Patents by Inventor Lawrence E. Marshall

Lawrence E. Marshall 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: 4012014
    Abstract: An aircraft fly-by-wire flight controller requiring essentially only hand motion or rotation about a fixed center point residing in the centerline of the palm grip of the pilot's hand to thereby avoid problems with arm movement, and wherein the flight controller consists of a formed grip to fit the grasp of the fingers and palm of the hand, permit finger and/or thumb access to all switches carried by the grip, and reduce fatigue by concentrating the fore and aft pitch control movement and the lateral roll control movement in the normal palm grip center point.
    Type: Grant
    Filed: September 11, 1975
    Date of Patent: March 15, 1977
    Assignee: McDonnell Douglas Corporation
    Inventor: Lawrence E. Marshall