Patents by Inventor Francis William McCooey

Francis William McCooey 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).

  • Epicyclic gearbox
    Patent number: 8517672
    Abstract: An epicyclic gear train includes planetary gears rotatably mounted on spindles supported by an annular carrier and including axially spaced apart forward and aft sets of output teeth extending radially outwardly from a planetary gear hub and axially spaced apart forward and aft roller bearings disposed between planetary gears and spindles. The forward and aft roller bearings are axially aligned with or adjacent to spaced apart forward set of output teeth and input gear respectively. A ring gear meshes with forward set of output teeth and an external gear meshes with aft set of output teeth. An input gear fixedly attached to hub aft of aft set of output teeth and engaged with a sun gear. The output teeth, input gear, ring gear, external gear, and sun gear may all be helical. A turbofan gas turbine engine may include counter-rotatable first and second fan stages driven by a low pressure turbine through the gear train.
    Type: Grant
    Filed: February 23, 2010
    Date of Patent: August 27, 2013
    Assignee: General Electric Company
    Inventor: Francis William McCooey
  • EPICYCLIC GEARBOX
    Publication number: 20110206498
    Abstract: An epicyclic gear train includes planetary gears rotatably mounted on spindles supported by an annular carrier and including axially spaced apart forward and aft sets of output teeth extending radially outwardly from a planetary gear hub and axially spaced apart forward and aft roller bearings disposed between planetary gears and spindles. The forward and aft roller bearings are axially aligned with or adjacent to spaced apart forward set of output teeth and input gear respectively. A ring gear meshes with forward set of output teeth and an external gear meshes with aft set of output teeth. An input gear fixedly attached to hub aft of aft set of output teeth and engaged with a sun gear. The output teeth, input gear, ring gear, external gear, and sun gear may all be helical. A turbofan gas turbine engine may include counter-rotatable first and second fan stages driven by a low pressure turbine through the gear train.
    Type: Application
    Filed: February 23, 2010
    Publication date: August 25, 2011
    Inventor: Francis William McCooey
  • Methods and apparatus for performing engine maintenance
    Patent number: 7685826
    Abstract: A maintenance tool for a gas turbine engine includes a housing coupled to the gas turbine engine, and a drive portion inserted at least partially through the housing. The drive portion is configured to enable the gas turbine engine to be selectively rotated during non-operational periods. Moreover, the maintenance tool is coupled to the gas turbine engine during normal operation.
    Type: Grant
    Filed: December 12, 2005
    Date of Patent: March 30, 2010
    Assignee: General Electric Company
    Inventors: Francis William McCooey, John Joseph Hudak