Patents by Inventor Bobby L. Walters

Bobby L. Walters 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: 5068791
    Abstract: A wire guidance system for a materials handling vehicle, such as a turret stockpicker, detects an alternating signal carried by a buried wire. Two sets of four sensors each are carried at either end of the vehicle. These sensors define regions, and a procedure is provided to determine in which region the wire is located. The distance and angle of the vehicle is determined by reference to the distance measurements of each sensor set, as calculated by a microcomputer. A self testing circuit is provided to insure proper operation of the sensors and associated circuitry.
    Type: Grant
    Filed: December 6, 1989
    Date of Patent: November 26, 1991
    Assignee: Crown Equipment Corporation
    Inventors: Kim A. Klopfleisch, Tim A. Wellman, Willard D. Kaiser, Mark J. Koenig, Richard W. Ridgway, Bobby L. Walters, Matthew S. Zelinski