Vacuum cast molding apparatus

Details Vacuum cast molding apparatus Vacuum cast molding apparatus

1993-02-25

1994-01-04

Nguyen, Khanh

Plastic article or earthenware shaping or treating: apparatus

Including ventilating type hood or chamber encasing a...

425135, 425173, 425200, 425203, 425420, 425546, 425812, 425DIG60, B29C 3942, B29C 3944

Patent

active

052755452

ABSTRACT:
A vacuum cast molding apparatus includes a plurality of vacuum chambers which can be brought into communication with each other, a plurality of depressurizing devices to evacuate each of the vacuum chambers respectively, a plurality of mixing and injecting devices installed in each of the vacuum chambers, to mix, agitate and inject molding materials into dies installed in each of the vacuum chambers, and separators installed removably between the vacuum chambers for partitioning each of the vacuum chambers. The vacuum chambers can be used independently when the separators are installed to partition them from each other. The vacuum chambers can also be used as one large vacuum chamber when the separators are removed bringing the chambers into communication with each other.

REFERENCES:
patent: 3267517 (1966-08-01), Altermatt
patent: 4256444 (1981-03-01), Suter
patent: 4521172 (1985-06-01), Gilbert
patent: 4997355 (1991-03-01), Yamauchi et al.

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