Patent · US Expired

Heating element, particularly radiant heating element for heating glass ceramic plates

US4511789A · kind A · utility

19Cited by

9References

14Claims

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	Aug 31, 1983
Grant date	Apr 16, 1985
Priority date	—
Expiry date	Aug 31, 2003

Classification

Technology area (CPC H)Electricity
CPC primaryH05B2213/04
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

An electrical radiant heating body has two concentric heating zones with independently operable heating resistors. On only switching in the central zone, the associated heating resistor has a very high power which, on connecting in the outer zone, can be reduced by the connection in series of a heating resistor in the outer zone, so that there is a uniform heating surface loading for the total heating surface. The thermometer probe of a thermal cut-out projects over the heating surface and has two contacts operating at different temperatures, one of them being a changeover contact.

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