Electron gun for heating, melting and vaporizing purposes, with deflection systems
US4061871A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 29, 1976 |
| Grant date | Dec 6, 1977 |
| Priority date | — |
| Expiry date | Apr 29, 1996 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J37/063
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Electron gun for heating, melting and vaporizing purposes having an electron-emitting cathode, at least one beam-forming electrode associated with the cathode, an accelerating anode, an electromagnetic lens and a beam guiding-tube extending in the direction of the beam path and surrounded by an electromagnetic deflection system for the x-axis deflection and one for the y-axis deflection. An envelope tube is disposed outside of the deflection systems and is joined at its extremity to the end of the beam guiding tube by an end plate through which the pole shoes of the x-axis deflection system are brought. The end plate is inclined towards the cathode beginning from the pole shoes of the x-axis deflection system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.