Method and apparatus for manufacturing roof tiles and tiles made thereby
US4695418A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 12, 1985 |
| Grant date | Sep 22, 1987 |
| Priority date | — |
| Expiry date | Sep 12, 2005 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB28B11/16
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
In the manufacture of roof tiles comprising extruding a continuous shaped ribbon of tile forming material onto a succession of pallets, and cutting the ribbon where pallets adjoin to form individual green state tiles on pallets, there is performed the step of causing a cutting tool to engage with the upper surface of the ribbon only for part of the length of each pallet whereby a recess is formed in the upper surface of each tile. In a particular embodiment the recess is a channel cut in the tile at a location immediately downstream of the extruding step. The recess is also subsequently smoothed by applying a smoothing roll thereto.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.