A self-sterilizing humidifier for air to be breathed, of the type having endless porous media driven to be progressively immersed in a receptacle. Means are shown for periodically providing throughout the effective volume of water in the receptacle heated water at a temperature above about 180.degree....http://www.google.fr/patents/US4089915?utm_source=gb-gplus-shareBrevet US4089915 - Self-sterilizing humidifier
