Ram casting machine for concrete slabs

Details Ram casting machine for concrete slabs Ram casting machine for concrete slabs

1985-09-09

1987-06-23

Hoag, Willard E.

Plastic article or earthenware shaping or treating: apparatus

Stock pressurizing means operably associated with downstream...

Centripetal elastic melt extruder type

366332, 425447, 425456, 425457, B28B 2152, B28B 322

Patent

active

046749705

ABSTRACT:
A ram casting machine for the fabrication of concrete slabs which is movable on a casting bed. The machine incorporates a feed hopper and a concrete flow channel with ram numbers cyclically reciprocated therein in opposite directions for generating internal pressure in the cast concrete. Each ram member including at least one wedge-shaped surface assembly having first and second inclined annular surfaces, with the entrance to the concrete flow channel and having a steeper inclination than the second inclined annular surface.

REFERENCES:
patent: 2748442 (1956-06-01), Butcher
patent: 3176494 (1965-04-01), Cullen et al.
patent: 3205534 (1965-09-01), Langecker
patent: 3209404 (1965-10-01), Hagen
patent: 3877860 (1975-04-01), Putti
patent: 3909183 (1975-09-01), Hsu
patent: 3932102 (1976-01-01), Rosenbaum
patent: 4444702 (1984-04-01), Thomas et al.
patent: 4547142 (1985-10-01), Arenhovel et al.

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