Patents by Inventor Johannes Knafl

Johannes Knafl 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).

  • Screw press
    Patent number: 10005252
    Abstract: The invention relates to a screw press (1) comprising a shaft (4) and a spiral helix (5) provided thereon, wherein the helix (5) goes over in the inlet region (2) of the screw press (1) into a freely projecting helix (8). It is principally characterized in that a tube (9) is provided in the inlet region (2) of the screw press (1). As a result, on the one hand the screen area can be increased greatly in size, on the other hand the co-rotation of the suspension with the shaft can be reduced or avoided.
    Type: Grant
    Filed: September 10, 2012
    Date of Patent: June 26, 2018
    Assignee: Andritz AG
    Inventors: Roland Kanzler, Rudolf Stadlauer, Johannes Knafl, Wolfgang Magor
  • SCREW PRESS
    Publication number: 20150224730
    Abstract: The invention relates to a screw press (1) comprising a shaft (4) and a spiral helix (5) provided thereon, wherein the helix (5) goes over in the inlet region (2) of the screw press (1) into a freely projecting helix (8). It is principally characterized in that a tube (9) is provided in the inlet region (2) of the screw press (1). As a result, on the one hand the screen area can be increased greatly in size, on the other hand the co-rotation of the suspension with the shaft can be reduced or avoided.
    Type: Application
    Filed: September 10, 2012
    Publication date: August 13, 2015
    Applicant: Andritz AG
    Inventors: Roland Kanzler, Rudolf Stadlauer, Johannes Knafl, Wolfgang Magor