GB1218692A - Colour cathode ray tube having a shadow mask - Google Patents

Colour cathode ray tube having a shadow mask

Info

Publication number
GB1218692A
GB1218692A GB21087/69A GB2108769A GB1218692A GB 1218692 A GB1218692 A GB 1218692A GB 21087/69 A GB21087/69 A GB 21087/69A GB 2108769 A GB2108769 A GB 2108769A GB 1218692 A GB1218692 A GB 1218692A
Authority
GB
United Kingdom
Prior art keywords
shadow mask
rim
ray tube
cathode ray
april
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
GB21087/69A
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.)
GTE Sylvania Inc
Original Assignee
Sylvania Electric Products Inc
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 Sylvania Electric Products Inc filed Critical Sylvania Electric Products Inc
Publication of GB1218692A publication Critical patent/GB1218692A/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
    • H01J29/02—Electrodes; Screens; Mounting, supporting, spacing or insulating thereof
    • H01J29/06—Screens for shielding; Masks interposed in the electron stream
    • H01J29/07—Shadow masks for colour television tubes
    • H01J29/073—Mounting arrangements associated with shadow masks
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J2229/00—Details of cathode ray tubes or electron beam tubes
    • H01J2229/07—Shadow masks
    • H01J2229/0722—Frame

Landscapes

  • Electrodes For Cathode-Ray Tubes (AREA)

Abstract

1,218,692. Colour television tubes. SYLVANIA ELECTRIC PRODUCTS Inc. 24 April, 1969 [24 April, 1968], No. 21087/69. Heading H1D. A shadow mask 16 is secured to a frame comprising a rectangular rim 34 and an inwardly-facing flange 19 adapted to prevent over-scanning, and the rim is provided on at least three sides with slots 40 each adapted to accommodate a hinge 36 on a mounting member secured at one end to the rim and at the other end to a spring 26 which engages a stud 42 on the wall of the envelope. Preferably there are three supporting systems, one in the top centre portion and the other two equally spaced below the central horizontal axis of the mask (Fig. 3, not shown).
GB21087/69A 1968-04-24 1969-04-24 Colour cathode ray tube having a shadow mask Expired GB1218692A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US72383068A 1968-04-24 1968-04-24
US72383268A 1968-04-24 1968-04-24

Publications (1)

Publication Number Publication Date
GB1218692A true GB1218692A (en) 1971-01-06

Family

ID=27110875

Family Applications (2)

Application Number Title Priority Date Filing Date
GB21088/69A Expired GB1218693A (en) 1968-04-24 1969-04-24 Colour cathode ray tube having a shadow mask
GB21087/69A Expired GB1218692A (en) 1968-04-24 1969-04-24 Colour cathode ray tube having a shadow mask

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB21088/69A Expired GB1218693A (en) 1968-04-24 1969-04-24 Colour cathode ray tube having a shadow mask

Country Status (4)

Country Link
US (2) US3524096A (en)
BE (1) BE731993A (en)
DE (1) DE1919720A1 (en)
GB (2) GB1218693A (en)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3524096A (en) * 1968-04-24 1970-08-11 Helen C Haas Color cathode ray tube having shadow mask frame formed to accommodate a support system
US3524974A (en) * 1968-08-13 1970-08-18 Sylvania Electric Prod Shadow mask supporting structure having thermal expansion correction means
US3573526A (en) * 1968-12-23 1971-04-06 Sylvania Electrics Products In Locating device for temperature compensated parallax barrier supporting system
JPS5433106B1 (en) * 1970-04-30 1979-10-18
US3600622A (en) * 1970-11-20 1971-08-17 Sylvania Electric Prod Locating device for temperature compensated parallax barrier supporting system
US3600623A (en) * 1970-11-20 1971-08-17 Sylvania Electric Prod Locating device for temperature compensated parallax barrier supporting system
US3600621A (en) * 1970-11-20 1971-08-17 Sylvania Electric Prod Locating device for temperature compensated parallax barrier supporting system
US3772555A (en) * 1972-03-30 1973-11-13 Gte Sylvania Inc Color cathode ray tube of the shadow mask variety
US4193016A (en) * 1977-10-04 1980-03-11 Zenith Radio Corporation Electron gun shield cup providing tube evacuation bypass vents
US4467242A (en) * 1982-10-18 1984-08-21 Rca Corporation Color selection electrode mounting structure having an off-set washer
US4839556A (en) * 1983-02-25 1989-06-13 Rca Licensing Corporation Cathode-ray tube having an improved shadow mask contour
US4547695A (en) * 1983-03-03 1985-10-15 Tektronix, Inc. CRT Shadow mask assembly
KR20010096031A (en) * 2000-04-17 2001-11-07 김순택 Support member for mask frame of CPT

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL216226A (en) * 1956-04-17
US3343024A (en) * 1964-11-25 1967-09-19 Nat Video Corp Cathode ray tube with improved shadow mask mounting spring arrangement
US3330980A (en) * 1965-07-16 1967-07-11 Rca Corp Shadow mask mounted with bi-metallic sections connected by expansible loop
US3345530A (en) * 1966-02-28 1967-10-03 Sylvania Electric Prod Colored television tube with a shadow mask supporting frame having inward ledge to shut off beam over-scan
US3377493A (en) * 1967-02-15 1968-04-09 Admiral Corp Clip for mounting peripheral electron shield on shadow mask of color television tube, provided with contact spring to tube inner coating
US3524096A (en) * 1968-04-24 1970-08-11 Helen C Haas Color cathode ray tube having shadow mask frame formed to accommodate a support system

Also Published As

Publication number Publication date
US3449612A (en) 1969-06-10
DE1919720A1 (en) 1969-11-06
BE731993A (en) 1969-10-01
GB1218693A (en) 1971-01-06
US3524096A (en) 1970-08-11

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