Automatic self-lubricating rotary tablet press
AssigneeThe Dow Chemical Company
InventorDhiren N. Shah
Life of this patent
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Abstract
A self-lubricating tablet press having a force detector for measuring the force required to eject the tablet from the die cavity connected to and activating a lubricator for lubricating the dies and punch faces when the ejection force reaches a predetermined value.
Claims4
In a rotary tablet press having a revolving head with multiple upper punches, lower punches, and dies that ride on a cam path having stations for filling the dies with tabletting material, adjusting the amount of die fill, compressing the tabletting material to form a tablet, and ejecting the tablet, wherein the improvement comprises a force detector for measuring the force required to eject the tablet from a given die cavity, said force detector being connected to a lubricator for applying controlled amounts of lubricant to said die cavity and punch faces, said lubricator being activated as the force required to eject the tablet from the die cavity reaches a predetermined value as measured by the force detector.
Dependencies are inferred from the claim text.