Electron gun structure for a cathode-ray tube
US7042146B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 9, 2004 |
| Grant date | May 9, 2006 |
| Priority date | — |
| Expiry date | Mar 25, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J29/04
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The disclosure describes an electron gun having cathode support structure which comprises an eyelet that surrounds a cathode and is welded to the cathode, and a metal plate 150 substantially parallel to the longitudinal axis of the gun. The metal plate has a central part 152 folded so as to partially surround the eyelet and two side arms 151 extending an each side of the central part and connected thereto by a region 155. The region has, in the direction of the longitudinal axis, a width which is greater than the width of the side arms in the same direction, thereby making it possible to use the same support for the side and central cathodes of a three-beam gun.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.