Cathode ray tube

Details Cathode ray tube Cathode ray tube

2006-07-18

2006-07-18

Patel, Ashok (Department: 2879)

Electric lamp and discharge devices

With support and/or spacing structure for electrode and/or...

For indirectly heated cathode

C313S446000, C313S3460DC

Reexamination Certificate

active

07078851

ABSTRACT:
The indirectly heated cathode structure includes a base metal having a thermal electron emitting material layer, a cylindrical sleeve holding the base metal at one end portion thereof and housing a heating heater in the inside thereof, an support having a large-diameter portion and g a small-diameter portion, and a cathode disc having a large-diameter portion at the leg-portion-side of the heating heater and having a small-diameter portion at the heater-main-portion side of the heating heater, wherein an outer surface of another end portion of the sleeve and an inner surface of the small-diameter portion of the support are fixed to each other, and an outer surface of the large-diameter portion of the support and an inner surface of the small-diameter portion of the cathode disc are fixed to each other.

REFERENCES:
patent: 6016026 (2000-01-01), Lee
patent: 6242852 (2001-06-01), Nakamura et al.
patent: 6734609 (2004-05-01), Weon
patent: 2002/0084740 (2002-07-01), Nakamura et al.
patent: 1238547 (1999-12-01), None
patent: 1368750 (2002-11-01), None

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