US Patent Class 976
NUCLEAR TECHNOLOGY
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| Electronic File Wrappers | Electronic Patent Documents | Paper Patent Documents | Current as of: June, 1999
| and Services |
| DF | CLASS NOTES | |
| DIG 1 | DD | ALLEGED CONTROLLED FUSION REACTORS (G21B-1/00) ** (uncontrolled reactors DIG. 423; arrangements for heating or confining plasma H05H-1/02) |
| DIG 2 | DD | .~ Combined fission-fusion reactors [G21B-1/00B] *** (see also DIG. 5+) |
| DIG 3 | DD | .~ Inertial confinement fusion reactor [G21B-1/00C] *** (plasma produced by laser H05H-1/22B; by particle beam H05H-1/22C) |
| DIG 4 | DD | .~ Using a beam of particles some of which react with other particles [G21B-1/02] |
| DIG 5 | DD | NUCLEAR REACTORS [G21C-1/00] *** (fusion reactors H05H-1/00; nuclear explosives DIG. 423; analogue computers therefor G06G-7/54) |
| DIG 6 | DD | .~ Integral reactors (i.e., the reactor core and the heat exchanger are placed in one vessel; the reactor vessel and the heat exchanger form an integral construction) [G21C-1/00B] |
| DIG 7 | DD | .~.~ Where the prime mover is also placed in the vessel [G21C-1/00B2] |
| DIG 8 | DD | .~.~ Where the heat exchanger is disposed above the core [G21C-1/00B3] |
| DIG 9 | DD | .~.~ Where the heat exchanger is disposed beneath the core [G21C-1/00B4] |
| DIG 10 | DD | .~.~ Where the heat exchanger is disposed beside the core [G21C-1/00B5] |
| DIG 11 | DD | .~ Fast fission reactors (i.e., reactors not using a moderator; metal cooled reactors; fast breeders) [G21C-1/02] |
| DIG 12 | DD | .~.~ Characterized by the concept and properties of the core [G21C-1/02B] |
| DIG 13 | DD | .~.~.~ Where the core is divided into zones with fuel and zones with breeding material [G21C-1/02B2] |
| DIG 14 | DD | .~.~ Cooled by a not essentially pressurized coolant (e.g., tub type) [G21C-1/02D] *** (cooling arrangements DIG. 187+) |
| DIG 15 | DD | .~.~ Cooled by a pressurized coolant [G21C-1/02F] *** (cooling arrangements DIG. 187+) |
| DIG 16 | DD | .~ Thermal reactors; Epithermal reactors [G21C-1/04] |
| DIG 17 | DD | .~.~ Heterogeneous reactors (i.e., in which the fuel and moderator are separated) [G21C-1/06] |
| DIG 18 | DD | .~.~.~ Pebble-bed reactors; Reactors with granular fuel [G21C-1/06B] |
| DIG 19 | DD | .~.~.~ Moderator being highly pressurized (e.g., boiling water reactor; integral super-heat reactor; pressurized water reactor) [G21C-1/08] *** (DIG. 30 takes precedence) |
| DIG 20 | DD | .~.~.~.~ Pressure regulating arrangements; "pressurizers" [G21C-1/08B] |
| DIG 21 | DD | .~.~.~.~ Reactors where the coolant is overheated [G21C-1/08D] |
| DIG 22 | DD | .~.~.~.~ Boiling water reactors [G21C-1/08E] |
| DIG 23 | DD | .~.~.~.~ Pressurized water reactors [G21C-1/08F] |
| DIG 24 | DD | .~.~.~.~ Moderator and coolant being different or separated [G21C-1/10] |
| DIG 25 | DD | .~.~.~.~.~ Moderator being solid (e.g., Magnox reactor, gas-graphite reactor [G21C-1/12] |
| DIG 26 | DD | .~.~.~ Moderator being substantially not pressurized (e.g., swimming-pool reactor [G21C-1/14] *** (DIG. 30 takes precedence) |
| DIG 27 | DD | .~.~.~.~ Moderator and coolant being different or separated (e.g., sodium-graphite reactor, sodium-heavy water reactor, organic coolant-heavy water reactor) [G21C-1/16] |
| DIG 28 | DD | .~.~.~.~.~ Coolant being pressurized [G21C-1/18] |
| DIG 29 | DD | .~.~.~.~.~.~ Moderator being liquid (e.g., pressure-tube reactor, also the construction of the pressure-tubes) [G21C-1/20] |
| DIG 30 | DD | .~.~.~ Using fluid or fluent fuel [G21C-1/22] *** (With granular fuel DIG. 18) |
| DIG 31 | DD | .~.~ Homogeneous reactors (i.e., in which the fuel and moderator present an effectively homogeneous medium to the neutrons) [G21C-1/24] |
| DIG 32 | DD | .~.~.~ Single-region reactors [G21C-1/26] |
| DIG 33 | DD | .~.~.~ Two-region reactors [G21C-1/28] |
| DIG 34 | DD | .~ Subcritical reactors; Experimental reactors with exception of swimming-pool reactors, zero-energy reactors [G21C-1/30] |
| DIG 35 | DD | .~.~ Experimental and irradiation arrangements inside the reactor [G21C-1/30B] *** (irradiation loops DIG. 36; material testing by neutrons G01N-23/00B) |
| DIG 36 | DD | .~.~ Irradiation loops [G21C-1/30D] |
| DIG 37 | DD | REACTOR FUEL ELEMENTS AND THEIR ASSEMBLIES; SELECTION OF SUBSTANCES FOR USE AS REACTOR FUEL ELEMENTS [G21C-3/00] |
| DIG 38 | DD | .~ Fuel elements [G21C-3/02] *** (manufacturing DIG. 283) |
| DIG 39 | DD | .~.~ Constructional details [G21C-3/04] |
| DIG 40 | DD | .~.~.~ Means for removal of gases from fuel elements [G21C-3/04B] |
| DIG 41 | DD | .~.~.~ Fuel elements comprising casings with a mass of granular fuel with coolant passages through them [G21C-3/04C] |
| DIG 42 | DD | .~.~.~ Fuel elements with porous or capillary structure [G21C-3/04D] |
| DIG 43 | DD | .~.~.~ Casings; Jackets; Jacket materials [G21C-3/06] |
| DIG 44 | DD | .~.~.~.~ Jacket materials (e.g., alloys) [G21C-3/06B] |
| DIG 45 | DD | .~.~.~.~ Provided with external means to promote heat-transfer (e.g., fins, baffles) [G21C-3/08] |
| DIG 46 | DD | .~.~.~.~ End closures; means for tight mounting therefor [G21C-3/10] |
| DIG 47 | DD | .~.~.~.~.~ Flattened end-closures [G21C-3/10B] |
| DIG 48 | DD | .~.~.~.~ Means forming part of the element for locating it within the reactor core [G21C-3/12] *** (means not forming part of the element DIG. 102) |
| DIG 49 | DD | .~.~.~.~ Means forming part of the element for inserting it into, or removing it from, the core; Means for coupling adjacent elements (e.g., to form a stringer) [G21C-3/14] |
| DIG 50 | DD | .~.~.~ Details of the construction within the casing [G21C-3/16] |
| DIG 51 | DD | .~.~.~.~ Means for storage or immobilization of gases in fuel elements [G21C-3/16B] |
| DIG 52 | DD | .~.~.~.~ Internal spacers; Other nonactive material within the casings (e.g., compensating for expansion of fuel rod; compensating for excess reactivity) [G21C-3/18] *** (interlayers DIG. 53) |
| DIG 53 | DD | .~.~.~.~ With coating on fuel or on inside of casing; with nonactive interlayer between casing and active material; with multiple casings or multiple active layers [G21C-3/20] |
| DIG 54 | DD | .~.~ Elements with fissile or breeder material in contact with coolant [G21C-3/22] |
| DIG 55 | DD | .~.~ Elements with fissile or breeder material in fluid form within a nonactive casing [G21C-3/24] |
| DIG 56 | DD | .~.~ Elements with fissile or breeder material in powder form within a nonactive casing [G21C-3/26] *** (DIG. 57 takes precedence) |
| DIG 57 | DD | .~.~ Elements with fissile or breeder material in solid form within a nonactive casing [G21C-3/28] |
| DIG 58 | DD | .~ Assemblies of number of fuel elements in the form of a rigid unit [G21C-3/30] |
| DIG 59 | DD | .~.~ Bundles of parallel pin-, rod-, or tube-shaped fuel elements [G21C-3/32] |
| DIG 60 | DD | .~.~.~ Means to influence the coolant flow through or around the assembly [G21C-3/32B] *** (DIG. 246 takes precedence) |
| DIG 61 | DD | .~.~.~ Coats and envelope surrounding the assembly [G21C-3/32C] |
| DIG 62 | DD | .~.~.~ Made of moderator-material [G21C-3/32D] |
| DIG 63 | DD | .~.~.~ Comprising fuel-elements of various compositions; comprising other pin-, rod-, or tube-like forms [G21C-3/32G] *** (elements influencing the coolant flow DIG. 60) |
| DIG 64 | DD | .~.~.~.~ Special arrangements of elements in the assembly-lattice (e.g., fissile rods, fertile rods, water rods, poison rods, dummy-rods) [G21C-3/32G2] |
| DIG 65 | DD | .~.~.~ Supporting or hanging the elements in the assembly [G21C-3/32H] *** (Spacer grids DIG. 71); Means forming part of the assembly for inserting it into, or removing it from, the core; Means for coupling adjacent assemblies (means forming part of the element for inserting it into, or removing it from, the core; or means for coupling adjacent elements DIG. 49) |
| DIG 66 | DD | .~.~.~.~ Supports for spacer grids [G21C-3/32H2] |
| DIG 67 | DD | .~.~.~ Means for the storage or removal of fission gases [G21C-3/32K] *** (means for the storage of fission gases in the elements DIG. 50; means for the removal of fission gases from elements DIG. 39+) |
| DIG 68 | DD | .~.~.~ Assembling the bundle; Exchange of elements in the bundle [G21C-3/32L] |
| DIG 69 | DD | .~.~.~ Spacer elements [G21C-3/32M] *** (spacer grids DIG. 71) |
| DIG 70 | DD | .~.~.~.~ Helicoidal spacer elements [G21C-3/32M2] |
| DIG 71 | DD | .~.~.~ Spacer grids; other spacer devices [G21C-3/34] |
| DIG 72 | DD | .~.~.~.~ Compact spacer grids (e.g., made of a plate or a blade) [G21C-3/34A] |
| DIG 73 | DD | .~.~.~.~ Spacer grids formed of assembled tubular elements [G21C-3/34B] |
| DIG 74 | DD | .~.~.~.~ Spacer grids wherein each cell has a circular cross section; cells formed of assembled metallic nonintersecting strips [G21C-3/34C] |
| DIG 75 | DD | .~.~.~.~ Spacer grids wherein each cell has a polygonal (e.g., square cross section) ; cells formed of assembled metallic nonintersecting strips [G21C-3/34D] |
| DIG 76 | DD | .~.~.~.~.~ Polygonal cells formed of intersecting strips [G21C-3/34D2] |
| DIG 77 | DD | .~.~.~.~.~.~ The cells being provided with fuel element supporting members [G21C-3/34D2A] |
| DIG 78 | DD | .~.~.~.~.~.~.~ Supporting members formed only by deformations in the intersecting strips [G21C-3/34D2A2] |
| DIG 79 | DD | .~.~.~.~.~.~.~ Supporting members formed only of elements fixed on the strips (e.g., by welding) [G21C-3/34D2A4] |
| DIG 80 | DD | .~.~.~.~ Spacer grids formed by metallic wires (e.g., springs) [G21C-3/34E] |
| DIG 81 | DD | .~.~.~.~ Fabrication of spacer grids [G21C-3/34F] |
| DIG 82 | DD | .~.~ Assemblies of plate-shaped fuel elements or coaxial tubes [G21C-3/36] |
| DIG 83 | DD | .~ Fuel units consisting of a single fuel element in a supporting sleeve or in another supporting element [G21C-3/38] |
| DIG 84 | DD | .~ Structural combination of fuel element with thermoelectric element for direct production of electric energy from fission heat; or with another arrangement for direct production of electric energy (e.g., a thermionic device) [G21C-3/40] *** (temperature measurement DIG. 236; combination with thermoelements for temperature measurements DIG. 241) |
| DIG 85 | DD | .~ Selection of substances for use as reactor fuel [G21C-3/42] |
| DIG 86 | DD | .~.~ Fluid or fluent reactor fuel [G21C-3/44] |
| DIG 87 | DD | .~.~.~ Aqueous compositions [G21C-3/46] |
| DIG 88 | DD | .~.~.~.~ True or colloidal solutions of the active constituent [G21C-3/48] |
| DIG 89 | DD | .~.~.~.~ Suspensions of the active constituent; Slurries [G21C-3/50] |
| DIG 90 | DD | .~.~.~ Liquid metal compositions [G21C-3/52] |
| DIG 91 | DD | .~.~.~ Fused salt, oxide or hydroxide compositions [G21C-3/54] |
| DIG 92 | DD | .~.~.~ Gaseous compositions; Suspensions in a gaseous carrier [G21C-3/56] |
| DIG 93 | DD | .~.~ Solid reactor fuel; Pellets made of fissile material [G21C-3/58] |
| DIG 94 | DD | .~.~.~ Metallic fuel; Intermetallic dispersions [G21C-3/60] |
| DIG 95 | DD | .~.~.~ Ceramic fuel [G21C-3/62] |
| DIG 96 | DD | .~.~.~.~ Oxide fuels [G21C-3/62B] |
| DIG 97 | DD | .~.~.~.~ Coated fuel particles [G21C-3/62J] |
| DIG 98 | DD | .~.~.~.~ Ceramic dispersion fuel (e.g., cermet) [G21C-3/64] |
| DIG 99 | DD | MODERATOR OR CORE STRUCTURE; SELECTION OF MATERIALS FOR USE AS MODERATOR [G21C-5/00] |
| DIG 100 | DD | .~ Details [G21C-5/02] |
| DIG 101 | DD | .~.~ Spatial arrangements allowing for Wigner growth [G21C-5/04] |
| DIG 102 | DD | .~.~ Means for locating or supporting fuel elements [G21C-5/06] *** (means forming part of the element DIG. 48) |
| DIG 103 | DD | .~.~ Means for preventing undesired asymmetric expansion of the complete structure (e.g., stretching devices, pins) [G21C-5/08] |
| DIG 104 | DD | .~.~ Means for supporting the complete structure [G21C-5/10] *** (arrangements for supporting vessels and core structure DIG. 168) |
| DIG 105 | DD | .~ Characterized by composition (e.g., the moderator containing additional substances which ensure improved heat resistance of the moderator [G21C-5/12] *** (purification of fluid moderators during the operation of the reactor DIG. 266) |
| DIG 106 | DD | .~.~ Moderators made of organic materials [G21C-5/12B] |
| DIG 107 | DD | .~.~ Carbonic moderators [G21C-5/12G] |
| DIG 108 | DD | .~ Characterized by shape [G21C-5/14] |
| DIG 109 | DD | .~.~ Shape of its constituent parts [G21C-5/16] |
| DIG 110 | DD | .~ Characterized by the provision of more than one active zone [G21C-5/18] |
| DIG 111 | DD | .~.~ Wherein one zone contains fissile material and another zone contains breeder material [G21C-5/20] |
| DIG 112 | DD | .~.~ Wherein one zone is a superheating zone [G21C-5/22] |
| DIG 113 | DD | CONTROL OF NUCLEAR REACTION [G21C-7/00] |
| DIG 114 | DD | .~ Flux flattening [G21C-7/00B] |
| DIG 115 | DD | .~ By using self-regulating properties of reactor materials (e.g., Doppler effect) [G21C-7/02] *** (arrangements that involve temperature stability DIG. 136) |
| DIG 116 | DD | .~.~ Of burnable poisons [G21C-7/04] |
| DIG 117 | DD | .~ By application of neutron-absorbing material (i.e., material with absorption cross section very much in excess of reflection cross section) [G21C-7/06] |
| DIG 118 | DD | .~.~ By displacement of solid control elements (e.g., control rods) [G21C-7/08] |
| DIG 119 | DD | .~.~.~ Construction of control elements [G21C-7/10] |
| DIG 120 | DD | .~.~.~.~ Control assemblies containing one or more absorbant as well as other elements (e.g., fuel or moderator elements) [G21C-7/10B] |
| DIG 121 | DD | .~.~.~.~ Control elements adapted for pebble bed reactors [G21C-7/10C] |
| DIG 122 | DD | .~.~.~.~ Deformable control elements (e.g., flexible, telescopic or articulated) [G21C-7/10D] |
| DIG 123 | DD | .~.~.~.~ Control elements made of flat elements; Control elements having cruciform cross section [G21C-7/10E] |
| DIG 124 | DD | .~.~.~.~ Cluster or spider control rods [G21C-7/10F] |
| DIG 125 | DD | .~.~.~ Means for moving control elements to desired position [G21C-7/12] |
| DIG 126 | DD | .~.~.~.~ Mechanical drive arrangements [G21C-7/14] |
| DIG 127 | DD | .~.~.~.~ Hydraulic or pneumatic drive [G21C-7/16] |
| DIG 128 | DD | .~.~.~ Means for obtaining differential movement of control elements [G21C-7/18] |
| DIG 129 | DD | .~.~.~ Disposition of shock-absorbing devices; Braking arrangements [G21C-7/20] *** (shock absorbers in general F16F) |
| DIG 130 | DD | .~.~ By displacement of a fluid or fluent neutron-absorbing material (e.g., by adding neutron absorbing material to the coolant) [G21C-7/22] |
| DIG 131 | DD | .~.~ Selection of substances for use as neutron-absorbing material [G21C-7/24] |
| DIG 132 | DD | .~ By displacement of the moderator or parts thereof; by changing the moderator concentration [G21C-7/26] |
| DIG 133 | DD | .~.~ Spectral shift control [G21C-7/26B] |
| DIG 134 | DD | .~ By displacement of the reflector or parts thereof [G21C-7/28] |
| DIG 135 | DD | .~ By displacement of the reactor fuel or fuel elements [G21C-7/30] |
| DIG 136 | DD | .~ By varying flow of coolant through the core; by adjusting the coolant or moderator temperature [G21C-7/32] |
| DIG 137 | DD | .~ By utilization of a primary neutron source [G21C-7/34] |
| DIG 138 | DD | .~ Control circuits [G21C-7/36] |
| DIG 139 | DD | EMERGENCY PROTECTION ARRANGEMENTS STRUCTALLY ASSOCIATED WITH THE REACTOR (e.g., safety valves provided with pressure equalization devices) [G21C-9/00] *** (emergency cooling arrangements DIG. 196) |
| DIG 140 | DD | .~ Pressure suppression [G21C-9/00B] |
| DIG 141 | DD | .~.~ By rupture discs or diaphragms [G21C-9/00B2] |
| DIG 142 | DD | .~.~ By stream condensation or by thermal accumulation [G21C-9/00B4] |
| DIG 143 | DD | .~ Core catchers [G21C-9/00D] |
| DIG 144 | DD | .~ Against explosions (e.g., blast shields) [G21C-9/00F] |
| DIG 145 | DD | .~ Against Na- or Ka- reactions [G21C-9/00I] |
| DIG 146 | DD | .~ Means for effecting very rapid reduction of the reactivity factor under fault conditions (e.g., reactor fuse, control elements having arrangements activated in an emergency) [G21C-9/02] *** (control elements, per se, DIG. 113+) |
| DIG 147 | DD | .~.~ By fast movement of a solid (e.g, pebbles) [G21C-9/02B] |
| DIG 148 | DD | .~.~ By an absorbant fluid [G21C-9/02D] |
| DIG 149 | DD | .~.~ Reactor fuses [G21C-9/02F] |
| DIG 150 | DD | .~.~ Rupture diaphragms [G21C-9/02H] |
| DIG 151 | DD | .~ Means for suppressing fires; Earthquake protection [G21C-9/04] |
| DIG 152 | DD | SHEILDING STRUCTURALLY ASSOCIATED WITH THE REACTOR [G21C-11/00] |
| DIG 153 | DD | .~ Biological sheilding; Neutron and gamma shielding [G21C-11/02] *** (in general DIG. 319+) |
| DIG 154 | DD | .~.~ Inside the reactor vessel [G21C-11/02B] |
| DIG 155 | DD | .~.~.~ Structurally combined with the casing [G21C-11/02B2] |
| DIG 156 | DD | .~.~ In apertures or channels through a wall [G21C-11/02D] |
| DIG 157 | DD | .~.~ Characterized by the form or by the material [G21C-11/02F] |
| DIG 158 | DD | .~.~ On waterborne craft [G21C-11/04] |
| DIG 159 | DD | .~ Reflecting shields (i.e., for minimizing loss of neutrons) [G21C-11/06] |
| DIG 160 | DD | .~ Thermal shields; Thermal linings (i.e., for dissipating heat from gamma radiation which would otherwise heat an outer biological shield); Thermal insulation [G21C-11/08] |
| DIG 161 | DD | .~.~ Consisting of a nonmetallic layer of insulating material [G21C-11/08B] |
| DIG 162 | DD | .~.~ Consisting of one or more metallic layers [G21C-11/08D] |
| DIG 163 | DD | .~.~.~ Consisting exclusively of several metallic layers [G21C-11/08D2] |
| DIG 164 | DD | .~.~ Consisting of a combination of nonmetallic and metallic layers (e.g., metal-sand-metal-concrete) [G21C-11/08E] |
| DIG 165 | DD | .~.~ Consisting of a stagnant or a circulating fluid [G21C-11/08F] |
| DIG 166 | DD | PRESSURE VESSELS; CONTAINMENT VESSELS [G21C-13/00] *** (chemical or physical processes B01J-3/00; pressure vessels in general F16J-12/00) |
| DIG 167 | DD | .~ Details (e.g., seals, supporting constructions, ventillating arrangements, tube joints with a vessel wall) [G21C-13/02] |
| DIG 168 | DD | .~.~ Supporting constructions for pressure vessels or containers [G21C-13/02B] |
| DIG 169 | DD | .~.~ Seals (e.g., for pressure vessels or containers [G21C-13/02D] |
| DIG 170 | DD | .~.~.~ For container apertures [G21C-13/02D2] |
| DIG 171 | DD | .~.~ Tube joints with a vessel wall (e.g., taking into account thermal stresses) [G21C-13/02F] |
| DIG 172 | DD | .~.~ Ventillating arrangements [G21C-13/02G] |
| DIG 173 | DD | .~.~ Tube crossings through a vessel wall [G21C-13/02H] |
| DIG 174 | DD | .~.~ Arrangements for expansion and contraction [G21C-13/04] |
| DIG 175 | DD | .~.~ Sealing plugs [G21C-13/06] |
| DIG 176 | DD | .~.~.~ For tubes (e.g., standpipes; Locking-devices for the plugs included) [G21C-13/06B] |
| DIG 177 | DD | .~.~.~.~ Seals for the plugs [G21C-13/06B2] |
| DIG 178 | DD | .~.~.~ Closures for reactor-vessels (also rotatable) [G21C-13/06D] |
| DIG 179 | DD | .~.~.~.~ Seals for closures or for rotatable closures [G21C-13/06D2] |
| DIG 180 | DD | .~ Vessels characterized by the material; Selection of materials for pressure vessels [G21C-13/08] |
| DIG 181 | DD | .~.~ Metallic vessels [G21C-13/08B] |
| DIG 182 | DD | .~.~.~ Tube-type vessels (e.g., for not essentially pressurized coolants) [G21C-13/08B2] |
| DIG 183 | DD | .~.~ Concrete vessels [G21C-13/08D] |
| DIG 184 | DD | .~.~.~ Made of prestressed-concrete [G21C-13/08D2] |
| DIG 185 | DD | .~.~.~.~ Particulars concerning pre-stressing devices (and cables) [G21C-13/08D2B] |
| DIG 186 | DD | .~ Means for preventing contamination in the event of leakage (e.g., double wall) [G21C-13/10] |
| DIG 187 | DD | COOLING ARRANGEMENTS WITHIN THE PRESSURE VESSEL CONTAINING THE CORE; SELECTION OF SPECIFIC COOLANTS [G21C-15/00] |
| DIG 188 | DD | .~ Arrangements or disposition of passages in which heat is transferred to the coolant; Coolant flow control devices [G21C-15/02] *** (DIG. 246 takes precedence); (coolant flow control through fuel assemblies (e.g., flow restrictors) DIG. 60) |
| DIG 189 | DD | .~.~ From fissile or breeder material [G21C-15/04] *** (DIG. 59 takes precedence) |
| DIG 190 | DD | .~.~.~ In fuel elements [G21C-15/06] |
| DIG 191 | DD | .~.~ From moderating material [G21C-15/08] |
| DIG 192 | DD | .~.~ From reflector or thermal shield [G21C-15/10] |
| DIG 193 | DD | .~.~ From pressure vessel; from containment vessel [G21C-15/12] |
| DIG 194 | DD | .~.~ From headers; from joints in ducts [G21C-15/14] |
| DIG 195 | DD | .~ Comprising means for separating liquid and steam [G21C-15/16] |
| DIG 196 | DD | .~ Emergency cooling arrangements; Removing shut-down heat [G21C-15/18] |
| DIG 197 | DD | .~ Partitions or thermal insulation between fuel channel and moderator [G21C-15/20] |
| DIG 198 | DD | .~ Structural association of coolant tubes with headers [G21C-15/22] |
| DIG 199 | DD | .~ Promoting flow of the coolant [G21C-15/24] |
| DIG 200 | DD | .~.~ For liquids [G21C-15/24B] |
| DIG 201 | DD | .~.~.~ For liquid metals [G21C-15/24B2] |
| DIG 202 | DD | .~.~.~ Jet-pumps [G21C-15/24B4] |
| DIG 203 | DD | .~.~ For gases (ventilators) [G21C-15/24D] |
| DIG 204 | DD | .~.~ Heat-pipes [G21C-15/24F] |
| DIG 205 | DD | .~.~ By convection (e.g., using chimneys, using divergent channels [G21C-15/26] |
| DIG 206 | DD | .~ Selection of specific coolants; additions to the reactor coolants (e.g., against moderator corrosion) [G21C-15/28] *** (if serving as the moderator DIG.105, Compositions, per se, C09K-5/00; Organic coolants DIG. 106; purification and regeneration of the reactor coolants DIG. 266) |
| DIG 207 | DD | MONITORING; TESTING; MAINTAINING [G21C-17/00] |
| DIG 208 | DD | .~ Mechanical simulators [G21C-17/00B] *** (electrical or magnetic simulators G06G-7/54) |
| DIG 209 | DD | .~ Detection of leaks [G21C-17/00C] *** (by testing the coolant or the moderator DIG. 224) |
| DIG 210 | DD | .~ Remote inspection of vessels (e.g., pressure vessels) [G21C-17/00D] |
| DIG 211 | DD | .~.~ Inspection of outer surfaces of vessels [G21C-17/00D1] |
| DIG 212 | DD | .~.~ Inspection of inner surfaces of vessels [G21C-17/00D2] |
| DIG 213 | DD | .~.~ Inspection vehicles [G21C-17/00D3] |
| DIG 214 | DD | .~ Inspection or maintenance of pipe-lines or tubes in nuclear installations [G21C-17/00F] |
| DIG 215 | DD | .~ Devices or arrangements for monitoring coolant or moderator [G21C-17/02] |
| DIG 216 | DD | .~.~ For monitoring liquid coolants or moderators [G21C-17/02B] |
| DIG 217 | DD | .~.~.~ For monitoring liquid metal coolants [G21C-17/02B2] *** (molten metal sampling in general G01N-1/12B) |
| DIG 218 | DD | .~.~.~.~ Liquid metal leaks detection [G21C-17/02B2B] *** (detecting leaks in pipe-line systems in general F17D-5/00) |
| DIG 219 | DD | .~.~ For monitoring gaseous coolants [G21C-17/02D] |
| DIG 220 | DD | .~.~ Solid moderators testing (e.g., graphite) [G21C-17/02F] |
| DIG 221 | DD | .~.~ Reactor coolants flow measuring or monitoring [G21C-17/02H] *** (measuring volume or mass flow in general G01F) |
| DIG 222 | DD | .~.~ Moderator or coolant level detection devices [G21C-17/02K] *** (indicating or measuring liquid level in general G01F-23/00) |
| DIG 223 | DD | .~.~ Moderator or coolant boiling detection [G21C-17/02M] |
| DIG 224 | DD | .~.~ Detecting burst slugs [G21C-17/04] |
| DIG 225 | DD | .~.~.~ Characterized by (matrix) systems for checking the coolant channels [G21C-17/04B] |
| DIG 226 | DD | .~.~.~ Devices for selective sampling (e.g., valves, shutters, rotatable selector valves) [G21C-17/04D] |
| DIG 227 | DD | .~.~.~ Detectors and metering devices for the detection of fission products [G21C-17/04F] |
| DIG 228 | DD | .~.~.~.~ Precipitation chambers [G21C-17/04F2] |
| DIG 229 | DD | .~.~.~.~ Detection and metering circuits [G21C-17/04F4] |
| DIG 230 | DD | .~.~.~ Characterized by a special construction of fuel elements (e.g., by a confined "tracer") [G21C-17/04H] |
| DIG 231 | DD | .~ Devices or arrangements for monitoring or testing fuel or fuel elements (e.g., for burn-up, for contamination, for leak-tightness) not during reactor operation [G21C-17/06] *** (DIG. 235, DIG. 236 take precedence) (detection of leaking fuel elements during reactor operation DIG. 224) |
| DIG 232 | DD | .~.~ Leak-tightness control [G21C-17/06B] *** (DIG. 234 takes precedence) |
| DIG 233 | DD | .~.~ Burn-up control [G21C-17/06D] *** (DIG. 234 takes precedence) |
| DIG 234 | DD | .~.~ Control of spherical elements [G21C-17/06F] |
| DIG 235 | DD | .~ Structural combination of reactor core or moderator structure with viewing means (e.g., with television camera, periscope, window) [G21C-17/08] |
| DIG 236 | DD | .~ Structural combination of fuel element, control rod, reactor core, or moderator structure with sensitive instruments (e.g., for measuring temperature) [G21C-17/10] |
| DIG 237 | DD | .~.~ Measuring reactivity [G21C-17/10B] |
| DIG 238 | DD | .~.~ Measuring the reactor flux within the reactor (e.g., within its pressure vessel) [G21C-17/10D] |
| DIG 239 | DD | .~.~ Measuring the temperature [G21C-17/10E] |
| DIG 240 | DD | .~.~ Passages and insulators for electric cables and for measuring purposes [G21C-17/10G] |
| DIG 241 | DD | .~.~ The sensitive element being part of a fuel element or a fuel assembly [G21C-17/10S] *** (structural combination with a thermoelectric element for direct production of electrical energy DIG. 84) |
| DIG 242 | DD | .~.~ Sensitive element forming part of control element [G21C-17/12] |
| DIG 243 | DD | .~ Period meters [G21C-17/14] |
| DIG 244 | DD | ARRANGEMENTS FOR TREATING, FOR HANDLING, OR FOR FACILITATING THE HANDLING OF, FUEL OR OTHER MATERIALS WHICH ARE USED WITHIN THE REACTOR (e.g., within its pressure vessel) [G21C-19/00] |
| DIG 245 | DD | .~ Details of handling arrangements [G21C-19/02] |
| DIG 246 | DD | .~.~ Means for controlling flow of coolant over objects being handled; Means for controlling flow of coolant through channel being serviced (e.g., for preventing "blow-out") [G21C-19/04] |
| DIG 247 | DD | .~.~ Magazines for holding fuel element or control elements [G21C-19/06] |
| DIG 248 | DD | .~.~.~ Storage racks; Storage pools [G21C-19/06B] |
| DIG 249 | DD | .~.~.~ Rotatable magazines [G21C-19/06D] |
| DIG 250 | DD | .~.~ Means for heating fuel elements before introduction into the core; Means for heating or cooling fuel elements after removal from the core [G21C-19/08] |
| DIG 251 | DD | .~.~ Lifting devices or pulling devices adapted for cooperation with fuel elements or with control elements [G21C-19/10] |
| DIG 252 | DD | .~.~.~ With grasping or spreading coupling elements [G21C-19/10B] |
| DIG 253 | DD | .~.~.~ With revolving coupling elements (e.g., socket coupling) [G21C-19/10D] |
| DIG 254 | DD | .~.~.~ With latching devices and ball couplings [G21C-19/10F] |
| DIG 255 | DD | .~.~ Arrangements for exerting direct hydraulic or pneumatic force on fuel element or on control element [G21C-19/12] |
| DIG 256 | DD | .~ Characterized by their adaptation for use with horizontal channels in the reactor core [G21C-19/14] |
| DIG 257 | DD | .~ Articulated or telescopic chutes or tubes for the connection to channels in the reactor core [G21C-19/16] |
| DIG 258 | DD | .~ Apparatus for bringing fuel elements to the reactor charge area (e.g., from a storage place) [G21C-19/18] |
| DIG 259 | DD | .~ Arrangements for introducing object into the pressure vessel; Arrangements for handling objects within the pressure vessel; Arrangements for removing objects from the pressure vessel [G21C-19/20] |
| DIG 260 | DD | .~.~ Arrangements for handling ball-form (i.e., pebble fuel) [G21C-19/20A] |
| DIG 261 | DD | .~.~ Interchanging of fuel elements in the core (fuel shuffling) [G21C-19/20B] |
| DIG 262 | DD | .~.~ Arrangements for obtaining access to the interior of a pressure vessel while the reactor is operating [G21C-19/22] |
| DIG 263 | DD | .~.~.~ By using an auxiliary vessel which is temporarily sealed to the pressure vessel [G21C-19/24] |
| DIG 264 | DD | .~ Arrangements for removing jammed or damaged fuel elements or control elements; Arrangements for moving broken parts thereof [G21C-19/26] |
| DIG 265 | DD | .~ Arrangements for introducing fluent material into the reactor core; Arrangements for removing fluent material from the reactor core [G21C-19/28] *** (pumping coolant DIG. 199+ and 294) |
| DIG 266 | DD | .~.~ With continuous purification of circulating fluent material (e.g., by extraction of fission products, deterioration or corrosion products, impurities (e.g., by cold traps) [G21C-19/30] *** (purification of circulating fluid fuels DIG. 281; separation in general B01D) |
| DIG 267 | DD | .~.~.~ Specially adapted for gases [G21C-19/30B] *** (decontamination of gases DIG. 378) |
| DIG 268 | DD | .~.~.~ Specially adapted for liquids [G21C-19/30D] *** (decontamination of liquids DIG. 379) |
| DIG 269 | DD | .~.~.~.~ For molten metals [G21C-19/30D2] |
| DIG 270 | DD | .~.~.~.~.~ Using "cold traps" [G21C-19/30D2B] |
| DIG 271 | DD | .~.~.~ Recombination devices [G21C-19/30R] |
| DIG 272 | DD | .~ Apparatus for removing radioactive objects or materials from the reactor discharge area (e.g., to a storage place); Apparatus for handling radioactive objects or materials within a storage place or removing them therefrom [G21C-19/32] *** (disposal of waste material DIG. 375+) |
| DIG 273 | DD | .~ Apparatus or processes for removing canning or casings from fuel; Separation of fuel and jacket material; also fuel elements, perforation (e.g., for sampling); Separation of fuel elements and fuel element-jackets in pieces; removal of end closures [G21C-19/34] *** (shielded cells DIG. 355+) |
| DIG 274 | DD | .~.~ Mechanical means only [G21C-19/36] |
| DIG 275 | DD | .~.~ Chemical means only [G21C-19/38] |
| DIG 276 | DD | .~ Arrangements for preventing occurence of critical conditions (e.g., during storage) [G21C-19/40] |
| DIG 277 | DD | .~ Reprocessing of irradiated fuel [G21C-19/42] |
| DIG 278 | DD | .~.~ Of irradiated solid fuel [G21C-19/44] |
| DIG 279 | DD | .~.~.~ Aqueous processes (e.g., by using organic extraction means, including the regeneration of these means) [G21C-19/46] |
| DIG 280 | DD | .~.~.~ Nonaqueous processes [G21C-19/48] |
| DIG 281 | DD | .~.~ Of irradiated fuel; also the regeneration of the fuels while the reactor is in operation [G21C-19/50] |
| DIG 282 | DD | APPARATUS OR PROCESSES SPECIALLY ADAPTED TO THE MANUFACTURE OF REACTORS OR PARTS THEREOF [G21C-21/00] *** (in general Section B, e.g., B23) |
| DIG 283 | DD | .~ Manufacture of fuel elements or breeder elements contained in nonactive casings [G21C-21/02] |
| DIG 284 | DD | .~.~ By vibrational compaction or tamping of fuel in the jacket [G21C-21/04] |
| DIG 285 | DD | .~.~ By rotatable swaging of the jacket around the fuel [G21C-21/06] |
| DIG 286 | DD | .~.~ By a slip-fit cladding process; by crimping the jacket around the fuel [G21C-21/08] |
| DIG 287 | DD | .~.~ By extrusion, drawing, or stretching; by rolling (e.g., "picture frame" technique) [G21C-21/10] |
| DIG 288 | DD | .~.~ By hydrostatic or thermo-pneumatic cannings (in general by pressing without lenthening, e.g., explosive coating) [G21C-21/12] |
| DIG 289 | DD | .~.~ By plating the fuel in a fluid [G21C-21/14] |
| DIG 290 | DD | .~.~ By casting or dipping techniques [G21C-21/16] |
| DIG 291 | DD | .~.~ Manufacture of control elements covered by DIG. 113+ [G21C-21/18] |
| DIG 292 | DD | DETAILS OF NUCLEAR POWER PLANT [G21D-1/00] *** (control DIG. 296) |
| DIG 293 | DD | .~ Nuclear facilities decommissioning arrangements [G21D-1/00B] *** (decontamination arrangements; treating radioactively contaminated material DIG. 375+) |
| DIG 294 | DD | .~ Arrangements of auxiliary equipment [G21D-1/02] |
| DIG 295 | DD | .~ Pumping arrangements [G21D-1/04] *** (within the reactor pressure vessel DIG. 199+; electrodynamic pumps H02K-44/02) |
| DIG 296 | DD | CONTROL OF NUCLEAR POWER PLANT [G21D-3/00] *** (control of nuclear reaction in general DIG. 113) |
| DIG 297 | DD | .~ Manual control [G21D-3/02] |
| DIG 298 | DD | .~ Safety arrangements [G21D-3/04] *** (emergency protection of reactor DIG. 139+) |
| DIG 299 | DD | .~.~ Responsive to faults within the plant [G21D-3/06] *** (in the reactor DIG. 139+) |
| DIG 300 | DD | .~ Regulation of any parameters in the plant [G21D-3/08] |
| DIG 301 | DD | .~.~ By a combination of a variable derived from neutron flux with other controlling variables (e.g., derived from temperature, cooling flow, pressure) [G21D-3/10] |
| DIG 302 | DD | .~.~ By adjustment of the reactor in response only to changes in engine demand [G21D-3/12] |
| DIG 303 | DD | .~.~.~ Varying flow of coolant [G21D-3/14] |
| DIG 304 | DD | .~.~.~ Varying reactivity [G21D-3/16] |
| DIG 305 | DD | .~.~ By adjustment of plant external to the reactor only in response to change in reactivity [G21D-3/18] |
| DIG 306 | DD | ARRANGEMENTS OF REACTOR AND ENGINE IN WHICH REACTOR-PRODUCED HEAT IS CONVERTED INTO MECHANICAL ENERGY [G21D-5/00] |
| DIG 307 | DD | .~ Reactor and engine structurally combined (e.g., portable) [G21D-5/02] |
| DIG 308 | DD | .~ Reactor and engine not structurally combined [G21D-5/04] |
| DIG 309 | DD | .~.~ With engine working medium circulating through reactor core [G21D-5/06] |
| DIG 310 | DD | .~.~ With engine working medium heated in a heat exhanger by the reactor coolant [G21D-5/08] |
| DIG 311 | DD | .~.~.~ Liquid working medium partially heated by reactor and vaporized by heat source external to the core (e.g., with oil heating) [G21D-5/10] |
| DIG 312 | DD | .~.~.~ Liquid working medium vaporized by reactor coolant [G21D-5/12] |
| DIG 313 | DD | .~.~.~.~ And also superheated by reactor coolant [G21D-5/14] |
| DIG 314 | DD | .~.~.~.~ Superheated by separate heat source [G21D-5/16] |
| DIG 315 | DD | ARRANGEMENTS FOR DIRECT PRODUCTION OF ELECTRIC ENERGY FROM FUSION OR FISSION REACTIONS [G21D-7/00] *** (obtaining electric energy from radioactive sources DIG. 410) |
| DIG 316 | DD | .~ Using magneto-hydrodynamic generators [G21D-7/02] |
| DIG 317 | DD | .~ Using thermoelectric elements and/or thermoionic converters [G21D-7/04] *** (structural combination of fuel element with thermoelectric element and/or thermoionic converter DIG. 84; structural combination of fuel element with thermoelectric element DIG. 415, DIG. 84) |
| DIG 318 | DD | ARRANGEMENTS TO PROVIDE HEAT FOR PURPOSES OTHER THAN CONVERSION INTO POWER (e.g., for heating buildings) [G21D-9/00] |
| DIG 319 | DD | SHIELDING CHARACTERIZED BY THE COMPOSITION OF THE MATERIALS [G21F-1/00] |
| DIG 320 | DD | .~ Selection of uniform shielding materials [G21F-1/02] |
| DIG 321 | DD | .~.~ Liquids [G21F-1/02B] |
| DIG 322 | DD | .~.~ Semi-liquids, gels, pastes [G21F-1/02C] |
| DIG 323 | DD | .~.~ Concretes; Other hydraulic hardening materials [G21F-1/04] |
| DIG 324 | DD | .~.~.~ Combined with other materials dispersed in the carrier [G21F-1/04B] |
| DIG 325 | DD | .~.~.~.~ With organic substances [G21F-1/04B2] |
| DIG 326 | DD | .~.~.~.~ With metals [G21F-1/04B4] |
| DIG 327 | DD | .~.~ Ceramics; Glasses; Refractories [G21F-1/06] *** (cermets DIG. 328) |
| DIG 328 | DD | .~.~ Metals; Alloys; Cermets (i.e., sintered mixtures of ceramics and metals) [G21F-1/08] |
| DIG 329 | DD | .~.~.~ Heavy metals or alloys [G21F-1/08B] |
| DIG 330 | DD | .~.~ Organic substances; Dispersions in organic carriers [G21F-1/10] |
| DIG 331 | DD | .~.~.~ Dispersions in organic carriers [G21F-1/10B] |
| DIG 332 | DD | .~.~.~.~ Metallic dispersions [G21F-1/10B2] |
| DIG 333 | DD | .~ Laminated shielding materials [G21F-1/12] |
| DIG 334 | DD | .~.~ Comprising metals [G21F-1/12B] |
| DIG 335 | DD | SHIELDING CHARACTERIZED BY ITS PHYSICAL FORM (e.g., granules or shape of the material) [G21F-3/00] |
| DIG 336 | DD | .~ Clothing [G21F-3/02] |
| DIG 337 | DD | .~.~ Clothing surrounding the wearer completely [G21F-3-02B] |
| DIG 338 | DD | .~.~ Aprons [G21F-3/02C] |
| DIG 339 | DD | .~.~ Gloves [G21F-3/02D] *** (mounting means on glove boxes DIG. 363) |
| DIG 340 | DD | .~ Bricks; Shields made up therefrom [G21F-3/04] |
| DIG 341 | DD | TRANSPORTABLE OR PORTABLE SHIELDED CONTAINERS [G21F-5/00] |
| DIG 342 | DD | .~ Containers for fluid wastes [G21F-5/00A] |
| DIG 343 | DD | .~ Containers for solid radioactive wastes (e.g., ultimate disposal containers) [G21F-5/00B] *** (DIG. 347 takes precedence) |
| DIG 344 | DD | .~.~ Containers for fuel elements [G21F-5/00B2] |
| DIG 345 | DD | .~.~.~ Fuel element racks in the container [G21F-5/00B2B] |
| DIG 346 | DD | .~ Shock absorbers, specially adapted therefor (e.g., impact buffers for containers) [G21F5-00D] |
| DIG 347 | DD | .~ Containers provided with a rotatable drum [G21F-5/00F] |
| DIG 348 | DD | .~ Specially adapted heat removal systems (e.g., by a circulating fluid or by cooling fins.); Specially adapted protection against external fire [G21F-5/00H] |
| DIG 349 | DD | .~ Closures for containers or corresponding sealing arrangements [G21F-5/00J] |
| DIG 350 | DD | .~ For storing radioactive sources (e.g., source carriers for irradiation units); Radio isotope containers [G21F-5/00L] |
| DIG 351 | DD | .~.~ Syringe shields and holders [G21F-5/00L2] |
| DIG 352 | DD | .~ Specially adapted containers or shipping cask handling devices (e.g., transporting devices) [G21F-5/00N] |
| DIG 353 | DD | .~ With provision for restricted exposure of a radiation source within the container [G21F-5/02] |
| DIG 354 | DD | .~.~ Means for controlling exposure (e.g., time, size of aperture) [G21F-5/04] |
| DIG 355 | DD | SHIELDED CELLS OR ROOMS [G21F-7/00] |
| DIG 356 | DD | .~ Shielded passages through walls; Locks; Transferring devices between rooms [G21F-7/00B] *** (between glove-boxes DIG. 362) |
| DIG 357 | DD | .~.~ Transferring by fluidic means [G21F-7/00B2] |
| DIG 358 | DD | .~ Room atmosphere, temperature or pressure control devices [G21F-7/00C] *** (glove-boxes DIG. 364) |
| DIG 359 | DD | .~ Observation devices permitting vision but shielding the observer (e.g., window, periscope) [G21F-7/02] |
| DIG 360 | DD | .~.~ Windows (e.g., shielded) [G21F-7/02B] |
| DIG 361 | DD | .~ Shielded glove-boxes [G21F-7/04] |
| DIG 362 | DD | .~.~ Shielded passages through walls; Locks; Closing or transferring means between glove-boxes [G21F-7/04B] *** (in general DIG. 356) |
| DIG 363 | DD | .~.~ Glove mounting means [G21F-7/04C] |
| DIG 364 | DD | .~.~ Glove-box atmosphere, temperature or pressure control devices [G21F-7/04D] *** (in general DIG. 358) |
| DIG 365 | DD | .~.~ Lighting [G21F-7/04F] |
| DIG 366 | DD | .~.~ Transportable glove-boxes [G21F-7/04G] |
| DIG 367 | DD | .~ Structural combination with remotely controlled apparatus (e.g., with manipulators) [G21F-7/06] |
| DIG 368 | DD | .~.~ Integrated manipulators [G21F-7/06B] |
| DIG 369 | DD | .~.~.~ Mounted in a wall (e.g., pivotably mounted) [G21F-7/06B2] |
| DIG 370 | DD | .~.~ Remotely manipulated measuring or controlling devices [G21F-7/06C] *** (combined with window DIG. 359) |
| DIG 371 | DD | .~.~ Remotely manipulated machinery [G21F-7/06D] |
| DIG 372 | DD | .~.~ Remotely manipulated tools [G21F-7/06F] |
| DIG 373 | DD | .~.~ Transferring devices within cells or boxes [G21F-7/06G] *** (between cells DIG. 356, 362) |
| DIG 374 | DD | .~.~ Remotely manipulating devices for fluids [G21F-7/06H] |
| DIG 375 | DD | DECONTAMINATION ARRANGEMENTS; TREATING RADIOACTIVELY CONTAMINATED MATERIAL [G21F-9/00] |
| DIG 376 | DD | .~ Decontamination of contaminated objects, apparatus, clothes, food; Preventing contamination thereof [G21F-9/00B] |
| DIG 377 | DD | .~ Recovery of isotopes from radioactive waste (e.g., fission products [G21F-9/00C] |
| DIG 378 | DD | .~ Treating gases [G21F-9/02] |
| DIG 379 | DD | .~ Treating liquids [G21F-9/04] |
| DIG 380 | DD | .~.~ Processing [G21F-9/06] |
| DIG 381 | DD | .~.~.~ By evaporation; by distillation [G21F-9/08] |
| DIG 382 | DD | .~.~.~ By flocculation [G21F-9/10] |
| DIG 383 | DD | .~.~.~ By absorption; by adsorption; by ion exchange [G21F-9/12] |
| DIG 384 | DD | .~.~.~ By incineration; by calcination (e.g., desiccation) [G21F-9/14] |
| DIG 385 | DD | .~.~.~ By fixation in stable solid media [G21F-9/16] |
| DIG 386 | DD | .~.~.~ By biological processes [G21F-9/18] |
| DIG 387 | DD | .~.~ Disposal of liquid waste [G21F-9/20] |
| DIG 388 | DD | .~.~.~ By storage in a tank or other container [G21F-9/22] |
| DIG 389 | DD | .~.~.~ By storage in the ground; by storage underwater (e.g., in ocean) [G21F-9/24] |
| DIG 390 | DD | .~.~.~ By dilution in water (e.g., in ocean, in stream) [G21F-9/26] |
| DIG 391 | DD | .~ Treating solids [G21F-9/28] |
| DIG 392 | DD | .~.~ Processing [G21F-9/30] |
| DIG 393 | DD | .~.~.~ By incineration [G21F-9/32] |
| DIG 394 | DD | .~.~ Disposal of solid waste [G21F-9/34] |
| DIG 395 | DD | .~.~.~ By packaging; by baling [G21F-9/36] |
| DIG 396 | DD | ARRANGEMENTS FOR CONVERTING CHEMICAL ELEMENTS BY ELECTROMAGNETIC RADIATION, CORPUSCULAR RADIATION OR PARTICLE BOMBARDMENT (e.g., producing radioactive isotopes) [G21G-1/00] |
| DIG 397 | DD | .~ In nuclear reactors {G21G-1/02] |
| DIG 398 | DD | .~ Outside of nuclear reactors or particle accelerators [G21G-1/04] |
| DIG 399 | DD | .~.~ By neutron irradiation [G21G-1/06] |
| DIG 400 | DD | .~.~.~ Accompanied by nuclear fission [G21G-1/08] |
| DIG 401 | DD | .~.~ By bombardment with electrically charged particles [G21G-1/10] *** (irradiation devices DIG. 440+) |
| DIG 402 | DD | .~.~ By electromagnetic irradiation (e.g., with gamma or X-rays) [G21G-1/12] *** (applications of radiation DIG. 421; irradiation devices DIG. 440+) |
| DIG 403 | DD | RADIOACTIVE SOURCES [G21G-4/00] *** (producing neutrons or other subatomic particles, X- or gamma rays, in fusion reactors DIG. 1+, in nuclear reactors DIG. 5+; in accelerators H05H; X-ray tubes H01J-35/00; gamma masers H01S-4/00) |
| DIG 404 | DD | .~ Neutron sources [G21G-4/02] |
| DIG 405 | DD | .~ Radioactive sources other than neutron sources [G21G-4/04] |
| DIG 406 | DD | .~.~ Characterized by constructional features [G21G-4/06] |
| DIG 407 | DD | .~.~.~ Specially adapted for medical application [G21G-4/08] |
| DIG 408 | DD | .~.~ With radium emanation [G21G-4/10] |
| DIG 409 | DD | ALLEGED CONVERSION OF CHEMICAL ELEMENTS BY CHEMICAL REACTION [G21G-5/00] |
| DIG 410 | DD | ARRANGEMENTS FOR OBTRAINING ELECTRICAL ENERGY FROM RADIOACTIVE SOURCES (e.g., from radioactive isotopes, nuclear or atomic batteries) [G21H-1/00] *** (fusion reactors DIG. 1+; nuclear reactors DIG. 5+) |
| DIG 411 | DD | .~ Cells charged directly by beta radiation [G21H-1/02] |
| DIG 412 | DD | .~ Cells using secondary emission induced by alpha radiation, beta radiation, or gamma radiation [G21H-1/04] *** (discharge tubes H01J-40/00) |
| DIG 413 | DD | .~ Cells wherein radiation is applied to the junction of different semiconductor materials [G21H-1/06] |
| DIG 414 | DD | .~ Cells in which radiation ionizes a gas in the presence of a junction of two dissimilar metals (i.e., contact potential difference cells) [G21H-1/08] *** (discharge tubes H01J) |
| DIG 415 | DD | .~ Cells in which radiation of disintegration heats a thermoelectric junction or a thermionic converter [G21H-1/10] *** (devices where heating occurs from fission reactions DIG. 39; discharge tubes functioning as thermionic generators H01J-45/00; thermoelectric devices comprising a junction of dissimilar materials H01L-35/00) |
| DIG 416 | DD | .~.~ Cells provided with thermoelectric generators [G21H-1/10B] |
| DIG 417 | DD | .~.~ Cells provided with thermionic generators [G21H-1/10C] |
| DIG 418 | DD | .~ Cells using conversion of the radiation into light combined with subsequent photoelectric conversion into electric energy [G21H-1/12] |
| DIG 419 | DD | ARRANGEMENTS FOR DIRECT CONVERSION OF RADIATION ENERGY FROM RADIOACTIVE SOURCES TO FORMS OF ENERGY OTHER THAN ELECTRIC ENERGY (e.g., light) [G21H-3/00] |
| DIG 420 | DD | .~ In which material is excited to luminesce by the radiation [G21H-3/02] |
| DIG 421 | DD | APPLICATIONS OF RADIATION FROM RADIOACTIVE SOURCES OR ARRANGEMENTS THEREFOR [G21H-5/00] *** |
| DIG 422 | DD | .~ As tracers [G21H-5/02] *** (medicinal preparations containing radioactive substances A61K-43/00; investigating or analyzing biological material G01N-33/16) |
| DIG 423 | DD | NUCLEAR EXPLOSIVE DEVICES; "ATOMIC BOMBS") [G21J-1/00] |
| DIG 424 | DD | PEACEFUL APPLICATIONS OF NUCLEAR EXPLOSIVE DEVICES [G21J-3/00] *** (obtaining oil, gas, water, soluble or meltable material from deep wells by means of nuclear energy E21B-43/236F, 43/24F) |
| DIG 425 | DD | .~ For excavation [G21J-3/02] |
| DIG 426 | DD | DETECTION ARRANGEMENTS FOR NUCLEAR EXPLOSIONS [G21J-5/00] *** (individual measuring devices G01N) |
| DIG 427 | DD | ARRANGEMENTS FOR HANDLING RADIATION OR PARTICLES (e.g., focusing, moderating [G21K-1/00] *** (radiation filters DIG. 435) |
| DIG 428 | DD | .~ Using diaphragms, collimators [G21K-1/02] |
| DIG 429 | DD | .~.~ Using multiple collimators (e.g., Bucky screens); other devices for eliminating undesired or dispersed radiation [G21K-1/02B] |
| DIG 430 | DD | .~.~ Using variable diaphragms, shutters, choppers [G21K-1/04] |
| DIG 431 | DD | .~ Using diffraction, refraction or reflection, e.g., monochromators [G21K-1/06] *** (DIG. 435, 445 take precedence) |
| DIG 432 | DD | .~ Deviation, concentration or focusing of the beam by electric or magnetic means [G21K-1/08] *** (electron-optical arrangements in electric discharge tubes H01J-29/46; details (e.g., electric or magnetic deviating means for direct voltage accelerators or in accelerators using single pulses) H05H-5/02; arrangements for injecting particles into orbits H05H-7/08; arrangements for ejecting particles from orbits H05H-7/10) |
| DIG 433 | DD | .~.~ By electrical means [G21K-1/087] |
| DIG 434 | DD | .~.~ By magnetic means [G21K-1/093] |
| DIG 435 | DD | .~ Scattering devices; Absorbing devices [G21K-1/10] |
| DIG 436 | DD | .~.~ Resonant absorbers or driving arrangements therefor (e.g., for Moessbauer-effect devices) [G21K-1/12] *** (motors with reciprocating, oscillating or vibrating magnet, armature or coil system in general H02K-33/00) |
| DIG 437 | DD | .~ Using charge exchange devices (e.g., for neutralizing or changing the sign of the electrical charges of beams) [G21K-1/14] *** (producing or accelerating neutral particle beams H05H-3/00) |
| DIG 438 | DD | .~ Using polarizing devices (e.g., for obtaining a polarized beam) [G21K-1/16] *** (ion sources, ion guns H01J-27/02; polarized targets for producing nuclear reactions H05H-6/00B) |
| DIG 439 | DD | CONVERSION SCREENS FOR THE CONVERSION OF THE SPATIAL DISTRIBUTION OF X-RAYS OR PARTICLE RADIATION INTO VISIBLE IMAGES (e.g., fluoroscopic screens) [G21K-4/00] *** (photographic processes using X-ray intensifiers G03C-5/17; discharge tubes comprising luminescent screens H01J-1/62; cathode-ray tubes for X-ray conversion with optical output H01J-31/50) |
| DIG 440 | DD | IRRADIATION DEVICES [G21K-5/00] *** (discharge tubes for irradiating H01J-37/00) |
| DIG 441 | DD | .~ Having no beam-forming means [G21K-5/02] |
| DIG 442 | DD | .~ With beam-forming means [G21K-5/04] |
| DIG 443 | DD | .~ Holder for targets or for other objects to be irradiated [G21K-5/08] |
| DIG 444 | DD | .~ With provision for relative movement of beam source and object to be irradiated [G21K-5/10] |
| DIG 445 | DD | GAMMA- OR X-RAY MICROSCOPES [G21K-7/00] |