Patents by Inventor Joseph Andrew Lemsky

Joseph Andrew Lemsky 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).

  • Alloy component including a fine grain structure, a coarse grain structure and a transitional structure
    Patent number: 8323424
    Abstract: An alloy disc includes a hub portion, a rim portion and a web portion disposed between the hub portion and the rim portion. The disc includes a fine grain structure substantially in a first region of the disc and a coarse grain structure substantially in a second region of the disc. The fine grain structure may be in the hub portion of the disc, and the coarse grain structure may be in the rim portion of the disc. The coarse grain structure may extend a greater distance radially inwardly from the rim portion into the web portion on the first axial end of the disc than on the second axial end of the disc. The fine grain structure may extend a greater distance radially outwardly from the hub portion into the web portion on the second axial end of the disc than on the first axial end of the disc.
    Type: Grant
    Filed: April 29, 2011
    Date of Patent: December 4, 2012
    Assignee: Rolls-Royce PLC
    Inventors: Robert J. Mitchell, David Ulrich Furrer, Joseph Andrew Lemsky, Mark C. Hardy