Patents by Inventor Robert Zondlo

Robert Zondlo 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: 5461292
    Abstract: A remote control method of guidance for a work vehicle including a handheld control unit, an antenna/transponder placed on the periphery of the worksite, a controlling unit on the work vehicle itself. The control unit compares timing signals to subsequently control of the speed of independently powered wheels. There is a manual and automatic mode of control for the vehicle. The vehicle is positioned at a starting point by the user, and upon activation of the automatic mode, a timing pulse, either ultrasonic or electromagnetic is issued from the control unit on the vehicle. When the pulse is sensed by the transponder on the antenna, a responding pulse is transmitted. This is, in turn, received by the vehicle and thus a base time is set for the interval between the transmission of the pulse and the return signal from the transponder, the interval being indicative of the distance between them.
    Type: Grant
    Filed: July 18, 1994
    Date of Patent: October 24, 1995
    Inventor: Robert Zondlo