Patents by Inventor Ludger JANSSEN

Ludger JANSSEN 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).

  • Tower crane for erecting a wind turbine, and method for erecting said tower crane
    Patent number: 10781081
    Abstract: A rotating tower crane for erecting a wind turbine, having a tower and a tower substructure, which is connected to the tower and is intended for supporting the tower, wherein the tower substructure has a supporting cross frame, which has three or more, preferably four, legs, extending from the tower. It is proposed that each leg has fastened on it, on the ground side, a load-distributor plate, which is not connected to the foundation, wherein the load-distributor plates together form the ballast of the tower.
    Type: Grant
    Filed: September 29, 2015
    Date of Patent: September 22, 2020
    Assignee: Wobben Properties GmbH
    Inventors: Roy Kersten, Frank Knoop, Ludger Janssen, Tim Janssen, Rolf Coners
  • TOWER CRANE FOR ERECTING A WIND TURBINE, AND METHOD FOR ERECTING SAID TOWER CRANE
    Publication number: 20170334685
    Abstract: A rotating tower crane for erecting a wind turbine, having a tower and a tower substructure, which is connected to the tower and is intended for supporting the tower, wherein the tower substructure has a supporting cross frame, which has three or more, preferably four, legs, extending from the tower. It is proposed that each leg has fastened on it, on the ground side, a load-distributor plate, which is not connected to the foundation, wherein the load-distributor plates together form the ballast of the tower.
    Type: Application
    Filed: May 29, 2015
    Publication date: November 23, 2017
    Inventors: Roy KERSTEN, Frank KNOOP, Ludger JANSSEN, Tim JANSSEN, Rolf CONERS