Flat tension mask front panel CRT bulb with reduced front seal a

Details Flat tension mask front panel CRT bulb with reduced front seal a Flat tension mask front panel CRT bulb with reduced front seal a

1991-12-31

1993-08-31

Ramsey, Kenneth J.

Electric lamp or space discharge component or device manufacturi

Process

With assembly or disassembly

313407, 313408, H01J 926

Patent

active

052404471

ABSTRACT:
Accelerated thermal upshock rates in the exhaust cycle of a CRT envelope are attained for a tension mask CRT having a shadow mask supporting rail frame affixed to the front panel. The actual corners of the rail frame are chamfered or left open to provide an increased separation distance from the corners of the funnel seal land. Panel fracturing stresses generated in the funnel seal area corners during upshock are thus alleviated allowing for faster CRT throughput during manufacture, without increasing the size of the CRT components.

REFERENCES:
patent: 4728854 (1988-03-01), Fendley
patent: 4745330 (1988-05-01), Capek et al.
patent: 4804881 (1989-02-01), Strauss
patent: 5053674 (1991-10-01), Gismondo et al.
patent: 5086251 (1992-02-01), Capek et al.
patent: 5145437 (1992-09-01), Ondra et al.
patent: 5162694 (1992-11-01), Capek et al.

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