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US 4,249,358 AGranted
Process and installation for moulding paving stones or slabs
Assignee"P.B.I." Procedes et Brevets Industriels
InventorLuc Thieffry
Life of this patent
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Assignee"P.B.I." Procedes et Brevets Industriels
InventorLuc Thieffry
Estimating the term…
Method and apparatus for forming and laying paving blocks in which interchangeable grids are provided of dissimilar configuration comprising a plurality of mould cavities each enclosing one or more fixed centers of the modules of the pattern, whatever is in the conformation of the said grids. The modular and transformable ramming assembly comprises a plurality of fixed securing points distributed to correspond to the fixed centers of the modules of the mould pattern and intended for the removable fitting of ramming plates of forms and dimensions analogous with those of the underlying cavities of the selected grid. The changing of forms and/or dimensions of the moulded paving stones or slabs is effected by replacing one grid by another differently conformed grid and by fixing new removable ramming plates corresponding to the forms and/or dimensions of the cavities of the new grid, by means of the said fixing points.
Process for the laying of products obtained from an apparatus for molding paving stones or slabs from moldable material, wherein the apparatus comprises a grid member carrier, a unitary grid member of a set of different shaped interchangeable grid members removably mounted on said grid member carrier, said grid member, said carrier, and a bottom plate forming a mold having a plurality of mold cavities, a support member, and a plurality of removable ramming plates mounted on the support member above the grid member, the plates being interchangeable and selected in order that they correspond in shape and dimensions to the shape and dimensions of the underlying mold cavities, said process comprising grasping, transferring and depositing plates composed of individual modular paving stones or slabs or the grooved monolithic modular plates by the handling device provided with a plurality of suction cups, wherein the suction cups are distributed in such manner that their centers correspond to the fixed centers of the modules of the pattern adopted for the construction of the interchangeable grids of the molds which serve for the manufacture of the said plates.
Process for the production and laying of paving slabs comrising:
In a process for molding paving blocks or slabs of concrete in molding apparatus having a mold with plural mold cavities and plural ram members associated with said cavities, the improvement comprising:
Process for the molding of paving slabs comprising:
Apparatus for the molding of paving stones or slabs from moldable material, comprising:
Dependencies are inferred from the claim text.