Patents by Inventor Joseph John Swiderski

Joseph John Swiderski 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).

  • Concentricity ring
    Patent number: 6309177
    Abstract: There is provided a method of assembling a gas turbine engine using a concentricity ring to compensate for assembly tolerances. The blade tips of the gas turbine during turbine rotation define a tip surface of rotation concentric the shaft axis. Due to cumulative tolerances in part manufacture and assembly, the shaft axis is invariably radially eccentric the engine axis at the axial position of the turbine an assembly eccentricity within the range between zero and a predetermined allowable assembly tolerance.
    Type: Grant
    Filed: June 8, 1999
    Date of Patent: October 30, 2001
    Assignee: Pratt & Whitney Canada Corp.
    Inventors: Joseph John Swiderski, William Donald Moase