US Patent 8658943 Personal thermal regulating device

A personal thermal regulating device (PTRD) typically includes a heat generating device, a power source, a switchable control operably coupled with each of the heat generating device and the power source, and a head retention device coupled with the heat generating device and configured to retain the heat generating device positioned centrally at and in thermally conductive contact with a user's forehead. The present invention affects a tangible warming of the extremities, particularly the hands and feet, extending retention of manual dexterity and peripheral comfort under cold conditions.