A water supply device for a humidifier having a water tank for retaining water and a vaporizing chamber for producing water vapor with the water supplied from the water tank, is disclosed in which the water supply device comprises a water tube for supplying the water from the water tank to the vaporizing...http://www.google.fr/patents/US7254320?utm_source=gb-gplus-shareBrevet US7254320 - Water supply device for humidifier
