GB635444A - Device for making a vacuum-tight connection between two metallic parts of different electric potential - Google Patents

Device for making a vacuum-tight connection between two metallic parts of different electric potential

Info

Publication number
GB635444A
GB635444A GB10339/48A GB1033948A GB635444A GB 635444 A GB635444 A GB 635444A GB 10339/48 A GB10339/48 A GB 10339/48A GB 1033948 A GB1033948 A GB 1033948A GB 635444 A GB635444 A GB 635444A
Authority
GB
United Kingdom
Prior art keywords
glass
metallic parts
vacuum
making
electric potential
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
GB10339/48A
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.)
BBC Brown Boveri AG Germany
BBC Brown Boveri France SA
Original Assignee
Brown Boveri und Cie AG Germany
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 Germany, BBC Brown Boveri France SA filed Critical Brown Boveri und Cie AG Germany
Publication of GB635444A publication Critical patent/GB635444A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • H01J5/20—Seals between parts of vessels
    • H01J5/22—Vacuum-tight joints between parts of vessel
    • H01J5/28—Vacuum-tight joints between parts of vessel between conductive parts of vessel
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J2893/00—Discharge tubes and lamps
    • H01J2893/0033—Vacuum connection techniques applicable to discharge tubes and lamps
    • H01J2893/0037—Solid sealing members other than lamp bases
    • H01J2893/0044—Direct connection between two metal elements, in particular via material a connecting material

Landscapes

  • Image-Pickup Tubes, Image-Amplification Tubes, And Storage Tubes (AREA)

Abstract

635,444. Glass-metal seals. AKT.-GES. BROWN, BOVERI, & CIE. April 14, 1948, No. 10339. Convention date, April 25, 1947. [Class 36] Two metal parts are sealed together and insulated from each other by means of a glass flux, the metallic parts consisting of concentric sleeves, the outer one f of which has a crimped edge h for the reception of the glass flux i in which the edge of the inner sleeve e is fused. The outer sleeve f preferably has a coefficient of expansion higher than that of the glass i, thus compressing the glass on cooling. The inner part of the groove h is short and can expand freely, thus reducing the tensile stresses on cooling. The seal may be used in a mercury vapour converter, the outer sleeve f being welded to the converter casing a at g and the inner sleeve e being welded to the cathode floor plate c at d.
GB10339/48A 1947-04-25 1948-04-14 Device for making a vacuum-tight connection between two metallic parts of different electric potential Expired GB635444A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH635444X 1947-04-25

Publications (1)

Publication Number Publication Date
GB635444A true GB635444A (en) 1950-04-12

Family

ID=4525058

Family Applications (1)

Application Number Title Priority Date Filing Date
GB10339/48A Expired GB635444A (en) 1947-04-25 1948-04-14 Device for making a vacuum-tight connection between two metallic parts of different electric potential

Country Status (1)

Country Link
GB (1) GB635444A (en)

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