Patent ID: 6756572
Filing Date: 2004-06-29
Classification: H05B

Abstract:
A thermo-sensitive heater comprising:a tubular coating layer with electric insulating characteristics; a tubular thermistor disposed in the coating layer, having inner and outer surfaces; a cord-shaped heating element disposed in the thermistor, having inner and outer surfaces; a center core structure disposed in the form of a wire in the cord-shaped heating element; a shielding coil disposed in the form of a winding wire around the outer surface of the thermistor, wherein the shielding coil comprises a temperature detecting terminal; a first heating coil disposed in the form of a winding wire around the outer surface of the cord-shaped heating element, thus contacting the inner surface of the thermistor; and a second heating coil disposed in the form of a winding wire around the center core structure, contacting the inner surface of the cord-shaped heating element, wherein the first and second heating coils are connected in series and are each connected to a current supplying terminal.