Patent · US Expired

Method of mounting the support for a fast warm-up cathode

US4263701A · kind A · utility

0Cited by

2References

6Claims

0Family size

Assignee

International Standard Electric Corporation · US

Inventors

Hartmut Ganzle · Bad Liebenzell, DE
Gunther Hanchen · Fellbach, DE
Hermann Noller · Fellbach, DE
Hans Reule · Wissen, DE
Siegfried Spieth · Eßlingen, DE
Horst Vogel · Préverenges, CH

Key dates

Filing date	Oct 17, 1979
Grant date	Apr 28, 1981
Priority date	—
Expiry date	Oct 17, 1999

Classification

Technology area (CPC H)Electricity
CPC primaryH01J2209/185
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

The cathode support of an indirectly heated cathode for picture tubes is commonly mounted in a ceramic disk by cold riveting. With sheet thicknesses below 0.1 mm, the support cracks during riveting. According to the invention, that portion of the support which projects beyond the ceramic disk is first rolled over by wobble-riveting, after which the support is braced by hot-pressing. This insures that the cathode support is securely held in place and prevents cracking.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.