Glass bulb for a cathode ray tube

Details Glass bulb for a cathode ray tube Glass bulb for a cathode ray tube

1994-06-30

1995-08-29

Pollard, Steven M.

Receptacles

Envelope for electric lamp or similar device

Tv tube

313477R, H01J 2986

Patent

active

054452856

ABSTRACT:
A glass bulb for a cathode ray tube having a thinner wall thickness to reduce the weight while there is little possibility of causing an implosion.
A compression layer having a compressive stress .sigma..sub.KC is formed in a region of a panel portion 3 by physically strengthen the portion. The relation among the compressive stress .sigma..sub.KC, the breaking stress .sigma..sub.SG of the glass bulb and the maximum value .sigma..sub.VTmax of a tensile strength is 1<3.sigma..sub.VTmax /.sigma..sub.SG .ltoreq.1-(.sigma..sub.KC /.sigma..sub.SG).ltoreq.1.60.

REFERENCES:
patent: 3163794 (1964-12-01), Bloomsburgh et al.
patent: 3835250 (1974-09-01), Kaljuko et al.
patent: 4566893 (1986-01-01), Hopkins et al.
patent: 5138461 (1992-08-01), Kawamura et al.
patent: 5155410 (1992-10-01), Wakasono et al.
patent: 5188553 (1993-02-01), Dougherty
patent: 5304890 (1994-04-01), Tsukui et al.
patent: 5355051 (1994-10-01), Fondrk

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