| abstract |
A diffusion device (10) comprises a housing (12) and first and second containers (26,28) disposed within the housing (12) and having first and second wicks, respectively, extending therefrom. The diffusion device (10) further includes first and second active materials disposed in the first and second containers, respectively, and first and second piezoelectric elements disposed adjacent tips of the first and second wicks, respectively. Still further, the diffusion device (10) includes a switch (18) disposed on a top surface of the housing (12), wherein the switch (18) is adapted to control the mode of operation of the device. The device includes first, second, and third modes of operation, wherein in the first mode of operation, the device emits the first active material, in the second mode of operation, the device emits the second active material, and in the third mode of operation, the device alternates between emitting the first and second active materials. |