Electric lamp and discharge devices – Cathode ray tube – Shadow mask – support or shield
Patent
1985-04-30
1987-03-24
Tokar, Michael J.
Electric lamp and discharge devices
Cathode ray tube
Shadow mask, support or shield
313407, 445 30, H01J 918
Patent
active
046527915
ABSTRACT:
A color cathode ray tube comprises an envelope including a faceplate portion having on an inner surface a pattern of cathodoluminescent phosphors deposited thereon. The envelope includes a continuous peripheral support surface within the envelope spaced approximately a predetermined distance from the inner surface of the faceplate. The tube has a tensed foil aperture mask cemented to the support surface by cement means. The mask blank has a first field of apertures in coordinate relationship to the pattern of cathodoluminescent phosphors for color selection. A second field of apertures peripheral to the first field, and coordinate with the support surface, provides for receiving cementing means during assembly of the blank into a cathode ray tube. The apertures have the form of a band of substantially uniform width at least along the sides of the blank, and are small in diameter relative to the width of the band. Tabs extending from the sides of the blank are used for tensing the blank, and are separable from the blank at parting lines. Tear perforations located on the parting lines provide for tearing the tabs from the mask blank upon installation.
REFERENCES:
patent: 2625734 (1953-01-01), Law
patent: 2654940 (1953-10-01), Law
patent: 2761990 (1956-09-01), Amdursky et al.
patent: 2842696 (1958-07-01), Fischer-Colbrie
patent: 3390447 (1968-07-01), Mears
patent: 3440469 (1969-04-01), Bradu et al.
patent: 3638063 (1972-01-01), Tachikawa et al.
patent: 3873874 (1975-03-01), Shinal
patent: 3894321 (1975-07-01), Moore
patent: 4069567 (1978-01-01), Schwartz
patent: 4495437 (1985-01-01), Kume et al.
patent: 4547696 (1985-10-01), Strauss
Palac Kazimir
Prazak, III Charles J.
Strauss Paul
Clarke, Jr. Ralph E.
Roskos Joseph W.
Tokar Michael J.
Zenith Electronics Corporation
LandOfFree
Color cathode ray tube and tensible shadow mask blank for use th does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Color cathode ray tube and tensible shadow mask blank for use th, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Color cathode ray tube and tensible shadow mask blank for use th will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1356009