Vapour emitter with movable partition to expel vapour

Abstract From the Canadian patent

A vapour-emitter capable of continuously and slowly emitting vapours, and repeatedly and rapidly expelling a boost of vapours, into the atmosphere surrounding the container, comprising a container having at least one slow release generator positioned therein characterized, in that the container is provided with at least one opening at two different locations, the slow release generator being part of or forming a substantially vapour-tight partition between the locations and being in contact with the atmosphere on both sides of the partition and expelling means being provided for expelling vapour-containing air from the container.