GB1458027A - Electric discharge vacuum tube - Google Patents

Electric discharge vacuum tube

Info

Publication number
GB1458027A
GB1458027A GB5946173A GB5946173A GB1458027A GB 1458027 A GB1458027 A GB 1458027A GB 5946173 A GB5946173 A GB 5946173A GB 5946173 A GB5946173 A GB 5946173A GB 1458027 A GB1458027 A GB 1458027A
Authority
GB
United Kingdom
Prior art keywords
groove
support
screen
metal
vacuum tube
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
GB5946173A
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.)
Philips Electronics UK Ltd
Original Assignee
Philips Electronic and Associated Industries 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
Priority claimed from DE19732300630 external-priority patent/DE2300630C3/en
Application filed by Philips Electronic and Associated Industries Ltd filed Critical Philips Electronic and Associated Industries Ltd
Publication of GB1458027A publication Critical patent/GB1458027A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J35/00—X-ray tubes
    • H01J35/02—Details
    • H01J35/16—Vessels; Containers; Shields associated therewith
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J19/00—Details of vacuum tubes of the types covered by group H01J21/00
    • H01J19/42—Mounting, supporting, spacing, or insulating of electrodes or of electrode assemblies
    • H01J19/44—Insulation between electrodes or supports within the vacuum space

Landscapes

  • Vessels, Lead-In Wires, Accessory Apparatuses For Cathode-Ray Tubes (AREA)
  • Measurement Of Radiation (AREA)
  • X-Ray Techniques (AREA)

Abstract

1458027 X-ray tubes; neutron generators PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd 21 Dec 1973 [8 Jan 1973] 59461/73 Heading H1D A high voltage vacuum tube (e.g. X-ray tube or neutron generator) comprises an anode and a cathode surrounded by a metal sleeve 1, the cathode being mounted on a metal support 31 joined to the sleeve 1 by insulator 2 with groove 22 to accommodate metal screen 32 which prevents flash-overs originating from the lower edge of the support. Emitted electrons charge the side walls of the groove and decrease the field at the edge of screen 32. Advantageously, the groove may also be metallized and connected to support 31 or screen 32 (both at the same potential). If metal support 31 extends sufficiently far into the groove, screen 32 may be dispensed with, then the metallisation of the groove must be provided. The insulator surface may be corrugated with the groove in a crest. The vacuum joint between support 31 and projection 21 may be by soldering to apremetallization. An externally heated soldering joint to accommodate differences in thermal expansion coefficients is preferred.
GB5946173A 1973-01-08 1973-12-21 Electric discharge vacuum tube Expired GB1458027A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19732300630 DE2300630C3 (en) 1973-01-08 Cathode arrangement for a high voltage vacuum tube

Publications (1)

Publication Number Publication Date
GB1458027A true GB1458027A (en) 1976-12-08

Family

ID=5868449

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5946173A Expired GB1458027A (en) 1973-01-08 1973-12-21 Electric discharge vacuum tube

Country Status (5)

Country Link
US (1) US3911306A (en)
JP (1) JPS5543585B2 (en)
CA (1) CA1001205A (en)
FR (1) FR2213583B1 (en)
GB (1) GB1458027A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111554556A (en) * 2020-05-18 2020-08-18 上海联影医疗科技有限公司 X-ray tube and medical imaging apparatus

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2448497C3 (en) * 1974-10-11 1986-02-13 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt X-ray source with an X-ray tube having an evacuated cylindrical metal part and with at least one connection part
DE2506841C2 (en) * 1975-02-18 1986-07-03 Philips Patentverwaltung Gmbh, 2000 Hamburg High voltage vacuum tube
DE3142281A1 (en) * 1981-10-24 1983-05-05 Philips Patentverwaltung Gmbh, 2000 Hamburg X-RAY TUBES WITH A METAL PART AND AN ELECTRODE LEADING HIGH VOLTAGE POSITIVE TO THE METAL PART
CH665920A5 (en) * 1985-03-28 1988-06-15 Comet Elektron Roehren X-ray tube WITH THE ANODE AND CATHODE SURROUNDING CYLINDRICAL METAL PART.
EP0590418B1 (en) * 1992-10-02 1996-08-14 Licentia Patent-Verwaltungs-GmbH High voltage tube
US7020244B1 (en) * 2004-12-17 2006-03-28 General Electric Company Method and design for electrical stress mitigation in high voltage insulators in X-ray tubes
US7702077B2 (en) * 2008-05-19 2010-04-20 General Electric Company Apparatus for a compact HV insulator for x-ray and vacuum tube and method of assembling same

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2332426A (en) * 1941-05-03 1943-10-19 Gen Electric X Ray Corp X-ray tube

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111554556A (en) * 2020-05-18 2020-08-18 上海联影医疗科技有限公司 X-ray tube and medical imaging apparatus
CN111554556B (en) * 2020-05-18 2023-06-27 上海联影医疗科技股份有限公司 X-ray tube and medical imaging apparatus

Also Published As

Publication number Publication date
FR2213583A1 (en) 1974-08-02
CA1001205A (en) 1976-12-07
JPS5543585B2 (en) 1980-11-07
DE2300630B2 (en) 1976-12-16
US3911306A (en) 1975-10-07
JPS49104559A (en) 1974-10-03
DE2300630A1 (en) 1974-07-18
FR2213583B1 (en) 1976-11-26

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee