GB813954A - Improvements in or relating to cathode ray tubes - Google Patents
Improvements in or relating to cathode ray tubesInfo
- Publication number
- GB813954A GB813954A GB12245/57A GB1224557A GB813954A GB 813954 A GB813954 A GB 813954A GB 12245/57 A GB12245/57 A GB 12245/57A GB 1224557 A GB1224557 A GB 1224557A GB 813954 A GB813954 A GB 813954A
- Authority
- GB
- United Kingdom
- Prior art keywords
- screen
- portions
- members
- annular member
- mask
- 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
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
- H01J29/10—Screens on or from which an image or pattern is formed, picked up, converted or stored
- H01J29/18—Luminescent screens
- H01J29/24—Supports for luminescent material
-
- 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
- H01J2229/0727—Aperture plate
- H01J2229/0766—Details of skirt or border
- H01J2229/0772—Apertures, cut-outs, depressions, or the like
Landscapes
- Electrodes For Cathode-Ray Tubes (AREA)
Abstract
813,954. Colour television tubes. WESTINGHOUSE ELECTRIC INTERNATIONAL CO. April 15, 1957. [April 17, 1956], No. 12245/57. Class 39(1). A cathode-ray tube e.g. a colour television receiver, including a luminescent screen, electron beam generating means and a shadow mask electrode adjacent the screen also includes a peripheral shield member 37, Fig. 3, placed adjacent the mask 31 on the side thereof facing the beam generating means to prevent fringing electrons from passing between the edge of the mask and the tube wall 17 and causing undesirable edge effects. Instead of a single annular member a plurality of metallic members 57, Fig. 7, so shaped and positioned that they have a peripheral configuration conforming to portions of that of the screen, may be used, for example at the corners of a substantially rectangular screen. The annular member 61, Fig. 4, has embossed portions 55, whereby positioning members 53 touch member 61 only on portions 55 and only these embossed portions touch the shadow mask 31. The positioning members are made of resilient material and engage lock-in members 45 projecting from the envelope. The annular member is formed of metallic, preferably aluminium, foil material.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US578624A US2906904A (en) | 1956-04-17 | 1956-04-17 | Cathode ray tube |
Publications (1)
Publication Number | Publication Date |
---|---|
GB813954A true GB813954A (en) | 1959-05-27 |
Family
ID=24313633
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB12245/57A Expired GB813954A (en) | 1956-04-17 | 1957-04-15 | Improvements in or relating to cathode ray tubes |
Country Status (4)
Country | Link |
---|---|
US (1) | US2906904A (en) |
FR (1) | FR1171257A (en) |
GB (1) | GB813954A (en) |
NL (1) | NL216226A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1514352B1 (en) * | 1964-06-12 | 1970-07-30 | Rca Corp | Method for assembling the shadow mask of a picture tube |
Families Citing this family (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2939981A (en) * | 1958-03-07 | 1960-06-07 | Paramount Pictures Corp | Grid frame support structures for cathode ray tubes |
US3358170A (en) * | 1962-01-11 | 1967-12-12 | Rauland Corp | Color television picture tube and mating support members for mounting the color selection mask within the tube |
US3333134A (en) * | 1964-06-12 | 1967-07-25 | Rca Corp | Shadow mask frame with curved supporting flange paralleling screen surface |
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 |
US4002941A (en) * | 1966-10-27 | 1977-01-11 | Rca Corporation | Shadow mask cathode ray tube shield |
DE1512379B2 (en) * | 1967-01-13 | 1970-08-13 | Philips Patentverwaltung Gmbh, 2000 Hamburg | Device for holding a shadow mask on a front glass frame of a color television picture tube |
US3404302A (en) * | 1967-06-21 | 1968-10-01 | Gen Electric | Envelope wall with two continuous ledges for positioning and supporting aperture mask |
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 |
US3601650A (en) * | 1969-08-11 | 1971-08-24 | Zenith Radio Corp | Integrated shadow mask structure |
US3873874A (en) * | 1974-02-20 | 1975-03-25 | Gte Sylvania Inc | Shield attached by sealing to panel sidewall of cathode ray tube |
US4100451A (en) * | 1974-08-19 | 1978-07-11 | Zenith Radio Corporation | Face panel assembly for a color cathode ray tube |
US4670686A (en) * | 1986-04-29 | 1987-06-02 | Rca Corporation | CRT internal magnetic shield contact spring |
Family Cites Families (5)
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 |
US2695372A (en) * | 1951-10-23 | 1954-11-23 | Chromatic Television Lab Inc | Grid structure for cathode-ray tubes |
US2722623A (en) * | 1953-03-31 | 1955-11-01 | Rca Corp | Color-kinescopes etc. |
US2690518A (en) * | 1953-06-01 | 1954-09-28 | Columbia Broadcasting Syst Inc | Color picture tube |
US2806162A (en) * | 1954-08-18 | 1957-09-10 | Rca Corp | Cathode-ray tube |
-
0
- NL NL216226D patent/NL216226A/xx unknown
-
1956
- 1956-04-17 US US578624A patent/US2906904A/en not_active Expired - Lifetime
-
1957
- 1957-04-15 GB GB12245/57A patent/GB813954A/en not_active Expired
- 1957-04-16 FR FR1171257D patent/FR1171257A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1514352B1 (en) * | 1964-06-12 | 1970-07-30 | Rca Corp | Method for assembling the shadow mask of a picture tube |
Also Published As
Publication number | Publication date |
---|---|
FR1171257A (en) | 1959-01-23 |
NL216226A (en) | |
US2906904A (en) | 1959-09-29 |
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