Patents by Inventor Michael C. Burr

Michael C. Burr 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).

  • Roller burnishing tool for effecting diminishing stress reversal on annular workpieces
    Patent number: 5095727
    Abstract: A roller burnishing tool is disclosed having inner and outer pluralities of concentrically disposed, precision tapered rolls. A precision tapered annular mandrel is disposed within the inner plurality of rolls and operates to controllably urge the inner plurality of rolls outwardly against a lip of a workpiece inserted between the inner and outer pluralities of rolls. The inner plurality of rolls forces the lip outwardly into contact with the outer rolls, and the pressurized contact of the rolls effects a burnishing action on the surfaces of the lip of the workpiece. In a preferred embodiment, the burnishing tool also includes a pilot stop for receiving an alignment post used to align the workpiece with the burnishing tool.
    Type: Grant
    Filed: January 19, 1990
    Date of Patent: March 17, 1992
    Assignee: Cogsdill Tool Products, Inc.
    Inventors: William J. Westerman, Michael C. Burr, Farin L. Derrick