CRT Internal shielding means for a spun glass envelope funnel section
US4513221A · kind A · utility
4Cited by
5References
2Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 26, 1982 |
| Grant date | Apr 23, 1985 |
| Priority date | — |
| Expiry date | Feb 26, 2002 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J29/06
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The invention relates to internal magnetic shielding means for a cathode ray tube using a spun-funnel envelope portion. The sidewall of the shielding structure is of discretely shaped contour to provide a desired spatial compatibility with at least portions of a projecting glass ridge on the interior surface of the funnel.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.