Cathode-ray tube with misalignment correcting tension band
US4701802A · kind A · utility
7Cited by
1References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 3, 1986 |
| Grant date | Oct 20, 1987 |
| Priority date | — |
| Expiry date | Mar 3, 2006 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J29/87
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A cathode-ray tube having an explosion-proof band shrink fitted on the periphery of the panel thereof and having recesses formed so as to adjust the effective sectional area of the explosion-proof band to a value appropriate for correcting the strain of the panel caused by the evacuation of the tube body of the cathode-ray tube. The size of the recesses is determined on the basis of a misalignment correction estimated theoretically by using measured data of deformation of the panel, so that the deformation of the panel surface is corrected appropriately, and thereby misalignment of electron beams is minimized.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.