Deflection apparatus for cathode ray tube

Details Deflection apparatus for cathode ray tube Deflection apparatus for cathode ray tube

2006-07-18

2006-07-18

Guharay, Karabi (Department: 2879)

Electric lamp and discharge devices

Cathode ray tube

Beam deflecting means

C313S413000, C335S210000, C335S213000

Reexamination Certificate

active

07078853

ABSTRACT:
A deflection apparatus for a cathode ray tube includes a horizontal deflection coil, a vertical deflection coil positioned external to the horizontal deflection coil, an insulating member interposed between the horizontal and the vertical deflection coils, and a core placed on the insulating member while being connected to the vertical deflection coil. The horizontal deflection coil, the vertical deflection coil, the insulating member and the core have at least one sectional structure proceeding perpendicular to the tube axis of the cathode ray tube. With any one of the horizontal and the vertical deflection coils, the sectional structure is formed with a combination of arcs corresponding to a horizontal axis X, a vertical axis Y and a diagonal axis between the horizontal and the vertical axes X and Y. The arc corresponding to the horizontal axis X or the vertical axis Y is formed with an arc centering around a point on the axis other than the horizontal axis X or the vertical axis Y.

REFERENCES:
patent: 3226588 (1965-12-01), Barkow et al.
patent: 3488541 (1970-01-01), Barbin
patent: 3889218 (1975-06-01), Ishikawa
patent: 3912182 (1975-10-01), Ishikawa
patent: 5801481 (1998-09-01), Yokota

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