Patent · US Expired

Temperature switch

US5113170A · kind A · utility

8Cited by

0References

20Claims

0Family size

Assignee

E.G.O. Elektro-Gerate Blanc u. Fischer · DE

Inventors

Gerhard Goessler · Oberderdingen, DE
Eugen Wilde · Knittlingen, DE

Key dates

Filing date	Sep 6, 1990
Grant date	May 12, 1992
Priority date	—
Expiry date	Sep 6, 2010

Classification

Technology area (CPC H)Electricity
CPC primaryH01H2037/326
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A temperature switch for limiting the temperature of a glass ceramic plate against the radiation emanating from light and dark radiators has a sensor, which comprises a metallic sensor tube and an inner ceramic rod. Over the sensor is drawn a steatite tube, which on the one hand ensures the electrical insulation between the heaters and the glass ceramic plate and on the other so shields the radiation by reflection, absorption and thermal mass, that the sensor is given a temporary response delay and a greater switching hysteresis.

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