Patents by Inventor Douglas F. Long

Douglas F. Long 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).

  • Edge-sealed fixture for processing CMC
    Patent number: 12311578
    Abstract: A fixture for processing a ceramic matrix composite article includes first and second tool segments that each have an exterior side and an interior side. The interior side has a border mate face, and the interior side of the first tool segment faces the interior side of the second tool segment such that the border mate faces align and circumscribe a working region for holding a fiber preform that is to be coated with a ceramic material. The tool segments each having an array of through-holes that open to the working region to permit inflow of gaseous precursor into the working region. A seal circumscribes the working region and blocks a gap between the border mate faces to limit inflow of the gaseous precursor through the gap into the working region.
    Type: Grant
    Filed: November 29, 2022
    Date of Patent: May 27, 2025
    Assignee: RTX CORPORATION
    Inventors: Evan B. Callaway, Zachary Paul Konopaske, Olivier H. Sudre, Douglas F. Long
  • Ceramic matrix composite tooling for chemical vapor infiltration process
    Patent number: 12187656
    Abstract: A tooling assembly suitable for use in infiltrating a fibrous preform comprises a first perforated plate having an outer surface and an oppositely disposed inner surface defining a plate thickness therebetween, and a plurality of tapered holes extending through the thickness. Each hole of the plurality of tapered holes has a first diameter at the outer surface and a second diameter at the inner surface, and the first diameter is greater than the second diameter.
    Type: Grant
    Filed: September 30, 2022
    Date of Patent: January 7, 2025
    Inventors: Ying She, Afshin Bazshushtari, Sergio Calabrese, Douglas F. Long, Andrew Joseph Lazur
  • EDGE-SEALED FIXTURE FOR PROCESSING CMC
    Publication number: 20240173893
    Abstract: A fixture for processing a ceramic matrix composite article includes first and second tool segments that each have an exterior side and an interior side. The interior side has a border mate face, and the interior side of the first tool segment faces the interior side of the second tool segment such that the border mate faces align and circumscribe a working region for holding a fiber preform that is to be coated with a ceramic material. The tool segments each having an array of through-holes that open to the working region to permit inflow of gaseous precursor into the working region. A seal circumscribes the working region and blocks a gap between the border mate faces to limit inflow of the gaseous precursor through the gap into the working region.
    Type: Application
    Filed: November 29, 2022
    Publication date: May 30, 2024
    Inventors: Evan B. Callaway, Zachary Paul Konopaske, Olivier H. Sudre, Douglas F. Long
  • CERAMIC MATRIX COMPOSITE TOOLING FOR CHEMICAL VAPOR INFILTRATION PROCESS
    Publication number: 20240109816
    Abstract: A tooling assembly suitable for use in infiltrating a fibrous preform comprises a first perforated plate having an outer surface and an oppositely disposed inner surface defining a plate thickness therebetween, and a plurality of tapered holes extending through the thickness. Each hole of the plurality of tapered holes has a first diameter at the outer surface and a second diameter at the inner surface, and the first diameter is greater than the second diameter.
    Type: Application
    Filed: September 30, 2022
    Publication date: April 4, 2024
    Inventors: Ying She, Afshin Bazshushtari, Sergio Calabrese, Douglas F. Long, Andrew Joseph Lazur