Patent · US Expired

Ptc heater radiator with frame members applying pressure to heaters

US5562844A · kind A · utility

14Cited by

5References

18Claims

0Family size

Assignee

David & Baader-DBK-Spezialfabrik Elektrischer Apparate und Heizwiderstande · DE

Inventors

Franz Bohlender · Kandel, DE
Josef David · Bad Bergzabern, DE

Key dates

Filing date	Dec 5, 1994
Grant date	Oct 8, 1996
Priority date	—
Expiry date	Dec 5, 2014

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF28F9/001
WIPO fieldThermal processes and apparatus
WIPO sectorMechanical engineering

Abstract

In an electric radiator having a frame in which an arranged heat output elements, which include PTC resistors, and heating elements including fins, which abut on these heat output elements. The heating elements are supported by two oppositely disposed frame bars in such a way that they apply pressure to the heat output elements, said frame bars including rails having a U-shaped cross-section with flat legs extending from a central leg which is provided with longitudinally extending bulging portions separated from the central leg to impart spring properties to said bulging portions which is applied to the heating elements.

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