Patents by Inventor Michael Anthony Marzean

Michael Anthony Marzean 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).

  • Protective grid attachment
    Patent number: 9053826
    Abstract: A fuel assembly for a pressurized water reactor that has a protective grid attached to the bottom nozzle through a spacer insert captured between a control rod guide thimble end plug and the bottom nozzle. A thimble screw attaches the bottom nozzle to the control rod guide thimble end plug through a central opening in the spacer insert. The control rod guide thimble end plug is provided with a raised annular boss that encircles the thimble screw shank and rests against the upper surface of the bottom nozzle through the opening in the spacer insert. The opening in the spacer insert is large enough to provide both an axial and radial clearance between the spacer insert and the end plug to accommodate differences in thermal expansion.
    Type: Grant
    Filed: March 3, 2010
    Date of Patent: June 9, 2015
    Assignee: Westinghouse Electric Company LLC
    Inventors: Paul Marcus Evans, Michael Anthony Marzean
  • NUCLEAR REACTOR FUEL ASSEMBLY
    Publication number: 20140029713
    Abstract: A fuel assembly for a nuclear reactor that employs dissimilar materials for the fuel assembly grid and the control rod guide thimbles. The guide thimbles are secured to the grid employing a through grid cell sleeve that is welded to the grid and spot weld rings that are secured over the sleeve and welded directly to the guide tube through windows in the sleeve.
    Type: Application
    Filed: January 15, 2008
    Publication date: January 30, 2014
    Inventors: Paul Marcus Evans, Harry Allen Pearce, Michael Anthony Marzean, David Anthony Boatwright
  • PROTECTIVE GRID ATTACHMENT
    Publication number: 20110216873
    Abstract: A fuel assembly for a pressurized water reactor that has a protective grid attached to the bottom nozzle through a spacer insert captured between a control rod guide thimble end plug and the bottom nozzle. A thimble screw attaches the bottom nozzle to the control rod guide thimble end plug through a central opening in the spacer insert. The control rod guide thimble end plug is provided with a raised annular boss that encircles the thimble screw shank and rests against the upper surface of the bottom nozzle through the opening in the spacer insert. The opening in the spacer insert is large enough to provide both an axial and radial clearance between the spacer insert and the end plug to accommodate differences in thermal expansion.
    Type: Application
    Filed: March 3, 2010
    Publication date: September 8, 2011
    Applicant: Westinghouse Electric Company LLC
    Inventors: Paul Marcus Evans, Michael Anthony Marzean
  • SPLIT SPRING ANTI-FRETTING FUEL ROD SUPPORT STRUCTURE
    Publication number: 20110200160
    Abstract: A nuclear fuel assembly grid having a vertical, elongated, split spring on each wall of the cells that support fuel rods to provide eight, co-planar, point contacts of support for the fuel rod.
    Type: Application
    Filed: February 16, 2010
    Publication date: August 18, 2011
    Applicant: Westinghouse Electric Company
    Inventors: Paul Marcus Evans, Richard P. Broders, Michael Anthony Marzean, Michael Winegardner, Adolfo Reparaz