Patents by Inventor Francis J. Quinn

Francis J. Quinn 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 retrofit therefore
    Patent number: 5259727
    Abstract: A steam turbine with replaceable nozzle portions including a replacement ring element welded to the remaining portion of the original turbine, the replacement ring element having a groove seat with tapered spaced opposing walls to receive a plurality of vane portions releasably locked in the groove, stabilized and sealed to prevent steam leakage therearound.
    Type: Grant
    Filed: November 14, 1991
    Date of Patent: November 9, 1993
    Inventor: Francis J. Quinn