GB672672A - Improvements in or relating to cathode-ray tubes - Google Patents

Improvements in or relating to cathode-ray tubes

Info

Publication number
GB672672A
GB672672A GB22058/50A GB2205850A GB672672A GB 672672 A GB672672 A GB 672672A GB 22058/50 A GB22058/50 A GB 22058/50A GB 2205850 A GB2205850 A GB 2205850A GB 672672 A GB672672 A GB 672672A
Authority
GB
United Kingdom
Prior art keywords
cone
glass
coil
sealing
window
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
GB22058/50A
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 Electrical Industries Ltd
Original Assignee
Philips Electrical 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 Philips Electrical Industries Ltd filed Critical Philips Electrical Industries Ltd
Publication of GB672672A publication Critical patent/GB672672A/en
Expired 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
    • H01J9/26—Sealing together parts of vessels
    • H01J9/263—Sealing together parts of vessels specially adapted for cathode-ray tubes
    • 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
    • H01J5/26—Vacuum-tight joints between parts of vessel between insulating and conductive parts of vessel
    • 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
    • H01J9/26—Sealing together parts of vessels
    • 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
    • H01J2893/0041—Direct connection between insulating and metal elements, in particular via glass material
    • H01J2893/0043—Glass-to-metal or quartz-to-metal, e.g. by soldering

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Joining Of Glass To Other Materials (AREA)
  • Manufacture Of Electron Tubes, Discharge Lamp Vessels, Lead-In Wires, And The Like (AREA)

Abstract

672,672. Glass-to-metal seals. PHILIPS ELECTRICAL INDUSTRIES, Ltd. Sept. 7, 1950 [Sept. 10, 1949], No. 22058/50. Drawings to Specification. Class 36. [Also in Group XL (a)] Sealing of the glass window of a cathode-ray tube to the open end of a metallic conical envelope is effected by placing the window on top of the cone when inverted and progressively heating the cone by a high-frequency coil surrounding it and slowly raised to the wide end of the cone so that the glass is uniformly heated by radiation from the cone and by heat radiated or reflected from a metal or insulating screen surmounting it, sealing of the glass to the cone taking place when the coil reaches the top edge of the cone. Alternatively the cone may be lowered through the coil. The upper side of the screen may be reflecting to reduce radiation, may be heated by a burner and rotated, and may be slotted to avoid induced heating by the coil. The cone is held in a holder and may be open at the base and receive a plug admitting an inert gas under pressure into the cone to keep the window floating at its molten edge. The coil may. be gradually lowered after sealing to allow cooling, or the tube uniformly cooled down in a furnace. A glass tube carrying the electrode assembly is finally sealed to the narrow end of the cone.
GB22058/50A 1949-09-10 1950-09-07 Improvements in or relating to cathode-ray tubes Expired GB672672A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL284602X 1949-09-10

Publications (1)

Publication Number Publication Date
GB672672A true GB672672A (en) 1952-05-28

Family

ID=19782449

Family Applications (1)

Application Number Title Priority Date Filing Date
GB22058/50A Expired GB672672A (en) 1949-09-10 1950-09-07 Improvements in or relating to cathode-ray tubes

Country Status (7)

Country Link
US (1) US2598286A (en)
BE (1) BE498003A (en)
CH (1) CH284602A (en)
DE (1) DE833233C (en)
FR (1) FR1024421A (en)
GB (1) GB672672A (en)
NL (1) NL72675C (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE971358C (en) * 1953-05-12 1959-01-15 Glaswerk Wertheim Geraete Fuer Method for fusing the picture window with the glass tube of an electron beam tube
US2751480A (en) * 1953-09-01 1956-06-19 Budd Co Induction heating apparatus and method of heating extensive surface areas
US2933855A (en) * 1956-01-25 1960-04-26 Rue Albert D La Apparatus for glass to metal sealing
NL228634A (en) * 1957-06-18
US3183361A (en) * 1959-08-07 1965-05-11 Texas Instruments Inc Method of making glass sealed electric circuit devices and article resulting therefrom
US3472640A (en) * 1966-09-08 1969-10-14 Rca Corp Glass seal manufacture
US3472413A (en) * 1966-09-08 1969-10-14 Rca Corp Glass seal manufacture
US4284867A (en) * 1979-02-09 1981-08-18 General Instrument Corporation Chemical vapor deposition reactor with infrared reflector

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1301714A (en) * 1913-09-09 1919-04-22 Karl Kueppers Method of and apparatus for forming glass tubes.
US2048556A (en) * 1934-01-04 1936-07-21 Gen Electric Glass-to-metal seal
US2359501A (en) * 1937-11-27 1944-10-03 Gen Electric Sealing-in apparatus
US2296307A (en) * 1940-04-30 1942-09-22 Rca Corp Method of making glass-to-metal seals

Also Published As

Publication number Publication date
DE833233C (en) 1952-03-06
US2598286A (en) 1952-05-27
BE498003A (en)
NL72675C (en)
CH284602A (en) 1952-07-31
FR1024421A (en) 1953-04-01

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