Cathode-ray tube having a shrinkfit implosion protection band with tension limiting means
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United States of America Patent
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Jan 19, 1993
Grant Date -
N/A
app pub date -
Mar 29, 1991
filing date -
Mar 29, 1991
priority date (Note) -
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status (Latency Note)
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Abstract
A cathode-ray tube comprises an evacuated envelope which includes a faceplate panel joined to a funnel. A shrinkfit implosion protection band of at least one strip of metal, having oppositely disposed ends, is secured together at a connective joint to form a loop with cold dimensions slightly smaller than the periphery of the panel prior to application of the band. The band has a given sectional area with at least one opening formed therethrough. The band is fitted around the periphery of the panel to apply a compressive force thereto, as a result of the tension of the band. The band is improved by providing at least one slot within the band and in communication with the opening, to reduce the sectional area of the band sufficiently to lower the tension of the band below the minimum design limit of the connective joint.
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