Patent ID: 7865071

Claim:
A method for heating a device comprising the steps of: physically coupling an electrically resistive heating element with the device; electrically coupling the electrically resistive heating element with one or more inductive secondary coils; and enclosing the secondary coil and the electrically resistive heating element such that the enclosure is fully sealed and unpenetrated; controlling energization of the electrically resistive heating element with a heater control: altering power transferred from a primary to the inductive secondary coil with an adjustable impedance; coupling a temperature sensor with the heater control; controlling the adjustable impedance with a controller responding to the temperature sensor; controlling an electric current in response to the controller operating responsive to instructions received from a receiver coupled to the controller to change the adjustable impedance; transmitting information from the temperature sensor to the controller from a transmitter physically coupled to the temperature sensor; and moving the inductively powered heater with a propulsion system including an electric motor.