Dilatant mold and dilatant molding apparatus

Details Dilatant mold and dilatant molding apparatus Dilatant mold and dilatant molding apparatus

1984-03-14

1985-05-21

Hoag, Willard E.

Plastic article or earthenware shaping or treating: apparatus

Means for molding powdered metal

425405R, 425421, 425584, B29C 100, B29C 116, B29D 3102

Patent

active

045183350

ABSTRACT:
An apparatus for molding complex powder articles having a two part dilatant mold resiliently coupled. The two halves of the mold are resiliently pressed into physical contact with each other by external means. A vacuum pump connected to the mold produces a fluidized powder material flow from a powder feed mechanism into the mold cavity. A vibrator vibrates the mold during the filling of the mold cavity with powdered material with a force sufficient to slightly separate the two halves of the mold cyclically dilating the volume of the mold cavity. The dilation of the mold cavity in combination with the fluidized powder feed permits the mold cavity to be uniformly filled with powder material. Dilation of the mold cavity also compacts the powder material received in the mold.

REFERENCES:
patent: 1995947 (1935-03-01), Seil
patent: 2452382 (1948-10-01), Long
patent: 2586148 (1952-02-01), Clark et al.
patent: 3302262 (1967-02-01), Chanlund
patent: 3712785 (1973-01-01), Hirt et al.
patent: 3734658 (1973-05-01), Livera
patent: 3743468 (1973-09-01), Helmrich
patent: 3756762 (1973-09-01), Maugweiler
patent: 3804570 (1974-04-01), Hosehle et al.
patent: 3901642 (1975-08-01), Urmanov et al.

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