Patents Examined by Michael Horabk
  • Patent number: 5959556
    Abstract: A process and an adjustable circuit using a joystick activated controller constructed in accordance with the principles of the present invention to provide balanced forward and reverse directional regulation of bidirectional motors oppositely deployed to cooperation in the propulsion of an item of equipment. The joystick responds to the hand of a human operator to regulate the operation of a pair of motors driving opposite sides of an item of equipment along a path of travel. By operating the joystick, the operator can adjust the speed and the forward and reverse directions while trimming the motors or actuators to allow the piece of construction equipment to travel a straight path, or alternatively, to enable the operator to toggle the joystick to guide the equipment during its operational performance, along a path of varied direction.
    Type: Grant
    Filed: October 22, 1997
    Date of Patent: September 28, 1999
    Inventors: Michael C. Shrader, Michael Frazier