Television picture tube face plate

Details Television picture tube face plate Television picture tube face plate

1976-03-24

1977-06-14

Griffin, Robert L.

Facsimile and static presentation processing

Facsimile

Recording apparatus

220 21A, 220 23A, H01J 502, H01J 2902

Patent

active

040298981

ABSTRACT:
A television picture tube face plate or viewing panel including a viewing area having a reduced thickness for weight reduction of the face plate or viewing panel and resultant savings in the quantity of glass required in the manufacture of such a face plate. A thickened annular area of the face plate, adjacent and surrounding the outer perimeter thereof, is preferably provided with a selected maximum thickness at or adjacent the ends of the minor axis of the face plate, a selected minimum thickness at or adjacent the diagonal axis of the face plate and an intermediate thickness at or adjacent the ends of the major axis of the face plate, the regions of the face plate at or adjacent such ends of said axes being the regions of the face plate having the greatest, least and intermediate stresses, respectively, when the face plate is part of an exhausted television picture tube.

REFERENCES:
patent: 2618759 (1952-11-01), Hayt
patent: 2728012 (1955-12-01), Swedlund
patent: 2785821 (1957-03-01), Vermaas
patent: 2799422 (1957-07-01), Hagenberg
patent: 2966997 (1961-01-01), Stutske
patent: 3508310 (1970-04-01), Eisses
patent: 3605227 (1971-09-01), Nienhists
patent: 3720345 (1973-03-01), Logue

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