Method and apparatus for manufacturing cathode-ray tubes
US4979919A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Apr 16, 1990 |
| Grant date | Dec 25, 1990 |
| Priority date | — |
| Expiry date | Apr 16, 2010 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J9/20
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
This invention relates to a method of and an apparatus for baking the silicate films, which are formed on the front glass panels of cathode-ray tubes by a spraying or coating operation, so as to fix the films stably to the front glass panels. The front glass panels only, which are positioned in opposition to infrared ray radiation panels provided in the upper portion of a heating furnace body, are heated with the radiant heat from the infrared ray radiation panels. The radiant heat-screening isolation plates are provided between the front glass panels and funnels, and at least a part, which is below these isolation plates, of the furnace body is opened or cooled.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.