Patents by Inventor Antti Ruohonen

Antti Ruohonen 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 and apparatus to control a ship
    Patent number: 7442100
    Abstract: The invention relates to a method and an apparatus to control a propulsion drive. The propulsion drive comprises at least one first propeller drive, which rotates the first propeller and by which the propulsion power and/or rotating speed of the first propeller, and a second propeller drive, by which the second propeller is rotated and controlled. According to the invention the propulsion drive is controlled by a single control command, whereby it is generated from the control command a first control signal, by which the first propeller drive is controlled, and a second signal, by which the second propeller drive is controlled.
    Type: Grant
    Filed: April 13, 2004
    Date of Patent: October 28, 2008
    Assignee: ABB Oy
    Inventors: Vesa Korhonen, Risto Pakaste, Antti Ruohonen, Petri Sullström, Panu Virolainen, Petteri Ämmälä, Matti Lehti
  • Method and apparatus to control a ship
    Publication number: 20060246793
    Abstract: The invention relates to a method and an apparatus to control a propulsion drive. The propulsion drive comprises at least one first propeller drive, which rotates the first propeller and by which the propulsion power and/or rotating speed of the first propeller, and a second propeller drive, by which the second propeller is rotated and controlled. According to the invention the propulsion drive is controlled by a single control command, whereby it is generated from the control command a first control signal, by which the first propeller drive is controlled, and a second signal, by which the second propeller drive is controlled.
    Type: Application
    Filed: April 13, 2004
    Publication date: November 2, 2006
    Applicant: ABB OY
    Inventors: Vesa Korhonen, Risto Pakaste, Antti Ruohonen, Petri Sullstrom, Panu Virolainen, Petteri Ammala, Matti Lehti