Machine and method for producing extruded concrete product
US8944803B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | May 18, 2011 |
| Grant date | Feb 3, 2015 |
| Priority date | — |
| Expiry date | Mar 1, 2033 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29C2948/92876
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A machine and method of extruding concrete building product, e.g., brick, tile, paver, or shingles, and concrete mixture therefor. The mixture has aggregate, liquid and binder that includes fly ash and can include slag with moisture content controlled producing a zero or negative slump loose feed mixture compacted in a consolidation chamber of the machine into increased density consolidated mixture extruded from an extrusion chamber in communication with the consolidation chamber with compaction force being generally transverse to extrusion force. Compaction force is maintained during extrusion through a die of non-tapering construction. Where the extruded product is a brick, the extruded slug is cut into a plurality of bricks using a rotary cutter having an offset forming an increased moisture absorbing region in the cut surface of each brick formed from the slug that better bonds with mortar during bricklaying.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.