Electrode structure for electron gun
US4510413A · kind A · utility
8Cited by
2References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 9, 1980 |
| Grant date | Apr 9, 1985 |
| Priority date | — |
| Expiry date | Feb 9, 2000 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J29/503
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An electrode structure for an electron gun, especially an in-line type electrode structure for an electron gun of a color picture tube. The electrode structure dispenses with auxiliary electrodes and its three cylindrical members are integrally formed by press work. After the pressing step, the inner edge of the bottom portion of each cylindrical members is beveled to provide a tapering surface having a desired circular cross section. By forming a circular groove in the bottom portion, opposite to the tapering surface, the formation of the tapering surface is made more exact.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.