Patents by Inventor Scott D. Hjelm

Scott D. Hjelm 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).

  • Platforms with curved side edges and gas turbine engine systems involving such platforms
    Patent number: 8257045
    Abstract: Platforms with curved side edges and gas turbine engine systems involving such platforms are provided. In this regard, a representative airfoil assembly for a gas turbine engine includes: a platform having a gas path side, a non-gas path side, a leading edge, a trailing edge, a first side edge extending between the leading edge and the trailing edge and exhibiting a first curve along a length thereof, and a second side edge extending between the leading edge and the trailing edge and exhibiting a second curve along a length thereof; and an airfoil extending from the gas path side of the platform; the platform and the airfoil exhibiting a unitary construction such that a continuous exterior surface blends from the airfoil to the platform.
    Type: Grant
    Filed: August 15, 2008
    Date of Patent: September 4, 2012
    Assignee: United Technologies Corp.
    Inventors: Brandon W. Spangler, Jeffrey S. Beattie, Scott D. Hjelm
  • Turbine airfoil with platform cooling
    Patent number: 8240981
    Abstract: Convective cooling of gas turbine engine airfoil platforms is enhanced by grooving the interface of the platforms with corresponding platform-to-platform seals, thereby accelerating cooling airflow over the platform surfaces.
    Type: Grant
    Filed: November 2, 2007
    Date of Patent: August 14, 2012
    Assignee: United Technologies Corporation
    Inventors: Brandon W. Spangler, Corneil S. Paauwe, Christopher J. Lehane, Anita L. Tracy, John D. Wiedemer, Scott D. Hjelm
  • Platforms with Curved Side Edges and Gas Turbine Engine Systems Involving Such Platforms
    Publication number: 20100040460
    Abstract: Platforms with curved side edges and gas turbine engine systems involving such platforms are provided. In this regard, a representative airfoil assembly for a gas turbine engine includes: a platform having a gas path side, a non-gas path side, a leading edge, a trailing edge, a first side edge extending between the leading edge and the trailing edge and exhibiting a first curve along a length thereof, and a second side edge extending between the leading edge and the trailing edge and exhibiting a second curve along a length thereof; and an airfoil extending from the gas path side of the platform; the platform and the airfoil exhibiting a unitary construction such that a continuous exterior surface blends from the airfoil to the platform.
    Type: Application
    Filed: August 15, 2008
    Publication date: February 18, 2010
    Applicant: UNITED TECHNOLOGIES CORP.
    Inventors: Brandon W. Spangler, Jeffrey S. Beattie, Scott D. Hjelm
  • Turbine airfoil with platform cooling
    Publication number: 20090116953
    Abstract: Convective cooling of gas turbine engine airfoil platforms is enhanced by grooving the interface of the platforms with corresponding platform-to-platform seals, thereby accelerating cooling airflow over the platform surfaces.
    Type: Application
    Filed: November 2, 2007
    Publication date: May 7, 2009
    Inventors: Brandon W. Spangler, Corneil S. Paauwe, Christopher J. Lehane, Anita L. Tracy, John D. Wiedemer, Scott D. Hjelm