Method for producing replicated paving stone
US5372676A · kind A · utility
Inventor
Key dates
| Filing date | Apr 22, 1994 |
| Grant date | Dec 13, 1994 |
| Priority date | — |
| Expiry date | Apr 22, 2014 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC04B2111/542
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A method of producing replicated paving stone including a base having a shaded and stratified layered upper surface with a plurality of simulated grout lines formed therein including the steps of preparing a cementitious mortar, applying a release agent to the interior of a forming mold, pouring the cementitious mortar into the forming mold, leveling the mortar, vibrating the forming mold and cementitious mortar therein, allowing the cementitious mortar to cure forming a base with an upper surface, releasing the base from the forming mold, applying an acid stain to the base, allowing the acid stain to etch the base to shade the upper surface, accenting the plurality of simulated grout lines with a pigment and sealing the replicated paving stone with an acrylic polymer sealer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.