Electron gun having a grid
US5936335A · kind A · utility
5Cited by
10References
20Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 5, 1997 |
| Grant date | Aug 10, 1999 |
| Priority date | — |
| Expiry date | Nov 5, 2017 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J23/07
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The present invention relates to an electron gun having a grid and a cathode with the cathode having an emissive part (12) which defines a central hole (11) in order to reduce spurious electron emissions from the grid to enhance cooling.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.