GB670430A - Improvements relating to the manufacture of cathode ray tubes - Google Patents

Improvements relating to the manufacture of cathode ray tubes

Info

Publication number
GB670430A
GB670430A GB474749A GB474749A GB670430A GB 670430 A GB670430 A GB 670430A GB 474749 A GB474749 A GB 474749A GB 474749 A GB474749 A GB 474749A GB 670430 A GB670430 A GB 670430A
Authority
GB
United Kingdom
Prior art keywords
glass
expansion
coefficient
ray tubes
manufacture
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
GB474749A
Inventor
Ronald Henry Colborne
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.)
Electrical and Musical Industries Ltd
Original Assignee
Electrical and Musical 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
Application filed by Electrical and Musical Industries Ltd filed Critical Electrical and Musical Industries Ltd
Priority to GB474749A priority Critical patent/GB670430A/en
Publication of GB670430A publication Critical patent/GB670430A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J29/00—Details of cathode-ray tubes or of electron-beam tubes of the types covered by group H01J31/00
    • H01J29/92—Means forming part of the tube for the purpose of providing electrical connection to it
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C27/00—Joining pieces of glass to pieces of other inorganic material; Joining glass to glass other than by fusing
    • C03C27/04—Joining glass to metal by means of an interlayer
    • C03C27/042—Joining glass to metal by means of an interlayer consisting of a combination of materials selected from glass, glass-ceramic or ceramic material with metals, metal oxides or metal salts
    • C03C27/044—Joining glass to metal by means of an interlayer consisting of a combination of materials selected from glass, glass-ceramic or ceramic material with metals, metal oxides or metal salts of glass, glass-ceramic or ceramic material only

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Glass Compositions (AREA)

Abstract

670,430. Cathode-ray tubes. ELECTRIC & MUSICAL INDUSTRIES, Ltd. May 1, 1947 [June 20, 1946], No. 4747/49. Divided out of 670,411. Class 39 (i). A cathode-ray tube has at least a substantial part of its envelope formed of borosilicate glass having a coefficient of expansion of 33- 35 x 10<SP>-7</SP> approximately, and metal leads having a coefficient of expansion of the order of 49Î10<SP>-7</SP>connected to electrodes sealed in a disc-like glass seal formed of glass having a coefficient of expansion of approximately 47 x 10<SP>-7</SP> or higher, the seal being sealed in the first glass-part by means of at least one additional part of glass having an intermediate coefficient of expansion. In an example the metal and glasses used are identical with those used in the example described in Specification 670,411 which is referred to. Reference has been directed by the Comptroller to Specification 420,634 and to the document " Technical Data on Chance Sealing Glasses (Chance Bros., Ltd., Smethwick, 1944)."
GB474749A 1946-06-20 1946-06-20 Improvements relating to the manufacture of cathode ray tubes Expired GB670430A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB474749A GB670430A (en) 1946-06-20 1946-06-20 Improvements relating to the manufacture of cathode ray tubes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB474749A GB670430A (en) 1946-06-20 1946-06-20 Improvements relating to the manufacture of cathode ray tubes

Publications (1)

Publication Number Publication Date
GB670430A true GB670430A (en) 1952-04-16

Family

ID=9783016

Family Applications (1)

Application Number Title Priority Date Filing Date
GB474749A Expired GB670430A (en) 1946-06-20 1946-06-20 Improvements relating to the manufacture of cathode ray tubes

Country Status (1)

Country Link
GB (1) GB670430A (en)

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