IPC 6 English version H01J !A-H01J 5/62

H01J-H01J00562

SECTION H– ELECTRICITY

H 01

BASIC ELECTRIC ELEMENTS

H 01 J

ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS (spark-gaps H 01 T; arc lamps with consumable electrodes H 05 B; particle accelerators H 05 H)

Notes

(1)

This subclass covers only devices for producing, influencing, or using a flow of electrons or ions, e.g. for controlling, indicating, or switching of electric current, counting electric pulses, producing light or other electromagnetic oscillations, such as X-rays, or for separating or analysing radiation or particles, and having a closed or substantially closed casing containing a chosen gas, vapour, or vacuum, upon the pressure and nature of which the characteristics of the device depend.

Light sources using a combination (other than covered by group H 01 J 61/96 of this subclass) of discharge and other kinds of light generation are covered by group H 05 B 35/00.

(2)

In this subclass, groups H 01 J 1/00 to H 01 J 7/00 relate only to:

(i)

details of an unspecified kind of discharge tube or lamp, or

(ii)

details mentioned in a specification as applicable to two or more kinds of tubes or lamps as defined by groups H 01 J 11/00, H 01 J 13/00, H 01 J 15/00, H 01 J 17/00, H 01 J 21/00, H 01 J 25/00, H 01 J 27/00, H 01 J 31/00, H 01 J 33/00, H 01 J 35/00, H 01 J 37/00, H 01 J 40/00, H 01 J 41/00, H 01 J 47/00, H 01 J 49/00, H 01 J 61/00, H 01 J 63/00 or H 01 J 65/00, hereinafter called basic kinds. A detail only described with reference to, or clearly only applicable to, tubes or lamps of a single basic kind is classified in the detail group appropriate to tubes or lamps of that basic kind, e.g. H 01 J 17/04.

(3)

In this subclass, the following term is used with the meaning indicated:

–

"lamp" includes tubes emitting ultra-violet or infra-red light.

(4)

Attention is drawn to the definition of the expression "spark gaps" given in the Note following the title of subclass H 01 T. [4]

(5)

Apparatus or processes specially adapted for the manufacture of electric discharge tubes, discharge lamps, or parts thereof are classified in group H 01 J 9/00.

Details of electrodes, of magnetic control means, of screens, or of the mounting or spacing thereof, common to two or more basic types of discharge tubes or lamps (details of electron-optical arrangements or of ion traps H 01 J 3/00)

Main electrodes

Liquid electrodes, e.g. liquid cathode

characterised by material

Containers for liquid-pool electrodes; Arrangement or mounting thereof

Positioning or moving the cathode spot on the surface of a liquid-pool cathode

Cooling, heating, circulating, filtering, or controlling level of liquid in a liquid-pool electrode

Cathodes having mercury or liquid alkali metal deposited on the cathode surface during operation of the tube

Solid thermionic cathodes

characterised by the material

142

with alkaline-earth metal oxides, or such oxides used in conjunction with reducing agents, as an emissive material [6]

144

with other metal oxides as an emissive material [6]

146

with metals or alloys as an emissive material [6]

148

with compounds having metallic conductive properties, e.g. lanthanum boride, as an emissive material [6]

Cathodes heated directly by an electric current

characterised by the shape

Supports; Vibration-damping arrangements

Cathodes heated indirectly by an electric current; Cathodes heated by electron or ion bombardment

Heaters (filaments for incandescent lamps H 01 K 1/02)

Insulating layer or body located between heater and emissive material

Supports for the emissive material

Dispenser-type cathodes, e.g. L-cathode

Cold cathodes, e.g. field-emissive cathode

Secondary-electron-emitting electrodes (H 01 J 1/35 takes precedence; luminescent screens H 01 J 1/62; charge-storage screens in general H 01 J 1/78; charge-storage screens using secondary emission for image tubes H 01 J 29/41; dynodes for secondary-emission tubes H 01 J 43/10; secondary-emission detectors for measurement of nuclear or X-radiation G 01 T 1/28)

Photo-emissive cathodes (H 01 J 1/35 takes precedence; photoelectric screens H 01 J 1/78)

Electrodes exhibiting both secondary emission and photo-emission

Solid anodes; Solid auxiliary anodes for maintaining a discharge

characterised by the material

forming part of the envelope of the tube or lamp

Cooling of anodes (cooling rotary anodes H 01 J 1/44); Heating of anodes

Rotary anodes; Arrangements for rotating anodes; Cooling rotary anodes

Control electrodes, e.g. grid (for igniting arrangements H 01 J 7/30); Auxiliary electrodes (auxiliary anodes for maintaining a discharge H 01 J 1/36)

characterised by the material

Magnetic means for controlling the discharge

Screens for shielding (screens acting as control electrodes H 01 J 1/46); Guides for influencing the discharge; Masks interposed in the electron stream

Electrodes intimately associated with a screen on or from which an image or pattern is formed, picked-up, converted, or stored

Screens on or from which an image or pattern is formed, picked-up, converted, or stored; Luminescent coatings on vessels

acting as light valves by shutter operation, e.g. for eidophor

acting by discolouration, e.g. halide screen

Incandescent screens

Luminescent screens; Selection of materials for luminescent coatings on vessels

characterised by the luminescent material (luminescent materials C 09 K 11/00)

characterised by the binder or adhesive for securing the luminescent material to its support

Supports for luminescent material (vessels H 01 J 5/02)

with superimposed luminescent layers

with protective, conductive, or reflective layers

with luminescent material discontinuously arranged, e.g. in dots or lines

with adjacent dots or lines of different luminescent material

provided with permanent marks or references

Photoelectric screens; Charge-storage screens

Mounting, supporting, spacing, or insulating of electrodes or of electrode assemblies

Insulation between electrodes or supports within the vacuum space (leading-in conductors H 01 J 5/46)

Mountings for the electrode assembly as a whole

Mountings for individual electrodes (for directly-heated cathodes H 01 J 1/15)

Spacing members extending to the envelope

without fixed connection between spacing member and envelope

Details of electron-optical or ion-optical arrangements or of ion traps common to two or more basic types of discharge tubes or lamps

Electron guns

Ion guns

two or more guns being arranged in a single vacuum space, e.g. for plural-ray tubes (H 01 J 3/07 takes precedence) [2]

Arrangements for controlling convergence of a plurality of beams [2]

Arrangements for controlling intensity of ray or beam (H 01 J 3/02, H 01 J 3/04 take precedence)

Arrangements for centering ray or beam (H 01 J 3/02, H 01 J 3/04 take precedence)

Arrangements for controlling cross-section of ray or beam; Arrangements for correcting aberration of beam, e.g. due to lenses (H 01 J 3/02, H 01 J 3/04 take precedence)

Arrangements for focusing or reflecting ray or beam (H 01 J 3/02, H 01 J 3/04 take precedence)

Mirrors

Electrostatic lenses

Magnetic lenses

using electromagnetic means only

using permanent magnets only

Arrangements for deflecting ray or beam (circuit arrangements for producing sawtooth pulses or other deflecting voltages or currents H 03 K)

along one straight line or along two perpendicular straight lines

by electric fields only

by magnetic fields only

along a circle, spiral, or rotating radial line

Arrangements for controlling the ray or beam after passing the main deflection system, e.g. for post-acceleration or post-concentration

Mounting, supporting, spacing, or insulating electron-optical or ion-optical arrangements

Traps for removing or diverting unwanted particles, e.g. negative ions, fringing electrons; Arrangements for velocity or mass selection

Details relating to vessels or to leading-in conductors common to two or more basic types of discharge tubes or lamps

Vessels; Containers; Shields associated therewith; Vacuum locks

Arrangements for preventing or mitigating effects of implosion of vessels or containers [2]

Vessels or containers characterised by the material thereof (selection of the material of the coating H 01 J 5/08)

Vessels or containers specially adapted for operation at high tension, e.g. by improved potential distribution over surface of vessel

provided with coatings on the walls thereof; Selection of materials for the coatings (luminescent coatings H 01 J 1/62)

on internal surfaces

Double-wall vessels or containers

Dismountable vessels or containers, e.g. for replacing cathode heater

Optical or photographic arrangements structurally combined with the vessel (luminescent coatings H 01 J 1/62)

Windows permeable to X-rays, gamma-rays, or particles

Seals between parts of vessels

Vacuum-tight joints between parts of vessel

between insulating parts of vessel

between insulating and conductive parts of vessel

between conductive parts of vessel

using packing material, e.g. sealing liquid or elastic insert

Seals for leading-in conductors

for an individual conductor (pinched-stem seals H 01 J 5/38; end-disc seals H 01 J 5/40; annular seals H 01 J 5/44)

using intermediate part

Pinched-stem or analogous seals

End-disc seals, e.g. flat header

using intermediate part

Annular seals disposed between the ends of the vessel

Leading-in conductors

Means forming part of the tube or lamp for the purpose of supporting it (asociated with electrical connecting means H 01 J 5/50)

Means forming part of the tube or lamp for the purpose of providing electrical connection to it (electric coupling devices comprising a holder adapted for supporting a tube or lamp and not forming part of the tube or lamp H 01 R 33/00)

directly applied to, or forming part of, the vessel

supported by a separate part, e.g. base

Shape of the separate part

Means for fastening the separate part to the vessel, e.g. by cement

for fastening by mechanical means

Connection of wires protruding from the vessel to connectors carried by the separate part

H01J 7/00 - H01J 13/58