Patents by Inventor Joseph S. Zabrecky

Joseph S. Zabrecky 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 cooling system for balance piston of a steam turbine and associated methods
    Patent number: 6443690
    Abstract: A steam cooling system (30) and associated methods are provided which have a first high pressure (HP) steam turbine (12) having a straight through configuration, a second intermediate pressure (IP) steam turbine (16) having a straight through configuration positioned adjacent the first HP steam turbine (12), and a balance piston (40) positioned adjacent the inlet (17) of the second IP steam turbine (16) and between the second IP steam turbine (16) and the first HP steam turbine (12). A steam cooling conduit (32) is preferably positioned to have an inlet adjacent the first HP steam turbine (12) and an outlet adjacent the balance piston (40) for providing a steam cooling path therebetween.
    Type: Grant
    Filed: May 5, 1999
    Date of Patent: September 3, 2002
    Assignee: Siemens Westinghouse Power Corporation
    Inventors: Joseph S. Zabrecky, Douglas R. Ulrich