Rectangular color cathode ray tube bulb with integral corner bos

Details Rectangular color cathode ray tube bulb with integral corner bos Rectangular color cathode ray tube bulb with integral corner bos

1977-02-28

1979-01-16

Britton, Howard W.

Facsimile and static presentation processing

Facsimile

Recording apparatus

220 21A, H01J 2987

Patent

active

041352114

ABSTRACT:
This disclosure depicts an implosion-protected, rectangular-type color cathode ray tube bulb comprising a rectangular glass faceplate of the type having a viewing window and a flange extending rearwardly therefrom, to which flange is sealed a mating funnel. The bulb has a tension band system very tightly constricting said flange so as to provide implosion protection for the bulb by compressively pre-loading the corners of the faceplate flange. The bulb is characterized by having on the outside of the faceplate flange at each corner and molded integrally with the flange, an incompressible load-concentrating boss for significantly reducing the corner area on which the load is applied by the tension band. By this expedient, the level of the compressive stresses generated in the flange at the flange corners and the resultant implosion protection provided by the tension band system is greatly enhanced.

REFERENCES:
patent: 3490636 (1970-01-01), Nienhuis
patent: 3890464 (1975-06-01), Hill

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