Patents by Inventor Steven DeLessio

Steven DeLessio 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).

  • Steam turbine and rotating blade
    Patent number: 8038404
    Abstract: A blade mountable to a disc comprises a blade platform and a blade root extending from the blade platform. The blade root comprises first, second, and third hooks and first, second and third necks. Each hook comprises a contact surface and a non-contact surface, and an angle between each contact surface and each non-contact surface is optimized to reduce local and average stresses.
    Type: Grant
    Filed: July 16, 2007
    Date of Patent: October 18, 2011
    Assignee: Nuovo Pignone Holdings, S.p.A.
    Inventors: Amir Mujezinovic, Steven DeLessio
  • Steam turbine rotating blade
    Patent number: 7946823
    Abstract: A rotating blade for a steam turbine includes a root section and an airfoil section contiguous with the root section. The airfoil section is shaped to optimize aerodynamic performance while providing optimized flow distribution and minimal centrifugal and bending stresses. The blade also includes a tip section continuous with the airfoil section, and a cover formed as part of the tip section. The cover defines a radial seal that serves to minimize tip losses. The rotating blade is capable of running at operating speeds between 5626 and 11250 rotations per minute.
    Type: Grant
    Filed: July 16, 2007
    Date of Patent: May 24, 2011
    Assignee: Nuovo Pignone Holdings, S.p.A.
    Inventors: Amir Mujezinovic, Jonathon Slepski, Steven DeLessio
  • Steam Turbine Rotating Blade
    Publication number: 20100021306
    Abstract: A rotating blade for a steam turbine includes a root section and an airfoil section contiguous with the root section. The airfoil section is shaped to optimize aerodynamic performance while providing optimized flow distribution and minimal centrifugal and bending stresses. The blade also includes a tip section continuous with the airfoil section, and a cover formed as part of the tip section. The cover defines a radial seal that serves to minimize tip losses. The rotating blade is capable of running at operating speeds between 5626 and 11250 rotations per minute.
    Type: Application
    Filed: July 16, 2007
    Publication date: January 28, 2010
    Inventors: Amir Mujezinovic, Jonathon Slepski, Steven DeLessio
  • STEAM TURBINE AND ROTATING BLADE
    Publication number: 20090022591
    Abstract: A blade mountable to a disc comprises a blade platform and a blade root extending from the blade platform. The blade root comprises first, second, and third hooks and first, second and third necks. Each hook comprises a contact surface and a non-contact surface, and an angle between each contact surface and each non-contact surface is optimized to reduce local and average stresses.
    Type: Application
    Filed: July 16, 2007
    Publication date: January 22, 2009
    Inventors: Amir Mujezinovic, Steven DeLESSIO