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 …

Legal parties

Inventors (applicants): Paul M. Evans, David A. Boatwright, Michael A. Marzean, Harry A. Pearce
Assignees (initial): Westinghouse Electric Company LLC (Cranberry Township, US)
Agents: Joseph C. Spadacene (attorney), Westinghouse Electric Company LLC (attorney)

The application was examined by Jack W Keith (USPTO dept. 3646), Marshall O'Connor


  • 1. A fuel assembly for a nuclear reactor comprising: …
  • 2. The fuel assembly of claim 1 wherein the tubular sleeve has a second opening …
  • 3. The fuel assembly of claim 1 wherein a window is formed in an axial …

Cited documents


  • Kmonk et al. US 3920516 A / 376/441, Nov. 1, 1975
  • Petit US 5966419 A / 376/441, Oct. 1, 1999
  • Anthony et al. US 4135972 A / 376/442, Jan. 1, 1979
  • Patterson et al. US 3791466 A / 376/442, Feb. 1, 1974
  • Bezold US 4124443 A / 376/434, Nov. 1, 1978
  • Canat et al. US 5263072 A / 376/439, Nov. 1, 1993
  • Evans et al. US 7149273 B2 / 376/438, Dec. 1, 2006
  • Flora et al. US 4081324 A / 376/441, Mar. 1, 1978
  • Daublebsky US 4053080 A / 220/586, Oct. 1, 1977
  • Stieglbauer et al. US 7511244 B2 / 219/91.2, Mar. 1, 2009


Brief Description of the Drawings

A further understanding of the invention can be gained from the following description of the preferred embodiments when read in conjunction with the accompanying drawings in which: FIG. 1 is a perspective …


Cross-Reference to Related Applications

This application is related to U.S. patent application Ser. No. 11/764,540 filed Jun. 16, 2007 and assigned to the assignee of this …

Description of the Preferred Embodiments

For convenience, this invention will be described with reference to a pressurized water reactor, though it should be appreciated that this invention may be used with other reactor designs …

Fuel Assembly

Referring now to the drawings, and particularly to FIG. 2 , there is shown an elevational view of a nuclear reactor fuel assembly, represented in vertically shortened form and being …

More details about Nuclear Reactor Fuel Assembly

Miscellaneous patent data

The grant number is 08681929, the published agent's company name - Westinghouse Electric Company LLC, the applicant's address - Columbia, SC, the applicant's name is Marzean Michael A., the claim number 1 is selected as exemplary, the patent particularly claims a fuel assembly for a nuclear reactor comprising…, the exemplary patent drawings are Nuclear Reactor Fuel Assembly, Perspective view of a prior, Plan view of the grid, Elevational view of the fuel, the invention details are shown in 7 figures, located in Cranberry Township (US), the assignee organization is Westinghouse Electric Company LLC, the patent was granted on Mar. 25, 2014, originally classified under With fuel element contacting protuberance or projection, invented by Paul M. Evans et al., the assignee is categorized as a United States company, the application publication date is Jan. 15, 2008, the application was examined by Jack W Keith, Marshall O'Connor (3646 USPTO department), claims 1-16 comprise the invention scope, numbered 12/014,133 (application), the inventor's city is Lexington, state - SC, the published inventor's name is Boatwright David A., similar classification categories are Remote inspection of vessels, e.g. pressure vessels, jet pump, Aluminum, silicon, Particular materials, Means for preventing undesired asymmetric expansion of the complete structure, Methods of Making Fusion Fuel Targets, Shape of its constituent parts, Control of Reactor, Control of nuclear reaction, Assembling the bundles, the invention is titled Nuclear Reactor Fuel Assembly, the term of the patent was extended by 1727 days, the patent is illustrated by 7 drawings.

Invention classification information

The invention is classified under Spacer grids, Including grid, Plural fuel segments or elements, Fuel Component Structure, With fuel element contacting protuberance or projection, In pack or bundle. The designated search classifications include Including grid, Encased with nonfuel component, In pack or bundle, Having provision or structure for insertion of control elements therein, With coolant flow bypass means.

Patent details
Publication number 08681929
Publication date Mar. 25, 2014
Kind code B2
Application number 12/014,133
Application date Jan. 15, 2008
Application type U
Application series code 12
Extension term 1727
National classification 376/442
Total number of claims 16
Exemplary claims 1
Number of drawings 7
Number of figures 7
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