Patent ID: 7775204

Claim:
A device for warming a shoe including an insole having a top cavity, and a releasable shoe pad comprising: a thin metal member formed on the shoe pad, the metal member comprising an intermediate conductive member, a forward conductive section extended from the conductive member and forming a plurality of first closed loops, and a rearward conductive section extended from the conductive member forming a plurality of second closed loops; and a heater unit disposed under the shoe pad, the heater unit comprising a fuel chamber, a combustion chamber, and a channel interconnected between the fuel chamber and the combustion chamber, the channel including fibers filled therein and an extending wick having one end immersed in the fuel chamber and the other end connected to the fibers, wherein the combustion chamber comprises zirconia (ZrO 2 ) fibers filled therein; wherein fuel in the fuel chamber is adapted to reach the combustion chamber through the wick and the fibers in a form of vapor for ignition.