GB651061A - Improvements in and relating to electron discharge devices - Google Patents

Improvements in and relating to electron discharge devices

Info

Publication number
GB651061A
GB651061A GB24365/48A GB2436548A GB651061A GB 651061 A GB651061 A GB 651061A GB 24365/48 A GB24365/48 A GB 24365/48A GB 2436548 A GB2436548 A GB 2436548A GB 651061 A GB651061 A GB 651061A
Authority
GB
United Kingdom
Prior art keywords
envelope
coating
glass
anode
indium
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB24365/48A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Metropolitan Vickers Electrical Co Ltd
Original Assignee
Metropolitan Vickers Electrical Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Metropolitan Vickers Electrical Co Ltd filed Critical Metropolitan Vickers Electrical Co Ltd
Publication of GB651061A publication Critical patent/GB651061A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
    • H01H33/66—Vacuum switches
    • H01H33/662—Housings or protective screens
    • H01H33/66207—Specific housing details, e.g. sealing, soldering or brazing
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B1/00—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J5/00—Details relating to vessels or to leading-in conductors common to two or more basic types of discharge tubes or lamps
    • H01J5/02—Vessels; Containers; Shields associated therewith; Vacuum locks
    • H01J5/06—Vessels or containers specially adapted for operation at high tension, e.g. by improved potential distribution over surface of vessel
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J5/00—Details relating to vessels or to leading-in conductors common to two or more basic types of discharge tubes or lamps
    • H01J5/02—Vessels; Containers; Shields associated therewith; Vacuum locks
    • H01J5/08—Vessels; Containers; Shields associated therewith; Vacuum locks provided with coatings on the walls thereof; Selection of materials for the coatings
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
    • H01H33/66—Vacuum switches
    • H01H33/662—Housings or protective screens
    • H01H33/66207—Specific housing details, e.g. sealing, soldering or brazing
    • H01H2033/66223—Details relating to the sealing of vacuum switch housings
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
    • H01H33/66—Vacuum switches
    • H01H33/662—Housings or protective screens
    • H01H33/66261—Specific screen details, e.g. mounting, materials, multiple screens or specific electrical field considerations
    • H01H2033/66276—Details relating to the mounting of screens in vacuum switches

Landscapes

  • Vessels, Lead-In Wires, Accessory Apparatuses For Cathode-Ray Tubes (AREA)

Abstract

651,061. Discharge apparatus. METROPOLITAN-VICKERS ELECTRICAL CO., Ltd. Sept. 16, 1948, No. 24365. Convention date, Sept. 20,1947. [Class 39 (i)] An electron discharge device, such as an X-ray tube, comprising at least an anode and a cathode mounted within a glass envelope has an electrically conductive coating of a material containing indium provided on the inner surface of the envelope to prevent the accumulation of wall charges. The coating may be provided by spraying a solution of an indium compound, for example indium chloride in commercial alcohol in equal proportions by weight, the sensitivity of the coating being determined by selection of the proportional ratio of solvent and indium compound and/or by selection of the temperature of the portion of the envelope being sprayed ; the sensitivity may thus be varied between about 25 and 500 ohms. per square. The glass is preferably maintained at a temperature of about 500‹ C. whilst being sprayed. The X-ray tube shown in Fig. 1 comprises an anode 20 and cathode 13 in an envelope comprising glass sections 15 joined by metallic connector sleeves 18 which support focusing electrodes 21. The coating 22 of indium compound may be applied to the inner surface of all the glass envelope portions, or it may be sufficient to apply it only to the envelope portions adjacent the anode.
GB24365/48A 1947-09-20 1948-09-16 Improvements in and relating to electron discharge devices Expired GB651061A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US775256A US2516663A (en) 1947-09-20 1947-09-20 Conductive coating on glass

Publications (1)

Publication Number Publication Date
GB651061A true GB651061A (en) 1951-03-07

Family

ID=25103824

Family Applications (1)

Application Number Title Priority Date Filing Date
GB24365/48A Expired GB651061A (en) 1947-09-20 1948-09-16 Improvements in and relating to electron discharge devices

Country Status (3)

Country Link
US (1) US2516663A (en)
FR (1) FR970878A (en)
GB (1) GB651061A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU569728B2 (en) * 1983-03-09 1988-02-18 Manon, G. Glass brick

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2564987A (en) * 1947-09-03 1951-08-21 Corning Glass Works Electrically conducting coating on glass and other ceramic bodies
US2703373A (en) * 1949-06-21 1955-03-01 Gen Electric X-ray tube
US2694761A (en) * 1949-07-02 1954-11-16 Pittsburgh Plate Glass Co Method of producing electroconductive articles
US2694649A (en) * 1949-07-02 1954-11-16 Pittsburgh Plate Glass Co Indium oxide coating on a silicious base
US2612615A (en) * 1949-07-22 1952-09-30 Gen Electric Cathode for ionization detection devices
US2894858A (en) * 1950-12-01 1959-07-14 Pittsburgh Plate Glass Co Method of producing transparent electroconductive articles
US2769778A (en) * 1951-09-05 1956-11-06 Nat Res Dev Method of making transparent conducting films by cathode sputtering
US2717840A (en) * 1952-02-25 1955-09-13 Fox Wells And Company Method of forming a coating of metal on glass
US2833953A (en) * 1953-04-13 1958-05-06 Machlett Lab Inc High voltage electron tube
US2845559A (en) * 1953-10-09 1958-07-29 Westinghouse Electric Corp Structure for high voltage tube
US2871402A (en) * 1954-09-20 1959-01-27 Westinghouse Electric Corp Split section high voltage tube
US2836748A (en) * 1956-04-20 1958-05-27 Dunlee Corp Electron discharge device
US3072556A (en) * 1958-02-03 1963-01-08 Cons Electrodynamics Corp Method of making electrolytic measuring cell
US3048682A (en) * 1961-04-11 1962-08-07 Gen Electric Shield mounting arrangement for a vacuum circuit interrupter
GB1152336A (en) * 1965-08-30 1969-05-14 Sylvania Electric Prod Electrostatic Writing Tube and method of manufacture
US3729575A (en) * 1971-10-28 1973-04-24 Litton Systems Inc High voltage insulator having a thick film resistive coating
US3801808A (en) * 1973-01-31 1974-04-02 Gte Sylvania Inc Light source with rf interference shield
US7430278B2 (en) * 2004-07-09 2008-09-30 General Electric Company Insulation methods and arrangements for an X-ray generator
RU2418339C1 (en) * 2010-01-28 2011-05-10 Виктор Дмитриевич Бочков High-voltage electronic device

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1219961A (en) * 1914-07-20 1917-03-20 Gen Electric Means for indicating electrical characteristics of alternating currents.
GB350133A (en) * 1929-04-19 1931-06-11 C.H.F. Mueller Aktiengesellschaft
US2118795A (en) * 1931-09-21 1938-05-24 Corning Glass Works Insulator
US2284341A (en) * 1940-04-30 1942-05-26 Gen Electric Discharge device
US2413604A (en) * 1944-05-27 1946-12-31 Libbey Owens Ford Glass Co Method or process of evaporating metals

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU569728B2 (en) * 1983-03-09 1988-02-18 Manon, G. Glass brick

Also Published As

Publication number Publication date
US2516663A (en) 1950-07-25
FR970878A (en) 1951-01-10

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