Patents Assigned to Kollegger GmbH
  • Tilt-lift method for erecting a bridge
    Patent number: 7996944
    Abstract: One bridge pier, two bridge girders and two supporting rods are manufactured in an approximately vertical position. The supporting rods are connected to the top of the pier and to the bridge girders. The bridge girders are brought into the horizontal final position by raising the end points of the bridge girders, which end points are located beside the pier. Finally, the end points (9) of the bridge girders are connected to the pier.
    Type: Grant
    Filed: May 21, 2007
    Date of Patent: August 16, 2011
    Assignees: Kollegger GmbH, Austria Wirtschaftsservice GmbH
    Inventor: Johann Kollegger