Patents by Inventor Hans-Gerd Freisem

Hans-Gerd Freisem 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).

  • Method for automatically controlling the speed of a ship
    Patent number: 8265810
    Abstract: A method for automatically controlling the speed of a ship, in which the engine speed (nMOT) is automatically controlled by a closed-loop engine speed control system as an inner closed-loop control system, the ship's speed (vS) is automatically controlled by a closed-loop ship's speed control system as an outer closed-loop control system, and the ship's set speed (vSL) is influenced as a reference input of the closed-loop ship's speed control system as a function of an external signal source. The ship's set speed (vSL) is corrected as a function of the underwater topography (TOPO).
    Type: Grant
    Filed: July 9, 2009
    Date of Patent: September 11, 2012
    Assignee: MTU Friedrichshafen GmbH
    Inventors: Marc Hehle, Hans-Gerd Freisem, Olaf Kammertoens
  • METHOD FOR AUTOMATICALLY CONTROLLING THE SPEED OF A SHIP
    Publication number: 20100076632
    Abstract: A method for automatically controlling the speed of a ship, in which the engine speed (nMOT) is automatically controlled by a closed-loop engine speed control system as an inner closed-loop control system, the ship's speed (vS) is automatically controlled by a closed-loop ship's speed control system as an outer closed-loop control system, and the ship's set speed (vSL) is influenced as a reference input of the closed-loop ship's speed control system as a function of an external signal source. The ship's set speed (vSL) is corrected as a function of the underwater topography (TOPO).
    Type: Application
    Filed: July 9, 2009
    Publication date: March 25, 2010
    Applicant: MTU FRIEDRICHSHAFEN GMBH
    Inventors: Marc Hehle, Hans-Gerd Freisem, Olaf Kammertoens