Now showing items 1-1 of 1

    • Optical joystick 

      Fincher, Jeffrey L. (United States. Patent and Trademark OfficeTexas A&M University. Libraries, 1985-08-06)
      Disclosed is a joystick apparatus for effecting a plurality of variable voltage changes using one or more partial spheres concentrically mounted on the joystick shaft having longitudinally or latitudinally variable, ...