Patents by Inventor Ralf Liebmann

Ralf Liebmann 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).

  • Patent number: 8038435
    Abstract: A venting device for venting a cavity of an injection mold via a venting opening of the injection mold which cavity can be filled with an injection molding material is provided. The venting device comprising a housing which has a through-opening and is designed and intended for an arrangement on an injection mold in such a way that air which is present in the cavity and which escapes from a venting opening of the injection mold when injection molding material is introduced into the cavity can exhaust through the through-opening of the housing into an exterior space surrounding the injection mold. A valve pin extending longitudinally along a direction of extent and being mounted in the housing movably along its direction of extent. The valve pin is designed for being moved from a venting position, in the direction of the cavity into a first cleaning position.
    Type: Grant
    Filed: January 22, 2010
    Date of Patent: October 18, 2011
    Assignee: Takata-Petri AG
    Inventor: Ralf Liebmann
  • Publication number: 20100127417
    Abstract: A venting device for venting a cavity of an injection mold via a venting opening of the injection mold which cavity can be filled with an injection molding material is provided. The venting device comprising a housing which has a through-opening and is designed and intended for an arrangement on an injection mold in such a way that air which is present in the cavity and which escapes from a venting opening of the injection mold when injection molding material is introduced into the cavity can exhaust through the through-opening of the housing into an exterior space surrounding the injection mold. A valve pin extending longitudinally along a direction of extent and being mounted in the housing movably along its direction of extent. The valve pin is designed for being moved from a venting position, in the direction of the cavity into a first cleaning position.
    Type: Application
    Filed: January 22, 2010
    Publication date: May 27, 2010
    Inventor: Ralf Liebmann