Patents Assigned to Mavag Verfahrenstechnik AG
  • Magnetic stirring apparatus with contactless coupling between stirring shaft and stirring tool
    Patent number: 5533803
    Abstract: A stirring apparatus has a stirring shaft, a drive, a stirring tool, and a contactlessly operating coupling for transmitting a driving moment from the drive through the stirring apparatus shaft to the stirring tool. The contactlessly operating coupling is arranged between the stirring shaft and the stirring tool, and a pipe is provided inside which the stirring shaft is arranged.
    Type: Grant
    Filed: November 7, 1994
    Date of Patent: July 9, 1996
    Assignee: MAVAG Verfahrenstechnik AG
    Inventor: Hans P. Meier
  • Double impeller for stirring sterile liquids
    Patent number: 5407272
    Abstract: An impeller for stirring has an impeller head having a central hollow chamber with an opening, a stirring tool provided on the impeller head, and a driving pin received in the opening. The stirring tool is formed as a propeller having a rotary direction which produces an upwardly directed flow and provided in a lower region with flow producing surfaces which form an additional flow directed opposite to the flow produced by the propeller.
    Type: Grant
    Filed: September 30, 1993
    Date of Patent: April 18, 1995
    Assignee: Mavag Verfahrenstechnik AG.
    Inventor: Hans P. Meier
  • Impeller for stirring sterile liquids
    Patent number: 5393142
    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.
    Type: Grant
    Filed: September 30, 1993
    Date of Patent: February 28, 1995
    Assignee: Mavag Verfahrenstechnik AG
    Inventor: Hans P. Meier