GB698856A - Improvements in cathode-ray tubes - Google Patents

Improvements in cathode-ray tubes

Info

Publication number
GB698856A
GB698856A GB4655/52A GB465552A GB698856A GB 698856 A GB698856 A GB 698856A GB 4655/52 A GB4655/52 A GB 4655/52A GB 465552 A GB465552 A GB 465552A GB 698856 A GB698856 A GB 698856A
Authority
GB
United Kingdom
Prior art keywords
per cent
enamel
cone
cathode
feb
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
GB4655/52A
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 GB698856A publication Critical patent/GB698856A/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
    • H01J29/86—Vessels; Containers; Vacuum locks
    • H01J29/88—Vessels; Containers; Vacuum locks provided with coatings on the walls thereof; Selection of materials for the coatings

Landscapes

  • Glass Compositions (AREA)
  • Cathode-Ray Tubes And Fluorescent Screens For Display (AREA)
  • Vessels, Lead-In Wires, Accessory Apparatuses For Cathode-Ray Tubes (AREA)

Abstract

698,856. Enamels. PHILIPS ELECTRICAL INDUSTRIES, Ltd. Feb. 21, 1952 [Feb. 24, 1951], No. 4655/52. Class 56. [Also in Group XL (a)] An enamel suitable for coating the iron cone of a cathode-ray tube preferably consists of 69 per cent SiO 2 , 2.2 per cent Al 2 O 3 , 18.6 per cent Na 2 O, 8.7 per cent CaO, 0.5 per cent ZnO, and 1 per cent CoO, all by weight. The enamel is refractory having a melting point of from 800‹ C. to 1100‹ C., and is resistant to corrosion by acids or alkalies. The enamel is rendered conductive by mixing with pulverulent graphite, from 5 to 10 per cent by weight, preferably 7 to 49 per cent. The enamel and graphite composition is applied by spraying or by immersion of the cone, and the cone is heated in a furnace to about 1100‹ C. for about 3 minutes.
GB4655/52A 1951-02-24 1952-02-21 Improvements in cathode-ray tubes Expired GB698856A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL304524X 1951-02-24

Publications (1)

Publication Number Publication Date
GB698856A true GB698856A (en) 1953-10-21

Family

ID=19783435

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4655/52A Expired GB698856A (en) 1951-02-24 1952-02-21 Improvements in cathode-ray tubes

Country Status (7)

Country Link
US (1) US2699510A (en)
BE (1) BE509437A (en)
CH (1) CH304524A (en)
DE (1) DE909007C (en)
FR (1) FR1051773A (en)
GB (1) GB698856A (en)
NL (1) NL74555C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0118961A1 (en) * 1983-03-14 1984-09-19 Koninklijke Philips Electronics N.V. Electric discharge tube and method of manufacturing an electrically conductive layer on a wall portion of the envelope of such a tube

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2901380A (en) * 1956-10-12 1959-08-25 Electrofilm Inc Solid lubricant films having vitreous enamel binders
US2886476A (en) * 1956-10-19 1959-05-12 Du Pont Resistors
DE1163501B (en) * 1958-05-24 1964-02-20 Philips Patentverwaltung Graphite suspension for use as conductive inner coatings in electron beam tubes
US3348917A (en) * 1960-07-22 1967-10-24 Minnesota Mining & Mfg Glass containing dissolved carbon, methods of making and using, and obtaining graphite
NL7316104A (en) * 1973-11-26 1975-05-28 Philips Nv PROCEDURE FOR MANUFACTURING AN ELECTRICAL CONDUCTIVE LAYER ON AN INTERNAL WALL SECTION OF A CATHOD RAY TUBE AND A CATHOD RAY TUBE MANUFACTURED BY THIS PROCESS.
US4052641A (en) * 1975-03-14 1977-10-04 Corning Glass Works Electrically conductive coating in cathode ray tube
US4301041A (en) * 1979-10-22 1981-11-17 Zenith Radio Corporation Method and solution for conductive coating for use in cathode ray tubes
US5693259A (en) * 1991-10-04 1997-12-02 Acheson Industries, Inc. Coating compositions for glass surfaces or cathode ray tubes
FR2957970B1 (en) 2010-03-29 2013-01-11 Peugeot Citroen Automobiles Sa DEVICE FOR INJECTING AN EXHAUST LINE OF A GASEOUS REDUCING AGENT
FR2961557B1 (en) 2010-06-22 2014-01-24 Peugeot Citroen Automobiles Sa INJECTION STRATEGY IN AN EXHAUST LINE OF A SELECTIVE NITROGEN OXIDE REDUCING AGENT

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2151992A (en) * 1934-11-30 1939-03-28 Firm Of Fernseh Ag Wall coating for braun tubes
US2162391A (en) * 1935-04-18 1939-06-13 Firm Of Fernseh Ag Electron tube with high ohmic wall coatings
GB493602A (en) * 1935-11-05 1938-10-11 Schlesische Splegelglas Manufa Improvements in braun tubes for television
DE734114C (en) * 1936-11-20 1943-04-09 J D Riedel E De Haeen Ag Flask for Braun tubes for television purposes with a carbon layer formed from colloidal carbon solutions on the inner wall of the flask
US2254090A (en) * 1940-04-30 1941-08-26 Rca Corp Cathode ray tube envelope
US2376196A (en) * 1943-09-30 1945-05-15 Well Surveys Inc Ionization chamber

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0118961A1 (en) * 1983-03-14 1984-09-19 Koninklijke Philips Electronics N.V. Electric discharge tube and method of manufacturing an electrically conductive layer on a wall portion of the envelope of such a tube

Also Published As

Publication number Publication date
BE509437A (en)
FR1051773A (en) 1954-01-19
CH304524A (en) 1955-01-15
US2699510A (en) 1955-01-11
DE909007C (en) 1954-04-12
NL74555C (en)

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