FR2017710A1 - Sinter glass base prodn for high-vacuum - tubes - Google Patents

Sinter glass base prodn for high-vacuum - tubes

Info

Publication number
FR2017710A1
FR2017710A1 FR6930415A FR6930415A FR2017710A1 FR 2017710 A1 FR2017710 A1 FR 2017710A1 FR 6930415 A FR6930415 A FR 6930415A FR 6930415 A FR6930415 A FR 6930415A FR 2017710 A1 FR2017710 A1 FR 2017710A1
Authority
FR
France
Prior art keywords
tube
prodn
tubes
vacuum
glass base
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.)
Withdrawn
Application number
FR6930415A
Other languages
French (fr)
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.)
BBC Brown Boveri AG Switzerland
BBC Brown Boveri France SA
Original Assignee
Brown Boveri und Cie AG Switzerland
BBC Brown Boveri France SA
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 Brown Boveri und Cie AG Switzerland, BBC Brown Boveri France SA filed Critical Brown Boveri und Cie AG Switzerland
Publication of FR2017710A1 publication Critical patent/FR2017710A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J9/00—Apparatus or processes specially adapted for the manufacture, installation, removal, maintenance of electric discharge tubes, discharge lamps, or parts thereof; Recovery of material from discharge tubes or lamps
    • H01J9/24—Manufacture or joining of vessels, leading-in conductors or bases
    • H01J9/32—Sealing leading-in conductors
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J9/00—Apparatus or processes specially adapted for the manufacture, installation, removal, maintenance of electric discharge tubes, discharge lamps, or parts thereof; Recovery of material from discharge tubes or lamps
    • H01J9/24—Manufacture or joining of vessels, leading-in conductors or bases
    • H01J9/30—Manufacture of bases

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Compressor (AREA)
  • Powder Metallurgy (AREA)
  • Re-Forming, After-Treatment, Cutting And Transporting Of Glass Products (AREA)

Abstract

Metallic bushings and a glass tube (pump tube) are secured to prevent movement and fused together in a sinter mould, with glass powder, to a tube base. A metal spike (Ni), contained in a central clearance of a sinter mould part, has a free part slightly reduced towards its end and is inside the pump tube to prevent the inside wall of the tube distorting. The spike material has a coefficient of thermal expansion > the glass used for the pump tube (pref. 1.2 to 4 times).
FR6930415A 1968-09-10 1969-09-08 Sinter glass base prodn for high-vacuum - tubes Withdrawn FR2017710A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH1351468A CH498781A (en) 1968-09-10 1968-09-10 Process for the production of glass feet for tubes

Publications (1)

Publication Number Publication Date
FR2017710A1 true FR2017710A1 (en) 1970-05-22

Family

ID=4393070

Family Applications (1)

Application Number Title Priority Date Filing Date
FR6930415A Withdrawn FR2017710A1 (en) 1968-09-10 1969-09-08 Sinter glass base prodn for high-vacuum - tubes

Country Status (3)

Country Link
CH (1) CH498781A (en)
DE (1) DE1931332B2 (en)
FR (1) FR2017710A1 (en)

Also Published As

Publication number Publication date
CH498781A (en) 1970-11-15
DE1931332B2 (en) 1975-09-25
DE1931332A1 (en) 1970-07-09

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Legal Events

Date Code Title Description
ST Notification of lapse