Patents by Inventor Douglas J. Zabawa

Douglas J. Zabawa 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).

  • Attachment for a bladed rotor
    Patent number: 7153098
    Abstract: Rotor blades 40 for a bladed rotor feature an attachment 44 that improves the energy absorption capability of a snap ring 60 used as one component of a blade axial retention system. The attachment plastically deforms the snap ring rather than shearing through it in response to abnormally high forces exerted on the blade.
    Type: Grant
    Filed: March 31, 2004
    Date of Patent: December 26, 2006
    Assignee: United Technologies Corporation
    Inventor: Douglas J. Zabawa
  • Chamfered attachment for a bladed rotor
    Patent number: 6846159
    Abstract: Rotor blades 40 for a bladed rotor feature a chamfered attachment 44 that improves the energy absorption capability of a snap ring 60 used as one component of a blade axial retention system. The chamfered attachment plastically deforms the snap ring rather than shearing through it in response to abnormally high forces exerted on the blade.
    Type: Grant
    Filed: April 16, 2002
    Date of Patent: January 25, 2005
    Assignee: United Technologies Corporation
    Inventors: Douglas J. Zabawa, Douglas A. Welch, William R. Graves
  • Attachment for a bladed rotor
    Publication number: 20040184919
    Abstract: Rotor blades 40 for a bladed rotor feature an attachment 44 that improves the energy absorption capability of a snap ring 60 used as one component of a blade axial retention system. The attachment plastically deforms the snap ring rather than shearing through it in response to abnormally high forces exerted on the blade.
    Type: Application
    Filed: March 31, 2004
    Publication date: September 23, 2004
    Inventor: Douglas J. Zabawa
  • Chamfered attachment for a bladed rotor
    Publication number: 20030194319
    Abstract: Rotor blades 40 for a bladed rotor feature a chamfered attachment 44 that improves the energy absorption capability of a snap ring 60 used as one component of a blade axial retention system. The chamfered attachment plastically deforms the snap ring rather than shearing through it in response to abnormally high forces exerted on the blade.
    Type: Application
    Filed: April 16, 2002
    Publication date: October 16, 2003
    Inventors: Douglas J. Zabawa, Douglas A. Welch, William R. Graves