Patent · US Expired

Cathode structure for a gas discharge display tube

US4253040A · kind A · utility

0Cited by

2References

6Claims

0Family size

Assignee

Siemens Aktiengesellschaft · DE

Inventors

Heinz Barth · Munich, DE
Heinz Meier · Hohenhausen, DE
Joseph P. Schramm · Albany, US

Key dates

Filing date	Jul 11, 1979
Grant date	Feb 24, 1981
Priority date	—
Expiry date	Jul 11, 1999

Classification

Technology area (CPC H)Electricity
CPC primaryH01J17/49
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A gas discharge display tube, which has a rear tube wall with parallel extending cathode strips mounted thereon characterized by the cathode strips being mounted by each strip having a pair of spring plates slidably received on pins which are fused into the rear wall of the tube. Preferably, each of the strips has a box-like cross section for slidably receiving the spring plates so that the strip can be shifted along its length on the pins. In addition, the pins for adjacent strips are offset from each other so that the pins are aligned in two rows at each end of each of the cathode strips.

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