Funnel for cathode ray tube

Details Funnel for cathode ray tube Funnel for cathode ray tube

2005-03-01

2005-03-01

Patel, Nimeshkumar D. (Department: 2879)

Electric lamp and discharge devices

Cathode ray tube

Envelope

C313S478000, C313S479000

Reexamination Certificate

active

06861795

ABSTRACT:
A funnel for a cathode ray tube has a relationship 0<α(z)<d in an arbitrary cross section P(z) parallel with a plane including an open end portion, where α(z) is an angle (°) defined between a line and a major axis (LA) of the funnel, the line being connecting an outermost part D(z) on at least one of an outer surface and an inner surface of the body portion and a center axis (C) of the funnel, and d is an angle (°) defined between a diagonal axis (DA) of the funnel and the major axis (LA).

REFERENCES:
patent: 6002203 (1999-12-01), Yokota et al.
patent: 6335588 (2002-01-01), Kim et al.
patent: 6392336 (2002-05-01), Sugawara et al.
patent: 9-320492 (1997-12-01), None
patent: 2000-113840 (2000-04-01), None

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