Tension mask for a cathode-ray tube with improved vibration damping
OwnerJoseph Arthur Reed, Gary Lee Diveninventors
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Abstract
The present invention provides a tension mask having a frequency distribution with improved vibration damping. The tension mask includes a center portion between two edge portions. The tension mask also has a parabolic frequency distribution between the edge portions whereby the center portion has a central frequency distribution value and the edge portions have a relatively lower peripheral frequency distribution value characterized in that the range of variation between the center and edge portions frequency distribution value is in the closed interval of about 8 Hz≦Δ≦12 Hz
Claims5
A method for improving vibrational damping in a cathode-ray tube, comprising:
- fixing a tension mask to a peripheral frame such that a center portion of the tension mask has a central frequency distribution greater than peripheral frequency distributions of edge portions of the tension mask.
Dependencies are inferred from the claim text.