Method and apparatus for delivering particulate material

Details Method and apparatus for delivering particulate material Method and apparatus for delivering particulate material

1989-08-11

1991-09-24

Huppert, Michael S.

Dispensing

Processes of dispensing

222 64, 222491, 222556, 177114, B67D 500

Patent

active

050507702

ABSTRACT:
A method and apparatus are disclosed for delivering particulate material while minimizing the release of dust. The apparatus comprises a vertical conduit, and movable flap adapted to close the lower end of the conduit and a counterwieght or linear actuator for moving the flap to close the conduit whenever the quantity of material within the conduit drops to be predetermined level. The device operates so that a column of solid particulate material is maintained in the lower end of the tube at all times to prevent escape of dust.

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patent: 4927312 (1990-05-01), Meredith et al.
patent: 4944428 (1990-07-01), Gmur et al.

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