Patent · US Active

Planar heating element with a PTC resistive structure

US11382182B2 · kind B2 · utility

0Cited by

1References

22Claims

0Family size

Assignee

Innovator Sensor Technology IST AG · CH

Inventors

Jiri Holoubek · Ulisbach, CH
Mirko Lehmann · Glückstadt, DE
Josef Vik · Chanovice, CZ

Key dates

Filing date	Jun 9, 2020
Grant date	Jul 5, 2022
Priority date	—
Expiry date	Jan 28, 2041

Classification

Technology area (CPC H)Electricity
CPC primaryH05B2203/02
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A planar heating element comprising a PTC resistive structure, which is arranged in a defined surface region of a first surface of a support substrate. The electrical connection contacts for connection to an electrical voltage source are associated with the PTC resistive structure, wherein the PTC resistive structure—starting from the two electrical connection contacts—has at least one internal conductive trace and a parallel connected, external conductive trace. The internal conductive trace has a greater resistance than the external conductive trace and the resistances of the internal conductive trace and external conductive trace are so sized that upon applying a voltage an essentially uniform temperature distribution is present within the defined surface region.

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