US PATENT SUBCLASS 376 / 409
FUEL COMPONENT STRUCTURE

Current as of: June, 1999
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376 /   HD   INDUCED NUCLEAR REACTIONS: PROCESSES, SYSTEMS, AND ELEMENTS

409FUEL COMPONENT STRUCTURE {10}
410  DF  .~> With means to prevent thinning of the cladding (e.g., amoeba effect)
411  DF  .~> Spherical particles
412  DF  .~> Encased with nonfuel component {9}
426  DF  .~> Plural fuel segments or elements {8}
450  DF  .~> With condition sensing or indicating means
451  DF  .~> Having particular end closure or seal (e.g., weld, plug, cap, etc.) {1}
453  DF  .~> Fuel support or covering provided with fins, projections, prongs, etc.) {1}
455  DF  .~> Hollow, annular, or graduated fuel layers or members (e.g., concentric, helical, etc.)
456  DF  .~> Vented fuel
457  DF  .~> Nonconventional jacket or can material

DEFINITION

Classification: 376/409

FUEL COMPONENT STRUCTURE:

(under the class definition) Subject matter comprising an integral structure the constituent material of which includes, at least in part, a nuclear fuel*.

(1) Note. A patent to be placed as an original into this and indented subclasses may be associated with another reactor component when the other component is so associated with the fuel component that the plural components are treated or handled as one, as when within the fuel component structure there is included some other component structure such as a coolant, moderator, insulator, thermocouple, or other structure.

(2) Note. For processes of fabricating or manufacturing reactor fuel component, search appropriate manufacturing class.

(3) Note. Patents that claim some particular handling of the fuel component are placed as originals in the appropriate subclasses in this class and may be crossed to this and indented subclasses.

(4) Note. The fuel material itself may be solid, liquid, or gaseous.

SEE OR SEARCH THIS CLASS, SUBCLASS:

261+, for patents that claim some particular handling of the fuel component.

347, for patents claiming a fuel separately associated in some particular manner with another reactor component, including a fluid component. SEE OR SEARCH CLASS

29, Metal Working,

400.1+, for methods of assembly and disassembly of fuel elements, and subclass 723 for apparatus for disassembly of fuel elements. See subclass 906 for a cross-reference art collection of documents reflecting to nuclear device making.

148, Metal Treatment,

401, for heat-treated metal stock which may be useful in the production of fuel elements; and subclass 132 for heat-treated actinide metals or alloys.

252, Compositions,

625+, for compositions not otherwise provided for that may be used as fuels or in fabricating fuel elements.

420, Alloys or Metallic Compositions, particularly

1+,.

423, Chemistry of Inorganic Compounds,

249+, for inorganic compounds of the actinide series elements which may be useful as fuel components. 427, Coating Processes,

6, for processes of coating nuclear fuel particles or elements.

501, Compositions: Ceramic, appropriate subclasses for ceramic compositions useful as a nuclear reactor component or fuel element material.