Vacuum nozzle assembly

Details Vacuum nozzle assembly Vacuum nozzle assembly

1998-09-04

2000-01-11

Dudash, Diana

Coating processes

Medical or dental purpose product; parts; subcombinations;...

Particulate or unit-dosage-article base

427289, 427296, 4274301, B05D 118, B05D 132

Patent

active

060133066

ABSTRACT:
A nozzle assembly is provided with a valve to enable the coating of low aspect ratio items such as tablets. In a preferred embodiment a valve is disclosed such that the vacuum forces acting on the surfaces of the valve are equal to the weight of the valve. This balancing of the weight of the valve and the vacuum forces allows gravity to be the primary motive force for actuation. The weight of the valve is used to detect a tablet, such that when a tablet is missing, the valve prevents any coating from being pulled into the nozzle.

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