Cathode-ray tube with double tension band

Details Cathode-ray tube with double tension band Cathode-ray tube with double tension band

1977-02-28

1978-10-17

Britton, Howard W.

Facsimile and static presentation processing

Facsimile

Recording apparatus

220 21A, H01J 2987

Patent

active

041212576

ABSTRACT:
Cathode-ray tube has, for implosion protection, a first smooth-plastic-coated (preferably acrylic- or alkyd-coated) steel band laid directly on and encircling the glass panel, and a second smooth-plastic-coated steel band on the first band. Both bands are tensed to provide hoop compression in the glass panel of the tube. In some embodiments there may be a lubricating overcoating over the plastic coating and/or a short length of tape under the seal on the first band. Also, the forward edge of the first band may lie over the mold match line or up to 0.300 inch forward of the mold match line.

REFERENCES:
patent: 3573368 (1971-04-01), Kober
patent: 3597537 (1971-08-01), Kubo
patent: 3890464 (1975-06-01), Hill

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