Patents by Inventor Olof Hilger

Olof Hilger 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).

  • Riser sleeve, method for producing a riser body for the riser sleeve as well as an expander element and core box for producing a riser body
    Patent number: 11358212
    Abstract: A riser sleeve (1) for using when pouring metals into a casting mould includes a riser body (2). The riser body (2) includes a riser cavity (3) for holding liquid metal and a riser opening (4) for joining the riser cavity (3) to a mould cavity of the casting mould during the casting process. The riser cavity (3) has a greater diameter than the diameter of the riser opening (4) in at least one portion, the riser body (2) is made of an insulating and/or exothermic riser material. The riser body (2) is formed as a single piece, the riser opening (4) defines an axis (5), and the riser cavity (3) is asymmetric to the axis (5).
    Type: Grant
    Filed: February 12, 2020
    Date of Patent: June 14, 2022
    Assignee: GTP Schäfer Gießtechnische Produkte GmbH
    Inventors: Olof Hilger, Jörg Schäfer, Thomas Schäfer
  • RISER SLEEVE, METHOD FOR PRODUCING A RISER BODY FOR THE RISER SLEEVE AS WELL AS AN EXPANDER ELEMENT AND CORE BOX FOR PRODUCING A RISER BODY
    Publication number: 20200254510
    Abstract: The present invention relates to a riser sleeve (1) for using when pouring metals into a casting mould, comprising a riser body (2), comprising a riser cavity (3) for holding liquid metal and a riser opening (4) for joining the riser cavity (3) to a mould cavity of the casting mould during the casting process, wherein the riser cavity (3) has a greater diameter than the diameter of the riser opening (4) in at least one portion, the riser body (2) is made of an insulating and/or exothermic riser material, the riser body (2) is formed as a single piece, the riser opening (4) defines an axis (5), and the riser cavity (3) is asymmetric to the axis (5).
    Type: Application
    Filed: February 12, 2020
    Publication date: August 13, 2020
    Inventors: Olof Hilger, Jörg Schäfer, Thomas Schäfer