Apparatus for manufacturing multi-layered concrete roof tiles
US4986744A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 5, 1988 |
| Grant date | Jan 22, 1991 |
| Priority date | — |
| Expiry date | Oct 5, 2008 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB28B11/04
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
An apparatus for manufacturing concrete roof tiles by extrusion includes a coating system adapted to be supplied with green concrete and to apply a continuous layer of green concrete onto a continuous strand of movable, positively advanced bottom molds (14), a compacting roll (25) and a smoothing member (35) immediately downstream thereof in the manufacturing direction for compacting and possibly shaping the basic green concrete layer passing therebeneath on the bottom molds. There is provided downstream--as viewed in the manufacturing direction--of the smoothing member (35) for the basic layer (17) and separated therefrom by a gap (40) extending transversely to the manufacturing direction, at least a further smoothing member (45) for another layer, especially a cover layer (18), to be applied onto the basic layer (17). The material for said other layer is supplied under pressure through the gap (40).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.