Apparatus for manufacturing cathode-ray tubes
US5435767A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 7, 1994 |
| Grant date | Jul 25, 1995 |
| Priority date | — |
| Expiry date | Apr 7, 2014 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J9/38
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A plurality of successive evacuating carts for carrying respective cathode-ray tube bulbs thereon are circulatingly fed along a looped feed path into and out of an evacuating furnace. While in the evacuating furnace, the cathode-ray tube bulb carried on each of the evacuating carts is evacuated, and the evacuating pipe thereof is sealed. An evacuating pipe detecting device is disposed at a position along the feed path for detecting whether the evacuating pipe of the cathode-ray tube bulb carried on each of the evacuating units is damaged or not. If the evacuating pipe of any cathode-ray tube bulb is detected as being damaged and remains on the evacuating cart, the evacuating cart is discharged out of the feed path, and a replacement evacuating cart is charged into the feed path.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.