Funnel for cathode ray tube
US6794808B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Mar 21, 2002 |
| Grant date | Sep 21, 2004 |
| Priority date | — |
| Expiry date | Jun 7, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J2229/8609
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A funnel for a cathode ray tube includes a body portion having an opened end connected to a panel and an alignment mark formed on an outer surface of the body portion in the vicinity of the opened end, a neck portion for housing an electron gun, a yoke portion around which a deflection yoke is mounted, the yoke portion having a first end connected to the body portion at a top-of-round (TOR) and a second end connected to the neck portion. A convex portion having a thickness greater than 1 mm is provided on an outer portion of the body portion and/or yoke portion from the vicinity of the end of the alignment mark to the vicinity of the TOR in a direction of a tube axis.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.