Patents by Inventor Edward Dusza

Edward Dusza 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).

  • Integral tandem bearing for high speed flexible shafts
    Patent number: 7581889
    Abstract: An integral tandem bearing assembly for supporting a main shaft in a gas turbine engine is provided. The tandem bearing assembly comprises two bearing assemblies connected by integrated inner ring.
    Type: Grant
    Filed: September 8, 2006
    Date of Patent: September 1, 2009
    Assignee: Pratt & Whitney Canada Corp.
    Inventors: Vittorio Bruno, Edward Dusza, Michel Labbe, Tibor Urac
  • Integral tandem bearing for high speed flexible shafts
    Publication number: 20080063333
    Abstract: An integral tandem bearing assembly for supporting a main shaft in a gas turbine engine is provided. The tandem bearing assembly comprises two bearing assemblies connected by integrated inner ring.
    Type: Application
    Filed: September 8, 2006
    Publication date: March 13, 2008
    Applicant: Pratt & Whitney Canada Corp.
    Inventors: Vittorio Bruno, Edward Dusza, Michel Labbe, Tibor Urac
  • Oil annulus to circumferentially equalize oil feed to inner race of a bearing
    Patent number: 6511228
    Abstract: A ball bearing assembly has an outer ring and an inner ring defining the respective outer and inner races, and a plurality of balls separated on the circumference by a cage ring. The inner ring is split into a loaded half and a non-loaded half. The cage lands on the inner ring halves support the cage ring. An annular groove having a non-rectangular cross-section is disposed at the inner ring bore and at the split face. A plurality of radial grooves extend in the split face of one inner ring half to form radial passages between the annular groove and the inner race for directing oil under centrifugal forces collected in the annular groove, into the inner race. Each radial passage has an aperture in the annular groove located in an intermediate section thereof so that the bottom section of the annular groove acts as a reservoir to feed all the radial passages as well as provide a longer residence time for the oil on loaded inner ring surfaces.
    Type: Grant
    Filed: May 8, 2001
    Date of Patent: January 28, 2003
    Assignee: Pratt & Whitney Canada Corp.
    Inventor: Edward Dusza
  • Oil annulus to circumferentially equalize oil feed to inner race of a bearing
    Publication number: 20020168124
    Abstract: A ball bearing assembly has an outer ring and an inner ring defining the respective outer and inner races, and a plurality of balls separated on the circumference by a cage ring. The inner ring is split into a loaded half and a non-loaded half. The cage lands on the inner ring halves support the cage ring. An annular groove having a non-rectangular cross-section is disposed at the inner ring bore and at the split face. A plurality of radial grooves extend in the split face of one inner ring half to form radial passages between the annular groove and the inner race for directing oil under centrifugal forces collected in the annular groove, into the inner race. Each radial passage has an aperture in the annular groove located in an intermediate section thereof so that the bottom section of the annular groove acts as a reservoir to feed all the radial passages as well as provide a longer residence time for the oil on loaded inner ring surfaces.
    Type: Application
    Filed: May 8, 2001
    Publication date: November 14, 2002
    Inventor: Edward Dusza