Patents by Inventor Elihu C. Cummings

Elihu C. Cummings 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: 4994974
    Abstract: An improved navigation system for a vehicle. The system includes a microprocessor and memory therefor and permits the pilot of an aircraft or other vehicle to display on a screen a navigation chart showing the position of the vehicle with respect to fixed environmental checkpoints. A compact laser disk comprises the memory. Environmental checkpoints and other navigation data displayed on the screen are stored on the compact disk. The system includes a procedure for inexpensively and quickly updating system memory. The system supersedes navigation chart manuals now utilized by pilots.
    Type: Grant
    Filed: November 14, 1988
    Date of Patent: February 19, 1991
    Inventor: Elihu C. Cummings
  • Patent number: 4796190
    Abstract: An improved navigation system for a vehicle. The system includes a microprocessor and memory therefor and permits the pilot of an aircraft or other vehicle to display on a screen a navigation chart showing the position of the vehicle with respect to fixed environmental checkpoints. A compact laser disk comprises the memory. Environmental checkpoints and other navigation data displayed on the screen are stored on the compact disk. The system includes a procedure for inexpensively and quickly updating system memory. The system supersedes navigation chart manuals now utilized by pilots.
    Type: Grant
    Filed: June 4, 1986
    Date of Patent: January 3, 1989
    Inventor: Elihu C. Cummings