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| Number | Title | Issue Date |
| 4158604 | Boiler systems for nuclear powered reactors Power generating plant which comprises a heat source, at least one main steam turbine and at least one main boiler heated by heat from the heat source and providing the steam to drive the turbine, comprises additionally at least one further steam turbine,... | 06/19/1979 |
| 4050987 | Rotating plug bearing and seal A bearing and seal structure for nuclear reactors utilizing rotating plugs above the nuclear reactor vessel. The structure permits lubrication of bearings and seals of the rotating plugs without risk of the lubricant draining into the reactor vessel below... | 09/27/1977 |
| 4042521 | Fire extinguishing composition A dry fire extinguishing composition particularly useful in extinguishing Class B fires on cooking ranges and the like; comprising, between about 50% and 95% of an alkali metal bicarbonate, such as, sodium bicarbonate or an alkaline earth metal carbonate,... | 08/16/1977 |
| 4039379 | Mixing vane grid spacer An improved mixing vane grid spacer having enhanced flow mixing capability by virtue of mixing vanes being positioned at welded intersecting joints of the spacer wherein each mixing vane has an opening or window formed therein substantially directly over ... | 08/02/1977 |
| 4035232 | Closure system A gas-cooled nuclear reactor system is described having a pressure vessel with a penetration therein for accommodating a heat exchanger. A closure system is used in which a restrainer ring is positioned between a tube sheet and the interior of the pressur... | 07/12/1977 |
| 4022661 | Fuel rod support means Means are provided to minimize crud buildup at the interface between the tie plate and end plug in a nuclear fuel bundle. The means may comprise serrations in the end plug and/or serrations in the surface of the tie plate which serrations provide a flow o... | 05/10/1977 |
| 4022656 | Suspended nuclear reactor containments with reduced thermal stress A containment for a nuclear reactor has a primary vessel for containing the reactor core and liquid coolant. The primary vessel is suspended by its rim from the roof of the containment structure. To reduce thermal stress at the suspension joint, cooling m... | 05/10/1977 |
| 4022658 | Thermal shield system for the primary vessel suspension strake of a fast reactor A heat-insulating structure is placed within an annular space located between the primary vessel suspension strake of a fast reactor and the cylindrical shell of a top concrete closure slab from which the primary vessel is suspended. The heat-insulating s... | 05/10/1977 |
| 4022660 | Coated particles A nuclear fuel particle wherein a core, up to about 250 microns in diameter, of a normally solid fissionable material is completely encased in a shell having at least two concentric layers. A yielding of carbonaceous material about 5 to about 50 microns t... | 05/10/1977 |
| 4022657 | Device for the thermal protection of a fast reactor vessel A thermal protection device which prevents the formation of neutral gas thermosiphons within the annular space formed between a reactor vessel wall and the shell of a top closure structure from which the vessel wall is suspended essentially consists of on... | 05/10/1977 |
| 4021298 | Conversion of coal into hydrocarbons Hydrocarbons are formed of coal and water. The water is converted or dissociated separately into hydrogen and oxygen in a first chemical reactor by thermochemical and/or electrolytic processing. The resulting hydrogen is then reacted with the coal in a se... | 05/03/1977 |
| 4021299 | Method of working a combined nuclear-fossil fuel cycle and device for using same A method of working a combined nuclear-fossil fuel cycle consisting in generating steam in a nuclear reactor, admitting fossil fuel into a regenerator operating with oxygen and effecting the gasification of the fuel therein and raising the heat potential ... | 05/03/1977 |
| 4017357 | Nuclear core inlet flow arrangement A nuclear core arrangement for admitting reactor coolant into nuclear reactor fuel assemblies. Inlet nozzles having main and alternate inlets are attached to the fuel assemblies. Each of the nozzle inlets receive reactor coolant from a separate flow plenu... | 04/12/1977 |
| 4017358 | Boron thermal regeneration system An ion exchanger which allows flow in both directions along a selected flow-path. A separator plate divides the exchanger tank into two chambers each of which has a flow-conduit so that flow may enter or leave from either chamber while prohibiting the res... | 04/12/1977 |
| 4014856 | Liquid electrophotographic developers A liquid toner composition comprising carrier liquid and toner particles for the development of electrostatic charge patterns is described wherein the said liquid comprises (1) a bivalent or trivalent metal salt of an oxyacid derived from phosphorus conta... | 03/29/1977 |
| 4011132 | Nuclear reactor pressure vessel for nuclear reactors with plastically deformable spacers Cylindrical pressure vessel structure for nuclear reactors comprises a steel pressure vessel adapted to receive therein a pressurizing medium, a concrete enclosure at least partly producible in situ, the steel pressure vessel being mounted within the conc... | 03/08/1977 |
| 4011134 | Pressurized-coolant reactor fuel rod A pressurized-coolant reactor fuel rod comprises a cladding tube having ends closed gas-tightly, the tube internally defining a fuel-containing space and in which nuclear fuel pellets are positioned. The tube contains a fission gas plenum chamber formed b... | 03/08/1977 |
| 4010069 | Nuclear reactor fuel rod A nuclear reactor fuel rod is disclosed in which fission gases from the nuclear reaction are retained for a short time period to permit decay of the radioactivity present in the gases and then permit the removal of the gases from the rod. To accomplish th... | 03/01/1977 |
| 4007085 | Nuclear reactor fuel elements A nuclear reactor fuel element has within its protective sheath an insert whereby it may be uniquely identified. The insert bears an array of markings at spaced positions to produce a series of clock pulses on presentation of the insert to a detector resp... | 02/08/1977 |
| 4006055 | Resilient tension device in nuclear reactors A nuclear power reactor has an active zone in which a plurality of fuel elements containing a large number of fuel rods are held between two grid plates. A tension device is disclosed which is provided for each fuel element and holds the same between the ... | 02/01/1977 |
| 4003786 | Thermal energy storage and utilization system The power output from a nuclear power plant or fossil fuel power plant operating under constant reactor (or furnace) and boiler conditions is varied by regulating the rate of turbine extraction steam and primary high pressure steam used to heat boiler fee... | 01/18/1977 |
| 4003788 | Nuclear fuel elements sealed by electric welding A nuclear-fuel assembly has an end plug and is sealed except for a small diameter axial bore in the plug. A welding electrode of the same material as the plug has an end ground to a point. The tapered end is then inserted into the bore. Before the bore is... | 01/18/1977 |
| 4003787 | Device for supporting a fuel-pin cluster within a nuclear reactor fuel assembly wrapper A supporting member for an array of parallel rails each carrying one row of slidably mounted pins of a fuel clister is placed coaxially at the lower end of a vertical fuel assembly wrapper. The ends of the rails are engaged in vertical slots formed in the... | 01/18/1977 |
| 4000037 | Reactor-turbine control for low steam pressure operation in a pressurized water reactor A control system for a pressurized water reactor power plant. The control system comprises temperature sensing means having flow interruption means connected thereto. The temperature sensing means monitors the temperature levels within the reactor element... | 12/28/1976 |
| 4000039 | Fuel elements for high temperature reactors having special suitability for reuse of the structural graphite There are prepared fuel elements for high temperature reactors from which the fuel zone can be removed from the structural graphite after the burnup of the fissile material has taken place so that the fuel element can be filled with new fuel and again pla... | 12/28/1976 |
| 3998695 | Energy storage by means of low vapor pressure organic heat retention materials kept at atmospheric pressure The power output from a nuclear power plant or fossil fuel power plant operating under constant reactor (or furnace) and boiler conditions is varied by increasing the turbine extraction steam during low power demand periods for the purpose of using the st... | 12/21/1976 |
| 3998693 | Thermal margin control A monitoring system for providing warning and/or trip signals indicative of the approach of the operating conditions of a nuclear steam supply system to a departure from nucleate boiling or coolant temperature saturation. The invention is characterized by... | 12/21/1976 |
| 3997394 | Fuel assembly supporting structure For use in forming the core of a pressurized-water reactor, a fuel assembly supporting structure for holding a bundle of interspaced fuel rods, is formed by interspaced end pieces having holes in which the end portions of control rod guide tubes are inser... | 12/14/1976 |
| 3996100 | Vented nuclear fuel element The vented nuclear fuel element comprises a cladding tube containing nuclear fuel therein and a device disposed in the upper portion of the cladding tube for venting gaseous fission products released from the nuclear fuel. The venting device comprises a p... | 12/07/1976 |
| 3996319 | Process for the production of pressed block fuel elements of high power for gas cooled high temperature reactor Molded or pressed block fuel elements of high power for gas cooled high temperatures are produced by molding in steel tools using outer dies or bars and punches arranged to be freely moveable in the axial direction and moving said moveable dies or bars an... | 12/07/1976 |
| 3996101 | Device for supporting a fuel pin cluster within a nuclear reactor fuel assembly wrapper A supporting member for an array of parallel rails each carrying one row of slidably mounted pins of a fuel cluster is placed coaxially at the lower end of a vertical fuel assembly wrapper. Each parallel rail is provided at each end with a downward extens... | 12/07/1976 |
| 3994779 | Nuclear reactor fuel rod spacer A spacer for positioning at least the four corner fuel rods in a tubular flow channel of a nuclear reactor is disclosed. The spacer comprises a support member having four side bands interconnected by four corner bands to form a unitary structure. Each of ... | 11/30/1976 |
| 3993540 | Helium cooled nuclear reactors A closed loop coolant circuit for a helium cooled high temperature reactor. The circuit has a conventional purification by-pass loop including an oxidizing bed for impurities and an absorption bed for the oxidized impurities. A recycle pipe line is provid... | 11/23/1976 |
| 3993453 | Getter for nuclear fuel elements A nuclear fuel element for use in the core of a nuclear reactor is disclosed and has disposed therein an improved getter capable of gettering reactive gases including a source of hydrogen. The getter comprises a composite with a substrate having thereon a... | 11/23/1976 |
| 3992494 | Method of making an oxide fuel compact A method of making an oxide nuclear fuel compact of predominantly open porosity having a density between about 88 and 96 percent of theoretical density. A green compact is formed from a mixture of particulate nuclear fuel oxide and fibrous material and th... | 11/16/1976 |
| 3990941 | Nuclear reactor pressure vessel installation A nuclear reactor pressure vessel is installed in the pit of a biological shield forming a concrete wall surrounding the vessel and which defines an annular space around the vessel. A heat insulating layer of concrete surrounds the vessel within the annul... | 11/09/1976 |
| 3990874 | Process of manufacturing a fiber bundle In the disclosed process, a multiplicity of like fibers of fusible material are arranged in a bundle which is brought to the drawing temperature. The bundle is drawn to reduce its cross sectional area while retaining its cross sectional configuration. Dur... | 11/09/1976 |
| 3990942 | Removable auxiliary lid for handling the fuel elements of a nuclear reactor core The auxiliary lid permits temporary closure of the reactor core shroud during charge/discharge operations after removal of the closure head of a pressurized water or boiling water reactor. The auxiliary lid has an outer closure plug mounted for rotational... | 11/09/1976 |
| 3989449 | Dyestuff compositions A dyestuff composition comprising a dyestuff of the general formula (I): ##SPC1## in which R and R1 are selected from the group consisting of identical and different hydrogen, lower alkyl, lower alkoxy, acyl, acyloxy and halogen radicals; And a... | 11/02/1976 |
| 3986925 | Power plant with nuclear reactor and MHD-system Power plant with a plurality of similarly constructed, elongated units, each unit including a closed working fluid loop for MHD-conversion. The electrical outputs are connected in parallel on a common bus. Prime heater is a nuclear reactor distributed amo... | 10/19/1976 |
