Color picture tube apparatus with particular deflection yoke...

Details Color picture tube apparatus with particular deflection yoke... Color picture tube apparatus with particular deflection yoke...

2007-09-25

2007-09-25

Patel, Nimeshkumar D. (Department: 2879)

Electric lamp and discharge devices

Cathode ray tube

Beam deflecting means

C313S412000, C313S413000, C313S421000, C313S442000

Reexamination Certificate

active

11029873

ABSTRACT:
A deflection yoke includes ferrite core, horizontal deflection coil, vertical deflection coil, and insulating frame for insulating the horizontal and vertical deflection coils. The deflection yoke has a cross section that satisfies the following A to C. A: A plurality of magnetic substance convex portions projecting toward the tube axis are provided in the vicinity of a position of an inner surface of the ferrite core where a vertical axis crosses. B: Assuming that a minimum value among distances between the respective magnetic substance convex portions and a funnel is D1, the distance between the ferrite core excluding the plurality of magnetic substance convex portions and the funnel is larger than the distance D1at any point of the ferrite core. C: A part of the vertical deflection coil is wound in a groove between the plurality of magnetic substance convex portions.

REFERENCES:
patent: 6281623 (2001-08-01), Suzuki et al.
patent: 6380698 (2002-04-01), Dasgupta
patent: 6838811 (2005-01-01), Tagami et al.
patent: 6914505 (2005-07-01), Taniwa
patent: 6924590 (2005-08-01), Tagami et al.
patent: 7129627 (2006-10-01), Tagami
patent: 63-241843 (1988-10-01), None
patent: 2003-208859 (2003-07-01), None

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