Air treatment apparatus and refill pack
AssigneeBell Flavours & Fragrances Limited
InventorsColin Berrido, Hans-Jurgen Huppert
Life of this patent
Estimating the term…
Abstract
Air treatment apparatus comprises an electric heating element (5) and a refill pack containing wax or paraffin granules (2) incorporating a fragrance or other active substance eg. insect repellent. In another embodiment heat is supplied by a exothermic reaction mixture.
Claims24
Air treatment apparatus for volatilising a fragrance or active substance, the apparatus comprising a receptacle containing water in contact with particulate wax or paraffin, said particulate wax or paraffin having said fragrance or other active substance dispersed within particles of the wax or paraffin, and controlled heating means for heating said particulate wax or paraffin to release said fragrance or other active substance from within the wax or paraffin and into the atmosphere.
An air treatment apparatus for volatilizing a fragrance or other active substance comprising:
- (i) a particulate wax or paraffin having at least one fragrance or other active substance dispersed within particles of said wax or paraffin such that the particulate wax or paraffin retains the fragrance or other active substance within particles of the wax or paraffin at an ambient temperature below a melting point of the wax or paraffin and releases substantially all of the fragrance or other active substance when the particles are heated to the melting point of the wax or paraffin;
- (ii) a receptacle for containing the particulate wax or paraffin having the fragrance or other active substance dispersed therein;
- and
- (iii) means for controlled heating of the particulate wax or paraffin within the receptacle by reaction of a chemical substance and water that generates steam which volatilizes the fragrance or other active substance such that the fragrance or other active substance is gradually released by diffusion from the particulate wax or paraffin.
Dependencies are inferred from the claim text.