Shaped (concrete) slab kit
Patent 5224792 Issued on July 6, 1993. Estimated Expiration Date: 
July 6, 2010. 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.
July 6, 2010. 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 1058674 1364236 1384042 2095012 2210150 2368330 3421417 3557669 Ground covering slab Revetment grids and mats InventorAssigneeApplicationNo. 455012 filed on 12/22/1989US Classes:404/39, Bevel or incline edge52/603, With integral spacing projections52/604, Particularly related to adjacent module404/41InterfittingExaminersPrimary: Britts, Ramon S.Assistant: Schoeppel, Roger J. Attorney, Agent or FirmForeign Patent References
International ClassE01C 005/00Foreign Application Priority Data1989-01-05 DEAbstractShaped slabs (10) made of concrete for forming groundcoverings have spacers (15 to 20) on their edges with which the shaped slabs are braced against one another when the groundcovering is completed. This bracing of the shaped slabs (10) on their spacers (15 to 20) determines the permissible traffic weights such a groundcovering may carry. This means that different shaped slabs have to be provided for groundcoverings which are suitable for heavier traffic weights. The invention is concerned with creating a universal shaped slab (10) which can be used for different traffic weights and therefore suggests shaped slabs (10) the spacers (15 to 20) of which being arranged on the side faces (11 to 14) of said shaped slabs (10) such that depending on the relative positioning of the side faces (11 to 14) when laying the shaped slabs (10), said spacers (15 to 20) are either interlocking or abutting. This way, wide or narrow joints can alternatively be formed between adjacent shaped slabs (10).Field of SearchPAVEMENTCombined sheet and preformed module Blocks Including spacer means Integral Bevel or incline edge With separate interlocking member Interfitting Patterned Reinforced Including joint means With internal cavity for deformable filler With offset or keyed slab ends With integral spacing projections Particularly related to adjacent module Opposed discrete edger-spacers; e.g., hollow panels Elongated reinforcing | |
