Patents by Inventor Theodore C. Ptacek

Theodore C. Ptacek 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).

  • Aluminum alloy motorcycle wheel having an extruded rim shrink fitted and resin bonded to a die cast hub-spoke unit
    Patent number: 4256348
    Abstract: A lightweight motorcycle wheel and method of making the same comprising a die cast alumnium alloy hub and spoke unit around which an extruded aluminum alloy drop center rim is shrinkfitted and bonded by high strength thermosetting resin adhesive between coaxial cylindrical walls of said rim and unit.
    Type: Grant
    Filed: June 4, 1979
    Date of Patent: March 17, 1981
    Assignee: Lester Industries, Inc.
    Inventors: Thomas J. Lester, Theodore C. Ptacek