Patents by Inventor Tris Colaizzi

Tris Colaizzi 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).

  • Method for partially stripping a coating from the surface of a substrate, and related articles and compositions
    Patent number: 6969457
    Abstract: An electrochemical process for selectively stripping at least one coating from the surface of a substrate is disclosed. The substrate (often a turbine engine component) is immersed in a composition through which electrical current flows. The composition includes a halide salt, such as sodium chloride, ammonium chloride, and potassium chloride. In preferred embodiments, the electrical current is direct current (DC). The process is especially useful for selectively removing portions of diffusion aluminide coatings. For example, the additive layer can efficiently be removed, without substantially affecting the underlying diffusion layer or substrate. Related stripping compositions and apparatuses are also described.
    Type: Grant
    Filed: October 21, 2002
    Date of Patent: November 29, 2005
    Assignee: General Electric Company
    Inventors: Leo Spitz MacDonald, Bin Wei, Michel Joseph Shaw, John Robert LaGraff, Warren Davis Grossklaus, Stephen Joseph Ferrigno, Tris Colaizzi
  • Method for partially stripping a coating from the surface of a substrate, and related articles and compositions
    Publication number: 20040074783
    Abstract: An electrochemical process for selectively stripping at least one coating from the surface of a substrate is disclosed. The substrate (often a turbine engine component) is immersed in a composition through which electrical current flows. The composition includes a halide salt, such as sodium chloride, ammonium chloride, and potassium chloride. In preferred embodiments, the electrical current is direct current (DC). The process is especially useful for selectively removing portions of diffusion aluminide coatings. For example, the additive layer can efficiently be removed, without substantially affecting the underlying diffusion layer or substrate. Related stripping compositions and apparatuses are also described.
    Type: Application
    Filed: October 21, 2002
    Publication date: April 22, 2004
    Applicant: General Electric Company
    Inventors: Leo Spitz MacDonald, Bin Wei, Michel Joseph Shaw, John Robert LaGraff, Warren Davis Grossklaus, Stephen Joseph Ferrigno, Tris Colaizzi
  • Method of cleaning turbine component using laser shock peening
    Patent number: 6500269
    Abstract: A method of cleaning airfoils and related turbine engine components that have a crust-like debris deposited on the surface thereof. This method involves subjecting at least the portion of the component having the deposit of the crust-like debris to sufficient laser shock peening to cause the debris on the surface thereof to be loosened therefrom so that the loosened debris can be removed from the component. This loosened debris can then be removed from the component, such as by passing a cleaning fluid through the portion of the component that is subjected to the laser shock peening.
    Type: Grant
    Filed: January 29, 2001
    Date of Patent: December 31, 2002
    Assignee: General Electric Company
    Inventors: James D. Risbeck, Thomas E. Anderson, Stephen J. Ferrigno, Tris Colaizzi
  • Method of cleaning turbine component using laser shock peening
    Publication number: 20020100492
    Abstract: A method of cleaning airfoils and related turbine engine components that have a crust-like debris deposited on the surface thereof. This method involves subjecting at least the portion of the component having the deposit of the crust-like debris to sufficient laser shock peening to cause the debris on the surface thereof to be loosened therefrom so that the loosened debris can be removed from the component. This loosened debris can then be removed from the component, such as by passing a cleaning fluid through the portion of the component that is subjected to the laser shock peening.
    Type: Application
    Filed: January 29, 2001
    Publication date: August 1, 2002
    Inventors: James D. Risbeck, Thomas E. Anderson, Stephen J. Ferrigno, Tris Colaizzi