Patent · US Expired

Heating element for heating boiling plates, hotplates and the like

US4538051A · kind A · utility

23Cited by

12References

11Claims

0Family size

Assignee

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

Inventors

Felix Schreder · Oberderdingen, DE
Leonhard Dorner · Oberderdingen, DE
Eugen Wilde · Knittlingen, DE

Key dates

Filing date	Apr 19, 1984
Grant date	Aug 27, 1985
Priority date	—
Expiry date	Apr 19, 2004

Classification

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

Abstract

A radiant heating element for heating a glass ceramic plate carries on a circular insulating support heating elements in the form of wire coils fixed thereto, which are arranged in the form of two parallel spiral paths. Two separately switchable heating conductors are successively arranged in one spiral path, while the third heating conductor is positioned alone in the other spiral path. The heating conductors have different power levels and can be switched to different power stages by a seven-timing switch.

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