Static molds – Container-type molding device – And an inner removable core to form recess or opening
Patent
1982-02-10
1984-09-18
Czaia, Donald
Static molds
Container-type molding device
And an inner removable core to form recess or opening
B22C 924
Patent
active
044719361
ABSTRACT:
In the casting of a concrete element, such as a column support block, in which there is used a mould core designed to produce one or more recesses or grooves in the element, the mould core is provided with one or more apertures or slots, in each of which there is arranged a recess-forming mould part which can be moved in said aperture or slot by means of a ram. Prior to a casting operation, the moveable mould part is moved to an outwardly projecting active position and, subsequent to the cast element hardening, is withdrawn by means of the ram, thereby to enable the cast element and the mould core to be separated from one another. All of the moveable core parts on one side surface of the mould core can be arranged on a plate extending parallel to the corresponding side surface of the mould core and arranged to be acted upon by the ram.
The invention also relates to a mould core provided with apertures or slots for moveable mould parts, the mould parts being arranged for movement by means of a ram between an active, casting position and an inactive position in which the cast element can be removed from the mould core.
REFERENCES:
patent: 929694 (1909-08-01), Noah
patent: 2680276 (1954-06-01), Filangeri
patent: 3814374 (1974-06-01), Beemer
patent: 3952990 (1976-04-01), Garcia
patent: 4125246 (1978-11-01), von Holdt
patent: 4209161 (1980-06-01), Horvath
A-Betong AB/Sabema Material AB
Becker Mary A.
Czaia Donald
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