Patent · US Expired

Radiant electrical heater, as well as method and apparatus for the manufacture thereof

US4380116A · kind A · utility

6Cited by

4References

9Claims

0Family size

Assignee

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

Inventors

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

Key dates

Filing date	Dec 4, 1980
Grant date	Apr 19, 1983
Priority date	—
Expiry date	Dec 4, 2000

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T29/49938
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A method for the manufacture of a radiant electrical heater, intended more particularly for heating glass ceramic hotplates, comprises so inserting or pressing helical heating resistors in helical slots in a support, such that the support or the heater coils themselves are deformed and consequently fixed to the support. The coils penetrate the wall or bottom areas of the slot or are otherwise secured by parts of the support by positive engagement. An apparatus for performing the method has a tool with ribs which deforms the support or heater coils for positive engagement. A radiant heater is obtained, whose support has partly overlapping deformations in the slot area of the heater coils.

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