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