Scent diffuser

Abstract

Scent diffusers (e.g., air fresheners) having adjustable scent diffusion rates may comprise scent intensity adjustment configurations for adjusting the intensity of a fragrance material emitted from the scent diffusers. In certain embodiments, the scent intensity adjustment configuration may take the form of slidable planar scent panels saturated with fragrance composition that may be moved into and out of a hollow body portion. When positioned substantially within the hollow body portion, the scent panels emit fragrance composition at a first rate, and when positioned substantially outside of the hollow body portion, the scent panels emit fragrance at a second rate, faster than the first rate. Alternatively, a scent diffuser may have a body portion containing a scent panel, wherein the body portion has a plurality of ventilation openings to control the rate of fragrance composition diffusion by rotating an adjustment panel to selectively block the ventilation openings of the body portion.

That which is claimed: 
     
         1 . A scent diffuser comprising:
 a hollow body surrounding a body interior, the hollow body defining a first end and a second end, wherein the second end is parallel with the first end and is separated from the first end by one or more sidewalls extending between the first end and the second end, and wherein the first end and the second end each define a plurality of ventilation openings extending through the hollow body;   a fragrance panel saturated at least in part with a fragrance composition, wherein the fragrance panel is positioned within the hollow body;   at least one adjustment panel positioned within the body interior and rotatably secured relative to an interior surface of the first end, wherein the adjustment panel defines a plurality of apertures extending therethrough that may be selectably aligned with the ventilation openings extending through the first end of the hollow body, the adjustment panel is rotatable between:
 an open configuration in which the plurality of apertures of the adjustment panel are aligned with the ventilation openings of the hollow body; and 
 a closed configuration in which the plurality of apertures of the adjustment panel are not aligned with the ventilation openings of the body, and the ventilation openings of the body portion are blocked by a portion of the adjustment panel. 
   
     
     
         2 . The scent diffuser of  claim 1 , wherein the adjustment panel comprises a control pin extending through a ventilation opening of the body portion to enable user rotation of the adjustment panel relative to the hollow body. 
     
     
         3 . The scent diffuser of  claim 1 , wherein the at least one adjustment panel is a first adjustment panel, and the scent diffuser further comprises a second adjustment panel positioned within the body interior and rotatably secured relative to an interior surface of the second end, wherein the second adjustment panel defines a plurality of apertures extending therethrough that may be selectably aligned with the ventilation openings extending through the second end of the hollow body, the second adjustment panel is rotatable between:
 an open configuration in which the plurality of apertures of the second adjustment panel are aligned with the ventilation openings of the hollow body; and   a closed configuration in which the plurality of apertures of the second adjustment panel are not aligned with the ventilation openings of the body, and the ventilation openings of the body portion are blocked by a portion of the adjustment panel.   
     
     
         4 . The scent diffuser of  claim 3 , wherein the second adjustment panel is rotatable independently of the first adjustment panel. 
     
     
         5 . The scent diffuser of  claim 1 , wherein:
 the at least one adjustment panel defines an alignment aperture extending through a central portion of the adjustment feature; and   the interior surface of the first end comprises an alignment feature extending into the body interior and engaging the alignment aperture of the adjustment panel such that the adjustment panel is pivotable about the alignment feature.   
     
     
         6 . The scent diffuser of  claim 1 , wherein
 the adjustment feature defines an at least substantially circular perimeter and defines at least one stop travel groove within a portion of the perimeter; and   the interior surface of the first end comprises a stop protrusion extending into the body interior within the stop travel groove of the adjustment feature; and wherein:   the stop protrusion is positioned adjacent a first end of the stop travel groove when the adjustment feature is rotated to the closed configuration, and   the stop protrusion is posited adjacent a second end of the stop travel groove when the adjustment feature is rotated to the open configuration.   
     
     
         7 . The scent diffuser of  claim 1 , wherein the fragrance panel comprises a cellulose panel saturated at least in part with the fragrance composition. 
     
     
         8 . The scent diffuser of  claim 1 , wherein:
 the fragrance composition is configured to evaporate into air surrounding the scent diffuser at a first rate when the adjustment panel is in the closed configuration; and   the fragrance composition is configured to evaporate into air surrounding the scent diffuser at a second rate when the adjustment panel is in the open configuration, wherein the second rate is greater than the first rate.