Patent · US Expired

Method and apparatus for the manufacture of roof covering plates having a transverse flange

US5080840A · kind A · utility

6Cited by
11References
18Claims
0Family size

Assignee

Inventors

Key dates

Filing dateMay 23, 1990
Grant dateJan 14, 1992
Priority date
Expiry dateMay 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.