Paving method and grab for use in said method
Patent 4583879 Issued on April 22, 1986. Estimated Expiration Date: 
January 17, 2004. 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.
January 17, 2004. 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 2095414 2784923 3098673 Apparatus for placing paving elements Method and apparatus for producing a ground covering from individual paving stones Apparatus for multiple setting of concrete paving blocks Arrangement for a machine particularly intended for handling loose signature packs Machine for laying shaped bricks Patent #: 4479739 InventorAssigneeApplicationNo. 06/571569 filed on 01/17/1984US Classes:404/73, Handling or treating preformed modular unit294/104, Pivoted jaw294/63.1, Hoist-line frame294/67.31, Pivotable about horizontal axis294/81.61, Pivoted gripping element294/87.1, Multiple grapples for multiple objects404/99, Block laying414/740, With fixed jaw member52/747.12Stone-like moduleExaminersPrimary: Novosad, Stephen J.Assistant: Letchford, John F. Attorney, Agent or FirmInternational ClassesE01C 19/52 (20060101)E01C 19/00 (20060101) B66C 1/42 (20060101) B66C 1/44 (20060101) Foreign Application Priority Data1983-01-21 NLAbstractA paving method and a grab for carrying out the method. A group or unit of paving stones or bricks, arranged in a selected pattern, is clamped, picked up, and laid on a prepared sand bed, in contiguity with paving components already laid, by releasing the clamping and pressing against said paving components. Tilting or jamming of stones or bricks is prevented by the exercise of a downward force on at least the border stones or bricks or border rows bordering the paving components referred to at least at the moment when the clamping is released.Field of SearchHandling or treating preformed modular unit | |
