Patent ID: 8247739

Claim:
A heating element for metallic plastic injection nozzles or the like, the heating element comprising: a tubular metal hollow body having a tube wall for surrounding a nozzle body of an injection molding device in a heat-transmitting manner, said tubular metal hollow body having one or more grooves extending in a thread-like manner in at least some sections in an outer and/or inner jacket surface of the tube wall; a tubular heating body structure with one or more tubular bodies inserted and/or pressed in said one or more grooves, said tubular heating body structure having electric terminals projecting away from said hollow body; a thermocouple as a temperature sensor guided in one of said one or more guide grooves of said tube wall, said temperature sensor having a sensor tip arranged in an end area of said tube wall such that said sensor tip is in thermal contact with a material wall of the plastic injection nozzle, said tube wall including a tube wall section with a U-shaped groove thermally separated laterally from a remainder of the tube wall by at least two front-side notches, said tube wall section being radially flexibly and resilient and compressed by a radial surface force from a gap-free thermal contact fitting of said tube wall section on the nozzle body, said sensor tip being fixed in a heat-transmitting manner in said groove-like recess.