Details of vacuum tubes of the types covered by group H01J21/00

HELECTRICITY H01Electric elements H01JELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS

H01J19/00Details of vacuum tubes of the types covered by group H01J21/00

H01J19/02Electron-emitting electrodes Cathodes H01J19/04Thermionic cathodes H01J19/06characterised by the material H01J19/062with alkaline-earth metal oxides, or such oxides used in conjunction with reducing agents, as an emissive material H01J19/064with other metal oxides as an emissive material H01J19/066with metals or alloys as an emissive material H01J19/068with compounds having metallic conductive properties H01J19/08Cathodes heated directly by an electric current H01J19/10characterised by the shape H01J19/12Supports Vibration-damping arrangements H01J19/14Cathodes heated indirectly by an electric current Cathodes heated by electron or ion bombardment H01J19/16Heaters H01J19/18Insulating layer or body located between heater and emissive material H01J19/20Supports for the emissive material H01J19/22Dispenser-type cathodes H01J19/24Cold cathodes H01J19/28Non-electron-emitting electrodes Screens H01J19/30characterised by the material H01J19/32Anodes H01J19/34forming part of the envelope H01J19/36Cooling of anodes H01J19/38Control electrodes H01J19/40Screens for shielding H01J19/42Mounting, supporting, spacing, or insulating of electrodes or of electrode assemblies H01J19/44Insulation between electrodes or supports within the vacuum space H01J19/46Mountings for the electrode assembly as a whole H01J19/48Mountings for individual electrodes H01J19/50Spacing members extending to the envelope H01J19/52without fixed connection between spacing member and envelope H01J19/54Vessels Containers Shield associated therewith H01J19/56characterised by the material of the vessel or container H01J19/57provided with coatings on the walls thereof Selection of materials for the coatings H01J19/58Seals between parts of vessels H01J19/60Seals for leading-in conductors H01J19/62Leading-in conductors H01J19/64Means forming part of the tube for the purpose supporting it H01J19/66Means forming part of the tube for the purpose of providing electrical connection to it H01J19/68Specified gas introduced into the tube at low pressure H01J19/70Means for obtaining or maintaining the vacuum H01J19/72Tubulations therefor H01J19/74Cooling arrangements H01J19/76Means structurally associated with the tube for indicating defects or previous use H01J19/78One or more circuit elements structurally associated with the tube H01J19/80Structurally associated resonator having distributed inductance and capacitance H01J19/82Circuit arrangements not adapted to a particular application of the tube and not otherwise provided for