Color tube having shield correcting for terrestrial magnetism

Details Color tube having shield correcting for terrestrial magnetism Color tube having shield correcting for terrestrial magnetism

1979-02-12

1981-06-16

Segal, Robert

Electric lamp and discharge devices

Cathode ray tube

Shadow mask, support or shield

313403, 315 8, H01J 2906, H01J 2907, H01J 2981

Patent

active

042740312

ABSTRACT:
The color picture tube is provided with a terrestrial magnetism correcting member contained in the tube and combined with a shadow mask assembly. The correcting member is shaped as a rectangular box made up of a pair of vertical magnetic side plates extending from the opposed sides of the supporting frame of the shadow mask and a second pair of horizontal magnetic plates interconnecting the upper and lower ends of the vertical side plates.

REFERENCES:
patent: 3243645 (1966-03-01), Parnes et al.
patent: 3549932 (1970-12-01), Lindeman
patent: 4019085 (1977-04-01), Sakata
1974 National Convention of the Institute of Television Engineers of Japan, "Inner Shield For Color Picture Tube Section", 9-13, p. 221.

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