Patents by Inventor John D. Hall

John D. Hall 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).

  • Simulator control loading inertia compensator
    Patent number: 4236325
    Abstract: Signals are developed representative of the mechanical inertia of a vehicle simulator linkage elements that drive control members utilized by a student operator. These signals are combined with signals representative of programmed vehicle operating data and signals representative of the student operator's mechanical input such that the mechanical inertia of the simulator linkage elements does not influence the signal which causes the actual operator control member to have an appropriate force/"feel".
    Type: Grant
    Filed: December 26, 1978
    Date of Patent: December 2, 1980
    Assignee: The Singer Company
    Inventors: John D. Hall, Alfred S. Williams, Jr.