Cathode ray tube having an improved implosion proof structure
US4858016A · kind A · utility
12Cited by
9References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 7, 1988 |
| Grant date | Aug 15, 1989 |
| Priority date | — |
| Expiry date | Mar 7, 2008 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J2229/0053
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A cathode ray tube having a tube envelope, an anti-explosion band wrapped around the tube envelope, the band having parallel upper and lower arm portions and parallel left and right arm portions, rear extension portions extending rearwardly from the upper and lower arm portions, and degaussing coils secured to the rear extension portions. The structure is such that an external magnetic shield member used in the prior art can be omitted so that the manufacturing process for the cathode ray tube is simplified and the manufacturing cost is reduced.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.