Patents by Inventor Hans P. Meier

Hans P. Meier has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • 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