Patent ID: 6699432
Filing Date: 2004-03-02
Classification: A61L

Abstract:
A fragrance emanating device for freshening atmospheric air, the device comprising:(i) a closed container for accommodating a liquid fragrance composition in an interior of the container, (ii) an emanator having a surface open to ambient air for evaporation of the liquid fragrance composition, and (iii) a conduit linking the interior of the container and the emanator surface, the conduit comprising a dip tube vertically disposed within the container and extending from the emanator surface to a position near a bottom of the container, the dip tube having an upper end in communication with the emanator surface, wherein the container is formed such that expansion of air and/or liquid in the container only occurs up the dip tube, and wherein the container and the dip tube are so dimensioned that, in use, thermal expansion of air and/or liquid in the container, resulting from an increase in temperature, causes a portion of the fragrance composition to travel along the conduit from the container to the surface of the emanator, and thermal contraction of the air and/or liquid in the container, resulting from a decrease in temperature, causes ambient air to enter the container via the conduit.