Patents by Inventor Donald G. Nordstrom

Donald G. Nordstrom 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).

  • Thin abradable ceramic air seal
    Patent number: 4936745
    Abstract: An abradable coating is described for interaction with a abrasive gas turbine engine component to provide sealing. The abradable coating comprises yttria stabilized zirconia with intentional porosity which is applied by plasma spraying to a MCrAlY bond coat which in turn rest on a superalloy substrate. The coating system is applied by plasma spraying. The coating system is adapted to interact with an abrasive coated abrasive treated gas turbine engine component.
    Type: Grant
    Filed: December 16, 1988
    Date of Patent: June 26, 1990
    Assignee: United Technologies Corporation
    Inventors: Raymond W. Vine, Donald A. Robbins, Donald G. Nordstrom, Mark B. Goodstein
  • Method for preventing closure of cooling holes in hollow, air cooled turbine engine components during application of a plasma spray coating
    Patent number: 4743462
    Abstract: This invention relates to the application of plasma sprayed coatings to the surface of components which have small holes therein, such as hollow, air cooled blades or vanes used in turbine engines. Coating material is prevented from depositing on the wall surface of the holes by the presence of fugitive plugs in the holes during the coating process. The plugs are removed after the coating has been applied, resulting in the holes being open and unobstructed.
    Type: Grant
    Filed: July 14, 1986
    Date of Patent: May 10, 1988
    Assignee: United Technologies Corporation
    Inventors: Thomas J. Radzavich, Donald G. Nordstrom, Keith D. Sheffler