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US Patent 4583879 - Paving method and grab for use in said method
US Patent Issued on April 22, 1986
Estimated Patent Expiration Date:
January 17, 2004Estimated 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.
Estimated Patent Expiration Date:
January 17, 2004Estimated 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.AbstractA 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. | 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 moduleField of Search404/73Handling or treating preformed modular unitExaminersPrimary: Novosad, Stephen J.Assistant: Letchford, John F. Attorney, Agent or FirmUS Patent References2095414, 2784923, 3098673, 4168130, Apparatus for placing paving elementsIssued on: 09/18/1979 Inventor: Barth , et al.4194853, Method and apparatus for producing a ground covering from individual paving stones Issued on: 03/25/1980 Inventor: Barth , et al.4320985, Apparatus for multiple setting of concrete paving blocks Issued on: 03/23/1982 Inventor: Kleinemas4383788, Arrangement for a machine particularly intended for handling loose signature packs Issued on: 05/17/1983 Inventor: Sylvander4479739Machine for laying shaped bricks Issued on: 10/30/1984 Inventor: Schweikert International ClassesE01C 19/52 (20060101)E01C 19/00 (20060101) B66C 1/42 (20060101) B66C 1/44 (20060101) Foreign Application Priority Data1983-01-21 NL |
