Patent · US Expired

Surge voltage protector

US5243257A · kind A · utility

2Cited by

5References

6Claims

0Family size

Assignee

Hoechst Ceramtec AG · DE

Inventors

Volker Dietrich · Neuenstein, DE
Tha Do-Thoi · Westerburg, DE
Peter Stingl · Achern, DE

Key dates

Filing date	Oct 23, 1991
Grant date	Sep 7, 1993
Priority date	—
Expiry date	Oct 23, 2011

Classification

Technology area (CPC H)Electricity
CPC primaryH01T4/04
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A surge voltage protector having a tubular ceramic part as an insulator, and having metal electrodes soldered onto the end faces thereof. Each electrode is electrically connected in each case to an ignition aid applied at least to the inside wall of the ceramic part. The inside edges of the surfaces joining the ceramic part to the electrodes are each provided with a chamfer whose chamfer angle is 15.degree. to 60.degree. relative to the plane of the joining surfaces. The width projected onto the plane of the joining surface is 0.05 to 0.4 mm.

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