Patents by Inventor Douglas J. Elder

Douglas J. Elder 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).

  • Patent number: 7526988
    Abstract: An electromagnetic railgun projectile is disclosed which includes an aeroshell having a substantially flat surface extending along the length thereof. The substantially flat surface is configured to increase the lift-to-drag ratio of the projectile during reentry. The projectile also includes an armature integrated into the aeroshell substantially near the center-of-gravity of the projectile, and a plurality of extendable flaps attached to the aeroshell. The flaps are capable of stabilizing the projectile during an unguided portion of its flight and maneuvering the projectile during a guided portion of its flight.
    Type: Grant
    Filed: May 11, 2006
    Date of Patent: May 5, 2009
    Assignee: The Boeing Company
    Inventor: Douglas J. Elder