Plastic and nonmetallic article shaping or treating: processes – Mechanical shaping or molding to form or reform shaped article – To produce composite – plural part or multilayered article
Patent
1976-05-11
1978-09-26
Pavelko, Thomas P.
Plastic and nonmetallic article shaping or treating: processes
Mechanical shaping or molding to form or reform shaped article
To produce composite, plural part or multilayered article
52247, 52294, 249 99, 264274, B28B 116
Patent
active
041170717
ABSTRACT:
The method of forming hollow concrete articles such as tanks which are cast in a mould around reinforcing metal, the mould being shaped to form a bottom and including an upstanding integral ridge which forms a mould for the inner lower portions of a wall subsequently formed on such bottom after the bottom is cast, characterized by an interlocking ridge at the join and by the absence of reinforcing metal at such join.
REFERENCES:
patent: 1439646 (1922-12-01), Smith
patent: 3120047 (1964-02-01), Crom
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