Implosion protection for TV tubes
US4264931A · kind A · utility
2Cited by
8References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 13, 1979 |
| Grant date | Apr 28, 1981 |
| Priority date | — |
| Expiry date | Apr 13, 1999 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J29/87
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
There has been provided a television tube having funnel, panel, and neck portions fused together in a conventional manner. A controlled failure zone in the form of a circumferential implosion protection notch is formed in a rearward portion of the funnel for establishing a stress concentration location, such that, in the event of a destructive impact to the panel, the tube will crack along the notch in the controlled failure zone and reduce the implosion potential of the tube.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.