Electrical heater for footwear

Details Electrical heater for footwear Electrical heater for footwear

A - Human Necessities

43

B

A43B 7/04 (2006.01) A43B 7/02 (2006.01) H05B 3/34 (2006.01)

Patent

CA 2043312

An electrical heater for footwear which is battery- powered and insertable into the footwear. The electrical heater includes a heatable insole, an electrical conductor, and a battery pack. The heatable insole comprises an upper outer fabric layer, a heater insert assembly, and a lower outer rubber layer. The heater insert assembly is very thin and flexible and comprises highly heat conductive top and bottom layers with a central layer sandwiched therebetween and having a heat conduction coefficient less than the heat conduction coefficients of the top and bottom layers, therefore acting as a momentary heat dam and storage core. A heating element is coupled to the bottom layer and has a surface area considerably smaller than the surface area of the bottom layer.

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