Method and apparatus for casting tubular bodies

Details Method and apparatus for casting tubular bodies Method and apparatus for casting tubular bodies

1981-04-02

1982-12-28

Parrish, John A.

Static molds

In situ construction engineering type or building type-mold...

Forming hydraulic and earth control type product in situ

249178, 249180, 249184, E21D 1000

Patent

active

043657818

ABSTRACT:
A collapsible inner form for making tubular concrete products has upper and lower sections with rigid casting faces, and flexible side sections which buckle inwardly when the internal form is collapsed. Jacks are used to push wheels in the upper and lower sections outwardly against the cast product, forcing the sections to their collapsed positions. The inner form is movable on the wheels for removal of the inner form from the solidified cast product.

REFERENCES:
patent: 1047102 (1912-12-01), Meinken
patent: 1118558 (1914-11-01), La Mare
patent: 1983117 (1934-12-01), Bishop
patent: 2306503 (1942-12-01), Sarosdy
patent: 2315634 (1943-04-01), McCall
patent: 3074140 (1963-01-01), Balcomb
patent: 3749352 (1973-07-01), Khodosh
patent: 4153232 (1979-05-01), Burchett

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