Patent ID: 8395088

Claim:
An electric auxiliary heater comprising: a frame; and a layer composition accommodated in the frame, the layer comprising at least one heat generating element and at least one radiator element extending in parallel thereto, wherein the heat generating element includes: at least one Positive Thermal Coefficient, “PTC”, heating element; an insulating housing surrounding the PTC heating element and electric strip conductors lying against opposite sides of the PTC heating element, wherein the housing comprises housing elements including a shell element and a shell counter element that lie against each other with the interpositioning of a sealing strip bridging opposite front sides of the housing elements, and wherein the sealing strip (i) seals the housing elements with a compressive force acting on the heat generating element from the outside and pressing the strip conductors against the at least one PTC heating element and (ii) sealingly surrounds the at least one PTC heating element, and wherein the compressive force is formed by the force of a spring holding the layer in place under spring pretension.