Patents by Inventor Rebecca J. Boczkaja

Rebecca J. Boczkaja 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).

  • Cleaning of internal passages of airfoils
    Patent number: 6475289
    Abstract: A chemical cleaning method for cleaning an internal passage of an engine-run gas turbine engine airfoil wherein the airfoil is immersed in an inorganic hydroxide medium at superambient temperature and atmospheric pressure for a short time to remove accumulated oxides and dirt from the internal passage. The hydroxide medium can comprise molten KOH and immersion times of the engine-run airfoil not exceeding 10 minutes are involved.
    Type: Grant
    Filed: December 19, 2000
    Date of Patent: November 5, 2002
    Assignee: Howmet Research Corporation
    Inventors: John E. Schilbe, Rebecca J. Boczkaja, Bruce M. Warnes
  • Cleaning of internal passages of airfoils
    Publication number: 20020074017
    Abstract: A chemical cleaning method for cleaning an internal passage of an engine-run gas turbine engine airfoil wherein the airfoil is immersed in an inorganic hydroxide medium at superambient temperature and atmospheric pressure for a short time to remove accumulated oxides and dirt from the internal passage. The hydroxide medium can comprise molten KOH and immersion times of the engine-run airfoil not exceeding 10 minutes are involved.
    Type: Application
    Filed: December 19, 2000
    Publication date: June 20, 2002
    Inventors: John E. Schilbe, Rebecca J. Boczkaja, Bruce M. Warnes