Patents by Inventor Olli RAKI

Olli RAKI 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).

  • Sealing arrangement of a drawing furnace
    Patent number: 10611670
    Abstract: A sealing arrangement for a drawing furnace including a vertical center hole with surrounding heating elements for receiving a glass preform including a tapered portion connected to an extension rod. A sealing with an opening is arranged on top of the furnace. The arrangement includes an outer annular bushing arranged on top of the furnace and an inner annular bushing with a first and an opposing second vertical end. The inner bushing is positionable to surround at least part of the tapered portion with the first end positioned to the region of the beginning of the tapered portion and the second end includes protrusions on the outer surface. As the inner bushing is inserted in the outer bushing it is arranged to be movable within the outer bushing and the protrusions form supports for holding the second end of the inner bushing above the center hole.
    Type: Grant
    Filed: September 12, 2017
    Date of Patent: April 7, 2020
    Assignee: ROSENDAHL NEXTROM GMBH
    Inventors: Olli Raki, Joonas Ilmarinen, Urmas Jöksi, Risto Widerholm, Esa Huttunen
  • SEALING ARRANGEMENT OF A DRAWING FURNACE
    Publication number: 20180072609
    Abstract: A sealing arrangement for a drawing furnace including a vertical center hole with surrounding heating elements for receiving a glass preform including a tapered portion connected to an extension rod. A sealing with an opening is arranged on top of the furnace. The arrangement includes an outer annular bushing arranged on top of the furnace and an inner annular bushing with a first and an opposing second vertical end. The inner bushing is positionable to surround at least part of the tapered portion with the first end positioned to the region of the beginning of the tapered portion and the second end includes protrusions on the outer surface. As the inner bushing is inserted in the outer bushing it is arranged to be movable within the outer bushing and the protrusions form supports for holding the second end of the inner bushing above the center hole.
    Type: Application
    Filed: September 12, 2017
    Publication date: March 15, 2018
    Applicant: ROSENDAHL NEXTROM GMBH
    Inventors: Olli RAKI, Joonas ILMARINEN, Urmas JÖKSI, Risto WIDERHOLM, Esa HUTTUNEN