Patents by Inventor David J. Mathiau

David J. Mathiau 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).

  • POLYMERIC FOAMS FOR HOLLOW CAVITIES
    Publication number: 20230392504
    Abstract: A hollow fan blade comprises a sheath, an airfoil and a cover. The sheath forms a pressure side wall and has an exterior surface. The airfoil forms a suction side wall and has an exterior surface. There are a plurality of ribs extending between the pressure side wall and the suction side wall, where the plurality of ribs partition the hollow airfoil into one or more cavities. The cover is disposed in the one or more cavities to protect the plurality of ribs. The cavities are filled with a polymeric foam.
    Type: Application
    Filed: June 3, 2022
    Publication date: December 7, 2023
    Inventors: Kerry Lynn Davis-Amendola, John Harner, David J. Mathiau, Jr.
  • Low density hybrid knife seal
    Patent number: 11661855
    Abstract: A hybrid abradable seal including a stator substrate having an external surface; a casing coupled to the external surface, the casing including radial walls extending radially from the external surface; an abradable material disposed within the casing; the abradable material and the casing being coupled together and configured to resist a deflection responsive to engine gas loads.
    Type: Grant
    Filed: October 25, 2021
    Date of Patent: May 30, 2023
    Assignee: Raytheon Technologies Corporation
    Inventors: John Harner, Kerry Lynn Davis, David J. Mathiau
  • LOW DENSITY HYBRID KNIFE SEAL
    Publication number: 20230131676
    Abstract: A hybrid abradable seal including a stator substrate having an external surface; a casing coupled to the external surface, the casing including radial walls extending radially from the external surface; an abradable material disposed within the casing; the abradable material and the casing being coupled together and configured to resist a deflection responsive to engine gas loads.
    Type: Application
    Filed: October 25, 2021
    Publication date: April 27, 2023
    Applicant: Raytheon Technologies Corporation
    Inventors: John Harner, Kerry Lynn Davis, David J. Mathiau