Method and apparatus for the manufacture of roof covering plates

Details Method and apparatus for the manufacture of roof covering plates Method and apparatus for the manufacture of roof covering plates

1990-05-23

1992-01-14

Hoag, Willard

Plastic and nonmetallic article shaping or treating: processes

With measuring, testing, or inspecting

264 407, 264145, 264256, 425134, 425135, 425253, 425308, 425431, 425436R, B29C 3904, B29C 3930

Patent

active

050808400

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.

REFERENCES:
patent: 430366 (1890-06-01), Babcock
patent: 730131 (1903-06-01), Klay
patent: 1792844 (1931-02-01), Knecht
patent: 2965949 (1960-12-01), Lang
patent: 3193903 (1965-07-01), White
patent: 3220150 (1965-11-01), Besse
patent: 3303245 (1967-02-01), Trudeau
patent: 3583117 (1971-06-01), Roach
patent: 4131670 (1978-12-01), Abate
patent: 4145860 (1979-03-01), Wotherspoon
patent: 4789313 (1988-12-01), Garcia

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