Patents by Inventor Stephan Roider

Stephan Roider 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).

  • Extruder screw, extrusion device with extruder screw and method for plasticizing a plastic material
    Patent number: 11376779
    Abstract: An extruder screw for the plasticizing of at least one plastic material or a plastic material mixture, with a melting zone, a wave zone and a mixing zone arranged between the melting zone and the wave zone, wherein a conveying web extending in a helix-like manner along a screw longitudinal axis is formed in the melting zone and in the wave zone, wherein a conveying web of the melting zone terminates at an end of the melting zone facing the mixing zone, and a conveying web of the wave zone begins at an end facing the mixing zone. The application also relates to an extrusion device with this extruder screw, and a method for plasticizing at least one plastic material or a plastic material mixture.
    Type: Grant
    Filed: May 30, 2018
    Date of Patent: July 5, 2022
    Assignee: KRAUSSMAFFEI EXTRUSION GMBH
    Inventors: Otto Skrabala, Stephan Roider
  • Extruder screw, extrusion device having an extruder screw and method for plasticizing a plastic
    Patent number: 11273420
    Abstract: An extruder screw for plasticizing at least one plastic or plastic mixture, including a melting zone, a shaft zone and a mixing zone arranged between the melting zone and the shaft zone, wherein a conveying flight is formed in the melting zone and in the shaft zone, which extends helically along a longitudinal axis of the screw, wherein a conveying flight of the melting zone ends at an end of the melting zone towards the mixing zone and a conveying flight of the shaft zone begins at an end towards the mixing zone. A flight depth of the melting zone continuously decreases along the longitudinal axis of the screw to the mixing zone. Further, an extrusion device having the extruder screw and to a method for plasticizing at least one plastic or plastic mixture.
    Type: Grant
    Filed: November 7, 2019
    Date of Patent: March 15, 2022
    Assignee: KRAUSSMAFFEI EXTRUSION GMBH
    Inventors: Otto Skrabala, Stephan Roider
  • EXTRUDER SCREW, EXTRUSION DEVICE HAVING AN EXTRUDER SCREW AND METHOD FOR PLASTICIZING A PLASTIC
    Publication number: 20210402358
    Abstract: An extruder screw for plasticizing at least one plastic or plastic mixture, including a melting zone, a shaft zone and a mixing zone arranged between the melting zone and the shaft zone, wherein a conveying flight is formed in the melting zone and in the shaft zone, which extends helically along a longitudinal axis of the screw, wherein a conveying flight of the melting zone ends at an end of the melting zone towards the mixing zone and a conveying flight of the shaft zone begins at an end towards the mixing zone. A flight depth of the melting zone continuously decreases along the longitudinal axis of the screw to the mixing zone. Further, an extrusion device having the extruder screw and to a method for plasticizing at least one plastic or plastic mixture.
    Type: Application
    Filed: November 7, 2019
    Publication date: December 30, 2021
    Inventors: Otto Skrabala, Stephan Roider
  • Extruder screw, extrusion device with extruder screw and method for plasticizing a plastic material
    Publication number: 20200198209
    Abstract: An extruder screw for the plasticizing of at least one plastic material or a plastic material mixture, with a melting zone, a wave zone and a mixing zone arranged between the melting zone and the wave zone, wherein a conveying web extending in a helix-like manner along a screw longitudinal axis is formed in the melting zone and in the wave zone, wherein a conveying web of the melting zone terminates at an end of the melting zone facing the mixing zone, and a conveying web of the wave zone begins at an end facing the mixing zone. The application also relates to an extrusion device with this extruder screw, and a method for plasticizing at least one plastic material or a plastic material mixture.
    Type: Application
    Filed: May 30, 2018
    Publication date: June 25, 2020
    Inventors: Otto Skrabala, Stephan Roider