Patents by Inventor Bror Folke Hedstrom

Bror Folke Hedstrom 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 device for producing substantially kinematic steering of a vessel
    Patent number: 4069784
    Abstract: The invention provides a method and device for producing substantially kinematic steering of a vessel in a yaw path having a given radius of curvature conforming with a predetermined control law. During the steady state phase of the yaw when there exist conditions for dealing with an easily controllable radius of curvature and in the vessel is steered by rudder deflection changes and by utilizing servo control methods in such a way that the radius of curvature of the vessel, which has been determined by instrument facilities aboard the vessel, follows a predetermined suitable program for the yaw curvature during the yaw.
    Type: Grant
    Filed: December 11, 1975
    Date of Patent: January 24, 1978
    Assignee: Kockums Automation AB
    Inventors: Bror Folke Hedstrom, Per Thorvald Persson