Patents by Inventor Franziska Zhu

Franziska Zhu 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).

  • Screen-type screw centrifuge
    Patent number: 11654444
    Abstract: A screen-type screw centrifuge including a screw drive shaft, a screw hub, a hollow screw main body and a ring-shaped annular-gap cover. At least one axial access channel is formed radially between a screw main body circumferential wall and the annular-gap cover. Using a tool engagement portion of a tightening means, by which the screw main body is fixed to the screw hub with a first screw main body axial end portion thereof, is axially accessible from a second screw main body axial end portion.
    Type: Grant
    Filed: July 29, 2022
    Date of Patent: May 23, 2023
    Assignee: Andritz Separation GmbH
    Inventors: Dieter Scherer, Franziska Zhu
  • Screen-type Screw Centrifuge
    Publication number: 20230034543
    Abstract: A screen-type screw centrifuge including a screw drive shaft, a screw hub, a hollow screw main body and a ring-shaped annular-gap cover. At least one axial access channel is formed radially between a screw main body circumferential wall and the annular-gap cover. Using a tool engagement portion of a tightening means, by which the screw main body is fixed to the screw hub with a first screw main body axial end portion thereof, is axially accessible from a second screw main body axial end portion.
    Type: Application
    Filed: July 29, 2022
    Publication date: February 2, 2023
    Inventors: Dieter Scherer, Franziska Zhu