Patent · US Active

Flat heater including conductive non-woven cellulose material

US8153940B2 · kind B2 · utility

4Cited by

1References

11Claims

0Family size

Assignee

Thüringisches Institute für Textile—und Kunstostoff-Forschung e. V. · DE

Inventors

Frank-Günter Niemz · Rudolstadt, DE
Bernd Riedel · Hagneck, CH
Carmen Knobelsdorf · Saalfeld, DE

Key dates

Filing date	Sep 23, 2008
Grant date	Apr 10, 2012
Priority date	—
Expiry date	Jul 30, 2030

Classification

Technology area (CPC H)Electricity
CPC primaryH05B2214/04
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

The invention relates to a flat heater, which is used for applications in the range of heating voltages of up to 1000 V, produces attainable powers of up to 2 kW/m2 and is characterized by the fact that the electrical resistance required for the heating is formed by an electrically conductive cellulose nonwoven. Metallic contacts which are incorporated ensure the connection of the conductive cellulose nonwoven to a voltage source. Polymer films applied on both sides provide mechanical and electrical protection and prevent the ingress of moisture into the cellulose nonwoven.

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