Patents by Inventor David Eugene Sherrill

David Eugene Sherrill 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).

  • Door edge gap and radar signature mitigation door seal
    Patent number: 6170781
    Abstract: An aircraft door sealing system for use with an aircraft door. The aircraft door is movable between open and closed positions with respect to a door frame. The door has a peripheral door opening portion and a peripheral door seal portion. The door frame has a peripheral frame opening portion and a peripheral frame seal portion. The frame opening portion is aligned adjacent the door opening portion when the door is in the closed position. The frame seal portion is aligned adjacent the door seal portion when the door is in the closed position. The sealing system is provided with an elastic seal which is interposed between the door and the door frame. The seal is attached to the door seal portion and the frame seal portion. The seal is expandable and contractible for permitting movement of the door between the open and closed positions thereof. The seal has a pair of seal opening edges disposed between the door opening portion and the frame opening portion.
    Type: Grant
    Filed: January 21, 1999
    Date of Patent: January 9, 2001
    Assignee: Northrop Grumman Corporation
    Inventors: David Eugene Sherrill, Robert Wade Chapman