Patents by Inventor Frank P. Petrek

Frank P. Petrek 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).

  • Composite wheel for tracked vehicles
    Patent number: 6746064
    Abstract: The present invention relates to a method of manufacturing an all metal, single or dual, flanged composite railroad wheel for rollingly engaging a metal rail. A unitary metal railroad wheel having at least one radially extending wheel flange, for intermittently engaging the side surface of the rail, is provided with a metallic inlaid material having a coefficient of friction lower than the coefficient of friction of the wheel's main body. The inlaid low friction material forms an annular band circumscribing the inside surface of the wheel's radially extending flange.
    Type: Grant
    Filed: November 6, 2002
    Date of Patent: June 8, 2004
    Assignee: Xtek. Inc.
    Inventors: Frank P. Petrek, Steven J. Shaffer