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.

Abstract: An improved radiator suitable for use with internal combustion engines in motor vehicles is provided. The invention converts conventional radiators, which ordinarilly provide heat to passenger compartments through exchange of heat built up in the coolant, into electrically operable radiators with electric resistance heating elements, commonly PTC resistors. The PTC resistors have self, temperature-regulating properties which prevent over heating. Additionally, sheet metal strips in heat-transmitting contact with the PTC resistors and spring elements acting on the sheet metal strips provide an efficient heat transfer mechanism whereby heat from the resistors is transferred without the self-regulating resistors constantly shutting off.