Patent ID: 7712249

Claim:
An ultrasonic repellent humidifier for dispersing insect repellant into the air as a micro fine repellent vapor, comprising: a repellent tank having an interior tank volume for holding repellent; a repellent well disposed substantially below said repellent tank and having an interior well volume for holding repellent, said repellent well further comprising a sump defined as a lowermost portion of the interior well volume for accumulating repellent; a repellent tank valve for metering repellent from the repellent tank to the repellent well; a well fluid level assembly for tracking a level of repellent in the repellent well and actuating the repellent tank valve to replenish the level of repellent in the repellent well when the level of repellent drops below a predetermined level; a tank fluid level assembly for tracking a level of repellent in the repellent tank; a tank level switch mechanically coupled to the tank fluid level assembly and signaling the electronic controller when the fluid level in the repellent tank drops below a predetermined level; an ultrasonic transducer for pulverizing repellent into a micro fine repellent vapor, said ultrasonic transducer coupled to the repellent well the ultrasonic transducer comprising: an electro-mechanical converter; a ceramic vibrating surface disposed between the electro-mechanical converter and the interior well volume of the repellent well and substantially above the sump; and a seal disposed between the ultrasonic transducer and the repellent well; a blower for generating an air stream, said blower comprising: an impeller; a blower motor; and an electronic controller for controlling the ultrasonic transducer and the blower.