Bizarre Patents
Mountable Printable Placard With Headband
A resilient headband in a shape for being mounted on the head of the user. The headband is equipped with a longitudinal slotted member for holding a placard.
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| Number | Title | Issue Date |
| 7424085 | Cluster for adjusting a nuclear reactor core reactivity, absorber rod of the cluster and method for protecting the absorber rod against wear A control cluster for a pressurized water nuclear reactor comprising a bundle of neutron-absorbing rods each of which comprises a metal tube called cladding which is sealed off by a top end plug at its top end and by a bottom end plug at its bottom end and has a sup... | 09/09/2008 |
| 7412021 | Advanced gray rod control assembly An advanced gray rod control assembly (GRCA) is for a nuclear reactor. The reactor has a plurality of fuel assemblies each including numerous elongated fuel rods supported in an organized array by substantially transverse support grids, and a plurality of guide thim... | 08/12/2008 |
| 7286626 | Neutron absorbing coating for nuclear criticality control A neutron absorbing coating for use on a substrate, and which provides nuclear criticality control is described and which includes a nickel, chromium, molybdenum, and gadolinium alloy having less than about 5% boron, by weight. ... | 10/23/2007 |
| 7139352 | Reactivity control rod for core A reactivity control rod adapted to be used in a reactor core of a fast reactor and disposed at a substantially central portion of the reactor core for controlling a reactivity therein. The reactivity control rod includes a wrapper tube surrounded by a plurality of ... | 11/21/2006 |
| 6721382 | Absorber member and control rod An absorber body arranged to absorb radiation in a nuclear energy arrangement. The absorber body comprises more than one area with a locally reduced thickness. ... | 04/13/2004 |
| 6654438 | Control rod for boiling water reactor, unit for control rod and production method of control rod A control rod for a BWR according to the present invention comprises a first unit composed of a tie rod, a handle mounted on an axially upper portion of the tie rod and a lower support member or falling speed limiter mounted on a axially lower portion of ... | 11/25/2003 |
| 6442227 | Sleeve assembly for nuclear fuel racks A sleeve assembly for refurbishing a fuel rack having cells in which fresh or spent nuclear fuel assemblies may be stored, in which the cells have elongate rack walls extending from a rack base plate and the rack base plate has flow holes communicating wi... | 08/27/2002 |
| 6340536 | Zirconium and niobium alloy comprising erbium, preparation method and component containing said alloy An alloy of zirconium and niobium that includes erbium as a consumable neutron poison, its method of preparation and a component comprising said alloy are provided. This invention relates to an alloy of zirconium and niobium that includes erbium as a cons... | 01/22/2002 |
| 6226340 | Hermaphroditic absorber loading for higher worth control rods A hermaphroditic absorber exploits the inherent spatial change in the neutron spectrum within a lumped poison mass in a thermal reactor neutron flux field. The hermaphroditic absorber (poison mass) incorporates two types of absorbers, the first being a st... | 05/01/2001 |
| 5820818 | Stainless steel having excellent thermal neutron absorption ability The ferritic stainless steel of the present invention contain the following main chemical elements, in which a relationship between B and Gd, preferably, satisfies the following equation (1) on the weight % basis: ____________________________________... | 10/13/1998 |
| 5700962 | Metal matrix compositions for neutron shielding applications A neutron shield is formed of a boron carbide-metal matrix composite having a density ranging from 2.5 to 2.8 g/cm3 and a composition ranging from approximately 10 to 60 weight % of boron carbide and 40 to 90 weight % of metal matrix. The metal... | 12/23/1997 |
| 5684847 | Silver-based alloy containing indium and cadmium for the production of neutron-absorber components, and use The alloy contains, expressed in atomic percentages, 9 to 12% of indium and 4 to 5.35% of cadmium, the remainder consisting of silver with the exception of unavoidable impurities in very low quantities. The alloy preferably contains 9 to 10% of indium and... | 11/04/1997 |
| 5610959 | Hafnium doped replacement rod for nuclear fuel reconstitution A replacement rod for insertion into a nuclear fuel assembly to replace a fuel rod containing a neutron absorbing, fissile fuel, includes Hafnium sufficient to substantially replace the neutron absorption capacity of the fuel rod. The replacement rod also... | 03/11/1997 |
| 5503893 | Ultra-high performance carbon composites Method of fabricating a multi-ply carbon fibre fabric, preform or composite material from a layer of unidirectionally aligned carbon fibres of ultra-high modulus and a layer of low modulus carbon fibre comprising the steps of: arranging in superimposed re... | 04/02/1996 |
| 5479463 | Neutron absorbing apparatus A neutron absorbing apparatus which includes two adjacent neutron absorbing plates and a mounting assembly with latching means configured to be easily secured to fuel assemblies while the fuel assemblies remain under water in a fuel storage rack, thereby ... | 12/26/1995 |
| 5416813 | Moderator rod containing burnable poison and fuel assembly utilizing same A moderator rod provided with a burnable poison and disposed in a fuel assembly of a reactor core comprises an outer tube, an inner tube disposed in the outer tube, the outer and inner tubes constituting a double tube structure between which an annular se... | 05/16/1995 |
| 5386439 | Spectral shift nuclear reactor with improved efficiency During operation of a light water moderated and cooled nuclear reactor, rods varying the neutron energy spectrum are introduced into the core of the reactor in the course of a first phase of the cycle in order to reduce the ratio of the volume of moderato... | 01/31/1995 |
| 5330589 | Hafnium alloys as neutron absorbers A hafnium alloy consisting essentially of hafnium and containing Sn by 0.1-1.5 weight %, O by 0.03-0.2 weight %, Fe by 0.01-0.15 weight %, Zr by 0.02-2.0 weight %, and (1) Cr by 0.01-0.15 weight %, and Ni by less than 0.10 weight %, (2) Cr by 0.01-0.15 we... | 07/19/1994 |
| 5316597 | A nuclear reactor comprising a reactor vessel and structural members made of an austenitic stainless steel having superior resistance to irradiation-induced segregation A nuclear reactor having structural members made of austenitic stainless steel which is corrosion-resistant in an environment of neutron irradiation, and can suppress stress corrosion cracking and embrittlement. At least one additive selected from the gro... | 05/31/1994 |
| 5276718 | Control blade for nuclear reactor In a field of commercial nuclear reactors, a control blade, which is inserted into and withdrawn from the core of a nuclear reactor so as to start/shut-down the operation thereof and to control the reactor power, must have soundness, high reactivity and l... | 01/04/1994 |
| 5267284 | Zirconium alloy containing isotopic erbium A zirconium alloy absorber material is described which can be used in structural components in light water nuclear reactors. The zirconium alloy absorber material includes a zirconium alloy material, such as Zircaloy-2 or Zircaloy-4, which has been modifi... | 11/30/1993 |
| 5267290 | Zirconium alloy absorber layer A burnable-absorber-containing zirconium alloy is described for application to the inside surface of cladding tubes for light water nuclear reactors. The alloy comprises naturally occurring erbium in a range from a measurable amount up to about 20 wt. % o... | 11/30/1993 |
| 5250231 | Nuclear fuel with isotopically depleted burnable absorber By using AVLIS or other methods capable of providing a depleted isotopic mixture, troublesome isotopes such as Gd154, Gd156 and Er166 are selectively removed from naturally occurring isotopic mixtures, while avoiding the a... | 10/05/1993 |
| 5242631 | Method for coating nuclear fuel pellets A method for coating a nuclear fuel pellet is provided in which a liquid sol is formed containing the makings of a rare earth metal oxide. The liquid sol is applied to the exterior surface of the nuclear fuel pellet and the pellet is baked to form a solid... | 09/07/1993 |
| 5242622 | Process for the production of a neutron absorbing pellet, the pellet obtained and the use thereof The invention relates to a process for the production of a neutron absorbing pellet for use in a nuclear reactor control device, comprising the following stages: a) compactable products are prepared incorporating as % by weight electrolytic crystals or ch... | 09/07/1993 |
| 5241571 | Corrosion resistant zirconium alloy absorber material A burnable absorber controls axial power peaking or moderator temperature coefficient while additional elements are added to improve strength and/or corrosion resistance in a zirconium alloy containing erbium in a range of from about 0.05 to 2 wt. % selec... | 08/31/1993 |
| 5156804 | High neutron-absorbing refractory compositions of matter and methods for their manufacture Neutron absorbing refractory B4 C--Gd and Gd2 O3 --Gd cermets, B4 C--Gd and Gd2 O3 --Gd metal-matrix composites, and B4 C--Gd2 O3 ceramic-ceramic composites can ... | 10/20/1992 |
| 5136619 | Thermal breeder fuel enrichment zoning A method and apparatus for improving the performance of a thermal breeder reactor having regions of higher than average moderator concentration are disclosed. The fuel modules of the reactor core contain at least two different types of fuel elements, a hi... | 08/04/1992 |
| 5116569 | Austenitic steel excellent in resistance to neutron irradiation embrittlement and members made of the steel An austenitic steel excellent in resistance to neutron irradiation embrittlement which contains, by weight, not more than 0.03% carbon, not more than 1% silicon, 5 to 25% manganese, 15 to 26% chromium, and 10 to 20% nickel, the ratio of atomic volume of c... | 05/26/1992 |
| 5075075 | Nuclear reactor core having nuclear fuel and composite burnable absorber arranged for power peaking and moderator temperature coefficient control A nuclear reactor core has a first group of fuel rods containing fissionable material and no burnable absorber, and a second group of fuel rods containing fissionable material and two burnable absorber materials. The groups of fuel rods are arranged in th... | 12/24/1991 |
| 5034185 | Control blade for nuclear reactor A control blade for a nuclear reactor having inserted upper end structural members and inserted lower end structural members connected to a plurality of wings each in the form of a generally rectangular plate having an longitudinal axis extending in the l... | 07/23/1991 |
| 4992225 | Water corrosion-resistant ceramic oxide body A lanthanide oxide selected from the group consisting of dysprosium oxide, erbium oxide, europium oxide, gadolium oxide and samarium oxide is formed into a compact and sintered to produce a body useful as a control rod material in a water cooled nuclear r... | 02/12/1991 |
| 4891080 | Workable boron-containing stainless steel alloy article, a mechanically worked article and process for making thereof A workable, boron-containing, stainless steel alloy and an article formed therefrom are disclosed together with a process for manufacturing same. The alloy consists essentially of, in weight percent, about ______________________________________ ... | 01/02/1990 |
| 4880597 | Alloy coated fuel cladding A fuel element for a nuclear reactor having a zirconium tin alloy cladding tube, with a thin coating of enriched boron-containing alloy burnable poison, such as nickel-thallium-boron deposited from a reducing agent by an electroless plating process.... | 11/14/1989 |
| 4879086 | Neutron economic reactivity control system for light water reactors A neutron reactivity control system for a LWBR incorporating a stationary seed-blanket core arrangement. The core arrangement includes a plurality of contiguous hexagonal shaped regions. Each region has a central and a peripheral blanket area juxaposition... | 11/07/1989 |
| 4865769 | Radiation shielding material and process for preparing the same A radiation shielding material for intercepting not only γ rays and x rays but also neutrons, comprising sulfur, iron oxide powder, lead oxide powder, gadolinium oxide powder and hydrogen-occluding alloy powder; and a process for preparing the radiation ... | 09/12/1989 |
| 4826630 | Burnable neutron absorbers Annular pellets of burnable poison specifically boron carbide, B4 C, in a matrix of a refractory material, specifically aluminum oxide, Al2 O3, are produced. The pellets are of small wall thickness. Powders of the Al2... | 05/02/1989 |
| 4826647 | Spectral shift reactor A mechanical spectral shift reactor comprises apparatus for inserting and withdrawing water displacer elements having differing neutron absorbing capabilities for selectively changing the water-moderator volume in the core thereby changing the reactivity ... | 05/02/1989 |
| 4818477 | PCI resistant fuel and method and apparatus for controlling reactivity in a reactor core A nuclear fuel assembly comprising a plurality of fuel rods, each fuel rod comprising a cladding tube closed at both ends and filled with cylindrical nuclear fuel pellets such as sintered uranium dioxide or uranium plutonium dioxide. All or nearly all of ... | 04/04/1989 |
| 4766482 | Semiconductor device and method of making the same A semiconductor device having a layer of semiconductor material disposed on an insulating substrate is disclosed. A means is provided within the insulating substrate for minimizing the collection of radiation-induced charge carriers at the interface betwe... | 08/23/1988 |
