Machines for the implantation of cathodes in cathode-ray tube guns
US4898559A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jan 10, 1989 |
| Grant date | Feb 6, 1990 |
| Priority date | — |
| Expiry date | Jan 10, 2009 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J2209/185
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Disclosed is a machine for the implanting of a cathode in an eyelet of a cathode-ray tube gun. This machine has a gun-supporting device which is movable along the axis of the gun, a cathode-supporting device positioning the cathode along the axis of the gun and a sensor with retractile rod which works together with a first detector, giving the position of the cathode when the rod rests on the grid G1, said sensor being capable of being shifted in a direction perpendicular to the axis of the gun. It further has a gauge rod, with a calibrated length, which rests on the grid G2 and ends at the side opposite to the eyelet, with a second detector recording the position of the gauge rod and a control device determining the shift of the gun-supporting device on the basis of the measurements made by the two detectors.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.