Investment casting mold forming apparatus

Details Investment casting mold forming apparatus Investment casting mold forming apparatus

1978-12-21

1981-05-05

Baldwin, Robert D.

Metal founding

Means to shape a forming surface

Shell type mold making machine

118304, 118309, 118312, 118DIG5, 164 26, B22C 1308

Patent

active

042652960

ABSTRACT:
Investment casting mold forming apparatus including a vertically extending housing (10) having a top (22), a bottom (28) and an access opening (20) intermediate the top and the bottom, a diffuser (26) within the housing below the opening and above the bottom, a pressure fluid inlet (32) in the housing between the bottom and the diffuser for providing fluid so that a fluidized bed and particulate material may be generated above the diffuser, and a distributor (50,52,60) introducing particulate material into the housing at its top and above a fluidized bed therein such that the particulate material so introduced may descend, by gravity, within the housing towards the fluidized bed.

REFERENCES:
patent: 2932864 (1960-04-01), Mellen, Jr. et al.
patent: 3530826 (1970-09-01), Trench
patent: 3713475 (1973-01-01), Roelofs et al.
patent: 3788380 (1974-01-01), Jasson et al.
patent: 4146466 (1979-03-01), Chapman

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