Patents by Inventor Thomas Gresham

Thomas Gresham 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).

  • Helically actuated variable bearing damper
    Patent number: 10161264
    Abstract: A bearing damper assembly for a bearing compartment of a gas turbine engine includes a squirrel cage, a bearing support, an outer sleeve, and an inner sleeve. The bearing support is disposed radially outward from a portion of the squirrel cage. The outer sleeve extends axially from the bearing support. The inner sleeve is attached to the squirrel cage and is disposed radially inward from the outer sleeve. An outward surface of the inner sleeve has a first contoured portion having a first axially extending contour and an inner surface of the outer sleeve has a second contoured portion having a second axially extending contour. The outward surface of the inner sleeve and the inner surface of the outer sleeve define a gap extending between the first contoured portion and the second contoured portion. The gap forms a fluid damper.
    Type: Grant
    Filed: April 24, 2017
    Date of Patent: December 25, 2018
    Assignee: United Technologies Corporation
    Inventors: Jason Husband, Thomas Gresham, Michael D. Greenberg
  • HELICALLY ACTUATED VARIABLE BEARING DAMPER
    Publication number: 20180306061
    Abstract: A bearing damper assembly for a bearing compartment of a gas turbine engine includes a squirrel cage, a bearing support, an outer sleeve, and an inner sleeve. The bearing support is disposed radially outward from a portion of the squirrel cage. The outer sleeve extends axially from the bearing support. The inner sleeve is attached to the squirrel cage and is disposed radially inward from the outer sleeve. An outward surface of the inner sleeve has a first contoured portion having a first axially extending contour and an inner surface of the outer sleeve has a second contoured portion having a second axially extending contour. The outward surface of the inner sleeve and the inner surface of the outer sleeve define a gap extending between the first contoured portion and the second contoured portion. The gap forms a fluid damper.
    Type: Application
    Filed: April 24, 2017
    Publication date: October 25, 2018
    Inventors: Jason Husband, Thomas Gresham, Michael D. Greenberg