Back to results
US 5,393,142 AGranted
Impeller for stirring sterile liquids
AssigneeMavag Verfahrenstechnik AG
InventorHans P. Meier
Life of this patent
Estimating the term…
Abstract
An impeller for stirring sterile liquids has a plurality of stirring plates, an impeller head supporting the stirring plates and having an outer surface, a central hollow chamber with an opening, a conduit connecting the central hollow chamber with the outer surface, and a driving pin received in the opening. The impeller head has a lower region provided with a plurality of grooves which during rotation of the impeller head provide an effect of pumping the liquids.
Claims13
An impeller for stirring sterile liquids, comprising a plurality of stirring plates;
- an impeller head supporting said stirring plates and having a substantially vertical rotary axis, an outer surface, a central hollow chamber with an opening, and a conduit connecting said central hollow chamber with said outer surface;
- means for driving said impeller head about said rotary axis and including a pin received in said opening, said impeller head having a lower region provided with a plurality of grooves which during rotation of said impeller head provide an effect of pumping a liquid.
Dependencies are inferred from the claim text.