carl D.Assistant: Nguyen, Chau Attorney, Agent or FirmForeign Patent References
International ClassesE04B 005/04E04C 002/04 Foreign Application Priority Data1997-10-27 DEAbstractThe invention relates to horizontally and vertically linked paving stones (10). According to the invention, projections (18) and recesses (19) are provided in the area of the bottom part (16) of the paving stones (10) used for a paved surface in order to link said paving stones horizontally and vertically. These projections and recesses engage with each other with a positive fit so as to interlock adjacent stones in a horizontal and vertical direction. The paving stones (10) are characterised in that the width of the joints (32) formed between adjacent paving stones (10) increases in a downward direction so as to form a gap which diverges downwards. This means that the material used for filling the joints can be introduced efficiently and reliably as far as the underside. | |
