Diffuser cartridge for diffuser device

Abstract

A diffuser device includes a diffuser cartridge and a compatible diffuser housing. The cartridge includes a housing with an external electrical connector, at least one piezoelectric device electrically connected to the connector, a vessel containing a liquid scent, and a wick extending from the piezoelectric device into the liquid. The wick draws the liquid via capillary action, enabling the piezoelectric device to atomize the scent when powered. The diffuser housing includes a receiving cavity with an internal electrical connector configured to interface with the cartridge's connector, thereby establishing an electrical connection to a power source. The cartridge is removably attachable to the housing in the receiving cavity, allowing for convenient replacement and operation.

Description

DIFFUSER CARTRIDGE FOR DIFFUSER DEVICECROSS-REFERENCE TO RELATED APPLICATION(S)

[0001] This application claims priority to U.S. Provisional Application No. 63 / 676,891, filed July 29, 2024, the entire disclosure of which is hereby incorporated herein by reference.FIELD OF THE DISCLOSURE

[0002] The present disclosure relates to scent delivery devices, cartridges, and systems, which, for example, can include a diffuser that atomizes scented oils into the surrounding environment.BACKGROUND OF THE DISCLOSURE

[0003] Diffusers are commonly used to disperse scented liquid, such as oils, into the air for aromatherapy and other purposes. Traditional diffusers often require manual refilling, which can be messy, inconvenient, and hazardous. Unauthorized third-party refill cartridges can similarly lead to potential quality and safety concerns.

[0004] Pre-existing diffusers often have integrated piezoelectric elements that face significant challenges related to the failure and replacement of these components. For example, the piezoelectric elements can have varying lifetimes, leading to inconsistent performance and eventual failure. When the piezoelectric device fails, users are typically required to replace the entire diffuser, which is both expensive and wasteful.

[0005] The present disclosure aims to provide a more user-friendly solution with a replaceable cartridge that ensures ease of use, safety, and quality of a diffuser device.SUMMARY

[0006] The present disclosure relates to a diffuser cartridge designed to disperse scented liquid through atomization. The cartridge can include a cartridge housing that contains a piezoelectric device, which is electrically connected to a power source via a connector located on the exterior of the cartridge housing. Attached to the cartridge housing is a vessel filled with a liquid scent. A wick extends from the piezoelectric device into the vessel, drawing the liquid scent through capillary action. When powered, the piezoelectric device can atomize the liquid scent absorbed by the wick.

[0007] An aperture may be positioned on the top surface of the cartridge housing, allowing the atomized scent to exit. A removable cap may be attached to this aperture for sealing or protection. The piezoelectric device may be a disc, and may be positioned at an angle relative to the horizontal axis of the cartridge housing. This angle can range from 0° to 60° (e.g., 0° to 30° or 30° to 60°), and the wick may be shaped to match this orientation for optimal contact.

[0008] Additionally, the cartridge may further include a wick housing that extends into the scent vessel. The wick may be partially enclosed within a central bore of this housing, which can include side apertures to allow the liquid scent to enter and be absorbed. A biasing mechanism within the wick housing can ensure that the wick maintains direct contact with the piezoelectric device.

[0009] To prevent tampering, the cartridge housing and vessel can be sealed with a tamper-proof mechanism.

[0010] A diffuser device may comprise the diffuser cartridge and a separate diffuser housing. The diffuser housing may include a cavity designed to receive the cartridge and a second electrical connector that interfaces with the cartridge’s connector to establish a power connection. This connection may be magnetic. The power source can be internal to the housing or external, accessed via a plug that may rotate for convenience.

[0011] An input device on the exterior of the diffuser housing can allow users to control the power connection and the dispersion of scented liquid. The diffuser housing may not include a blower and may rely solely on the piezoelectric atomization for scent dispersion.DESCRIPTION OF THE DRAWINGS

[0012] For a fuller understanding of the nature and objects of the disclosure, reference should be made to the following detailed description taken in conjunction with the accompanying drawings, in which:

[0013] FIG. 1 is a perspective view of a diffuser device according to an embodiment of the present disclosure;

[0014] FIGS. 2 A and 2B are front and rear perspective views of a cartridge for a diffuser device according to the present disclosure;

[0015] FIG. 3 is a partial cross-sectional view of a cartridge for a diffuser device according to the present disclosure;

[0016] FIGS. 4 A and 4B are top and bottom perspective views of a slider for a cartridge according to an embodiment of the present disclosure;

[0017] FIGS. 5A and 5B are top and bottom perspective views of a diffuser housing for a cartridge according to an embodiment of the present disclosure;

[0018] FIG. 6 is an exploded view of a diffuser housing according to an embodiment of the present disclosure;

[0019] FIG. 7A is a schematic illustration of an input device on the diffuser device.

[0020] FIG. 7B is a schematic illustration of a remote input device.

[0021] FIGS. 8A and 8B illustrate a process of assembling a cartridge according to an embodiment of the present disclosure; and

[0022] FIGS. 9 A to 9D illustrate a process of installing a cartridge into a diffuser device according to an embodiment of the present disclosure.

[0023] FIG. 10 is a partial cross-sectional view of another embodiment of cartridge for a diffuser device according to the present disclosure.

[0024] FIG. 11 A and 1 IB are front and rear perspective views of a cartridge for a diffuser device according to an embodiment of the present disclosure.

[0025] FIG. 12A and 12B are partial cross-sectional views of a cartridge for a diffuser device according to an embodiment of the present disclosure.

[0026] FIGS. 13A to 13C are front, bottom, and side perspective views of a slider for a cartridge according to an embodiment of the present disclosure.

[0027] FIG. 14A and 14B are top and bottom perspective views of a cartridge housing for a cartridge according to an embodiment of the present disclosure.

[0028] FIG. 15A and 15B are exploded views illustrating an exemplary process of assembling a cartridge according to an embodiment of the present disclosure.

[0029] FIG. 16 is an exploded view of a diffuser housing and cartridge according to an embodiment of the present disclosure.

[0030] FIGS. 17A to 17D illustrate an exemplary process of installing a cartridge into a diffuser housing according to an embodiment of the present disclosure.

[0031] FIG. 18 is a cross-sectional view of a cartridge according to an embodiment of the present disclosure.

[0032] FIG. 19 is a perspective view of a cartridge with a protective cap according to another embodiment of the present disclosure.

[0033] FIG. 20 is a perspective view of a cartridge installed into a diffuser device of the present disclosure.

[0034] FIG. 21 is a perspective view of a cartridge housing of a cartridge with a protective cap removed according to an embodiment of the present disclosure.

[0035] FIG. 22 is a bottom perspective view of a cartridge housing and a wick housing of a cartridge according to an embodiment of the present disclosure.

[0036] FIG. 23 is a top perspective view of a wick housing of a cartridge according to an embodiment of the present disclosure.

[0037] FIG. 24 is a cross-sectional view of a wick housing according to another embodiment of the present disclosure.DETAILED DESCRIPTION OF THE DISCLOSURE

[0038] FIG. 1 is a perspective view of a diffuser device 100 according to an embodiment of the present disclosure. The diffuser device 100 can include a diffuser housing 110 and a cartridge 120 configured to removably attach to and from the diffuser housing 110. FIG. 1 shows a front door 111 of the diffuser housing 110 open, to illustrate the cartridge 120 in an attached state. While in an attached state, the diffuser device 100 can atomize a liquid scent carried by the cartridge 120, and disperse the scent through an aperture 112 of the diffuser housing 110 into the surrounding environment.

[0039] FIG. 2A and FIG. 2B are front and rear perspective views of a cartridge 120 for a diffuser device 100 according to an embodiment of the present disclosure. The cartridge 120 can include a cartridge housing 130, a wick 140, and a vessel 160 containing a liquid scent 161.

[0040] Pre-existing diffusers with integrated piezoelectric elements often face significant challenges related to the failure and replacement of these components. The piezoelectric elements can have varying lifetimes, leading to inconsistent performance and eventual failure. When the piezoelectric device fails, users are typically required to replace the entire diffuser, which is both expensive and wasteful. To address this issue, embodiments of the present disclosure can locate the piezoelectric device within a replaceable cartridge. This design can allow the piezoelectric device to be replaced with each new cartridge, ensuring consistent performance and extending the overall lifespan of the diffuser.

[0041] FIG. 3 is a partial cross-sectional view of a cartridge 120 for a diffuser device 100 according to an embodiment of the present disclosure. The cartridge 120 can include a slider 180 that is slidably received within the cartridge housing 130. The at least one piezoelectric device 150, which can be for example a single piezoelectric disc, can be received within the slider 180. The slider 180 can hold a piezoelectric device 150 in direct contact with the wick 140, ensuring efficient transfer of the liquid scent 161 in the vessel 160 to the piezoelectric device 150 for atomization. As an example, the wick 140 can draw the liquid scent 161 to the piezoelectric device 150 through capillary action. Once the liquid scent 161 is drawn and atomized via the piezoelectric device 150, the atomized scent can pass through small apertures (not shown) in the piezoelectric device, and then through aperture 121 of the cartridge 120, and out through the corresponding aperture 112 of the diffuser housing 110 into the surrounding environment.

[0042] The vessel 160 can mate with the cartridge housing 130 via a threaded connection (e.g. cartridge threads 131 and vessel threads 162), allowing the cartridge housing 130 to be twisted securely onto the vessel 160. Alternatively, the vessel 160 can be secured with a mechanical snap connection, an adhesive, or the like. One or more gaskets 163 can be provided to ensure a tight seal between the vessel 160 and the cartridge housing 130.

[0043] The slider 180 can also include an electrical connector 190 that mates with a corresponding electrical connector 195 (shown in FIG. 6) in the diffuser housing 110. In an attached state, an electrical connection between the electrical connector 190 of the cartridge120 and the electrical connector 195 of the diffuser housing 110 can be established to drive the piezoelectric device 150. The piezoelectric device 150 can be controlled via one or more processors (not shown) disposed within the diffuser housing 110.

[0044] In one embodiment, the electrical connectors 190, 195 may each include one or more magnets 192 to assist with alignment and securement of the respective electrical connectors 190, 195 to one another. The magnets 192 can ensure proper orientation by using two or more magnets with different pole orientations, so that the connector aligns and attaches correctly when the opposite poles (north and south) of the magnets attract each other. In this way, the electrical contacts 191 of the electrical connector 190 may not protrude, or only protrude minimally, from the face of the slider 180 and / or the face of the cartridge 120.

[0045] Alignment and securement of the respective electrical connectors 190, 195 can also or alternatively be achieved mechanically, such as with mating male pins / pro tensions and female sockets to ensure a secure electrical connection through conductive contacts. Guiding features like keys or chamfered edges can help align the respective mating conducting parts correctly, preventing incorrect insertion.

[0046] FIG. 4A and FIG. 4B are top and bottom perspective views of a slider 180 for a cartridge according to an embodiment of the present disclosure. The slider 180 may have a slider housing 181, including a planar top 180a with an aperture 182 disposed therein. The piezoelectric device 150 can be received within a recess 183 located on an opposite bottom 180b of the slider housing 181, and held mechanically (e.g., a snap fit), with an adhesive, or the like. The aperture 182 can be centered, for example concentrically, with a corresponding aperture 121 of the cartridge housing 130 (shown in FIG. 5B) and / or a corresponding aperture 112 of the diffuser housing 130 (shown in FIG. 6).

[0047] In order to ensure proper orientation of the slider 180 into the cartridge housing 130, the slider 180 may have one or more mechanical design features, such as the illustrated chamfered edges 184. Besides or in addition to chamfered edges 184, the slider 180 may be irregularly or asymmetrically shaped, and / or have a key and slot mechanism, detent(s), visual indicator(s), guide rails or tracks or the like to achieve a similar purpose.

[0048] FIG. 5A and FIG. 5B are top and bottom perspective views of a cartridge housing 130 for a cartridge 120 according to an embodiment of the present disclosure. The cartridge housing 130 may include threads 131 or other mechanical features for securing thevessel 160 to the cartridge housing 130 as previously described. The cartridge housing 130 may also include a slot 132 for receiving the slider 180 therein. The cartridge housing can also have a sleeve 133 for receiving the wick 140 therein.

[0049] The cartridge 120 can be constructed to be sealed, preventing the replacement or refurbishment of its components, including the piezoelectric device 150 and the liquid scent 161. This approach can enhance the consistency and quality of the cartridges, providing a more reliable and user-friendly solution. For example, the cartridge 120 may be tamper-proof to prevent a user from attempting to replace components of the cartridge 120, such as the piezoelectric device 150 and / or to refdl the liquid scent 161. For example, the cartridge 120 may have a tamper-proof mechanism, such a mechanical lock, a seal, or an adhesive. In one example, the slider 180 can have a mechanical lock that prevents the slider 180 from being removed from the slot 132. An example of suitable a mechanical lock is a notch or recess along one or more mating edges of the slider 180 and slot 132, that mates with a corresponding latch on the opposite edge of the slider 180 and slot 132. When the slider 180 is inserted into the slot 132, the latch(es) engage with the notch(es), locking the slide in place. In another example, a seal or adhesive may prevent the slider 180 from being removed from the slot 132 once inserted. The vessel 160 can similarly have a tamper-proof mechanism that prevents the vessel 160 from being removed from the cartridge housing 130 once attached. As an example, a mechanical lock, seal, or adhesive may be provided between the cartridge housing 130 and the vessel 160.

[0050] In each of the above examples of a tamper-proof mechanism, component parts of the cartridge 120 (e.g. the vessel 160 and / or the slider 180) are affixed to the cartridge housing 130 in a manner that prevents them from being removed by a user. According to certain embodiments, the tamper-proof mechanism is configured to break in the event that a user removes a component part of the cartridge 120 from the cartridge housing 130. After the tamper-proof mechanism is broken, the component part (e.g. the vessel 160 and / or the slider 180) may not be securable to the cartridge housing 130. As an example, the tamper-proof mechanism might be required for the component part of the cartridge housing 130 to be affixed to the cartridge housing 130 or breaking the tamper-proof mechanism could damage the mechanical interface between the component part of the cartridge housing 130 and the housing. For example, breaking the tamper-proof mechanism could damage and break threads 131, 162 or the adjoining surfaces of the slider 180 and slot 132. This design can help ensure theintegrity and safety of the cartridge components, including the piezoelectric device 150 and / or the liquid scent 161.

[0051] FIG. 6 is an exploded view of a diffuser housing 110 according to an embodiment of the present disclosure. Within the diffuser housing 110, a blower 170 can be disposed to force air through the diffuser, and out aperture 112 of the diffuser housing 110. The blower 170 can be disposed in a rear of the diffuser housing, and fed air through an intake 113 disposed in a rear wall 114 of the housing 110. The blower 170 may include a fan that forces air through a channel 171. The channel 171 can extend through the housing 110 and to the cartridge 120. When the cartridge 120 is attached to the diffuser housing 110, the piezoelectric device 150 can be driven to atomize the liquid scent 161 through aperture 121 of the cartridge 120 and into the forced air. The atomized liquid scent 161 can then be dispersed into the surrounding environment through the aperture 112 of the diffuser housing 110. In some embodiments, no blower 170 may be provided in the diffuser housing 110, such that the atomized liquid scent 161 is passively dispersed into the surrounding environment without the force of a fan or other element.

[0052] FIG. 7A and FIG. 7B are schematic views of the diffuser device 100 being controlled with an input device. FIG. 7A illustrates an embodiment of the present disclosure with the diffuser device 100 having an input device, namely a plurality of control buttons 115, on the diffuser housing 110. The control buttons 115 can have various control settings that enable users to set personalized spray intervals and modes, allow for remote operation via an app, and power on / off. The diffuser device 100 may also have one or more indicator lights 116 to indicate the power status, power level (e.g., if battery operated), connection status (e.g., with a remote device), level of liquid in the cartridge 120 (e.g., either a relative amount or indicate an empty cartridge 120 that requires replacement), and / or spray mode of the device. The lights 116 may also or alternatively be used to control aesthetics of the device, for example, by changing color. The diffuser device 100 may also have one or more light sensors 117. The light sensor(s) 117 can allow for operation of the diffuser device 100 to change based upon a detected light level. For example, the diffuser device 100 may be configured to only dispense scent if the light level exceeds a threshold (e.g. when there is daylight or interior lights are on), and not to dispense scent if the light level is below the threshold.

[0053] FIG. 7B is a schematic illustration of the input device being a remote device 300, such as a mobile device, remote, or the like. As an example, the remote device 300 canbe a mobile device having software (e.g., an app) that is capable of controlling the diffuser device 100 via wireless communication (e.g., Bluetooth, Wi-Fi, or the like) with the diffuser device 100. The remote device 300 may have the ability to program various spray intervals, modes, and schedules; control the aesthetics (e.g. light or other configuration) of the diffuser device 100; and / or indicate a status of the diffuser device 100 (e.g., on / off, battery level, etc.) and / or its cartridge 120 (e.g., a level of liquid scent).

[0054] FIG. 8A and FIG. 8B illustrate a process of manufacturing or assembling a cartridge 120 according to an embodiment of the present disclosure. The slider 180 carrying a piezoelectric device 150 and electrical connector 190 can be inserted into the slot 132 of the cartridge housing 130. A tamper-proof mechanism may prevent the slider from being removed from the cartridge housing 130 once inserted. The wick 140 can be inserted into the sleeve 133 of the cartridge housing 130, such that the wick 140 is in direct contact with the piezoelectric device 150. As illustrated in FIG. 8B, the cartridge housing 130 carrying the wick 140 and / or slider 180 may be attached to the vessel 160 carrying liquid scent 161 (not shown). A tamperproof mechanism may prevent the vessel 160 from being removed from the cartridge housing 130.

[0055] FIGS. 9 A to 9D illustrate a process of installing a cartridge 120 into a diffuser device 100 according to an embodiment of the present disclosure. Starting with FIG. 9A, a diffuser device 100 is provided. The door 111 of the diffuser device 100 can then be opened as illustrated in FIG. 9B. The cartridge 120 is then aligned with a receiving cavity 118 of the diffuser housing 110 as illustrated in FIG. 9C. FIG. 9D shows the cartridge 120 in an attached state. The door 111 can then be closed (as shown in FIG. 9A) for operation of the diffuser device 100.

[0056] FIGS. 10 to 18 illustrate a diffuser device 200 according to another embodiment of the present disclosure. As shown in FIG. 10, the diffuser device 200 can include a diffuser housing 210 and a cartridge 220 configured to removably attach to and from the diffuser housing 210 via a housing mount 211. While in an attached state, the diffuser device 200 can atomize a liquid scent carried by the cartridge 220, and disperse the scent into the surrounding environment.

[0057] FIG. 11 A and FIG. 1 IB are front and rear perspective views of a cartridge 220 for a diffuser device 200 according to the present disclosure. The cartridge 220 can include a cartridge housing 230, a wick 240, and a vessel 260 containing a liquid scent 261.

[0058] FIG. 12A and FIG. 12B are partial cross-sectional views of a cartridge 220 for a diffuser device 200 according to the present disclosure. The cartridge 220 can include a slider 280 that is slidably received within the cartridge housing 230. The at least one piezoelectric device 250, which can be for example a single piezoelectric disc, can be received within the slider 280. The slider 280 can hold a piezoelectric device 250 in direct contact with the wick 240, ensuring efficient transfer of the liquid scent 261 in the vessel 260 to the piezoelectric device 250 for atomization. As an example, the wick 240 can draw the liquid scent 261 to the piezoelectric device 250 through capillary action. Once the liquid scent 261 is drawn, and atomized via the piezoelectric device 250, the atomized scent is dispersed into the surrounding environment.

[0059] The cartridge 220 can include a damper 221 designed to open or close a vent 222, including partial opening. The damper 221 can allow atmospheric pressure to enter the vessel 260, thereby preventing the buildup of pressure (which can create a vacuum force) during use of the diffuser device 200. In the illustrated embodiment, the damper 221 is controlled via a slide mechanism 223. The slide mechanism 223 can be moved from one side, in which the vent 222 is fully open, to another side, in which the vent 222 is fully closed, or to any position therebetween, in which the vent 222 is partially open. By controlling the degree to which the vent 222 is open, the amount of atomized scent released can be increased or decreased. Additionally, the vent 222 can facilitate the drainage of liquid scent 261 dispensed from the piezoelectric device 250 back into the vessel 260. For transportation of a cartridge 220, the vent 222 can be placed in a closed position to prevent any leakage of liquid scent 261.

[0060] FIGS. 13A to 13C are front, bottom, and side perspective views of a slider 280 for a cartridge 220 according to an embodiment of the present disclosure. The slider 280 may have a slider housing 281 with an aperture 282 disposed therein. The slider 280 can carry the piezoelectric device 250. For example, the piezoelectric device 250 can be held mechanically (e.g., a snap fit or within a recess), with an adhesive, or the like. In order to ensure proper orientation of the slider 280 into the cartridge housing 230, the slider 280 may have one or more mechanical design features, such as chamfered edges or the slider 280 may be irregularlyor asymmetrically shaped, and / or have a key and slot mechanism, detent(s), visual indicator(s), guide rails or tracks or the like to achieve a similar purpose.

[0061] The slider 280 can also include an electrical connector 290 that mates with a corresponding electrical connector 295 (shown in FIG. 17A) in the diffuser housing 210. In an attached state, an electrical connection can be established to drive the piezoelectric device 250. The piezoelectric device 250 can be controlled via one or more processors (not shown) disposed within the diffuser housing 210.

[0062] The piezoelectric device 250 can be angled to urge atomized scent in a particular (e.g., forward) direction from the device. FIG. 18 illustrates an embodiment where the piezoelectric device 250 is oriented in the cartridge 220 such that it lies along axis 250’ that is angled relative to the horizontal axis A of the cartridge 220. In this way, scent can be atomized in the direction of axis B (e.g., generally normal to the piezoelectric device 250). This can allow for scent to be forced from the diffuser device 200 without a blower, fan, or the like. It is also contemplated that an angled piezoelectric device can assist with directing the scent with a blower, fan or the like. The angle of the piezoelectric device 250 can be adjusted depending on the desired application, but can be oriented such that axis B lies at an angle between 0° and 90° or in the range of 30° and 60° relative to the horizontal axis A. In one specific example, the piezoelectric device 150 is oriented such that the angle is 45° relative to horizontal axis A.

[0063] FIG. 14A and FIG. 14B are top and bottom perspective views of a cartridge housing 230 for a cartridge 220 according to an embodiment of the present disclosure. The cartridge housing 230 may have mating mechanical features 231 for mechanically securing the vessel 260 to the cartridge housing 230 as previously described. The cartridge housing 230 may also include a slot 232 for receiving the slider 280 therein. The cartridge housing 230 can include a sleeve 233 (shown in FIG. 12 A) designed to receive the wick 240. Additionally, the slider 280 may feature a sleeve (not shown), which can either complement or replace the sleeve 233 of the cartridge housing 230.

[0064] FIG. 15A and FIG. 15B are exploded views, which illustrate an example of assembling a cartridge 220. In FIG. 15A, a slide mechanism 223, slider 280, and wick 240 are attached to the cartridge housing 230. It is contemplated that the slider 280 can be attached to the cartridge housing 230 via a mechanical snap connection, fasteners, an adhesive, threadedconnection or the like. In the illustrated example, a detachable retaining structure 283 is provided, which can serve to lock the slider 280 relative to the cartridge housing 230.

[0065] FIG. 15B illustrates the vessel 260 being attached to the cartridge housing 230. According to embodiments of the present disclosure, the vessel 260 can be attached to the housing 230 with a mechanical snap connection, fasteners, an adhesive, threaded connection or the like, as previously described with respect to the first embodiment of a diffuser device 100.

[0066] The cartridge 220 can be constructed to be sealed, preventing the replacement or refurbishment of its components, including the piezoelectric device 250 and the liquid scent 261. This approach can enhance the consistency and quality of the cartridges, providing a more reliable and user-friendly solution. For example, the cartridge 220 may be tamper-proof to prevent a user from attempting to replace components of the cartridge 220, such as the piezoelectric device 250 and / or to refill the liquid scent 261. For example, the cartridge 220 may have a tamper-proof mechanism, such a mechanical lock, a seal, or an adhesive. In one example, the slider 280 can have a mechanical lock that prevents the slider 280 from being removed from the slot 232. An example of suitable a mechanical lock is a notch or recess along one or more mating edges of the slider 280 and slot 232, that mates with a corresponding latch on the opposite edge of the slider 280 and slot 232. When the slider 280 is inserted into the slot 232, the latch(es) engage with the notch(es), locking the slide in place. In another example, a seal or adhesive may prevent the slider 280 from being removed from the slot 232 once inserted. The vessel 260 can similarly have a tamper-proof mechanism that prevents the vessel 260 from being removed from the cartridge housing 230 once attached. As an example, a mechanical lock, seal, or adhesive may be provided between the cartridge housing 230 and the vessel 260.

[0067] In each of the above examples of a tamper-proof mechanism, component parts of the cartridge 220 (e.g., the vessel 260 and / or the slider 280) are affixed to the cartridge housing 230 in a manner that prevents them from being removed by a user. According to certain embodiments, the tamper-proof mechanism is configured to break in the event that a user removes a component part of the cartridge 220 from the cartridge housing 230. After the tamper-proof mechanism is broken, the component part (e.g., the vessel 260 and / or the slider 280) may not be securable to the cartridge housing 230. As an example, the tamper-proof mechanism might be required for the component part of the cartridge housing 230 to be affixedto the cartridge housing 230 or breaking the tamper-proof mechanism could damage the mechanical interface between the component part of the cartridge housing 230 and the housing. For example, breaking the tamper-proof mechanism could damage and break the adjoining surfaces of the slider 280 and slot 232. This design can help ensure the integrity and safety of the cartridge components, including the piezoelectric device 250 and / or the liquid scent 261.

[0068] FIG. 16 is an exploded view of a diffuser housing 210 and cartridge 220 according to an embodiment of the present disclosure. The diffuser housing 210 can include a receiving cavity 218 for receiving the cartridge 220. Circuit boards 219A and 219B including one or more processors mounted thereon can be provided to control the diffuser device 200 as generally described herein. The circuit boards 219A and 219B can be mounted to a housing mount 211. The diffuser device 200 can also include rotatable plug 270 designed to allow the diffuser housing 210 to be reoriented relative to an electrical socket. As an example, the rotatable plug 270 can include a swivel mechanism that permits rotation (e.g., 180-degree, 360- degree, etc.), enabling a user to adjust the orientation of the diffuser device 200 relative to an electrical socket. The plug 270 can either be equipped with a locking mechanism to secure the desired position. As an example, the locking mechanism can be a friction fit, latch, or other method that prevents unintended movement. The plug 270 may include a detent system that uses spring-loaded balls or pins that engage with notches or grooves so that the plug 270 rotates in 90-degree increments. The electrical contacts 271 of the plug 270 can be configured to maintain a continuous connection regardless of the plug’s rotational position. In the illustrated embodiment, the plug 270 is disposed directly on the diffuser housing 210. However, in other embodiments, the plug 270 may be connected to the diffuser housing 210 via a power cable (not shown), so that the diffuser device 200 may be located away from the electrical socket (e.g., placed on a table).

[0069] As described herein, the piezoelectric device 250 may be electrically connected to a power source via a connection between the electrical connector 291 of the cartridge housing 230 and the electrical connector 295 of the diffuser housing 210 when the cartridge 220 is received by the receiving cavity 218 of the diffuser housing 210. In the illustrated embodiment, the power source is an external power source, and the plug 270 electrically connects the electrical connector 295 of the diffuser housing 210 to the electrical socket. However, in other embodiments, the power source may be an internal power source (e.g., a battery) provided within the diffuser housing 210. The battery may be charged by an externalpower source using a suitable power cable / connection to an electrical socket. Accordingly, the diffuser device 200 may be a portable, battery-powered device. In some embodiments, another battery may be provided in the cartridge 220 (e.g., within the cartridge housing 230), which may be charged by the battery provided in the diffuser housing 210 and / or by an external power source via the connection between the electrical connector 291 of the cartridge housing 230 and the electrical connector 295 of the diffuser housing 210. Accordingly, the cartridge 220 may operate independent of the diffuser housing 210 with the power stored on the battery of the cartridge 220.

[0070] In the illustrated embodiment, the diffuser device 200 does not have the blower 170 of diffuser device 100, but rather relies on the piezoelectric device 150 to directly atomize the liquid scent to dispense scent into the environment (i.e., without the assistance of forced air from the diffuser device 200). It is therefore contemplated that either diffuser device 100, 200 may be configured to operate with or without a blower.

[0071] FIGS. 17A to 17D illustrate a process of installing a cartridge 220 into a diffuser housing 210 according to an embodiment of the present disclosure. Starting with FIG. 17A, a diffuser housing 210 is provided. The cartridge 220 is then aligned with a receiving cavity 218 of the diffuser housing 210 as illustrated in FIG. 17B. FIG. 17C shows the cartridge 220 being slid within the receiving cavity 218. FIG. 17D shows the cartridge 220 in a fully attached state, in which the diffuser device 200 can be operated to dispense an atomized scent.

[0072] As illustrated in FIG. 18, the piezoelectric device 250 may be angled to urge atomized scent into a particular (e.g., forward) direction from the diffuser device 200. FIG. 18 illustrates an embodiment where the piezoelectric device 250 is oriented in the cartridge 220 such that it lies along axis 250’ that is angled relative to the horizontal axis A of the cartridge 220. In this way, scent can be atomized in the direction of axis B (e.g., generally normal to the surface of the piezoelectric device 250). This can allow for scent to be forced from the diffuser device 200 without a blower, fan, or the like. It is also contemplated that an angled piezoelectric device 250 can assist with directing the scent into forced air from a blower, fan or the like. The angle of the piezoelectric device 250 can be adjusted depending on the desired application, or be mechanically adjustable via an adjustment mechanism (not shown). According to certain embodiments, the piezoelectric device 250 can be oriented such that axis B lies at an angle between 0° and 90° or in the range of 30° and 60° relative to the horizontal axis A. In the illustrated example, the piezoelectric device 250 is oriented such that the angleis 45° relative to horizontal axis A. However, it may be advantageous for the piezoelectric device 250 can be oriented such that the angle is between 3° and 25° relative to horizontal axis A for certain applications, as illustrated in FIGS. 19-21. As illustrated in FIG. 18, the wick 240 may have an end that is angled to mate with the angled surface of the piezoelectric device 250.

[0073] FIGS. 19 to 21 illustrate a diffuser device 300 and cartridge 320 according to another embodiment of the present disclosure. The diffuser device 300 is similar to those shown in FIGS. 10 to 18, but the cartridge 320 includes a protective cap 334. The protective cap 334 is configured to cover the piezoelectric device 350, thereby protecting the piezoelectric device 350 and / or sealing the cartridge 320, which can help prevent liquid scent from spilling during transportation or evaporating during periods of nonuse.

[0074] FIG. 19 shows a perspective view of a cartridge 320 with the protective cap 334 in place. FIG. 20 illustrates the cartridge 320 installed into the diffuser device 300. In comparison to the embodiment illustrated in FIGS. 10-18, the piezoelectric device 350 in FIGS. 19 and 20 is positioned at a lower angle, such as 20 degrees or less relative to a horizontal axis. As previously explained, the angled piezoelectric device 350 can assist in directing the atomized scent and may reduce the need for additional airflow mechanisms to disperse scent. The protective cap 334 also enhances safety and portability by minimizing the risk of leakage and exposure to the liquid scent 361. FIG. 21 illustrates the protective cap 334 removed from the cartridge housing 330, thereby exposing the piezoelectric device 350 for operational use of dispensing scent.

[0075] FIGS. 22 to 24 illustrate an additional embodiment of the cartridge housing 330 that features a wick housing 335 that receives a wick 340 therein. FIG. 22 illustrates the wick housing 335 attached to the cartridge housing 330, and receiving a wick 340 therein (visible through apertures 336). The apertures 336 in the wick housing 335 can allow liquid scent to enter the housing and be absorbed by the wick 340.

[0076] FIG. 23 illustrates an embodiment of the wick housing 335. The wick housing 335 can include a recess 337 for the piezoelectric device 350 (not shown) to be seated therein. The wick 340 can be received within the central bore 338.

[0077] As illustrated in FIG. 24, the wick housing 335 can be configured to provide a biasing force that urges the wick into direct contact with the piezoelectric device 350. This bias can be achieved through a biasing mechanism 339 such as a spring-loaded sleeve,compressive fit, or resilient material within the wick housing 335. By maintaining contact between the wick 340 and the piezoelectric device 350 with the biasing mechanism 339, the efficiency of liquid scent transfer and / or atomization can be improved. This configuration can help ensure that the wick 340 remains properly seated against the surface of the piezoelectric device 350, even during movement or vibration, thereby enhancing the consistency and reliability of scent dispersion. It is contemplated that the wick 340 can be biased with alternative structures, such as spring-loaded retainers, compressive foam inserts, or resilient clips that urge the wick 340 into contact with the piezoelectric device 350 without requiring a surrounding wick housing.

[0078] Although the present disclosure has been described with respect to one or more particular embodiments, it will be understood that other embodiments of the present disclosure may be made without departing from the spirit and scope of this disclosure. The various features and embodiments described in this application can be combined in any manner, and such combinations are considered to be within the scope of the invention. For example, features from one embodiment can be incorporated into another embodiment, and vice versa. This includes, but is not limited to, the substitution, addition, or omission of components, steps, or elements. The specific examples provided in this application are provided for illustrative purposes and should not be construed as limiting.

Claims

WHAT IS CLAIMED IS:

1. A diffuser cartridge comprising: a cartridge housing; a first electrical connector disposed on an exterior surface of the cartridge housing and configured to electrically connect to a power source; at least one piezoelectric device disposed within the cartridge housing and electrically connected to the first electrical connector, the at least one piezoelectric device being configured to electrically connect to the power source via the first electrical connector; a vessel connected to the cartridge housing and containing a liquid scent; and a wick extending from the at least one piezoelectric device in the cartridge housing at least partially into the liquid scent in the vessel and configured to draw the liquid scent from the vessel via capillary action; wherein the at least one piezoelectric device is configured to atomize the liquid scent from the wick driven by an electrical connection between the at least one piezoelectric device and the power source.

2. The diffuser cartridge of claim 1, wherein an aperture is defined on a top surface of the cartridge housing, and the at least one piezoelectric device is configured to atomize the liquid scent out of the aperture.

3. The diffuser cartridge of claim 2, further comprising a cap, the cap being removably attached to the cartridge housing in the aperture.

4. The diffuser cartridge of claim 1, wherein the at least one piezoelectric device comprises at least one piezoelectric disc.

5. The diffuser cartridge of claim 1, wherein the wick is in direct contact with the at least one piezoelectric device.

6. The diffuser cartridge of claim 1, wherein the at least one piezoelectric device is disposed within the cartridge housing along an axis that is at an angle relative to a horizontal axis of the cartridge housing.

7. The diffuser cartridge of claim 6, wherein the angle between the axis of the at least one piezoelectric device and the horizontal axis of the cartridge housing is between 30° and 60°.

8. The diffuser cartridge of claim 6, wherein the angle between the axis of the at least one piezoelectric device and the horizontal axis of the cartridge housing is between 3° and 25°.

9. The diffuser cartridge of claim 6, wherein an end of the wick in contact with the at least one piezoelectric device is angled to match the angle between the axis of the at least one piezoelectric device and the horizontal axis of the cartridge housing.

10. The diffuser cartridge of claim 1, further comprising a wick housing connected to the cartridge housing and extending into the vessel, the wick being provided at least partially within a central bore of the wick housing.

11. The diffuser cartridge of claim 10, wherein at least one aperture is defined on a circumferential surface of the wick housing to allow the liquid scent to enter the wick housing to be absorbed by the wick.

12. The diffuser cartridge of claim 10, wherein the wick housing includes a biasing mechanism provided within the central bore between a bottom surface of the wick housing and an end of the wick, the biasing mechanism being configured to urge the wick into direct contact with the at least one piezoelectric device.

13. The diffuser cartridge of claim 1, wherein the cartridge housing is sealed with the vessel with a tamper-proof mechanism.

14. A diffuser device comprising: the diffuser cartridge of any one of claims 1 to 13; anda diffuser housing including a receiving cavity and a second electrical connector disposed on an interior surface of the receiving cavity, the second electrical connector being configured to electrically connect to the power source; wherein the diffuser cartridge is configured to removably attach to the diffuser housing within the receiving cavity to connect the first electrical connector to the second electrical connector and establish the electrical connection between the at least one piezoelectric device and the power source.

15. The diffuser device of claim 14, wherein at least one of the first electrical connector and the second electrical connector includes a magnetic connector.

16. The diffuser device of claim 14, wherein the power source is provided within the diffuser housing.

17. The diffuser device of claim 14, wherein the power source is an external power source, and the diffuser housing further includes plug electrically connected to the second electrical connector and configured to connect to an electrical socket of the external power source.

18. The diffuser device of claim 17, wherein the plug is rotatable relative to the diffuser housing.

19. The diffuser device of claim 14, further comprising an input device provided on an exterior surface of the diffuser housing, wherein the input device is configured to control the electrical connection between the at least one piezoelectric device and the power source.

20. The diffuser device of claim 14, wherein the diffuser housing does not include a blower configured to disperse the atomized scent.

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