Method and apparatus for the manufacture of roof covering plates having a transverse flange
US5080840A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 23, 1990 |
| Grant date | Jan 14, 1992 |
| Priority date | — |
| Expiry date | May 23, 2010 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB28B7/0088
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
An apparatus and a proces for the manufacture, by the extrusion method, of roof covering plates having at their underside a transverse flange shaped thereto. At a filling station cavities in the pallets corresponding to the transverse flange, are first filled with a hardenable plastic material such as fresh concrete, and said material is then compacted at at least one compacting station. Thereafter, a continuous layer of the material is deposited at a depositing station. The material is finally processed to roof covering plates.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.