Did You Know...
...that several people are credited with the invention of the flush toilet? Most people have heard of Thomas Crapper (1837-1910), the sanitary engineer who invented the valve-and-siphon arrangement that made the modern toilet possible. Another claimant to "the throne" was British inventor Alexander Cumming who patented a toilet in 1775. Then there's a nameless Minoan (a native of ancient Crete) who lived 4,000 years ago who supposedly was ahead of his time and created the first flush toilet!
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| Number | Title | Issue Date |
| 7526058 | Rod assembly for nuclear reactors A rod assembly for a fuel bundle of a nuclear reactor may include an upper end piece, lower end piece and a plurality of rod segments attached between the upper and lower end pieces and to each other so as to form an axial length of the rod assembly. The rod assembl... | 04/28/2009 |
| 7430267 | Multi-core fuel rod for research reactor and manufacturing method thereof The present invention relates to a multi-core fuel rod for research reactor and, more particularly, to a multi-core fuel rod for research reactor in which monolithic fuel cores made of uranium-molybdenum alloy are disposed in an aluminum matrix in a multi-core form.... | 09/30/2008 |
| 7349518 | Boiling water reactor core and fuel assemblies therefor A ratio of the number of fuel assemblies loaded on a core to the number of control rod drive mechanisms is 3 or more. The fuel assembly itself contains mixed oxides of a low enrichment concentration uranium oxide containing 3 to 8 wt % in the average enrichment conc... | 03/25/2008 |
| 7239683 | Fuel assembly nozzleless handling tool and method A device and method to move a fuel assembly of a nuclear reactor, wherein the device eliminates the potential for dropping the fuel assembly due to stress corrosion cracking of the upper guide thimble sleeves that attach the top nozzle to guide thimbles. ... | 07/03/2007 |
| 6744842 | Fuel assembly for a pressurized-water reactor A fuel assembly for a pressurized-water reactor includes fuel rods held in cells of spacers, control rod guide tubes, and a headpiece and a foot piece, by which it is fixed to upper and lower core grids, respectively. A spacer having a first part, which lies on a ra... | 06/01/2004 |
| 6327324 | Nuclear fuel assembly A fuel assembly for a boiling water reactor comprising a plurality of fuel units (3a, 3b, 3c, 3d), stacked on top of each other, each one comprising a top tie plate (5), a bottom tie plate (6) and a plurality of fuel rods (4a, 4b, 4c) arranged between the... | 12/04/2001 |
| 5555281 | Triangular lattice for LWR square fuel assemblies Triangular lattice for LWR square fuel assemblies.... | 09/10/1996 |
| 5465282 | Fuel assembly for a nuclear reactor A fuel assembly for a nuclear reactor, comprising a number of parallel fuel rods which are retained by means of spacer grids, arranged along the fuel rods, as well as guide thimbles wherein the guide thimbles, are fixed to the spacer grids. The guide thim... | 11/07/1995 |
| 5309493 | Fuel rod for nuclear reactor A fuel rod for nuclear reactors which contains UO2 or a mixed-oxide (MOX) of UO2 and PuO2 as a nuclear fuel and a combustible reactivity control material e.g., Gd2 O3. A plurality of hollow UO2 | 05/03/1994 |
| 5219519 | Increased fuel column height for boiling water reactor fuel rods A fuel bundle is disclosed in which interspersed part length fuel rods define between the end of the fuel rods and the upper tie plate void regions which are not otherwise occupied. Full length fuel rods adjacent to these regions are provided with an expa... | 06/15/1993 |
| 5096660 | Fuel assembly for a boiling reactor A fuel assembly in the form of an elongated channel having several corners is connected to a coolant intended to flow through the channel. A bundle of similarly elongated fuel rods, retained by a plurality of spacers, is arranged in the channel, and arran... | 03/17/1992 |
| 4963317 | High loading uranium fuel plate Two embodiments of a high uranium fuel plate are disclosed which contain a meat comprising structured uranium compound confined between a pair of diffusion bonded ductile metal cladding plates uniformly covering the meat, the meat having a uniform high fu... | 10/16/1990 |
| 4938918 | Element immersed in coolant of nuclear reactor The zirconium cladding of a coolant-displacement rod of a nuclear reactor is precollapsed in the zirconium oxide stack of pellets which supports the cladding. Current is conducted through the cladding in an atmosphere at reduced pressure containing residu... | 07/03/1990 |
| 4919884 | Modular nuclear fuel element, modular capsule for such element and method for such element and method for manufacturing such modular capsule The fuel element comprises a plurality of modular capsules (5) arranged in sequence axially within a sheath (2). Each of the capsules (5) comprises a tubular case (10) closed at both ends by a porous element (13, 14) and enclosing a stack of pellets (11) ... | 04/24/1990 |
| 4728487 | Standardized reduced length burnable absorber rods for a nuclear reactor A cluster of standardized reduced length burnable absorber rods include a plurality of middle rod sections having a multiplicity of different axial lengths and containing burnable absorber material in sealed chambers therein, a plurality of upper end spac... | 03/01/1988 |
| 4725401 | Element immersed in coolant of nuclear reactor A coolant-displacement rod for a nuclear reactor including a stack of zirconium-oxide pellets in cladding of ZIRCALOY-4 alloy. The outer surfaces of certain of the pellets spaced at intervals along the stack are depressed. The cladding grows permanently w... | 02/16/1988 |
| 4687605 | Manufacturing automation system for nuclear fuel rod production An automated fuel rod production system includes a radioactive powder fabrication and processing stage, a pellet fabrication stage, a pellet processing stage, a tube preparation stage and a fuel rod fabrication and inspection stage, all of which provide a... | 08/18/1987 |
| 4282064 | Nuclear fuel element A nuclear fuel element is provided which comprises a cladding tube having end plugs for sealing ends of the cladding tube and a multiplicity of fuel pellets stacked within the cladding tube. Each of the fuel pellets has a substantially cylindrical externa... | 08/04/1981 |
| 4175002 | Nuclear fuel pellet with oppositely bottomed holes A nuclear fuel pellet is made of a sintered, ceramic nuclear fuel mass and has a cylindrical configuration with a pair of opposite bottomed holes centrally provided one at each end. The bottomed holes are convergent toward their bottoms and each have a U-... | 11/20/1979 |
| 4146431 | Nuclear fuel cladding system Pencil type nuclear fuel elements having a metallic, locally flexible cladding containing discrete fuel pellets in end-to-end packed relation to form a stack of fuel pellets, wherein the pellets are provided with individual expansion provision, to substan... | 03/27/1979 |
| 4120752 | Mixed oxide fuel pellet for fuel rod of nuclear reactor core A fuel pellet comprised of an inner cylindrical part provided with a mixture of uranium oxide and plutonium oxide, and an outer annular part integral with the inner part and containing uranium oxide free of plutonium oxide. The fuel pellet is adapted to b... | 10/17/1978 |
| 3949027 | Manufacturing process for improved nuclear fuel tablets Process for manufacturing improved nuclear fuel pellets, including compacting ceramic powder in the Compaction chamber of a pelletizing machine with only the lower punch moving on compaction, wherein the walls of the compaction chamber are widened on at l... | 04/06/1976 |
| 3932217 | Method and device for the passive protection of a nuclear reactor Conventional fuel elements within the core of a nuclear reactor and especially a fast reactor are at least partly replaced by "safety elements" each formed by a stack of fissile fuel pellets enclosed in a can. Each pellet is provided with a central orific... | 01/13/1976 |
