GB841694A - Improvements in or relating to cathode ray tubes - Google Patents

Improvements in or relating to cathode ray tubes

Info

Publication number
GB841694A
GB841694A GB4376/57A GB437657A GB841694A GB 841694 A GB841694 A GB 841694A GB 4376/57 A GB4376/57 A GB 4376/57A GB 437657 A GB437657 A GB 437657A GB 841694 A GB841694 A GB 841694A
Authority
GB
United Kingdom
Prior art keywords
screen
mask
feb
frame member
spherical
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
GB4376/57A
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.)
Zenith Electronics LLC
Original Assignee
Zenith Radio Corp
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 Zenith Radio Corp filed Critical Zenith Radio Corp
Publication of GB841694A publication Critical patent/GB841694A/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
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B15/00—Special procedures for taking photographs; Apparatus therefor
    • 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
    • H01J2229/0727—Aperture plate
    • H01J2229/0766—Details of skirt or border
    • H01J2229/0772—Apertures, cut-outs, depressions, or the like

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electrodes For Cathode-Ray Tubes (AREA)

Abstract

841,694. Colour television tubes. ZENITH RADIO CORPORATION. Feb. 8, 1957 [Feb. 9, 1956], No. 4376/57. Class 39(1). A colour television tube is provided with an apertured mask 20 having a support comprising a frame member 28 encompassing the path of the electron beam and having a mask supporting surface substantially parallel to the median normal to the screen 12 and conforming in configuration to the cross-section of the envelope 14 at its position, the edge of the surface 28 nearer the screen being equidistant therefrom. Preferably the frame member is of L-section, 28, 30, as shown. The mask 20 may have a stress-relieving corrugation 36 and has a peripheral flange 34 of uniform width spot or continuously welded to the surface 28. The forward edge of the surface 28 comforms e.g. to the intersection of a rectangular tube and a spherical screen so that the mask may also be spherical and concentric with the screen.
GB4376/57A 1956-02-09 1957-02-08 Improvements in or relating to cathode ray tubes Expired GB841694A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US564434A US2897392A (en) 1956-02-09 1956-02-09 Color television tube mask and frame assembly

Publications (1)

Publication Number Publication Date
GB841694A true GB841694A (en) 1960-07-20

Family

ID=24254459

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4376/57A Expired GB841694A (en) 1956-02-09 1957-02-08 Improvements in or relating to cathode ray tubes

Country Status (2)

Country Link
US (1) US2897392A (en)
GB (1) GB841694A (en)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL291666A (en) * 1962-04-18
DE1426908A1 (en) * 1962-06-29 1968-12-12 Simmering Graz Pauker Ag Combined counter-pressure condensation process of a steam turbine system for the controlled delivery of electrical power and preparation of hot water with a wattmetric control pulse generator in the electrical coupling line between the external network and the own busbar
US3333134A (en) * 1964-06-12 1967-07-25 Rca Corp Shadow mask frame with curved supporting flange paralleling screen surface
GB1114847A (en) * 1964-06-12 1968-05-22 Rca Corp Shadow mask cathode ray tube
US3473065A (en) * 1966-01-18 1969-10-14 Nat Video Corp Over-scanning shield provided in colored television tube between the mask support and the tube
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
US3387159A (en) * 1966-10-28 1968-06-04 Nat Video Corp Color television tube mask mounting with aperture alignment maintenance during expansion
US3404302A (en) * 1967-06-21 1968-10-01 Gen Electric Envelope wall with two continuous ledges for positioning and supporting aperture mask
US3569759A (en) * 1968-07-15 1971-03-09 Kentucky Electronics Inc Shadow mask frame of sintered material for color tubes
US3639799A (en) * 1969-04-02 1972-02-01 Tubal Ind Inc Shadow mask with reinforcing ring for colored television picture tube
US3722043A (en) * 1969-04-02 1973-03-27 Tubal Ind Inc Reinforced shadow mask for colored tv picture tubes
US3558955A (en) * 1969-05-01 1971-01-26 Northern Metal Products Inc Self supporting shadow mask with reinforcing ribs and gusset plates for colored television picture tubes
US3737703A (en) * 1970-07-31 1973-06-05 Tokyo Shibaura Electric Co Shadow mask frame construction
JPS4983952U (en) * 1972-11-08 1974-07-20
US4056755A (en) * 1975-12-22 1977-11-01 Rca Corporation Color picture tube having mask-frame assembly with reduced thickness
US4593224A (en) * 1983-09-30 1986-06-03 Zenith Electronics Corporation Tension mask cathode ray tube

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2661437A (en) * 1951-06-19 1953-12-01 Nat Union Radio Corp Dark trace cathode-ray tube
US2690518A (en) * 1953-06-01 1954-09-28 Columbia Broadcasting Syst Inc Color picture tube
US2727172A (en) * 1954-08-18 1955-12-13 Rca Corp Electrode support for cathode-ray color tube
BE540599A (en) * 1954-08-18
US2806162A (en) * 1954-08-18 1957-09-10 Rca Corp Cathode-ray tube

Also Published As

Publication number Publication date
US2897392A (en) 1959-07-28

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