An air flow system based on the human circulatory system whereby a cushioning, cooling and circulating air flow is generated by a wearer of the shoe. The shoe includes a heart pump actuated by the wearer wherein arteries lead air throughout the shoe and veins return the air to the pump. The shoe is designed...http://www.google.es/patents/US6671979?utm_source=gb-gplus-sharePatente US6671979 - Air flow shoe system
