Patents by Inventor Edward S. Hsia

Edward S. Hsia 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).

  • Variable nozzle area turbine vane cooling
    Patent number: 4798515
    Abstract: The cooling insert for a movable vane in a jet engine is divided into plural overlapping forward and aft segregated members, each member being coolant fed through separate vane trunnion areas and each insert is of successively decreasing cross-sectional area. Problems of locally inadequate vane cooling, coolant match point movement, and unequal coolant supply pressures are addressed by the disclosed apparatus. Reuse of the trunnion supplied impingement cooling air for additional cooling functions is also disclosed.
    Type: Grant
    Filed: May 19, 1986
    Date of Patent: January 17, 1989
    Assignee: The United States of America as represented by the Secretary of the Air Force
    Inventors: Edward S. Hsia, John H. Starkweather, William K. Koffel
  • Multiple-impingement cooled structure
    Patent number: 4573865
    Abstract: A multiple-impingement cooled structure, such as for use as a turbine shroud assembly. The structure includes a plurality of baffles which define with an element to be cooled, such as a shroud, a plurality of cavities. Impingement cooling air is directed through holes in one of the baffles to impinge upon only the portion of the shroud in a first cavity. That cooling air is then directed to impinge again upon the portion of the shroud in a second cavity.
    Type: Grant
    Filed: April 2, 1984
    Date of Patent: March 4, 1986
    Assignee: General Electric Company
    Inventors: Edward S. Hsia, Raghuram J. Emani, John H. Starkweather
  • Multiple-impingement cooled structure
    Patent number: 4526226
    Abstract: A multiple-impingement cooled structure, such as for use as a turbine shroud assembly. The structure includes a plurality of baffles which define with an element to be cooled, such as a shroud, a plurality of cavities. Impingement cooling air is directed through holes in one of the baffles to impinge upon only the portion of the shroud in a first cavity. That cooling air is then directed to impinge again upon the portion of the shroud in a second cavity.
    Type: Grant
    Filed: August 31, 1981
    Date of Patent: July 2, 1985
    Assignee: General Electric Company
    Inventors: Edward S. Hsia, Raghuram J. Emani, John H. Starkweather