Patent ID: 8320751

Claim:
A volatile material diffuser, comprising: a housing; first and second containers holding first and second volatile materials and having first and second wicks, respectively, in contact with respective volatile materials and extending out of respective containers, wherein the containers are inserted into and detachably attached to the housing; first and second heaters disposed within the housing adjacent the first and second wicks, respectively, to vaporize the first and second volatile materials, respectively; and means for providing an air flow disposed in the housing such that air from the means to provide air flow transports vaporized volatile materials away from the housing; wherein the heaters are energized in an alternating sequence such that when a heater is deactivated, the means for providing an air flow cools a wick associated with the deactivated heater; wherein the means for providing an air flow is a fan that is alternated between first and second different speeds and wherein the first speed is greater than the second speed such that the first speed provides a burst of the volatile material for a larger detection area and the second speed provides a more concentrated emission in a smaller detection area.