Patents by Inventor Shirley Steffey

Shirley Steffey 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).

  • Advanced degaussing coil system
    Patent number: 5483410
    Abstract: The static magnetic field signature of a sea-going vessel is reduced by sly of degaussing current to pairs of loop coils adjacent to the port and starboard sides of the vessel hull. The coils of each pair are positioned at equal angles to a vertical plane extending longitudinally along the keel of the hull. The degaussing currents in the respective coils of each pair are simultaneously varied with respect to amplitude and polarity in accordance with geometrical heading of the vessel and changes in its roll and pitch orientations.
    Type: Grant
    Filed: March 25, 1994
    Date of Patent: January 9, 1996
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: John J. Holmes, Shirley Steffey