Abstract: An apparatus adapted to disseminate a volatile liquid, for example, a fragrance, into an atmosphere, the apparatus comprising a reservoir containing the liquid and a porous liquid transfer member through which the liquid is conveyed from the reservoir to the atmosphere and from which part extending into the atmosphere it is disseminated, the reservoir consisting of a collapsible bladder that reduces in volume responsive to atmospheric pressure and the loss of liquid, the porous transfer member being encased in an impermeable sleeve that is open to the liquid at that end of the member remote from the that part in the atmosphere, the transfer member additionally comprising at or adjacent to the open end means that interact with the collapsing bladder to maintain liquid contact with the transfer member.

Abstract: An air freshener replacement bottle having an open ended, externally threaded neck a wick holding sleeve which press fits onto the open end of the bottle. The sleeve has an outwardly directed flange with a lower face that abuts against an upper end of the bottle neck. An internally threaded cap is threaded onto the neck of the bottle compressing the wick holder flange forming a seal. The cap has a cylindrical wall smaller in diameter than the lower portion of the cap, protruding from its top. The cylindrical wall contains at least one annular groove on it outside. A wick extends through the sleeve and the cylindrical wall with one end projecting into the cavity of the bottle and the opposite end exposed to the air. Another cap whose internal diameter is sized slightly larger than the cylindrical wall on the first cap has at least one internal annular rib sized slightly smaller than said at least one groove in said cylindrical wall.

Abstract: The present invention relates to an apparatus and method for the low energy flash-like vaporization of liquids and the release of the resulting vaporized liquid into the atmosphere in the form of a visible plume, mist or cloud. Vaporization is occasioned in a geometrically small device capable of producing vaporized liquid that varies little in composition in comparison to the starting liquid feed to the device. The apparatus and method are primarily directed towards the treatment of small areas for residential air fragrancing, odor elimination, treatment of insects or pests, air sanitization, air and surface antibacterial or antimicrobial treatment, administration of personal pharmaceuticals or medicaments, as well as other ambient air or surface modification by way of gas, vapor or droplet distribution.

Abstract: The present invention provides a dispensing device used for the slow controlled dispensing and diffusion of gels and thickened liquids. More particularly, the present invention relates to wick type air freshening devices, which employ a wick to convey materials from an enclosed container by capillary action.

Abstract: A method of providing in an atmosphere both a continual supply of volatile liquid and the possibility for a time of an enhanced supply, comprising providing the liquid (3) in a reservoir (1) with an opening, which opening is covered by a membrane (4) of a thickness of from 0.05-0.4 mm so as to define within the reservoir an internal evaporation space (6), the continual supply being provided by liquid evaporating within the internal evaporation space and passing through the membrane, and the enhanced supply being provided by evaporation from liquid absorbed in the membrane which has been brought into contact with the liquid and then separated therefrom. The method is easily carried out with a simple, cheap device. A suitable choice of membrane also gives an end-of-life indication by changing colour as liquid absorbed therein is disseminated.

Abstract: A discharge device, an evaporator and a method for evaporating a liquid to the atmosphere in which the liquid is supplied to an evaporation surface only by a capillary.

Abstract: The leg mounted scent dispenser distributes liquid scent to mask human scent or to deposit a tangle free and consistent scent trail. The dispenser assists hunters in capturing game with weapons and cameras alike. The dispenser includes straps for attaching to a boot and to the lower leg of a person. The boot level strap connects to a canister filled with a scent of the hunter's skillful choice. The canister communicates with a drip valve, or alternatively a pump, that discharges a small portion of scent with each time the boot lands. The person regulates the desired scent flow and walks to a stand or tracks the game. Once at a stand or having taken the game, the hunter turns off the canister and removes the present invention for storage.

Abstract: A device adapted to disseminate into an atmosphere in sequence a plurality of active volatile liquids, such as fragrances, comprising a plurality of individual liquid reservoirs, a dissemination element associated with each reservoir, a central source of forced air current and one air channel per reservoir leading from an entrance at the central source to each dissemination element, air current being provided to one channel at a time by means of an air-tight rotatable barrier comprising a plurality of apertures, the spacing of these apertures being adapted to close all but one entrance at any given time. The device may be provided as a simple plug-in type and substantially overcomes the problem of “habituation” encountered with single fragrance air fresheners.

Abstract: A volatile material diffuser includes a housing and 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. The diffuser further includes first and second heaters disposed within the housing adjacent the first and second wicks, respectively, to vaporize the first and second volatile materials, respectively. A means for providing an air flow is disposed in the housing such that air from the means for providing an air flow transports vaporized volatile materials away from the housing. 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.

Abstract: A passive dispensing device for a liquid active material includes an upper housing portion for receiving a container for holding and dispensing a liquid active material, wherein the upper housing portion includes an interior cavity and wherein the container includes a wick extending from inside the container to an area outside the container. The device further includes a lower housing portion that extends downwardly from the upper housing portion, wherein the lower housing portion defines a recess between the upper and lower housing portions and includes first and second legs that extend downwardly from the upper housing portion and outwardly from the recess.

Abstract: An integrated reservoir and controlled release matrix system (1) for the controlled release of insect semiochemicals is described. The system includes a reservoir (2) possessing a volume chamber and sealed vent opening (5) at one end. Extending from the opposite end of the reservoir chamber is a hollow needle-like conduit (7) which is open to the reservoir chamber at one end. The conduit protrudes or extends from the reservoir and impregnates a release matrix (3), effectively connecting the reservoir with the release matrix. The conduit may be variously formed with: a) an opening at the reservoir end which is open to the reservoir chamber and only one opening at the opposing end protruding into the release matrix; or b) multiple perforations along its length accompanying the end opening into the release matrix; or c) multiple lengthwise perforations without an end opening into the release matrix. The release matrix is also variously formed of elongated cubic or spherical geometry.

Abstract: Disclosed is an air freshener apparatus capable of being attached to an air-vent for receiving air. The air freshener apparatus comprises an enclosure formed by a front portion and a back portion. The enclosure removably secures a reservoir having an aromatic substance. Further, an attaching member extends from the back portion to attach the enclosure to the air-vent. Furthermore, an air-vent opening is configured on the back portion for receiving the air from the air-vent on removably attaching the enclosure to the air-vent, and further, directing the air to the reservoir for obtaining a mixture of the air and the aromatic substance. Furthermore, an adjustable opening is configured on the front portion for dispensing the mixture out of the enclosure. Moreover, a regulating means is provided for adjusting the adjustable opening for dispensing required amount of the mixture therefrom, and a lighting member is provided for illumination purpose.

Abstract: An accessory element includes: an enclosure made of an airproof material, defining a chamber therein, having two opposite sides, and formed with a loading hole for loading of a perfume into the chamber and for releasing the fragrance of the perfume therefrom; and an absorbent member enclosed by the enclosure for absorbing the perfume loaded into the chamber. The absorbent member cooperates with the enclosure to form into an integral piece that is formed with a string-hole extending through the opposite sides of the enclosure and the absorbent member.

Abstract: An injection nozzle (4) for an internal combustion engine, the injection nozzle (4) including a nozzle body (6) provided with a bore (8) defining a valve seating surface, and having a first nozzle outlet and a second nozzle outlet, a first delivery chamber upstream of said nozzle outlets, an outer valve member, moveable within the bore (8) and itself provided with an axial bore (8), wherein the outer valve member is engageable with an outer valve seat defined by the valve seating surface so as to control fuel flow from a first delivery chamber to at least the first nozzle outlet when the outer valve member lifts from its seat.

Abstract: A fragrance is held in one or more layers of a three-layer liquid mixture. The three layers are mutually immiscible to form an aesthetically pleasing effect while the specific gravities of the layers are adjusted so as to provide for their transfer to the atmosphere via a simple wick. Such adjustment is determined as a function of the wicking material that is used. The formulation of the mixture involves the combination of two mutually immiscible non-aqueous components that are temporarily rendered miscible during the formulation process.

Abstract: A refill is disclosed for an electronically activated dispenser of liquid volatiles, such as insecticides and fragrances. There is a bottle having a wick, a wick holder, a vent hole, an outlet, and a removable cap. When the cap is in place it covers both the wick and a vent hole. The cap seals the vent hole via an interference fit with a well adjacent the vent hole and also either a direct abutment against the vent hole or a surrounding of the vent hole. Also disclosed is a refill where the porous wick and vent hole are within defined size ranges so as to facilitate the use of a pyrethrum insecticide.

Abstract: A device adapted to release a volatile liquid into the ambient environment. The device comprises a reservoir containing a volatile liquid in the form of two layers and a first and a second capillary element, the first capillary element being porous with respect to the liquid forming the upper layer only and the second capillary element being porous with respect to the liquid of both layers.

Abstract: This wicking apparatus includes a liquid reservoir, a wick holder, and a wick. The wick holder has a top part for fitting on the reservoir neck and a bottom part for insertion into the reservoir opening, the top part being plate-formed with a central opening, and with two peripheral projections that are spaced apart and that extend downward from the plate towards the reservoir body, projections for contacting inner and outer walls of the reservoir neck, and a second projection for contacting an outer wall of the reservoir neck, the bottom part having wick supporting arms that extend downwards and have flexible end portions projecting inwardly towards the centre of the reservoir opening. The wick is step-shaped with a larger diameter part, and a smaller diameter part; the interface between them defines a shoulder which is supported and held in place by the flexible end portions of the supporting arms.

Abstract: A fragrance dispensing assembly including a container having a sealed interior chamber containing porous reeds in a fragranced liquid. At least one buoyant member is coupled to one or more of the reeds. The porous reeds, buoyant member(s) and the fragranced liquid are put in the container and placed in contact with each other prior to sealing the container. To commence use of the fragrance dispensing assembly, the sealed container is opened and the buoyant member(s) elevate the coupled porous reeds within the liquid, thus providing additional portions of the pre-soaked porous reeds to extend from the opened container and begin instant and continuous fragrance dispensing to a room upon opening the sealed container.

Abstract: A cedar oil evaporator includes: a housing having openings therein for ventilation of air; a reservoir within the housing containing cedar oil; and a carrier for wicking away the cedar oil from the reservoir for dispersing cedar oil via air that passes through the housing. Each carrier is a length of cotton twine having a diameter of one-sixteenth of an inch or smaller and a length of twelve and one-half feet or longer. The housing includes a door movable about a hinge between a first position, wherein the reservoir is accessible for removal from the housing; and a second position, wherein the reservoir is inaccessible for removal. An extent of the carrier that is received within the reservoir for immersion in the cedar oil preferably represents 10% or less of the overall length of the carrier, the remainder being randomly exposed within the interior space of the housing.

Abstract: It is a container (1) in a shape or cylinder or other shape made of glass or plastics that contains different essential oils (5) closed with a top (2) made of rubber, cork, silicon or wax, and has a wick (3) that goes through the top and it is made of linen; or has a top made of pure linen or sponge in the narrow part of the container (1), which function is to prevent essential oil from leaking but to enable its evaporation; with that there is a metallic needle (4) attached to the container (1) so that container (1) can be attached to the clothes as a brooch. This makes possible a simple, continuous and measured application of aromatherapy at all the times.

Abstract: A volatile dispenser is provided, including a reservoir containing a quantity of volatile liquid having a viscosity of no greater than 3.9 centipoises. Each of its individual components has a vapor pressure of no less than 0.008 mm Hg. The dispenser also includes an emanator fluidly coupled to the reservoir (either directly or through a wick) that is comprised of elongated oriented bonded fibers, the fibers being impermeable to the volatile material.

Abstract: A diffusion device includes a housing and an opening in the housing adapted for insertion of a container having an active material therein and a wick extending therefrom. The device further includes a heater disposed in a rear portion of the housing and spaced from the wick when a container is inserted into the housing. A vent is disposed in a front portion of the housing. An active material diffusion-interference member is disposed directly above and axially aligned with the wick when the container is inserted into the device, wherein the diffusion-interference member inhibits diffusion of the active material from the housing such that heat generated by the heater is trapped around the wick, thus increasing volatilization and dispersion of the active material from the diffusion device as compared to a diffusion device that does not have a diffusion-interference member.

Abstract: Multiple artificial wicks can be used in water or solvent based fragrance mixtures that will fully empty the mixture from the container without the need to flip the wicks. The wicks can be made from strands of woven, twisted, braided, injection molded or extruded fibers that are natural or man-made. The length to width ratio of the wick should be a minimum of 30 for effective fragrance release. The wick gets fully saturated and remains saturated while providing continuous fragrance diffusion. There is no need to flip the wick over during use to refresh the fragrance diffusion. The wicks can also be fully dyed or pigmented with color. The wicks can also be partially dyed or pigmented with color. A ceramic bisque can also be placed above the fragrance oil mixture to provide a fragrance boost when in contact with the wick.

Abstract: The present invention relates to the field of perfumery and more precisely it concerns a device, and the consumer articles associated therewith, for dispensing an active composition into the surrounding space. The device includes an active liquid, a reservoir holding the active liquid, a wick-/emanator structure composed of a wicking part and an emitting part, the latter having an evaporative surface to be directly exposed to the surrounding space when the device is activated and being housed in a moveable housing assembly, activation of the device occurring without need to removing the housing assembly and or the wick-/emanator structure, the device further comprising a rotor arranged in a manner providing for rotation of wicking or emitting parts to allow forced evaporation of the active volatile upon activation of the device.

Abstract: An aromatic odor neutralizer includes a vaporization chamber containing a wick with an end part immersed in fluid in a storage cup that is gravity fed from an airtight vessel by the use of air pathways exposed when the liquid level in the cup is reduced. The vaporization chamber is located in a dispenser housing with an internal passage between end walls and communicating with vents in the sides for aerodynamic airflow to efficiently absorb vapors from a vaporizer chamber.

Abstract: The present invention relates to the field of perfumery and more precisely it concerns a device, and the consumer articles associated therewith, for dispensing an active composition in the surrounding space. The device includes an active liquid having a specific volatility, a reservoir holding a part of the active liquid, a lid and a wick-emanator superstructure having a wicking part and an emitting part, the latter having an evaporative surface directly exposed to the surrounding space, and a specific absorbency and weight per unit of the evaporative surface.

Abstract: A wick assembly for, for example, a fragrance dispenser such as an air freshener comprises a conductive wick (8) that wicks the liquid from a source (1). The liquid is evaporated from the wick (8) when connected to a power source to heat the wick.

Abstract: The fragrance emanation system includes a container for holding preferably a fragranced liquid or gel, a housing for holding the container, and a wick. The housing contains a socket for attaching to the container, a cavity for receiving the container and a door for enclosing the container. One end of the wick protrudes from the container. An electrical circuit is included having a heater for heating the protruding end of the wick and electrical connectors coupled to the circuit to receive current from a power source to provide the current to the heater. The heater heats and evaporates the liquid within the wick, thereby accelerating the emission of vapors from the evaporated liquid. The door includes a window, a bottom and a mechanism for holding the door closed to assist in holding the container in engagement with the socket.

Abstract: The invention is generally directed to a vapor emitting device having a container, at least one liquid in the container, and a wick. The container has an interior in which the at least one liquid is disposed. The wick has a distal portion disposed in the container interior and a proximal portion. The wick is configured and positioned so as to maintain contact with the at least one liquid and allows the wick to draw the at least one liquid into and through the distal portion toward the proximal portion, thereby making the at least one liquid available for evaporation when the proximal portion is exposed to air. A change in a visible characteristic of the wick occurs upon exhaustion of the at least one liquid from the wick.

Abstract: An apparatus adapted to disseminate volatile liquid, such as a fragrance, into an atmosphere comprises a reservoir (1) containing volatile liquid and, extending into and therefrom, an essentially cylindrical liquid transfer member (4) that transfers liquid from the reservoir to an evaporating surface (6) through which the transfer member passes by means of a hole in the evaporating surface. The evaporating surface comprises a rigid sheet that extends essentially laterally from the transfer member and bears on its surface capillary channels adapted to accept liquid from the transfer member and spread it over the surface of the evaporating surface.

Abstract: A dispenser for scents and aromas is disclosed. The scent dispenser includes a hollow central body that contains a rotating shaft. A wick is wound around the shaft and extends through an opening in the top of the central body. A sealable cap is included to allow scent material to be added to the wick inside the central body. Finally, a suspension mechanism in included to allow the dispense to be suspended from a separate structure.

Abstract: An apparatus for disseminating a volatile liquid, such as a fragrance, into an atmosphere from a reservoir, dissemination being achieved by means of a transfer member in contact with the liquid and a capillary member in liquid transfer contact with the transfer member. The capillary member comprises an evaporating surface bearing primary capillary channels, at least some of these primary capillary channels being intersected by at least one secondary capillary channel, the secondary capillary channel being substantially smaller in cross-sectional area than that of the primary channels, such that liquid will flow in both primary and secondary channels.

Abstract: A fragrance disperser in one form includes a single fan that passes air over a wicked single or double fragrance. A second form has the fan reversible to provide two different airstreams that evaporate respective different fragrances one after the other. Where two fragrances are provided, the evaporation may be by respective electrical heaters. A fragrance source may be formed by two sheets joined together to form two chambers each receiving a respective wick and having respective exposed wick portions. The source may incorporate a source of electrical power. An alternative source has a reservoir for fragrance and a wick located in an air passage forming part of the source so that an air flow is guided through the passage past the wick to evaporate fragrance. Where two fragrances are provided, the fragrance sources may be located side-by-side and matching fragrances may have, for example, matching indicia on the sources so that the match can be easily determined visually.

Abstract: A fragrance disperser in one form includes a single fan that passes air over a wicked single or double fragrance. A second form has the fan reversible to provide two different airstreams that evaporate respective different fragrances one after the other. Where two fragrances are provided, the evaporation may be by respective electrical heaters. A fragrance source may be formed by two sheets joined together to form two chambers each receiving a respective wick and having respective exposed wick portions. The source may incorporate a source of electrical power. An alternative source has a reservoir for fragrance and a wick located in an air passage forming part of the source so that an air flow is guided through the passage past the wick to evaporate fragrance. Where two fragrances are provided, the fragrance sources may be located side-by-side and matching fragrances may have, for example, matching indicia on the sources so that the match can be easily determined visually.

Abstract: A refillable receptacle containing scented liquid or gel is mounted on the supply side of a heating/cooling duct system of a residential, commercial or industrial building. A wick system absorbs the scented liquid or gel from the receptacle to the top of the wick. As forced air passes through the duct system, scent/fragrance from the mounted air deodorizer is pushed through the duct system and distributed to the entire building.

Abstract: A refill for a volatile material includes a container having a reservoir portion and a neck portion. The refill further includes a plug assembly disposed within the neck portion of the container and a channel through a central portion of the plug assembly. Still further, the refill includes a porous wick extending through the channel, wherein the wick includes an upper portion extending outside the container and a lower portion disposed within the reservoir portion. A slit is formed in the lower portion of the wick to form a barb that catches on the plug assembly to prevent removal of the wick from the container.

Abstract: A liquid reservoir comprising a container (20) forming a chamber for holding the liquid (27). The container has a top wall (23) that closes the upper end of the chamber, a liquid outlet (35) in fluid communication with a lower en d of the chamber, and an air supply duct (47) through which air can enter the lower end of the chamber. In use, the reservoir finds an equilibrium position in which, due to a reduction in pressure in an air space (29) formed above the liquid (27) at the closed, upper end of the chamber, the column of liquid in the chamber is supported by atmospheric pressure acting at the opening of the air supply duct (47) to the lower end of the chamber. This opening is achieved by breaking a frangible seal (32) across the duct (47) by the axial insertion of the liquid outlet (35). While the seal was unbroken the container offered a self-contained capsule of liquid for replacement fitting with the liquid outlet portion.

Abstract: An evaporator, for use with a bottle containing a substance to be evaporated and a wick that has its lower portion disposed within the bottle and its upper portion protruding from the bottle, includes a housing in which the bottle is retained, a fan, disposed within the housing, for creating an airstream, and a louver structure, disposed downstream of the fan, for directing the airstream created by the fan upwardly and away from the upper portion of the wick. Preferably, the louver structure includes a plurality of louvers inclined at an angle between about 20 degrees to about 60 degrees relative to horizontal.

Abstract: An improved watering device comprises a cap member including a fastening portion provided at the upper side thereof for screwing with a container, and including a hollow tapered insertion element couplingly disposed at the lower side thereof and communicating with the fastening portion for forming a water passageway therein, and the cap member containing an air flowing duct extending in the air venting end of the cap member and having an air admitting end formed at the outer portion thereof for screwing with a rotating knob, wherein the air admitting end of the air flowing duct includes a tapered outer thread portion attached thereon so that as screwing with the rotating knob, an air admitting sacs between the inner and outer thread portions may be formed, thereby the outside air may flow into the air flowing duct, any by using the control member, the outflow amount of fluid may be stably regulated.

Abstract: A diffusion device includes a housing having a battery disposed therein and adapted to receive a replaceable fluid reservoir for holding a fluid, wherein the fluid reservoir includes a wick for movement of the fluid to a discharge end thereof. The diffusion device further includes a piezoelectric element energized by a power source for vibrating a perforated orifice plate disposed adjacent the discharge end of the wick, wherein the piezoelectric element develops vibratory movement to pump the fluid from the discharge end through the perforated discharge plate and into the atmosphere. A control circuit and light emitting diode (“LED”) are disposed in the housing, wherein the control circuit energizes the LED at a particular frequency when the dispenser is active and a voltage developed by the battery is above a threshold voltage.

Abstract: A battery powered diffusion device includes a housing having an internal power supply and adapted to receive a replaceable fluid container for holding a fluid, the fluid container including a wick for movement of fluid to a discharge end thereof. The diffusion device further includes a piezoelectric element that is energized by a battery to vibrate a perforated orifice plate disposed adjacent the discharge end of the wick. The piezoelectric element provides sufficient vibratory movement in a dispensing state to pump the fluid from the discharge end through the orifice place and into the atmosphere as aerosolized particles. Diameters of perforations extending through the orifice plate are between about 4.63 microns and about 5.22 microns.

Abstract: A passive dispensing device for a liquid active material includes an upper housing portion for receiving a container for holding and dispensing a liquid active material, wherein the upper housing portion includes an interior cavity and wherein the container includes a wick extending from inside the container to an area outside the container. The device further includes a lower housing portion that extends downwardly from the upper housing portion, wherein the lower housing portion defines a recess between the upper and lower housing portions and includes first and second legs that extend downwardly from the upper housing portion and outwardly from the recess.

Abstract: An interference fit assembly comprises a wick constructed of a porous polymer and a wall constructed of a polymer for interference engagement with the wick. The wick has a weight of 3.3 grams.

Abstract: A wick assembly is provided for use in a dispensing device that dispenses volatile material from a wick by heat. Two wick sections of differing material are provided in stacked fashion, with a coupler sleeve that can be used to facilitate attachment of the wick structure to a reservoir. One wick section preferably provides control over the rate of dispensing, where the other provides improved thermal resistance and resistance to clogging.

Abstract: A wick-based delivery system includes a container for holding a liquid that has an opening therein. A porous wick is positioned in the container so that a lower region of the wick is in contact with the liquid in the container and an upper region of the wick is exposed to the ambient air. The porous wick has discrete inner and outer concentric cylindrical sections, the inner cylindrical section being made of a sand-based material and the outer cylindrical section being made of a plastic material.

Abstract: A dispenser for use with an air-treating composition to be emitted includes a base having a container support and a mounting surface separate from the container support. A container is coupled to the base container support and adapted to receive the air-treating composition, and a diffuser element is coupled to the base and positioned to disperse the air-treating composition from the container into the surrounding environment. A cover is adapted for attachment to the base mounting surface. The container support remains intact when the cover is removed therefrom. The cover may include a frame for holding one of a plurality of substrates carrying different images. In addition, the base may be formed of a plastic material while the cover is formed of a ceramic material.

Abstract: A volatile dispenser is provided, including a reservoir containing a quantity of volatile liquid having a viscosity of no greater than 3.9 centipoises. Each of its individual components has a vapor pressure of no less than 0.008 mm Hg. The dispenser also includes an emanator fluidly coupled to the reservoir (either directly or through a wick) that is comprised of elongated oriented bonded fibers, the fibers being impermeable to the volatile material.

Abstract: A vapor-dispensing device that, through a delivery system, facilitates evaporation of multiple volatizable materials into an environment. In one embodiment, a common evaporative region is utilized; in another, a controller suitably controls an aspect or characteristic of the evaporation.

Abstract: A wick-based emanation device for dispensing a volatile liquid is disclosed. The dispensing device includes a housing and a fan mounted in the housing for generating an air stream used for dispersing the volatile liquid. Walls of the housing form an enclosure for mounting the fan and for receiving an exposed portion of the wick therein. A retention structure is provided for coupling the wick to the housing and securing the wick in the air stream generated by the fan. The volatile liquid migrates along the wick from the reservoir to the exterior of the container where it is evaporated from the surface of the wick by forced airflow generated by a motorized fan mounted in the housing. The wick is formed to have a width dimension W which does not exceed 1.2 times a dimension R of a blade of the fan extending from the fan axis of rotation to an edge of the fan blade farthest from the axis of rotation.