Patent · US Expired

Electric heating unit

US4910388A · kind A · utility

12Cited by

9References

36Claims

0Family size

Assignee

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

Inventors

Josef Lorenz · Oberderdingen, DE
Robert Kicherer · Maulbronn, DE
Ewald Keller · Zaberfeld, DE

Key dates

Filing date	Jul 11, 1988
Grant date	Mar 20, 1990
Priority date	—
Expiry date	Jul 11, 2008

Classification

Technology area (CPC H)Electricity
CPC primaryH05B2203/017
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

In an electric heating unit (1), at least one heating circuit of a heating resistor (2) is arranged as a coated or printed conductor track and is consequently arranged by means of an adhesive joint (16) on a support (3) made from a high temperature-resistant synthetic paper. The unit is fixed, on its bare side remote from the heating resistor and by means of a whole-surface adhesive joint (13), directly to the associated reception side (11) of the body (10) to be heated. The adhesive joint (13) is appropriately formed by an adhesive layer (14) of silicone resin adhesive or the like, or a self-adhesive layer with a thickness of a few tenths of a millimeter and which permanently in stress-compensating manner has roughly the same thermal stability as the support (3). At least one heating circuit can be switched by means of a mechanical temperature switch with high switching hysteresis.

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