Dispensing – Automatic control – Delivery from source controlled by quantity in discharging...
Patent
1984-12-11
1986-12-23
Skaggs, H. Grant
Dispensing
Automatic control
Delivery from source controlled by quantity in discharging...
222161, 222196, 222164, 177 64, B67D 514, B67D 564
Patent
active
046307559
ABSTRACT:
An apparatus for precisely dispensing free flowing particulate solids with a controllable variable flow rate is disclosed. The invention includes a container for holding a free flowing solid to be dispensed which is pivotable through an angular range of inclination, a transporting mechanism connected to the container, which includes two segments intersecting to define an angle, for transporting particles from the container to a discharge end. The angle causes the particles disposed within the conduit to form a bridge for stopping the flow of particles when the container is inclined at an angle less than the angle at which gravity causes free flow of the powder through the conduit. A vibrator selectively applies vibrations to the particles with an energy level sufficient to cause the bridge to break apart to cause the particles to be free flowing from the container through the transporting mechanism in response to the application of the vibrations. A mechanism for varying the angle of inclination of the container is preferrably used to adjust the rate of flow of the particles through the transporting mechanism as a function of angle during the application of vibrations to the particles.
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patent: 4320855 (1982-04-01), Ricciardi et al.
patent: 4382527 (1983-05-01), Lerner
patent: 4583660 (1986-04-01), LaBarre et al.
Alexander Jay I.
Skaggs H. Grant
Spiral Systems Inc.
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