Glass bulb for a cathode ray tube and cathode ray tube
US6680567B2 · kind B2 · utility
4Cited by
11References
2Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Mar 12, 2002 |
| Grant date | Jan 20, 2004 |
| Priority date | — |
| Expiry date | Jun 8, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J29/861
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
When a face portion 4 of a panel portion 1 has a central wall thickness of TC, an end of a useful screen area has a wall thickness of TL, a sealing end surface of a skirt portion has is a width of TS, and an intermediate part of a body portion 7 of a funnel portion 2 is TF, there are established the formulas of; TL/TC≧1.70, TS/TL=0.43−0.50, and TF/TC=0.37−0.49, and a strengthened compressive stress of 5-14 MPa is applied to a side of the skirt portion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.