Patents by Inventor JoAnn Barbieri

JoAnn Barbieri 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 linear friction welding and product made by such method
    Patent number: 6219916
    Abstract: A process for joining a base for an airfoil to a disk for an integrally bladed rotor stage in a gas turbine engine includes providing a disk having a radially outer rim with a slot defined therein by a recessed surface, and further includes providing a base having a longitudinally extending root portion facing opposite a longitudinally extending support portion for supporting the airfoil. The root portion has a root surface and the support portion has an outer surface. The process further includes bringing the root surface of the root portion into contact with the recessed surface bounding the slot, applying pressure and relative movement between the base and the rim to achieve during welding, substantial contiguity between the root surface and the recessed surface over the area of the recessed surface, resulting in a substantially continuous linear friction weld between the base and the rim.
    Type: Grant
    Filed: December 19, 1997
    Date of Patent: April 24, 2001
    Assignee: United Technologies Corporation
    Inventors: Herbert L. Walker, Stephen A. Hilton, JoAnn Barbieri, John P. Fournier, Richard D. Trask
  • Method for linear friction welding and product made by such method
    Patent number: 6106233
    Abstract: A process for joining a base for an airfoil to a disk for an integrally bladed rotor stage in a gas turbine engine includes providing a disk having a radially outer rim with a slot defined therein by a recessed surface, and further includes providing a base having a longitudinally extending root portion facing opposite a longitudinally extending support portion for supporting the airfoil. The root portion has a root surface and the support portion has an outer surface. The process further includes bringing the root surface of the root portion into contact with the recessed surface bounding the slot, applying pressure and relative movement between the base and the rim to achieve during welding, substantial contiguity between the root surface and the recessed surface over the area of the recessed surface, resulting in a substantially continuous linear friction weld between the base and the rim.
    Type: Grant
    Filed: January 25, 1999
    Date of Patent: August 22, 2000
    Assignee: United Technologies Corporation
    Inventors: Herbert L. Walker, Stephen A. Hilton, JoAnn Barbieri, John P. Fournier, Richard D. Trask