Patents by Inventor Larry E. Fritschel

Larry E. Fritschel 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).

  • Method and apparatus for measuring tire parameters
    Patent number: 5245867
    Abstract: A method and apparatus for circumferentially measuring tread wear on a tire. A laser probe sequentially scans each of the ribs of a tire, obtaining data respecting the tread depth at various points therealong. This data is employed for each rib to determine heel-to-toe irregular wear of the lugs thereof and to also determine a total wear index indicative of the degree of wear of the lugs. The method and apparatus is also adapted to laterally scan the tire sidewall to obtain data therefrom for the ascertaining of anomalies therein.
    Type: Grant
    Filed: December 16, 1991
    Date of Patent: September 21, 1993
    Assignee: Bridgestone Corporation
    Inventors: H. James Sube, Larry E. Fritschel, James F. Siegfried, Arthur J. Dory, John L. Turner