Filter assembly for dry powder filling machine

Details Filter assembly for dry powder filling machine Filter assembly for dry powder filling machine

1984-05-01

1987-12-01

Skaggs, H. Grant

Dispensing

Fluid flow discharge

From movable trap chamber

222189, 222368, 425405R, 425437, 425812, A01N 1708

Patent

active

047098376

ABSTRACT:
The present application discloses an improved filter assembly used in a dry powder filling machine in which the bottom of the cylindrical measuring cavity for the powder being measured is formed by the improved filter assembly having a cup shaped recess wherein the floor of the recess contains evenly spaced and relatively small apertures. The aperture-containing floor is backed by a screen which allows vacuum to be applied to draw powder into the cavity but which prevents passage of the powder through the screen while the cavity is being filled. Application of gas pressure to the underside of the floor of the cavity expels the measured powder into a container as a discrete slug with relatively little separation.

REFERENCES:
patent: 2513143 (1950-06-01), Carter
patent: 2540059 (1951-01-01), Stirn et al.
patent: 2670101 (1954-02-01), Heisterkamp et al.
patent: 2728943 (1956-01-01), Hertz et al.
patent: 2890066 (1959-06-01), Kerr
patent: 3312152 (1967-04-01), Williamson
patent: 4371101 (1983-02-01), Cane et al.

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