Patent ID: 7084377

Claim:
A device for carrying a heated liquid, and controlling the temperature of the heated liquid, comprising: a liquid conveying element including a passage for carrying the heated liquid, first and second temperature sensing devices operatively associated with said liquid conveying element to enable sensing the temperature of the heated liquid in said passage, a controller actively connected to said first temperature sensing device and not actively connected to said second temperature sensing device such that said first temperature sensing device senses the temperature of the heated liquid in said passage and communicates the sensed temperature to said controller, said second temperature sensing device capable of being actively connected to said controller upon failure or malfunction of said first temperature sensing device, said controller including a program capable of determining whether one of said first and second temperature sensing devices has failed or malfunctioned; and a heater coupled with said controller and operated by said controller based on the sensed temperature readings taken by said first temperature sensing device.