Cathode ray tube with a corrugated mask having a corrugated skir

Details Cathode ray tube with a corrugated mask having a corrugated skir Cathode ray tube with a corrugated mask having a corrugated skir

1977-07-08

1978-10-24

Segal, Robert

Electric lamp and discharge devices

Cathode ray tube

Shadow mask, support or shield

29 2518, 313407, H01J 2902, H01J 2907

Patent

active

041223683

ABSTRACT:
The tube is improved by the shadow mask having an apertured active portion of parallel corrugations and integral corrugated skirt portions extending from the two opposite corrugated edges of the mask. In one embodiment, the skirt corrugations are equal in periodicity but of opposite phase to the mask corrugations.

REFERENCES:
patent: 3109117 (1963-10-01), Kaplan
patent: 3585431 (1971-06-01), Long
patent: 3872345 (1975-03-01), Yamazaki et al.
patent: 3923566 (1975-12-01), Law
patent: 3944867 (1976-03-01), Kaplan
patent: 4072876 (1978-02-01), Morrell

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