Paving stone construction set
November 9, 2013. 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 ReferencesSystem of prefabricated concrete elements for constructing paths Curved like paving stone element for use in setting a curved paving Paving stone Set of paving stones, particularly set of concrete paving stones Paving stone set Paving block arrangement for laying a paving-set arc assembly Circular paving stone arrangement Interlocking ground slab element and method Patent #: 5186574 InventorApplicationNo. 146173 filed on 11/09/1993US Classes:404/38, Integral404/42PatternedExaminersPrimary: Bagnell, DavidAssistant: Lisehora, James A. Attorney, Agent or FirmForeign Patent References
International ClassE01C 005/06Foreign Application Priority Data1992-03-11 DEAbstractA concrete paving stone adapted to be disposed in circular and elongate paving configurations. The paving stone includes at least two side walls and a substantially planar upper face, each of the side walls being an arched side wall and including an elevated face at a center region thereof which comprises an abutting surface and two associated wedge surfaces adjoining the abutting surface on both sides thereof. The associated wedge surfaces extend from the abutting surface to an associated arched side wall. The elevated face further extends across a substantial portion of a length of the associated arched side wall and is effective for creating a fixed abutment between adjoining arched side walls of adjoining paving stones in a paving configuration. | |
