Foam inhalers and cartridges

Abstract

A foam inhaler (874) for delivering foam to be inhaled by a user is disclosed. The foam inhaler (874) includes a foam generating element for generating foam, an outlet (882) for delivering foam to a user, and a fluid flow path providing fluid communication between the foam generating element and the outlet (882). Foam is generated by the foam generating element and flows through the fluid flow path to the outlet (882) for inhalation by a user.

Description

[Technical Field]

[0001] The present invention relates to inhalation devices. More particularly, the present invention relates to foam inhalation devices, and in particular to stable foam inhalation devices. Although the device is described as an inhalation device, it may also be considered a consumption device, an inhalation device, an exhalation device, or a tobacco industry foam device. [Background technology]

[0002] Inhalation devices typically allow a user to inhale or ingest a substance or compound. Such substances may have a variety of effects on the user, such as medicinal, therapeutic, stimulating, relaxing, or pleasurable effects. For example, a user may inhale a drug or a tobacco component such as nicotine.

[0003] Conventional techniques for consuming or inhaling compounds such as nicotine are based on burning tobacco and inhaling the resulting smoke either directly, as with cigarettes, or through water, as with shisha and hookah. However, health concerns related to smoke inhalation have created a need for alternatives for non-smokers to inhale the compounds.

[0004] Typical alternatives include vaporizers and e-cigarettes, which heat substances to produce vapor, but there are health concerns surrounding vaporizers.

[0005] Medicinal inhalers are well known, however, such inhalers rapidly force an aerosol into the user's respiratory system, and therefore require the user to inhale through the device over an extended period of time, providing an experience quite different from the repeated, gradual act of smoking.

[0006] It is therefore desirable to provide a means of producing a substance for consumption or ingestion that can be inhaled or inhaled via the user's breath over an extended period of time, without the need for the use of a vaporizer or combustion. Such alternatives could find application not only in the food and beverage industry, but also in the pharmaceutical, health and physical education sectors.

[0007] The present invention seeks to provide a solution to these problems. Summary of the Invention

[0008] According to a first aspect of the present invention, there is provided a foam inhaler (device) for dispensing foam to be inhaled by a user, the foam inhaler comprising the following components: a foam generating element receiver; a foam generating element for generating foam; an outlet for dispensing foam to a user; and a fluid flow path fluidly connecting the foam generating element receiver and the outlet (the foam generating element flows through the fluid flow path to the outlet to generate foam for inhalation by the user).

[0009] Depending on the application, the device may also be described as a foam consumption device, a foam sucking device, a foam dispensing device, or a tobacco industry foam device.

[0010] Preferably, the device may further comprise a foam volume delivery control element for limiting the volume of foam delivered by the outlet, thereby slowing delivery of foam to the user, for example through friction, reducing the volume of foam available to the user and consequently allowing the user to inhale foam over a longer period of time.

[0011] Advantageously, the foam volume delivery control element may be located at the outlet.

[0012] Beneficially, the foam volume dispensing control element may be a partial barrier that blocks a portion of the cross-sectional area of ​​the fluid flow path.

[0013] Optionally, the partial partition may be made of a porous material with multiple pores less than 2 mm in diameter. The multiple pores provide more friction to the foam than a single pore, thereby more effectively slowing the user's consumption rate. While smaller pores may provide more friction, the pores are preferably larger than the average diameter of the foam to maintain the texture of the foam.

[0014] In a preferred embodiment, the partial partition wall may be made of sintered metal. Further, the partial partition wall may be made of sintered steel. Sintered metal, and in particular sintered steel, provides a suitable porous material.

[0015] Preferably, the device may further comprise an air inlet in fluid communication with the fluid flow path between the outlet and the foam-generating element receptacle, the air inlet being spaced apart from and laterally disposed about the outlet. The air inlet allows air to be introduced into the fluid flow path to dilute the foam, thereby diluting certain components of the foam ingested by the user. For example, if the foam contains nicotine, the level of nicotine delivered by the device may be reduced.

[0016] Advantageously, the air inlet may be at least 20mm from the outlet, providing sufficient clearance to prevent the user's mouth from obstructing the air inlet when inhaling through the outlet.

[0017] Advantageously, the device may further comprise a valve between the foam generating element receptacle and the outlet for selectively allowing foam to flow therebetween, the valve being opened and closed via user control. The use of a controllable valve may prevent foam from flowing out of the outlet when desired, thereby reducing or preventing the possibility of leakage from the device when it is not in active use.

[0018] Optionally, the valve may be biased to a closed state such that continuous operation of the user control is required to hold the valve open, thereby preventing the user from accidentally leaving the valve open when not in use and reducing or preventing unintentional leakage of foam from the device.

[0019] Additionally, the valve may be biased via a spring.

[0020] In a preferred embodiment, the user control may be a push button.

[0021] Preferably, there are a plurality of foam generating elements, at least one of which may be separated from the other foam generating elements by an openable dividing wall.

[0022] Advantageously, the device may further include a pointed protrusion for opening the reclosable septum.

[0023] Advantageously, the device may further include a pull tab for opening the reclosable septum.

[0024] Optionally, the openable septum may include a valve and the device may further include a user control for actuating the valve to move the foam generating element.

[0025] Furthermore, the foam inhaler may be a stable foam inhaler for dispensing a stable foam, and the foam generating element may be a stable foam generating element.

[0026] Preferably, the fluid flow path may include a conduit at or adjacent to the outlet.

[0027] Advantageously, the fluid flow path may include an expansion chamber between the foam generating element receiver and the outlet, which provides space for the foam to expand, thereby allowing the foam to be stored for a short period of time before being inhaled.

[0028] Preferably, the stable foam generating element may be received in a non-electrical inhalation cartridge, which reduces or eliminates the need for electrical charging. The cartridge is a convenient way of loading the stable foam generating components into the device, allowing the remainder of the device to be reused with additional cartridges.

[0029] Advantageously, the non-electrical inhalation cartridge may include at least one finger grip at its distal end opposite the outlet, to allow the cartridge to be easily withdrawn from the carrier.

[0030] In a preferred embodiment, there are multiple stable foam-producing ingredients, collectively including carbonates and acids.

[0031] The device may have a mouthpiece defining an outlet.

[0032] According to a second aspect of the present invention, there is provided a foam inhaler comprising the following components: an element for generating foam; agitation means for agitating the element to generate foam; and an outlet for dispensing foam to a user.

[0033] According to a third aspect of the present invention, there is provided a stable foam inhaler for delivering a stable foam to be inhaled by a user over an extended period of time, the inhaler comprising the following components: a foam-generating element receptacle; a stable foam-generating element for producing said stable foam (receivable in the foam-generating element receptacle, at least one of said components being separated from the others of said components by an openable / closable partition); an outlet for delivering the stable foam to a user; and a fluid flow path fluidly connecting the foam-generating element receptacle and the outlet (such that when the partition is opened the components interact to produce a stable foam which flows via the fluid flow path to the outlet and is inhaled by the user over an extended period of time).

[0034] In contrast to short-lived substances or rapidly inhaled inhalants, stable bubbles allow the user to consume or inhale the substance contained in the bubble slowly over a longer period of time, with multiple inhalations, which can provide a satisfying and pleasurable sensation to the user. The septum maintains separation between the ingredients, and when the user attempts to inhale the bubble, the septum can be broken to allow the bubble to form.

[0035] The foam generating element receiving portion may also be called a foam generating element receiver, port, dock, or chamber.

[0036] Preferably, at least one of the stable foam-generating elements may be received in a non-electrical inhalation cartridge, which reduces or eliminates the need for electrical charging. The cartridge provides a convenient way to load the stable foam-generating components into the device, allowing the remainder of the device to be reused with additional cartridges.

[0037] Advantageously, at least one of the stable foam-generating elements may comprise a liquid received in a liquid-receiving chamber of the non-electrical inhalation cartridge.

[0038] Advantageously, the liquid may be expelled from the liquid receiving chamber by manual pressure applied to the chamber, which is convenient and requires minimal or no complex mechanisms.

[0039] In a preferred embodiment, at least one of the stable foam-generating elements may comprise a solid that is received in a solid-receiving chamber of a non-electrical inhalation cartridge.

[0040] Additionally, a reclosable partition may be provided between the solid receiving chamber and the liquid receiving chamber.

[0041] Preferably, there may be two stable foam-producing elements, each housed in a separate chamber, one of the chambers being on the path between the other chamber and the outlet so that the stable foam-producing elements mix within said other chamber, thereby facilitating mixing of the stable foam-producing elements and reducing the amount of unreacted material, and therefore reducing waste.

[0042] Advantageously, the cartridge may further include an openable barrier at or adjacent an end thereof that is in fluid communication with the fluid flow path and that allows foam or at least one stable foam-generating element to flow into the fluid flow path when the openable barrier is open. The additional barrier may help to contain the stable foam element when the cartridge is not inserted into the carrier.

[0043] Advantageously, each openable partition may be a flat seal.

[0044] In a preferred embodiment, each reclosable partition may be constructed from foil, such as metal foil, which provides a tight seal between components and can extend the shelf life of the device, while still being easily pierced or opened when required.

[0045] Optionally, the outlet and at least a portion of the fluid flow path may be defined by a carrier for a non-electrical inhalation cartridge.

[0046] Preferably, the fluid flow path may include a conduit located adjacent the outlet and an expansion chamber located between the foam-generating element receiving portion and the conduit, which provides space for the foam to expand and may allow the foam to be stored for a short period of time before being inhaled.

[0047] Advantageously, the expansion chamber may be defined by the carrier, in which case the expansion chamber is not part of the disposable cartridge, thereby eliminating waste.

[0048] In a preferred embodiment, the conduit may have an inlet opening that is off-center relative to the expansion chamber, such an arrangement allowing the intake to be lower in use, such that as foam is consumed and the foam level in the expansion chamber drops, the remaining foam will gravity occupy the lower part of the expansion chamber, making a greater foam volume available.

[0049] Advantageously, the conduit may have an inlet opening and a longitudinal extent that positions the inlet opening closer to the foam generating element receptacle than the outlet, thereby allowing foam to be drawn from the end of the cartridge, i.e. from a more central region of the expansion chamber to the outlet, improving foam uniformity at the outlet.

[0050] Preferably, the device may further comprise a protrusion to assist in the expulsion of one of the stable foam-generating elements. The protrusion may be sharp or needle-like and may assist in piercing the septum.

[0051] Furthermore, the protrusions may be for piercing the reclosable septum, and the protrusions may include passages for allowing the passage of foam or stable foam-generating elements. The provision of passages, such as bores or channels, can prevent the protrusions from blocking the holes or perforations.

[0052] Optionally, the protrusions may be configured to pierce both openable septa.

[0053] Advantageously, there may be two protrusions, a second protrusion configured to protrude into one chamber and a first protrusion configured to protrude into at least the other chamber, spaced apart to allow for more efficient mixing of the components.

[0054] Beneficially, the device may further comprise a check valve to allow movement of foam from the foam generating element receiver to the outlet and to prevent or restrict movement of fluid from the outlet to the foam generating element receiver.

[0055] In a preferred embodiment, the stable foam-generating component may comprise a carbonate salt and an acid as a whole. This allows for the generation of carbon dioxide through a chemical reaction, which generates foam. A chemical reaction is more convenient in manufacturing than, for example, releasing a pressurized container. Although carbonate salts are mentioned, more generally, the stable foam-generating component may comprise a base and an acid as a whole. Alternatively, the stable foam-generating component may comprise any chemical gas-generating means, particularly a carbon dioxide-generating means. It should be understood that the stable foam-generating component may comprise, for example, sugar and a component (e.g., yeast) for converting the sugar into carbon dioxide.

[0056] Additionally, at least one of the carbonate and the acid may be a powder, which may generate bubbles faster due to its larger surface area than other solids.

[0057] Preferably, the septum can be opened by being destroyed.

[0058] Additionally, one of the stable foam-producing components may include a thickener.

[0059] According to a fourth aspect of the present invention, there is provided a method for increasing the duration of an inhalation activity, the method comprising the steps of: providing a device as described in any of the preceding claims; opening the septum so that the foam generating element reacts to generate a stable foam which flows through the fluid flow path to the outlet; and inhaling the stable foam multiple times.

[0060] According to a fifth aspect of the present invention, there is provided a nicotine inhalation device for delivering a stable foam to be inhaled by a user over an extended period of time, the inhalation device comprising: a foam-generating element receptacle; a non-electrical inhalation cartridge having a stable foam-generating element for generating a stable foam, said element being receivable in an ingredient receptacle, at least one of said ingredients being separated from the other ingredients by an openable / closable partition, at least one of the ingredients for generating the stable foam comprising nicotine; an outlet for providing the stable foam to the user; and a fluid flow path fluidly connecting the foam-generating element receptacle and the outlet, such that when the partition is opened the ingredients interact to generate a stable foam and flow via the fluid flow path to the outlet to be inhaled by the user over an extended period of time.

[0061] According to a sixth aspect of the present invention, there is provided a cannabis component inhalation device for delivering a stable foam to be inhaled by a user over an extended period of time, the inhalation device comprising: a foam-generating element receptacle; a non-electrical inhalation cartridge having stable foam-generating elements for producing a stable foam, said elements being receivable in the foam-generating element receptacle, at least one of said elements being separated from the other of said elements by an openable / closable partition, at least one of the stable foam-generating elements comprising a cannabis component; an outlet for providing the stable foam to a user; and a fluid flow path in fluid communication between the foam-generating element receptacle and the outlet, such that when the partition is opened the ingredients interact to produce a stable foam and flow via the fluid flow path to the outlet for inhalation by a user over an extended period of time.

[0062] According to a seventh aspect of the present invention, there is provided a supplement inhalation device for delivering a stable foam to be inhaled by a user over an extended period of time, the inhalation device comprising the following components: a foam-generating element receptacle; a non-electrical inhalation cartridge having a stable foam-generating element for generating a stable foam, said element being receivable in the foam-generating element receptacle, at least one of said components being separated from the other components by an openable / closable partition, at least one of the stable foam-generating elements comprising a supplement; an outlet for providing the stable foam to the user; and a fluid flow path fluidly connecting the foam-generating element receptacle and the outlet, such that when the partition is opened the components interact to generate a stable foam and flow via the fluid flow path to the outlet to be inhaled by the user over an extended period of time.

[0063] According to an eighth aspect of the present invention, there is provided a food and beverage inhalation device for delivering a stable foam to be inhaled by a user over an extended period of time, the inhalation device comprising: a foam-generating element receptacle; a non-electrical inhalation cartridge having stable foam-generating elements for generating a stable foam, the elements being receivable in the foam-generating element receptacle, at least one of the components being separated from the other components by an openable / closable partition, and at least one of the stable foam-generating elements comprising a food or beverage; an outlet for providing the stable foam to the user; and a fluid flow path fluidly connecting the foam-generating element receptacle and the outlet, such that when the partition is opened, the elements interact to generate a stable foam which flows via the fluid flow path to the outlet to be inhaled by the user over an extended period of time.

[0064] According to a ninth aspect of the present invention, there is provided an inhalant inhalation device for delivering a stable foam to be inhaled by a user over an extended period of time, the inhalation device comprising: a foam-generating element receptacle; a non-electrical inhalation cartridge having stable foam-generating elements for generating a stable foam, the elements being receivable in the foam-generating element receptacle, at least one of the elements being separated from the other elements by an openable / closable partition, and at least one of the stable foam-generating elements containing an inhalant; an outlet for providing the stable foam to the user; and a fluid flow path fluidly connecting the foam-generating element receptacle and the outlet, the elements interacting to generate a stable foam when the partition is opened, which flows via the fluid flow path to the outlet for inhalation by the user over an extended period of time.

[0065] According to a tenth aspect of the present invention, there is provided a stable foam inhalation device for delivering a stable foam that can be inhaled by a user over an extended period of time, the inhalation device comprising: a cartridge receiving portion; a cartridge receivable in the cartridge receiving portion, the cartridge comprising at least one chamber for receiving a foam-generating element and a pierceable septum in fluid communication with the chamber; a non-electrical inhalation cartridge having stable foam-generating elements for producing a stable foam, the elements being receivable in the element receiving portion, at least one of the elements being separated from the other elements by an openable septum, and at least one of the stable foam-generating elements containing an inhalant; an outlet for providing a stable foam to a user; a fluid flow path fluidly connecting the foam-generating element receiving portion with the outlet, the fluid flow path connecting the foam-generating element receiving portion with the outlet, the fluid flow path connecting the foam-generating element receiving portion with the outlet, the stable foam being generated when the septum is opened, the stable foam being generated through the fluid flow path and flowing to the outlet for inhalation by the user over an extended period of time; a protrusion located at or adjacent to the cartridge receiving portion for piercing the septum; and a fluid flow path connecting the cartridge receiving portion with the outlet, the chamber being in fluid communication with the outlet when the septum is pierced by the protrusion.

[0066] According to an eleventh aspect of the present invention, there is provided a stable foam inhalation device for delivering a stable foam to be inhaled by a user over an extended period of time, the inhalation device comprising: a first chamber having at least a partially flexible wall (including a liquid foam-generating element); a second chamber having a further foam-generating element; and an openable partition between the first and second chambers (operable to release the liquid foam-generating element from the first chamber to the second chamber when the partition is opened, so that a stable foam is generated and delivered through an outlet).

[0067] According to a twelfth aspect of the present invention there is provided a stable foam inhalation device for delivering a stable foam to be inhaled by a user over an extended period of time, the inhalation device comprising: a first chamber (including a liquid foam generating element) having a wall at least part of which is flexible; a second chamber having a further foam generating element; the liquid foam generating element and the further foam generating element, which are capable of interacting to produce a stable foam; and at least one outlet associated with the cartridge for delivering foam or at least one of the foam generating elements from the cartridge (the flexible wall being operable to allow the foam or liquid foam generating element to be released from the outlet).

[0068] According to a thirteenth aspect of the present invention, there is provided a liquid dispensing device, the dispensing device comprising the following components: a container containing a liquid, at least a portion of the container including a flexible wall for applying manual pressure to the liquid; a wall including an opening for discharging the liquid from the container when manual pressure is applied to the liquid, or a perforated portion in which an opening can be formed for discharging the liquid from the container when manual pressure is applied to the liquid.

[0069] According to a fourteenth aspect of the present invention, there is provided a cartridge for a stable foam inhaler which dispenses a stable foam for consumption by a user, the cartridge for the inhaler having no electrical current means and comprising the following components: a flexible mixing chamber having a first receiving portion for slidingly receiving a first foam generating element and a second receiving portion for slidingly receiving a second foam generating element, the flexible mixing chamber having an access opening at a first end and closed at a second end opposite the first end, the access opening being dimensioned to receive the first and second foam generating elements therethrough; an expansion chamber in fluid communication with the access opening of the flexible mixing chamber (wherein the partition member has one or more mixing members for agitating consumable foam generated by the first and second foam generating elements as it passes from the mixing chamber to the expansion chamber); and an exhaust member located at or adjacent to one end of the expansion chamber and having an outlet for allowing a user to inhale ingestible foam from the expansion chamber (wherein the exhaust member includes an inlet opening and an exhaust conduit interconnecting the inlet opening and the outlet, the exhaust conduit having a longitudinal extent that positions the inlet opening closer to the partition member than the outlet).

[0070] In contrast to short-term release or rapidly inhaled inhalants, stable foam allows the user to consume or inhale the substance contained within the foam slowly over a long period of time, with multiple puffs. This can provide a satisfying and pleasant experience for the user. A cartridge without an energizing element reduces or eliminates the need for charging. A flexible mixing chamber provides a convenient method for, for example, manually activating the foam-generating element. The partition member spatially separates the foam-generating element from the cartridge outlet, thereby allowing foam to expand into the space between them. This space is defined by the expansion chamber. The mixing member (mixing arm) included in the partition member defines an opening through which the foam travels. The movement of the foam through the opening may generate a vortex that helps mix the foam with unreacted foam-generating elements to improve foam homogeneity. An outlet with an outlet conduit allows foam to be drawn away from one end of the cartridge. In other words, foam can be drawn from the central region of the cartridge toward the outlet, improving foam homogeneity at the outlet.

[0071] Although the mixing chamber is described as being flexible, this need not be the case: for example, if a non-manual activation means is envisaged or if the mixing chamber and the expansion chamber are integrally formed, it may be envisaged that the mixing chamber does not have an access opening therefor.

[0072] The second end of the mixing chamber may be integrally formed with the remainder of the mixing chamber, although a separable end cap may also be used.

[0073] A partition member is shown but is not required, and even if a partition member is present, a mixing member is not required.

[0074] Although a discharge conduit in the discharge member is described, this may be omitted, or if a discharge conduit is present, the longitudinal extent of the discharge conduit may be such that the inlet opening is closer to the outlet opening than the separating element.

[0075] Although the cartridge is described as lacking electrical means, this may be included, for example the cartridge may include an electric motor for agitating the liquid to generate foam and a battery for powering the electric motor.

[0076] Although the device is described as being for stable foams, the device may also be used with other inhalants or consumables.

[0077] Preferably, the flexible mixing chamber may be constructed from a thermoplastic elastomer, which can provide a food-safe, durable, and sufficiently flexible material for the mixing chamber.

[0078] Preferably, the inlet opening may be off-center relative to the expansion chamber. In a preferred embodiment, the inlet opening may be located in a sidewall of the expansion chamber or adjacent thereto. This arrangement allows the inlet opening to be at a lower position in the device during use. This allows more foam to be available as the amount of foam in the expansion chamber decreases as foam is consumed, with the remaining foam occupying the lower portion of the expansion chamber due to gravity.

[0079] Preferably, the partition member includes a stop and the access opening and expansion chamber are connectable to the partition member on either side of the stop, which allows the mixing chamber and expansion chamber to be pressed onto the sealing surface of the partition member until the stop is reached, facilitating assembly of the cartridge.

[0080] In a preferred embodiment, the stop may be a ridge extending around the periphery of the partition member.

[0081] Preferably, the partition member includes an axially extending protrusion extending into the flexible mixing chamber for contacting the first or second foam generating element, which may provide a small area of ​​contact with the first or second foam generating element to aid in, for example, draining liquid therefrom.

[0082] Optionally, the passageway through the divider member may widen from the flexible mixing chamber towards the expansion chamber, this widening of the passageway may encourage movement of foam from the mixing chamber to the expansion chamber.

[0083] Additionally, the passages may be widened via a step, which may facilitate the manufacture of the widened member.

[0084] Preferably, the cartridge for the inhalation device may further include a first foam-generating element and a second foam-generating element.

[0085] Preferably, the second foam-generating element may consist of a reservoir of liquid, which liquid makes it possible to dissolve the first foam-generating element.

[0086] In a preferred embodiment, the liquid may be water. Water is an ingestible liquid and various container materials may be used. Other liquids may also be employed as solvents.

[0087] Additionally, the liquid may be dispensed from the container via manual pressure applied to the container, allowing the user to conveniently dispense the liquid from the container without tools.

[0088] Optionally, the container may be breakable via the manual pressure. A frangible (easily burstable, easily crushed) container allows for the dispensing of liquid from a normally sealed container.

[0089] Preferably, the container may include holes in its outer wall through which the passage of liquid is prevented or restricted when no manual pressure is applied to the container and through which liquid is dispensed when manual pressure is applied to the container, which has the advantage that the container does not have to be broken in order to dispense liquid from it.

[0090] Preferably, the container may be oriented so that the aperture faces the first foam-generating element, so that the liquid is dispensed directly towards the first foam-generating element, which may, for example, reduce or eliminate the need to shake the cartridge by allowing better dispensing of the liquid.

[0091] Preferably, the container may be made from a thermoplastic elastomer, which can provide a food-safe, durable and sufficiently flexible material.

[0092] Preferably, the first foam-generating element comprises a carbonate and an acid, which allows for foaming by producing carbon dioxide through a chemical reaction, which can produce foam more easily than, for example, releasing a pressurized container.

[0093] In a preferred embodiment, the carbonate comprises sodium bicarbonate and the acid comprises citric acid, two highly ingestible and food-safe components, although other components may be used.

[0094] Preferably, the first foam-generating element comprises a stabilizer, which enables short-term foam bursts to be converted into a stable foam.

[0095] Alternatively, the stabilizer may comprise lectin or xanthan gum. Other stabilizers or thickeners may also be used.

[0096] According to a fifteenth aspect of the present invention, there is provided a stable foam inhalation device for dispensing a stable foam for ingestion by a user, the inhalation device comprising a cartridge according to any one of the preceding paragraphs and a carrier, the carrier including the following elements: a carrier body; a receiver for receiving the cartridge within the carrier body; a carrier inlet for fluid communication with the outlet of the discharge member when the carrier is received in the receiver; a carrier outlet for dispensing the stable foam to a user; and a conduit through the carrier body between the carrier inlet and the carrier outlet.

[0097] Separating the carrier and cartridge allows for the use of disposable cartridges and reusable carriers, providing the convenience of pre-loaded cartridges without requiring the entire device to be disposable. Also, because the carrier is reusable, it can include additional features and be designed to be ergonomically large without significant concerns about material waste.

[0098] It will be appreciated that the exhaust conduit of the cartridge may extend through at least a portion of the carrier. In fact, the exhaust conduit may extend only through the carrier and not through the expansion chamber.

[0099] Preferably, the stable foam inhalation device may further include a check valve in the conduit to permit movement of foam from the carrier inlet to the carrier outlet and to prevent or restrict movement of fluid from the carrier outlet to the carrier inlet, thereby allowing a user to consume or inhale foam while preventing or restricting breathing into the device and disrupting the distribution of foam within the device.

[0100] Preferably, the check valve may be a duckbill valve.

[0101] Preferably, the stable foam inhalation device may further include an indicator element to indicate that foam is being inhaled, which indicates to the user and bystanders that the device is in use.

[0102] Additionally, the indicator element may include a light emitting element for illuminating when foam is being inhaled. Light is a less intrusive signal compared to, for example, sound. It should be understood that the light emitting element does not interfere with the primary function of the inhaler device; i.e., the user can inhale foam whether or not the light is present and operating.

[0103] Preferably, the display element may include a pressure sensor, which allows the device to detect when the user is inhaling.

[0104] Optionally, the pressure sensor may be located in a sub-conduit that is remote from the conduit and in fluid communication with the conduit, in which case the pressure sensor may be remote from the outlet, which may be advantageous for the electrical layout of the device.

[0105] Preferably, the carrier body includes a receptacle, a portion of which is movable relative to the remainder of the carrier body to captively hold the cartridge. A movable member of the carrier body allows the receptacle to be resized. In other words, the movable member can be moved to enlarge or extend the receptacle so that a cartridge can be placed therein. The movable member can then be returned to a predetermined position to secure the cartridge in place.

[0106] Preferably, the stable bubble inhaler device further comprises biasing means for biasing said portion of the carrier body towards the receiver, which allows the movable portion to automatically retract towards the cartridge and bias the cartridge into position, which may be advantageous for users who have difficulty with fine motor skills, for example those suffering from arthritis.

[0107] Preferably, the biasing means may be a spring.

[0108] Optionally, the movable part may be located at or adjacent to the carrier entrance.

[0109] Preferably, the carrier body may include at least one sidewall, which may include an access opening therein to provide visual or tactile access to the cartridge. The access opening may, for example, allow for direct engagement and movement of the cartridge. For example, it may allow for manual manipulation and activation of the foam-generating element through the wall of the mixing chamber. Furthermore, allowing movement of the cartridge through the access opening may aid in the release of the cartridge from the receptacle. Alternatively or additionally, the access opening may allow a user to visually inspect the foam production or level remaining in the cartridge. While the access opening allows access to the cartridge, the sidewalls may extend further up the sides of the cartridge to more securely hold the cartridge in place laterally. The access opening may also provide leverage underneath the cartridge, facilitating its removal from the receptacle.

[0110] Preferably, the carrier body has two side walls, each of which may have an access opening therein, the access opening in each side wall enabling the cartridge to be grasped between the fingers.

[0111] Preferably, the carrier body and each access opening are elongated in shape, and the longitudinal extent of each access opening may coincide with the longitudinal extent of the carrier body, thereby making a larger portion of the cartridge visible.

[0112] Additionally, the access opening may extend towards the biasing means, thereby allowing the cartridge to be easily moved towards the biasing means.

[0113] In a preferred embodiment, the or each access opening may be tapered.

[0114] According to a sixteenth aspect of the present invention, there is provided a nicotine stable foam inhalation device for allowing a user to ingest a stable foam containing nicotine. The device comprises the following components: a cartridge for a stable foam inhalation device, the cartridge comprising a flexible mixing chamber, free of energizing means, having a first receiving portion for slidingly receiving a first foam-generating element and a second receiving portion for slidingly receiving a second foam-generating element, the flexible mixing chamber having an access opening at a first end and closed at a second end opposite the first end, the opening being sized to receive the first and second foam-generating elements therethrough and in fluid communication with the access opening of the flexible mixing chamber via the partition member; a dividing element having one or more mixing members for stirring the spent foam generated by the first and second foam-generating elements as they pass from the mixing chamber to the expansion chamber; and a dividing element located at or adjacent to one end of the expansion chamber, allowing a user to inhale the spent foam from the expansion chamber. a discharge member having an outlet for dispensing foam to a user (wherein the discharge member includes an inlet opening and an outlet conduit interconnecting the inlet opening and the outlet, the outlet conduit having a longitudinal extent that positions the inlet opening closer to the dividing element than the outlet, and the outlet conduit having a longitudinal extent that positions the inlet opening closer to the dividing element than the outlet); a first foam-generating element and a second foam-generating element received in a first receptacle and a second receptacle, respectively (the first and / or second foam-generating element containing nicotine); a carrier including a carrier body (wherein the receptacle receives the cartridge at or within the carrier body; the carrier inlet in fluid communication with the outlet of the discharge member and the carrier outlet for dispensing foam to a user).

[0115] According to an eighteenth aspect of the present invention, there is provided a method of ingesting nicotine, the method comprising: a) assembling a nicotine stable foam inhalation device according to the third aspect of the present invention by receiving a cartridge in a receptacle of a carrier; b) activating the first and / or second foam-generating elements so that the first and second foam-generating elements together generate a stable foam comprising nicotine; and c) inhaling the stable foam from an outlet of the carrier.

[0116] According to a nineteenth aspect of the present invention, there is provided a cannabis component stable foam inhaler for discharging a stable foam containing cannabis components to be ingested by a user, the device comprising: a cartridge for a stable foam inhaler, the cartridge comprising a flexible mixing chamber having no energizing means and having a first receiving portion for slidingly receiving a first foam generating element and a second receiving portion for slidingly receiving a second foam generating element, the flexible mixing chamber having an access opening at a first end and closed at a second end opposite the first end, the access opening being dimensioned to receive the first and second foam generating elements therethrough; an expansion chamber in fluid communication with the access opening of the flexible mixing chamber via the partition member; and a separator for passing spent foam generated by the first and second foam generating elements from the mixing chamber to the expansion chamber. a dividing element having one or more mixing elements for stirring as it passes through; a discharging element located at or adjacent to one end of the expansion chamber and having an outlet for allowing a user to inhale the spent foam from the expansion chamber (the discharging element including an inlet opening and an outlet conduit interconnecting the inlet opening and the outlet, the outlet conduit having a longitudinal extent that positions the inlet opening closer to the dividing element than the outlet opening); first and second foam generating elements received in first and second receptacles, respectively, the first and / or second foam generating elements comprising a cannabis component, a carrier body, a receptacle for receiving a cartridge at or within the carrier body, a carrier inlet in fluid communication with the outlet of the discharging element, and a carrier outlet for dispensing the foam to a user.

[0117] According to a nineteenth aspect of the present invention there is provided a method of consuming cannabis components, the method comprising the steps of: a) assembling a cannabis component stable foam inhalation device according to the eighteenth aspect of the present invention by receiving a cartridge in a receiving portion of a carrier body, b) activating the first and / or second foam generating elements such that the first and second foam generating elements together generate a stable foam comprised of cannabis components, and c) inhaling the stable foam from the carrier outlet.

[0118] According to a twentieth aspect of the present invention, there is provided a stable foam inhaler for medicinal and / or nutritional supplements for discharging a stable foam consisting of medicinal and / or nutritional supplements to be ingested by a user, the device comprising the following components: a cartridge for the stable foam inhaler, the cartridge comprising a flexible mixing chamber having no energizing means and having a first receiving portion for slidingly receiving a first foam-generating element and a second receiving portion for slidingly receiving a second foam-generating element, the flexible mixing chamber having an access opening at a first end and closed at a second end opposite the first end, the access opening being dimensioned to receive the first and second foam-generating elements therethrough; and an expansion chamber in fluid communication with the access opening of the flexible mixing chamber via the partition member. a dividing element having one or more mixing members for agitating the spent foam generated by the first and second foam generating elements as it passes from the mixing chamber to the expansion chamber; a discharge member located at or adjacent to one end of the expansion chamber and having an outlet for allowing a user to inhale the spent foam from the expansion chamber (the discharge member includes an inlet opening and an outlet conduit interconnecting the inlet opening and the outlet, the outlet conduit having a longitudinal extent that positions the inlet opening at a position closer to the dividing element than the outlet opening); a carrier including a carrier body (having a receiver for receiving a cartridge at or within the carrier body, a carrier inlet in fluid communication with the outlet of the discharge member, and a carrier outlet for dispensing the foam to a user) with first and second foam generating elements (the first and / or second foam generating elements containing a medicinal product and / or a dietary supplement) received in first and second receiving portions, respectively.

[0119] According to a twenty-first aspect of the present invention, there is provided a method of consuming a medicine and / or dietary supplement, the method comprising the steps of: a) assembling a medicine and / or dietary supplement stable foam inhalation device according to the seventh aspect of the present invention by receiving a cartridge in a receiving portion of a carrier, b) activating the first and second foam-generating elements so that the first and second foam-generating elements together generate a stable foam comprising the medicine and / or dietary supplement, and c) inhaling the stable foam through an outlet of the carrier.

[0120] According to a twenty-second aspect of the present invention, there is provided a food or beverage stable foam inhalation device for dispensing a stable foam of a food or beverage substance for consumption by a user, the device comprising: a cartridge for a stable foam inhalation device, the cartridge comprising a flexible mixing chamber, free of energizing means, having a first receiving portion for slidingly receiving a first foam generating element and a second receiving portion for slidingly receiving a second foam generating element, the flexible mixing chamber having an access opening at a first end and closed at a second end opposite the first end, the access opening being dimensioned to receive the first and second foam generating elements therethrough; an expansion chamber in fluid communication with the access opening of the flexible mixing chamber via the partition member; and an expansion chamber for extracting spent foam generated by the first and second foam generating elements from the mixing chamber. a dividing element having one or more mixing elements for stirring as the foam passes into the expansion chamber; a discharge element located at or adjacent to one end of the expansion chamber and having an outlet for allowing a user to inhale the spent foam from the expansion chamber (including an inlet opening and an outlet conduit interconnecting the inlet opening and the outlet, the outlet conduit having a longitudinal extent that positions the inlet opening closer to the dividing element than the outlet opening); first and second foam generating elements (comprising a food or beverage substance) received in first and second receiving portions, respectively; a carrier including a carrier body (having a receiving portion for receiving the cartridge at or within the carrier body, a carrier inlet in fluid communication with the outlet of the discharge element, and a carrier outlet for dispensing the foam to a user).

[0121] According to a 23rd aspect of the present invention, there is provided a method for ingesting a food or beverage substance, the method comprising the steps of: a) assembling a food or beverage stable foam inhalation device according to the ninth aspect of the present invention by receiving a cartridge in a receptacle of a carrier, b) activating the first and second foam generating elements so that the first and second foam generating elements together generate a stable foam comprising the food or beverage substance, and c) inhaling the stable foam through an outlet of the carrier.

[0122] According to a twenty-fourth aspect of the present invention, there is provided a non-electrical inhalation cartridge for use in a stable foam inhaler device that delivers a stable foam for inhalation by a user over an extended period of time, the inhaler device comprising: a foam-generating element receiving portion (stable foam-generating elements for generating a stable foam, said elements being receivable in said element receiving portion, at least one of said elements being separated from another of said elements by an openable barrier); an outlet for dispensing the stable foam to a user; and a conduit fluidly connecting said foam-generating element receiving portion with said outlet such that when the barrier is opened, the elements interact to generate a stable foam (the stable foam flows via said conduit to said outlet for inhalation by a user over an extended period of time).

[0123] According to a twenty-fifth aspect of the present invention, there is provided a method of increasing the duration of an inhalation action, the method comprising the steps of: a) providing a cartridge according to the eleventh aspect of the present invention; b) opening the barrier so that the foam generating element reacts to generate a stable foam which flows through the conduit to an outlet; and c) inhaling the stable foam in multiple inhalations.

[0124] According to a 26th aspect of the present invention, there is provided an inhalation device for dispensing an inhalant to a user, the device comprising the following components: a component receiving container made of a flexible material; components for generating an inhalant (the components are received in the component receiving container, and at least one of the components is received in a sub-container from which the at least one component can be dispensed by pressure applied to the sub-container via bending of the component receiving container); an outlet for dispensing the inhalant to a user; and a conduit fluidly connecting the component receiving container with the outlet so that when the at least one component is dispensed from the sub-container, the components interact to generate an inhalant that flows to the outlet and is inhaled by the user (fluidly connecting the component receiving container with the outlet).

[0125] According to a 27th aspect of the present invention there is provided a battery-powered foam inhaler device comprising: a cartridge having a liquid for generating foam and a foam outlet in the cartridge; agitation means for agitating the liquid to generate foam (comprising an electric motor and a battery for energising the electric motor); a carrier having a receiving portion for receiving the cartridge in the carrier, a carrier foam inlet for fluid communication with the foam outlet in the cartridge when the cartridge is received in the receiving portion, a carrier foam outlet for dispensing foam to a user, and a conduit between the carrier foam inlet and the carrier foam outlet.

[0126] This device allows a user to breathe bubbles into their mouth and consume the bubbles. The bubbles have a long lifespan (stable), allowing the user to inhale the bubbles for extended periods of time. This is an alternative or substitute for smoking tobacco or products intended to ingest active ingredients such as nicotine, caffeine, vitamins, medical substances, or food and beverage substances. The bubbles may be generated mechanically by an electric stirring means. This allows the user to repeatedly and controllably generate the bubbles as needed, in the amount needed.

[0127] Preferably, the device may further comprise a check valve (one-way valve) to allow movement of foam from the cartridge foam outlet to the carrier foam outlet and to prevent or limit movement of fluid from the carrier foam outlet to the cartridge foam outlet, thereby preventing or limiting disturbance of the foam within the device when the user blows back.

[0128] Advantageously, the device may further comprise a pressure sensor for detecting the application of negative pressure to the carrier foam outlet.

[0129] Advantageously, the pressure sensor may be communicatively connected to the stirring means such that, upon detecting negative pressure, the pressure sensor activates the stirring means to stir the liquid and generate foam, thereby simplifying foam generation and potentially providing a user experience closer to that of traditional smoking, as the user does not need to, for example, press a separate button to operate the stirring means.

[0130] In a preferred embodiment, the carrier may further include a carrier air inlet, which may allow air to be drawn in from outside the device to aid in foam generation.

[0131] Optionally, the cartridge may include a cartridge air inlet, the carrier may include an air flow conduit from the carrier air inlet for connection with the cartridge air inlet, and the agitating means may include air moving means driven by an electric motor for moving air from the air inlet to the cartridge. Such an arrangement allows air to be moved from outside the device into the cartridge for mixing with the foam-generating liquid.

[0132] Additionally, the air moving means may comprise an air pump.

[0133] Preferably, the cartridge includes an air injection conduit extending from the cartridge air inlet to the interior of the cartridge, and air may be injected into the cartridge through at least one opening in the air injection conduit, thereby improving foam generation by allowing liquid away from the cartridge air inlet to be exposed to air, and preventing or limiting the amount of unagitated liquid remaining in the cartridge.

[0134] The air injection conduit is attached to or is part of the cartridge in this example, but it should be understood that it may actually be part of the carrier and extend into the cartridge via the cartridge air inlet.

[0135] Preferably, the air injection conduit may have multiple openings therein, with more openings allowing more liquid to be exposed to the air, which may speed up foam generation.

[0136] Additionally, there may be at least five openings.

[0137] Preferably, the air injection conduit is elongated and may have multiple openings spaced along its longitudinal extent, which may allow for more uniform foam generation.

[0138] Preferably, the at least one opening is located closer to the end of the cartridge opposite the cartridge air inlet than the cartridge air inlet, which further improves foam generation and further prevents or limits the amount of unstirred liquid remaining in the cartridge.

[0139] Optionally, the cartridge foam outlet and cartridge air inlet may each be provided with a seal, and at least a portion of the carrier conduit may be configured to pierce the seal of the cartridge foam outlet, and at least a portion of the air flow conduit may be configured to pierce the seal of the cartridge air inlet, the seal allowing the cartridge to remain liquid-tight during transport, and the conduit being configured to pierce the seal so that fluid communication between the cartridge and the conduit is easily achieved when required.

[0140] Preferably, the carrier conduit and the air flow conduit protrude into the receiving portion to allow piercing of the cartridge foam outlet and cartridge air inlet respectively.

[0141] In a preferred embodiment, each seal is flexible so as to seal the cartridge foam outlet to the carrier conduit and the cartridge air inlet to the air flow conduit, potentially preventing leakage from the cartridge.

[0142] Optionally, the device may include a cartridge present sensor configured to detect when a cartridge has been received in the cartridge receiving portion, and the agitation means is configured to operate only when the cartridge present sensor detects a cartridge in the cartridge receiving portion. In this way, battery drain can be reduced by preventing or limiting unintentional operation of the agitation means. Such a sensor may also be referred to as a switch.

[0143] Preferably, the liquid may further comprise at least one of nicotine, a cannabis component, a pharmaceutical product, a dietary supplement, a food product (drinking substance).

[0144] Preferably, the device is elongated, measuring no more than 150 mm in length and no more than 50 mm in width, which may make the device easier to hold and use and provide a user experience similar to smoking.

[0145] According to a 28th aspect of the present invention, there is provided a foam suction device for inhaling foam with a user's breath, the foam suction device comprising: a container for containing a liquid for generating foam, the container having a container foam outlet for expelling foam and a container air inlet for receiving air; an energizable air moving means for directing air from outside the device to the container air inlet; a power source for providing power to the energizable air moving means; a mouthpiece in fluid communication with the foam outlet so that a user can inhale foam; a pressure sensor in fluid communication with the mouthpiece for detecting application of negative pressure to the mouthpiece; and a processor configured to operate the electrically energizable air moving means when the pressure sensor detects application of negative pressure to the mouthpiece.

[0146] According to a twenty-ninth aspect of the present invention there is provided a foam inhalation device comprising: a cartridge having a liquid for generating foam and a cartridge foam outlet; agitation means for agitating the liquid to generate foam; a receiver for receiving the cartridge on or within the carrier, a carrier foam inlet for fluid communication with the cartridge foam outlet when the cartridge is received in the receiver, a carrier foam outlet for dispensing foam to a user, a conduit between the carrier foam inlet and the carrier foam outlet, and a carrier air inlet.

[0147] According to a 30th aspect of the present invention, there is provided a foam dispensing device for dispensing foam to a user via suction by the user, the foam dispensing device comprising the following components: a foam generating element receiving portion; a foam generating element for generating foam (configured to be received in the foam generating element receiving portion); and an outlet for dispensing foam to the user (wherein the foam generating element receiving portion is in fluid communication with the outlet such that when the elements interact to generate foam, the foam flows to the outlet to be inhaled by the user).

[0148] According to a thirty-first aspect of the present invention there is provided a stable foam inhaler cartridge for use in a stable foam inhaler for delivering a stable foam for consumption by a user, the inhaler cartridge lacking an energising means and comprising: a mixing chamber having a receptacle for receiving a foam generating element, the mixing chamber having an access opening, the access opening being dimensioned to allow the foam generating element to pass therethrough; a partition member in fluid communication with the access opening; and an outlet opening for allowing a user to inhale the consumable foam.

[0149] According to a thirty-second aspect of the present invention there is provided a stable foam inhaler device for delivering a foam to be inhaled by a user, the inhaler device comprising: a foam-generating element receiver; a foam-generating element for generating a foam; and an outlet for delivering a foam to a user, wherein the foam-generating element receiver is in fluid communication with the outlet such that when the elements interact to generate a foam, the foam flows to the outlet to be inhaled by the user.

[0150] According to a thirty-third aspect of the present invention there is provided a foam inhalation device for dispensing a foam to be inhaled by a user over an extended period of time, the inhalation device comprising the following components: a foam-generating element receiver; a foam-generating element for generating a foam; and an outlet for dispensing a foam to a user, wherein the foam-generating element receiver is in fluid communication with the outlet such that upon interaction of the elements to generate a foam, the foam flows to the outlet to be inhaled by the user.

[0151] The invention will now be more particularly described, by way of example only, with reference to the accompanying drawings in which: [Brief explanation of the drawings]

[0152] [Figure 1] FIG. 2 is a top view of a first embodiment of a cartridge for a stable bubble inhaler according to the twelfth and twenty-fourth aspects of the present invention. [Figure 2] FIG. 2 is a side view of the cartridge for the stable bubble inhaler of FIG. 1. [Figure 3] FIG. 2 is a perspective view of the cartridge for the stable bubble inhaler of FIG. 1. [Figure 4] 2 is a perspective view of a partition member of the cartridge for the stable bubble inhaler of FIG. 1. FIG. [Figure 5] 2 is a perspective view of a second foam-generating element of the cartridge for the stable foam inhaler device of FIG. 1. FIG. [Figure 6] 3 is a perspective view of a stable bubble inhaler according to the first, third, ninth, fifteenth, twenty-sixth, thirtieth, thirty-first, thirty-second and thirty-third aspects of the present invention, having the stable bubble inhaler cartridge of FIG. [Figure 7] FIG. 7 is a side cross-sectional view of the stable bubble inhaler of FIG. 6 with the stable bubble inhalation cartridge removed. [Figure 8] FIG. 7 is an enlarged view of the inlet of the stable bubble inhaler of FIG. 6 with the stable bubble inhalation cartridge removed. [Figure 9] FIG. 7 is an exploded perspective view of the rear portion of the stable bubble inhaler of FIG. 6. [Figure 10] FIG. 10 is a perspective view of the assembled rear section of FIG. 9. [Figure 11] FIG. 1 is a top view of a carrier of a second embodiment of a stable bubble inhaler according to the first, third, ninth, fifteenth, twenty-sixth, thirty-ninth, thirty-first, thirty-second and thirty-third aspects of the present invention (block arrow indicates cartridge insertion direction). [Figure 12] FIG. 12 is a perspective view of the carrier of FIG. [Figure 13] FIG. 12 is a side view of the carrier of FIG. 11. [Figure 14] 3 is a perspective view of a third embodiment of a stable bubble inhaler according to the first, third, tenth, thirtieth, thirty-first, thirty-second and thirty-third aspects of the present invention; FIG. [Figure 15] 15 is a perspective view of the stable bubble inhaler cartridge of the stable bubble inhaler of FIG. 14. [Figure 16] FIG. 16 is a side view of the cartridge for the stable bubble inhaler of FIG. 15. [Figure 17] FIG. 15 is a side cutaway view of the stable bubble inhaler device of FIG. [Figure 18] 1 is a perspective view of a fourth embodiment of a stable bubble inhaler according to the first, third, tenth, thirtieth, thirty-first, thirty-second and thirty-third aspects of the present invention; FIG. [Figure 19] FIG. 19 is a side view of the cartridge for the stable bubble inhaler of FIG. 18. [Figure 20] FIG. 19 is an end view of the cartridge for the stable bubble inhaler of FIG. 18. [Figure 21] FIG. 10 is a perspective view of a carrier of a fifth embodiment of a foam inhaler according to the first, second, twenty-seventh, twenty-eighth and twenty-ninth aspects of the present invention. [Figure 22] FIG. 22 is a cross-sectional side view of the carrier of FIG. 21. [Figure 23] 22 is a bottom cross-sectional view of the carrier of FIG. 21. [Figure 24] 22 is a perspective view of a foam inhaler cartridge having the carrier of FIG. 21. FIG. [Figure 25] FIG. 25 is a side view of the cartridge of FIG. 24. [Figure 26] FIG. 25 is an end view of the cartridge of FIG. 24.

[0153] 1 to 3, a second embodiment of a stable foam inhaler cartridge 10 is shown. The second embodiment of the stable foam inhaler cartridge 10 includes a flexible mixing chamber 12, an expansion chamber 14, a partition member 16, and an ejection member 18.

[0154] The flexible mixing chamber (12) has an access opening (20) at a first end (22) and is closed at a second end (24) opposite the first end (22). The access opening (20) is sized to receive the first and second foam-generating elements (26, 28) therethrough. The access opening (20) is circular or substantially circular in shape, but may be other shapes, such as square or triangular. Similarly, the flexible mixing chamber (12) desirably has a circular cross-section, but may be other shapes. Preferably, the second end (24) is curved so as to be considered hemispherical. However, this is not required, and the second end (24) may be planar.

[0155] The flexible mixing chamber (12) has a first receiving portion (30) for slidably receiving a first foam-generating element (26) and a second receiving portion (32) for slidably receiving a second foam-generating element (28). The first receiving portion (30) is distal to the access opening (20) relative to the second receiving portion (32), and in this example is located at or adjacent to the second end (24). The second receiving portion (32) is located at or adjacent to the access opening (20). Preferably, the flexible mixing chamber (12) is sized so that the combined length of the first receiving portion (30) and the second receiving portion (32) is a majority of the length of the flexible mixing chamber (12), and more preferably, is substantially equal to the overall length of the flexible mixing chamber (12).

[0156] Preferably, the flexible mixing chamber (12) is made of a thermoplastic elastomer, which provides the desired flexibility. However, other flexible materials, such as silicone or other elastomeric materials, e.g., rubber, or other flexible plastics, may also be used. The flexibility of the flexible mixing chamber (12) allows for manual actuation or activation by compression of the first foam-generating element, the second foam-generating element, or both. However, if other actuation or activation methods are employed, the flexible mixing chamber (12) need not necessarily be flexible. The flexible mixing chamber (12) may preferably be transparent or translucent.

[0157] The expansion chamber (14) is preferably cylindrical or substantially cylindrical and considered a tube, but may have other shapes. For example, the expansion tube may have a cross-sectional shape that is a flattened circle, i.e., an oval. Other shapes, such as rectangular or triangular, may also be used. This also applies to the flexible mixing chamber (12), the partition member (16), and the discharge member (18). The expansion chamber (14) preferably has a mixing chamber proximal opening (34) and a discharge member proximal opening (36). Here, each opening is identical, but this is not necessarily the case. The expansion chamber (14) is also formed from a flexible material, such as a thermoplastic elastomer, but this is not required. The expansion chamber (14) may preferably be transparent or translucent.

[0158] The mixing chamber proximal opening 34 of the expansion chamber 14 is in fluid communication with the access opening 20 of the flexible mixing chamber 12 through the partition member 16. The partition member 16 preferably sealingly connects the expansion chamber 14 and the flexible mixing chamber 12. That is, the partition member 16 connects and seals the expansion chamber 14 and the flexible mixing chamber 12 together to prevent foam escape.

[0159] To achieve a sealed connection, the partition member 16 has a mixing chamber sealing surface 38 and an expansion chamber sealing surface 40. Preferably, each sealing surface 38, 40 is annular or substantially annular. The diameters of the mixing chamber sealing surface 38 and the expansion chamber sealing surface 40 are approximately the same as or identical to the diameters of the access opening 20 and the mixing chamber proximal opening 34 of the expansion chamber 14, respectively. This is because the sealing surfaces 38, 40 form an interference fit with the associated opening (end portion) of the expansion chamber 14 or mixing chamber 12, thereby preventing or limiting leakage of components, such as bubbles, from either chamber. The sealing surfaces 38, 40 are received within the respective chambers against their interior walls. The access opening 20 and the mixing chamber proximal opening 34 preferably have approximately the same or identical diameters, which may allow either sealing surface to be used with any opening. However, the diameters of the access opening (20) and the opening of the expansion chamber (14) may be different.

[0160] The partition member 16 preferably includes an external stop 42, and the mixing chamber 12 and the expansion chamber 14 are connectable to the partition member 16 on either side of the external stop 42. The stop 42 here is a ridge-like portion that extends annularly around the partition member 16 and separates the two sealing surfaces 38, 42 from each other.

[0161] Referring now to Figure 4, the partition member (16) further includes at least one hole (44) (through-hole) for fluidly connecting the expansion chamber (14) and the access opening (20). Preferably, there are two separate holes (44), which are separated by at least one (two in this example) mixing element (46). The mixing element (46) may be considered an arm. Furthermore, the mixing element (46) may prevent or limit movement of the foam-generating element from the flexible mixing chamber (12) into the expansion chamber (14) in its initial state. Preferably, the hole (44) is curved, and the opening of the hole (44) may be elongated so that it can be considered a slot.

[0162] The partition member (16) may further include a protrusion (48) extending axially within the flexible mixing chamber (12). While one protrusion (48) is shown in the figures, there may be multiple protrusions (48). Additionally, while the protrusion (48) is shown as being centered on the partition member (16), it may be off-center. The protrusion (48) is preferably tapered or pointed. In some embodiments, the sidewalls of the mixing chamber may also include protrusions.

[0163] Referring again to Figures 1 and 2, a passageway (50) through the partition member (16) is defined at least in part by a hole (44) and diverges from the mixing chamber sealing surface (38) toward the expansion chamber sealing surface (40). This divergence of the passageway (50) is preferably at an acute angle, such as defined by a step (52).

[0164] The discharge member (18) is located at or adjacent to one end of the expansion chamber (14) and has a discharge port (54) for discharging or discharging foam. Here, the discharge member (18) closes the discharge member proximal opening (36) at the end of the expansion chamber (14). The discharge member (18) includes a sealing surface (56) that connects and seals with the expansion chamber (14) in the same or similar manner as the sealing surface of the partition member (16). That is, the sealing surface (56) of the discharge member (18) is annular or approximately annular and has a diameter similar to or the same as that of the proximal opening of the expansion chamber (14) for receipt therein. The discharge member (18) further includes a stop member (58) to prevent over-insertion into the expansion chamber (14).

[0165] The inner surface 60 of the discharge member 18 is concave or substantially concave to assist in foam direction, and the outer surface 62 of the discharge member 18 is convex.

[0166] The outlet 54 preferably protrudes or is spaced from the exterior surface of the body of the outlet member 18. The outlet 54 is off-center relative to the remainder of the outlet member 18 and is located at or adjacent to the lower portion of the outlet member 18 in use.

[0167] The discharge member 18 further includes a discharge conduit 64 and an inlet opening 66, the discharge conduit 64 fluidly interconnecting the inlet opening 66 and the discharge outlet 54. The discharge conduit 64 has a longitudinal extent that positions the inlet opening 66 closer to the divider member 16 than the discharge outlet 54. Additionally, the inlet opening 66 may be off-center relative to the remainder of the discharge member 18 or the expansion chamber 14. In use, the inlet opening 66 is preferably located on or adjacent to the lower interior surface of the expansion chamber 14.

[0168] The flexible mixing chamber (12) includes first and second foam-generating elements (26, 28) disposed within the mixing chamber (12) in corresponding receptacles (30, 32). A partition member (16) is connected to the mixing chamber (12), an expansion chamber (14) is connected to the partition member (16), and an exhaust member (18) is connected to the expansion chamber (14), with the foam-generating elements (26, 28) received therein. These components may be secured together to prevent disassembly or separation. Additionally, two or more components may be integrally formed.

[0169] When the materials comprising the first and second foam-generating elements (26, 28) react or interact, a stable foam is produced, which is preferably achieved by foam expansion that is stabilized, thickened, or both.

[0170] For example, the first foam-generating element (26) may be comprised of a carbonate (e.g., sodium bicarbonate) and an acid (e.g., citric acid). While sodium bicarbonate and citric acid are preferred, any other edible or food-safe carbonate (e.g., calcium carbonate) or acid (e.g., tartaric acid) may be used. The carbonate and acid are in solid form here, e.g., powdered and compressed into the first foam-generating element. The first foam-generating element may therefore be uncompressed and simply a powder, but may also be a tablet or pill. In the solid state, the carbonate and acid do not react. The first foam-generating element (26) may further comprise a stabilizer, a thickener, or both. Stabilizers and thickeners such as lecithin and xanthan gum are commonly used, although any other thickener or stabilizer may also be used.

[0171] The cross section of each of the first and second foam generating elements (26, 28) is preferably circular to correspond to the cross section of the flexible mixing chamber.

[0172] As shown in FIG. 6, the second foam-generating element (28) preferably includes a liquid container (68). In this example, the second container (68) comprises a water container (68), but it may also be other liquids. The water may contain a colorant to aid visual identification. The container (68) is hollow and sealed, and preferably has curved ends (e.g., in this example, the longitudinal cross section of the container (68) is stadium-shaped). However, other shapes, such as a bowl-like shape, may also be used. Alternatively, such a container (68) may not be used, and the liquid and the first foam-generating element (26) may be separated by a flat seal.

[0173] The container (68) is preferably flexible and may be formed from a thermoplastic elastomer, as are the other components, although other flexible materials may also be used. In an example of a flexible container, the container (68) preferably includes a hole (70) therein, which allows liquid to be expelled therefrom when the container (68) is squeezed. The hole (70) is preferably small so that the surface tension of the liquid maintains the liquid within the container (68) when no pressure is applied. For example, the diameter of the hole (70) may be between 0 and 1 millimeter, and more preferably is substantially 0.5 millimeters (e.g., 0.45 millimeters). A flexible container (68) having a hole (70) may be referred to as a squeeze ball. The hole (70) is ideally located at the end of the container and oriented to face the first foam-generating element (26).

[0174] However, the container 68 may be rigid rather than flexible. In the case of a hard (non-flexible) container 68, at least a portion of the container 68 may preferably be frangible, rupturable, or crushable by manual pressure applied thereto. Rupture of at least a portion of the container 68 may release fluid therefrom. If the container 68 is rigid, holes 70 may be present, although this is not essential.

[0175] The liquid preferably consists of or consists essentially of water, but may alternatively be an acid or carbonate solution, in which case the first foam-generating element (26) may be devoid of acid or carbonate.

[0176] The first foam-generating element (26), the second foam-generating element (28), or both, may contain additional ingredients that a user may wish to consume or inhale. The first foam-generating element (26), the second foam-generating element (28), or both, may contain flavorings to enhance the user experience. Further additional ingredients are described below.

[0177] For example, the first foam-generating element (26), the second foam-generating element (28), or both, may contain medicinal, pharmaceutical, or nutritional supplements, including vitamins, supplements such as pre-exercise compositions, branched chain amino acids, creatine, other supplements typically taken during workouts to improve endurance, over-the-counter medications such as cough suppressants or pain relievers, and erectile dysfunction medications such as sildenafil. Compounds that are taken in small amounts as needed are particularly suitable.

[0178] The first foam-generating element (26), the second foam-generating element (28), or both, may contain a food or beverage substance or compound thereof. This may include flavorings or ingredients for soft drinks, such as electrolyte-type sports drinks or iced tea, both of which may traditionally be present in powder form. It may also be an alcoholic beverage, in which case alcohol may be used as the liquid in the container (68). Confectionery or dessert flavorings or ingredients may also be considered, allowing the user to experience a confectionery or dessert without consuming the number of calories typically associated with it. The first foam-generating element (26), the second foam-generating element (28), or both, may contain caffeine; for example, the total caffeine content of the first foam-generating element (26), the second foam-generating element (28), or both, may be substantially equivalent to that of a conventional espresso shot.

[0179] The first foam-generating element (26), the second foam-generating element (28), or both, may contain nicotine and may provide an alternative to smoking. The first foam-generating element (26), the second foam-generating element (28), or both, may contain tobacco or other components of tobacco itself.

[0180] The first foam-producing element (26), the second foam-producing element (28), or both, may contain cannabis or components of cannabis, such as tetrahydrocannabinol (THC) and / or cannabidiol (CBD), to provide psychoactive or medicinal benefits as desired. It should be understood that although cannabis is mentioned herein, references to cannabis and its components may be omitted from this specification as appropriate, given the differing legal and moral status of cannabis around the world.

[0181] As shown in Figures 6 and 7, the cartridge (10) is received within a second embodiment carrier (72) (holder) to form a second embodiment of an inhalation device (74). The second embodiment carrier (72) includes a carrier body (76), a cartridge receiving portion (78) for receiving the cartridge (10) within the carrier body (76), a carrier foam inlet (80), a carrier outlet (82), and a passageway (84) (conduit) through the carrier body (76) between the carrier foam inlet (80) and the carrier outlet (82).

[0182] Cartridge receiver 78, here a hole (recess) in carrier body 76, is sized to hold cartridge 10. Rear portion 86 of carrier body 76 is removably attached to the remainder of carrier body 76 to allow insertion of cartridge 10.

[0183] The outlet 54 of the cartridge 10 is in fluid communication with and may be insertable into the carrier foam inlet 80 of the carrier 72. The carrier foam inlet 80 includes a seal 88 for sealing the outlet 54 of the cartridge 10. The seal 88 is preferably an O-ring and may be made of an elastomer.

[0184] A carrier air inlet 90 is provided at or adjacent to the carrier foam inlet 80. The air inlet 90 allows air to be added to or entrained in the foam. The air inlet 90 is preferably a channel or conduit that passes through the carrier body 76 to the exterior of the device. Alternatively, the air inlet 90 may be able to communicate with the exterior through a void in the carrier body 76.

[0185] The venturi tube (92) is preferably in fluid communication with the carrier foam inlet (80) and preferably in fluid communication with the carrier air inlet (90). The venturi tube (92) has a rear opening that is in fluid communication with both inlets (80, 90). The passageway through the venturi tube (92) may be tapered to increase the velocity of the fluid flow, but this is not required. The head portion of the venturi tube (92) has a tapered, preferably tufted conical, shape. The venturi tube (92) may aid in mixing the foam and air.

[0186] The carrier 72 further includes a check valve 96 between the carrier foam inlet 80 and the carrier outlet 82. The check valve 96 is positioned to prevent a user from exhaling into the cartridge 10 or device and disrupting the distribution of foam therein. The check valve 96 is preferably a duckbill valve. A duckbill valve is made of a flexible material, has a conical or substantially conical shape, and has an opening 98 at its base. The check valve 96 includes cutouts 100 along or along the body of the check valve 96 from its tip (forward portion). The cutouts 100 allow fluid to flow from the base to the tip because the portions of the body defined by the cutouts 100 separate from each other to form a forward opening in the check valve 96 when there is outward pressure from within the valve body. When tip portion (104) is subjected to inward pressure from outside the body of the valve, the portions of the body defined by incisions (100) remain in contact, preventing fluid flow.

[0187] The tapered end of the venturi tube (92) is preferably received through an opening (98) in the base of the check valve (96).

[0188] The front portion 106 of the carrier body 76 is preferably removable from the remainder of the carrier body 76 or from the central portion 108 of the carrier body 76, for example, to aid in cleaning. The front portion 106 may include a check valve 96 or a Venturi tube 92, not shown. The front portion 106 or the central portion 108 of the carrier body 76 may include a magnetic element for easier attachment and detachment. The carrier body 72 may also include a sealing element between the front portion 106 and the central portion 108.

[0189] With particular reference to Figures 8-10, the second embodiment of the inhalation device (74) may also include an indicator or display element (110) for indicating that the user is inhaling through the inhalation device (74). The indicator element (110) may include a pressure sensor (112) (or flow sensor) for detecting when negative pressure is applied. As shown in Figure 14, a conduit (114) (channel) extends from the passageway (84) between the carrier foam inlet (80) and the carrier outlet (82) to the pressure sensor (112). The pressure sensor (112) is preferably located within or at the rear portion (86) of the carrier (72). However, in some embodiments, the pressure sensor (112) may be located directly in or within the passageway.

[0190] The indicator element 110 further includes a light emitting element 116, such as a light emitting diode, configured to illuminate when negative pressure is sensed by the pressure sensor 112. The light emitting element 116 is preferably disposed within the carrier body 76 and located at or adjacent to the cartridge 10. For example, the light emitting element 116 may be located at or adjacent to a central region of the cartridge receiving portion 78 of the carrier body 72. To accommodate the light emitting element 116 in this location, the rear portion 86 may include a protruding portion 118 that protrudes from the main body portion of the rear portion 86 and supports the light emitting element 116 and wiring. The central portion 108 of the carrier 72 may include a hole to receive the protruding portion 118.

[0191] The light emitting element (116) is electrically, electronically, or communicatively connected to the pressure sensor (112). The display element (110) may include a controller configured to determine when the pressure sensor (112) measures a negative pressure and to direct the light emitting element (116) to illuminate.

[0192] The display element (110) preferably includes a light emitting element (116) and, if present, a battery configured to power the controller. Preferably, the battery is rechargeable and the carrier (72) includes electrical terminals (120) for charging the battery.

[0193] The indicator element (110) is not essential to the device for dispensing foam and may not be included in the device of the present invention. For purposes of dispensing foam, the device may lack electrical components and may not require electrical current.

[0194] 10, rear portion (86) preferably includes a portion of cartridge receiving portion (78). Rear portion (86) may include at least one magnetic element (122) for removably coupling with a magnetic element on central portion (108) of carrier body (76), thereby advantageously allowing rear portion (86) to be removably attached to central portion (108).

[0195] In use, cartridge receiver 78 is opened by removing rear portion 86. Cartridge 10 is positioned within cartridge receiver 78, and cartridge receiver 78 is closed by reattaching rear portion 86. When within cartridge receiver 78, outlet 54 of discharge member 18 is inserted into (connected to) carrier foam inlet 80 of carrier 72.

[0196] The user may then apply pressure to the flexible mixing chamber 12 on the second foam-generating element 28. This causes the flexible mixing chamber 12 to deform, applying pressure to the second foam-generating element 28, which in turn causes liquid to be expelled from the container 68 through the holes 44. The protrusions 48 on the divider member 16 may assist in the expulsion of liquid from the container 68 by limiting deformation of the container 68 toward the divider member 16. The pressure applied by the protrusions 48 may create additional pressure on the container 68 to encourage the liquid to be dispensed.

[0197] The liquid dissolves ingredients or chemicals in the first foam-generating element (26), for example, carbonates and acids reacting to produce carbon dioxide, which can then be ejected. This ejected foam is stabilized to a stable foam by a stabilizer and thickened by a thickener.

[0198] To form stable bubbles, a stabilizer for stabilizing carbon dioxide bubbles is preferred, but other methods may be used. For example, nitrogen gas may be used to generate smaller, more stable bubbles than traditional carbon dioxide bubbles. While chemical reactions are described as generating foam and bubbles, other methods of generating foam or bubbles are contemplated. For example, a pressurized container of gas (68) may be released, or a liquid may be agitated to generate foam.

[0199] Once generated, the foam may exit the mixing chamber (12) and travel to the expansion chamber (14), where the expanding foam is accommodated. The mixing arms of the divider member (16) mix the foam as it passes through the divider member (16). This mixing is achieved by the mixing arms creating a vortex in the foam as it passes through the openings formed by the mixing arms. This mixing helps dissolve the first foam-generating element (26), thereby preventing or limiting powder inhalation.

[0200] The user can then inhale through the carrier outlet 82. The negative pressure or suction applied by inhalation opens the check valve 96, drawing foam from the expansion chamber 14, along the discharge conduit 64, and into the carrier foam inlet 80. The foam mixes with air drawn through the carrier air inlet 90. The foam and air mixture passes through the venturi tube 92, through the open check valve 96, and into the user's mouth via the carrier outlet 82.

[0201] The user inhales only a portion of the foam in a single inhalation. The foam is stable, allowing for multiple inhalations over an extended period of time. For example, the foam may be stable or present for 15 to 30 minutes, allowing for multiple inhalations of the foam, for example, essentially 50 inhalations.

[0202] When the user inhales through the carrier outlet 82, this exerts a negative pressure on the pressure sensor 112, which in turn illuminates the light emitting element 116, thereby providing an indication to the user or others that the device is in use.

[0203] Once the foam is fully utilized, the user can remove the cartridge (10) by removing the rear portion (86), after which a new cartridge (10) may be inserted into the cartridge receiver (78), if desired.

[0204] Figures 11 to 13 show a second embodiment of a carrier (272) for a stable bubble inhalation device. A cartridge as described above, such as the cartridge second embodiment, can be received within the carrier (272) to form an inhalation device. Reference numerals for elements identical or similar to those in the second embodiment have been increased by 200 from the numerals in the first embodiment. The carrier (272) of the second embodiment is preferably similar to the carrier (72) of the first embodiment and has at least some similar or identical features.

[0205] The carrier body 276 of the second embodiment carrier 272 includes a movable member 324 positioned on or adjacent to the cartridge receiving portion 278 and positioned on or adjacent to the carrier foam inlet 280. An end of the movable member 324 may form part of the cartridge receiving portion 278. The movable member 324 is preferably movable to further expand the receiving portion toward the carrier outlet 282, i.e., away from the center of the cartridge receiving portion 278. This expands (stretches) the cartridge receiving portion 278. The carrier body 276 may include a groove, a recess, or both to accommodate movement of the movable member 324 toward the carrier outlet 282. However, the movable member may be located elsewhere on or adjacent to the receiving portion, such as adjacent the rear end of the carrier body. In this case, the movable member is movable toward the rear end, away from the center of the receiving portion.

[0206] Movable member 324 is preferably biased toward cartridge receiver 278 via a biasing means. This may be achieved through the use of a spring. For example, a coil spring may be attached between movable member 324 and the remainder of carrier body 276, which forcibly biases movable member 324 toward cartridge receiver 278. Carrier body 276 may include a stop for movable member 324 to maintain the position of movable member 324 when a cartridge is not received in cartridge receiver 278.

[0207] The movable member 324 may include an opening 326 for corresponding connection to the cartridge outlet. The opening 326 in the movable member 324 may actually constitute the carrier foam inlet 280. Alternatively, the cartridge outlet may be received below the movable member, with the carrier foam inlet disposed below the movable member.

[0208] The movable member (324) preferably includes a recess (328) that corresponds to the shape of the expansion chamber of the cartridge.

[0209] The use of the movable member (324) may result in the capsule being inserted without removing any part of the carrier body (276), eliminating the need for a removable rear portion (286) as described for the second embodiment, although a removable rear member may still be used if required for increased convenience of use.

[0210] The carrier body (276) preferably includes sidewalls (330) at or adjacent to the cartridge receiving portion (278). At least one of the sidewalls (330), and preferably both sidewalls (330), has an access opening (332) therein. The access opening (332) is elongated and aligned along the longitudinal direction of the carrier body (276). The access opening (332) extends toward the movable member (324). This allows a user's finger to move the access opening (332) toward the movable member (324) to release the cartridge when the cartridge is received in the cartridge receiving portion (278).

[0211] The access opening (332) is tapered so that a larger portion of the opening is located near the rear portion (286) or a portion of the carrier body (276). The proximity of the larger portion of the access opening (332) to the rear portion (286) allows for easier application of manual pressure to the foam-generating element to activate it and allows for greater leverage to be applied from below to assist in cartridge removal.

[0212] It should be understood that the carrier body (276) may define a gap (334) (space, void) that opens to the access opening (332) below the cartridge when the cartridge receiving portion (278) receives the cartridge. Such a gap (334) can be easily understood by viewing FIG. 19, which shows the curved portion (336) (seat) that receives the second end of the mixing chamber. The gap (334) may be below a line extending from the seat or curved portion (336) to the carrier foam inlet (280). The gap (334) may aid in cartridge removal, for example, by providing leverage below the cartridge. The second embodiment carrier (272) may be used in a manner similar to or identical to the first embodiment carrier (72), except for the location of cartridge insertion and removal and the application of manual pressure to the foam-generating element. The movable member (324) moves in the direction of arrow A toward the carrier outlet (282) to enlarge the receiving portion (278). The movable member 324 may be moved, for example, via being pushed with the cartridge, after which the cartridge is positioned within the cartridge receiver 278, and the movable member 324 may move toward its original position under the influence of the biasing means to hold the cartridge in place.

[0213] The foam generating element may be activated by applying manual pressure to the mixing chamber through the access opening (332). Foam is then generated and aspirated in the same or similar manner as described above.

[0214] After use, the cartridge can be grasped through access opening 332, causing movable member 324 to move to enlarge cartridge receiver 278, thereby moving the cartridge toward carrier outlet 282. The cartridge can then be removed from cartridge receiver 278, if necessary, by leveraging the cartridge through gap 334.

[0215] Although an access opening is described, there may be no upper wall (rib) defining the recess, and the opening may simply be a cut-out portion.

[0216] Although the second embodiment describes an access opening and a movable portion, either or both features may be omitted.

[0217] 14 to 17, a third embodiment of a stable bubble inhaler device 474 is shown. Reference numbers similar to or identical to those of the first or second embodiments are used with the increment of 400 or 200, respectively.

[0218] The third embodiment of the stable foam inhaler (474) has similar features to the stable foam inhaler (74) of the first and second embodiments, and the description of similar features of the first and second embodiments may be considered relevant to the third embodiment as well.

[0219] A third embodiment of stable foam inhalation device 474 includes a carrier 472 and a cartridge 410, with the cartridge 410 receivable by the carrier 474. The carrier 410 includes a cartridge receiver 478 for receiving the cartridge 410, which may be considered a foam-generating element receiver for the carrier 472. The carrier 472 further includes an outlet 482 for expelling the stable foam from the device 474 for consumption or inhalation by a user.

[0220] Cartridge 410 preferably does not include electrical components (is non-electrical) to achieve its primary function of dispensing stable foam or stable foam-generating elements, but cartridge 410 may include electrical components for auxiliary functions such as lighting.

[0221] As shown in FIGS. 15 and 16, the cartridge (410) includes foam-generating elements (426, 428). Here, there are two foam-generating elements (426, 428), i.e., elements that interact to form a stable foam when combined. The first foam-generating element (426), as previously described, includes acid and carbonate powders or tablets. The second foam-generating element (428), as previously described, includes a liquid, such as water or other solvent. However, it should be understood that the foam-generating elements may be different from those described in the previous embodiments.

[0222] The foam generating elements (426, 428) are received in separate chambers (412, 468) (receptacles) of the cartridge (410). A releasable partition separates the foam generating elements (426, 428) from each other, preventing or limiting mixing or interaction until desired. The powder (426) is received in the first chamber (412) and the liquid is received in the second chamber (468). The first and second chambers (412, 468) can be considered foam generating element receiving portions of the cartridge (410).

[0223] The second chamber (468) comprises a tube having an open end (538) and a closed end (540). At least a portion of the wall of the second chamber (468) is made of a flexible material so that pressure can be manually applied to the liquid contained in the chamber (468). The first chamber (412) is preferably configured to seal or close the open end (538) of the second chamber (468). While this description indicates that the first chamber (412) is at least partially receivable within the second chamber (468), it should be understood that this is not always the case. The first chamber (412) preferably includes a stop (542) (here, a flange) having a diameter that matches or is larger than the diameter of the opening at the open end (538) of the second chamber (468) to prevent or limit excessive insertion of the first chamber (412) into the second chamber (468). The flange (542) may provide support to the first chamber (412).

[0224] The first chamber (412) includes pierceable walls (544, 546) (seals) at each end. Each seal is preferably planar. At the first end, forming an openable partition (544) between the foam-generating elements (426, 428), the first pierceable wall (544) is preferably made of a metal foil, such as aluminum foil. However, other materials, sheets, or membranes may be used for the first pierceable wall. The metal foil (544) can provide adequate sealing force and extend the cartridge shelf life.

[0225] At the second end of the first chamber (412), which may form a barrier between the cartridge (410) and the carrier (472), the second pierceable wall (546) may be comprised of a flexible sheet or membrane, such as a sheet of food-grade silicone. However, it should be understood that other materials, sheets, foils, etc. may be used, which do not necessarily have to be flexible. It should be understood that a seal at the second end of the first chamber may not be strictly necessary, for example, in instances where the first foam-generating element is a tablet. However, the second pierceable wall (546) may contribute to providing a long shelf life for the cartridge (410).

[0226] The second pierceable wall (546) preferably forms only a portion of the second end of the first chamber (412), thereby allowing for the use of a more rigid material or structure in the remainder of the second end, thereby contributing to maintaining the structural integrity of the first chamber and cartridge. However, it should be understood that in some configurations, the entire second end may be pierceable. The second pierceable wall (546) may be a sheet of material separate from the remainder of the second end, or alternatively, the second pierceable wall (546) may only be a region of the second end having a thinner wall thickness to aid in piercing.

[0227] The second pierceable wall (546) is preferably elongated in shape (for reasons that will be explained below).

[0228] 17, cartridge receiver 478 is preferably at or adjacent to the rear of carrier 472 and may be an opening or recess in carrier 472. Recess 478 may be sized to receive at least a majority of cartridge 410 inserted therein. Cartridge receiver 478 includes wall 548 to prevent over-insertion of cartridge 410 into carrier 472. Cartridge 410 preferably closes the opening of cartridge receiver 478 to prevent bubbles from escaping therefrom.

[0229] At or adjacent to cartridge receiving portion 478, and here projecting from wall 548, are at least one, and preferably two, protrusions 448a, 448b (protrusions) configured to pierce first pierceable wall 544, second pierceable wall 546, or both, of cartridge 410 when received in carrier 472.

[0230] Protrusions 448a, 448b may be pointed to assist in piercing the pierceable walls, although it should be understood that this may not be necessary. Each protrusion 448a, 448b also preferably includes a passageway that assists in allowing fluid to flow through the perforations made in pierceable walls 544, 546 by protrusions 448a, 448b.

[0231] The two protrusions 448a, 448b are spaced apart from one another, with the first protrusion 448a projecting from the lower portion of the wall 548 and the second protrusion 448b projecting from the upper portion of the wall 548. The spacing between the protrusions 448a, 448b assists in proper mixing of the foam generating elements 426, 428.

[0232] The first protrusion (448a) has a longer protruding range than the second protrusion (448b), such that the first protrusion (448a) is configured to extend underneath the elongated second pierceable wall (546), through the first pierceable wall (544), and through the first chamber (412). The first protrusion (448a) defines an open-topped channel (550) to prevent the first protrusion (448a) from blocking the perforations in the first pierceable wall (544).

[0233] The second protrusion 448b is configured to extend partially into the first chamber 412. The second protrusion 448b includes a bore 552 that allows bubbles to flow or expand therethrough. The bore 552 extends through the second pierceable wall 546. The diameter of the second protrusion 448b is larger than the diameter of the second protrusion 448a, which may be beneficial in allowing bubbles to pass therethrough.

[0234] The carrier 472 preferably includes an expansion chamber 414 and a conduit 484 located between the cartridge receiver 478 and the outlet 482. The expansion chamber 414 and the conduit 484 may be collectively considered a passageway (fluid flow path) between the cartridge receiver 478 and the outlet 482. The expansion chamber 414 is preferably located at or adjacent to the bore 552 of the second projection 448b and the receiver 478. The bore 552 may have a flare 554 at or adjacent the end of the expansion chamber 414, which may encourage foam. The expansion chamber 414 is so named because it provides space for the foam to expand.

[0235] The expansion chamber (414) may be transparent so that the bubble can be seen during use, although it should be understood that this may not be necessary. The expansion chamber (414) may be flexible to allow manual manipulation thereof, although it should again be understood that this may not be necessary.

[0236] The conduit 484 preferably extends from the outlet 482 into the expansion chamber 414. The conduit 484 preferably has an inlet opening 480 for receiving foam from the expansion chamber 414. The inlet opening 480 of the conduit 484 is preferably off-center with respect to the expansion chamber 414, at the bottom or lower portion of the expansion chamber 414 during use. This allows for greater consumption of foam within the expansion chamber 414 as the foam may sink to the bottom due to gravity. Additionally or alternatively, the inlet opening 480 is closer to the cartridge receiver 478 than the outlet 482. Again, this may allow for greater consumption of foam within the expansion chamber 414 when the device is used in an angled orientation, for example, such that the cartridge receiver 478 is lower than the outlet 482.

[0237] Conduit 484 may also preferably include a drop, step, or turn 556, in which case conduit 484 is not straight, although it should be understood that this is not required. Conduit 484 may also include a check valve, a Venturi, or both, as described in the previous embodiment.

[0238] The outlet 482 (mouthpiece) is preferably cross-shaped or substantially cross-shaped, although it should be understood that other shapes are contemplated. The outlet 482 may additionally or alternatively be a widened portion of a conduit 484, which may facilitate the evacuation of foam therefrom.

[0239] The carrier may include a holder (558) that receives the expansion chamber (414) and may define at least a portion of the conduit (484). The holder (558) may be formed, for example, of a more rigid material than the expansion chamber (414). It should be understood that the fourth embodiment of the device (474) may include sensors, seals, lighting, acoustic means, or multiples thereof, as previously described for the previous embodiments.

[0240] In use, the third embodiment of the device (474) may function in a manner similar or identical to the previously described embodiments. The cartridge (410) is inserted into the cartridge receiver (478). This action causes the first protrusion (448a) to first pierce the second pierceable wall (546), extend through the first chamber (412), and then pierce the first pierceable wall (544) to open the septum between the foam-generating elements (426, 428). Similarly, the second protrusion (448b) may pierce the second pierceable wall (546). The user may then squeeze the exposed end of the second flexible chamber (468) to apply pressure to the liquid, forcing it through the channel (550) defined by the perforations and the first protrusion (448a) and into the first chamber (412). This is shown by line A in FIG. 17. In the first chamber 412, the foam generating elements 426, 428 mix and interact to generate a stable foam that flows (expands) through the bore 552 of the second protrusion 448b into the expansion chamber 414, as indicated by arrow B. The expansion chamber 414 becomes filled or partially filled with the stable foam. The stable foam may then be drawn into the user's mouth by inhalation on the outlet 482 through the conduit 484 and out of the outlet 482, where it may be inhaled (consumed). The stable foam may be consumed by multiple inhalations or over an extended period of time.

[0241] Referring to Figure 18, a fourth embodiment of a foam suction device (874) (foam consumption device, foam dispensing device, or foam suction device) is shown. The fourth embodiment of the foam suction device 874 is similar to the third embodiment of the foam suction device (474), and it may be considered that the fourth embodiment has similar or identical components or features as the third embodiment.

[0242] However, the foam suction device (874) of the fourth embodiment further includes a foam volume delivery control element (984), a side air inlet (986), and a control valve.

[0243] The foam volume dispensing control element 984 is a component for limiting or slowing the amount of foam dispensed from the outlet 882 of the carrier 872 of the device 874. To accomplish this, the foam volume dispensing control element 984 includes a partial septum 984 that blocks a portion of the cross-section of the fluid flow path between the cartridge receiver 878 that receives the cartridge 810 and the outlet 882. Because the cartridge 810 includes a foam-generating element, foam flows from the cartridge 810 during use. Thus, the foam is impeded by the partial septum 984 as it travels from the cartridge receiver 878 through the outlet 882 to the user's mouth. For example, the partial septum 984 can slow the passage of foam via frictional forces.

[0244] The foam volume dispensing control element 984 may be located at the location of the outlet 882. In other words, the foam volume dispensing control element 984 may be located within an opening that defines the outlet 882. However, it should be understood that the control element 984 may be located away from the outlet 882, for example, within a conduit of the carrier 872.

[0245] Preferably, the partial partition (984) is made of a porous material. For example, the material may have pores with a diameter of 2 mm or less, although it should be understood that pores of other diameters may be used. Small pores are preferred to most effectively block the passage of bubbles. However, the pores preferably have a diameter larger than the size of the bubbles (e.g., 0.5 mm) to maintain the structure of the bubbles. Smaller pore diameters may also be used, but in this case, finer bubbles may be produced.

[0246] A suitable material for the partial septum 984 may be sintered metal. Thus, the partial septum 984 may be constructed from sintered steel or sintered bronze. However, other materials, such as plastic, may also be considered.

[0247] The side air inlet 986 is spaced apart from and positioned to the side of the outlet 882. The side air inlet 986 is in fluid communication with the fluid flow path (conduit) in the carrier 872 between the cartridge receiver 878 and the outlet 882, so that when a user inhales into the outlet 882, the outlet 882 draws air from the side air inlet 986 into the fluid flow path. The side air inlet 986 is preferably spaced a sufficient distance from the outlet 882 so that it is not obstructed by the user's mouth when inhaling into the outlet 882. For example, the outlet 882 may be spaced at least approximately 20 mm apart.

[0248] A control valve is located between cartridge receiver 878 and outlet 882 to selectively allow foam to flow therebetween. The control valve is opened and closed by user control 990. In this manner, the user can determine when to allow foam to flow through outlet 882.

[0249] The control valve is preferably normally closed and requires continuous operation of the user control (990) to hold the valve open, thereby reducing the risk of the control valve being unintentionally left open and allowing foam to escape.

[0250] The valve may be biased via a spring, and the user control may be a push button 990. For example, the valve may comprise an obstruction element, stopper, or bung received in the fluid flow path (conduit) to block the fluid flow path. When the push button 990 is pressed, this can force the obstruction element out of the fluid flow path, allowing foam to flow to the outlet 882. In this manner, the user compresses against the spring. When the push button 990 is released, the spring is released, which may cause the blocking element to return into the fluid flow path to obstruct the fluid flow path. To facilitate long-term use of the device 874, the valve may have a releasable locking element, such as a locking pin received through an aperture, to lock the valve in an open position.

[0251] In addition to the control valve, a check valve may be present.

[0252] As shown in Figures 19 and 20, cartridge (810) preferably has at least one finger grip (992) to allow for easy removal from carrier (872), with each finger grip (992) at or adjacent to the rear end of cartridge (810). In this example, there are finger grips (992) on two sides of cartridge (810), although preferably there are three finger grips (992) on each side of cartridge (810). Cartridge (810) preferably has a pierceable seal (946) at the front end of the end of cartridge (810).

[0253] Referring to Figures 21 to 26, a fifth embodiment of a foam suction device (foam suction device) is shown. This embodiment comprises a carrier (672) shown in Figures 21 to 23, which receives a cartridge (610) shown in Figures 24 to 26. The device is electrically operated, here powered by a battery (760), and is therefore battery operated, although it should be understood that other power sources are contemplated.

[0254] The foam is generated by stirring the liquid with a stirring means, which includes at least a motor 762 and a battery 760. The stirring means is sometimes called an agitator.

[0255] 21-23, carrier 672 preferably includes carrier body 676 housing motor 762 and battery 760. Carrier 672 further includes receptacle 678 for receiving cartridge 610 on or within carrier body 676. Receptacle 678 is a recess or open-ended chamber defined by carrier body 676 and sized to receive at least a portion of cartridge 610 therein. Preferably, receptacle 678 receives only a portion of cartridge 610 therein, with the end of cartridge 610 protruding beyond the end of receptacle 678.

[0256] Carrier 672 further includes a carrier foam inlet 680 for receiving foam from cartridge 610 when cartridge 610 is received in receptacle 678. Carrier 672 also includes a carrier foam outlet 682 for dispensing foam to a user, which in this example is defined by mouthpiece 764. A carrier foam conduit 684 (passageway, flow path) connects carrier foam inlet 680 and carrier foam outlet 682.

[0257] Carrier 672 further includes a carrier foam inlet 680 for receiving foam from cartridge 610 when cartridge 610 is received in receptacle 678. Carrier 672 also includes a carrier foam outlet 682 for dispensing foam to a user, which in this example is defined by mouthpiece 764. A carrier foam conduit 684 (passageway, flow path) connects carrier foam inlet 680 and carrier foam outlet 682.

[0258] The carrier foam conduit 684 may include a chamber 684a adjacent to the mouthpiece 764. However, it should be understood that this may be omitted.

[0259] A check valve may be present in the carrier foam conduit (684) to allow foam movement from the carrier foam inlet (680) to the carrier foam outlet (682) and to prevent or limit fluid movement from the carrier foam outlet (682) to the carrier foam inlet (680).

[0260] The carrier further comprises a carrier air inlet (690) and an air flow conduit (766) extending from the carrier air inlet (690) and terminating at a carrier air outlet (768) within or adjacent to the receptacle (678). The carrier air inlet (690) is open to the exterior of the carrier (672) during use and is separate from, and preferably located away from, the carrier foam outlet (682). For example, the carrier foam outlet (682) is preferably positioned so that it is not covered by the user's mouth when the user inhales from the carrier foam outlet (682). Preferably, the carrier air inlet (690) is located at the base of the carrier (672). Like the carrier foam conduit (684), the air flow conduit (766) preferably protrudes into the receptacle (678) to allow penetration into the cartridge (610).

[0261] The air flow conduit (766) and carrier air outlet (768) are located below the carrier foam conduit (684) and carrier foam inlet (680) during use.

[0262] The agitation means is preferably driven by an electric motor 762 and includes air moving means for moving air from the carrier air inlet 690 to the carrier air outlet 768. The air moving means may be an air pump 770. For example, the air pump 770 may be a fan or impeller rotatable by the electric motor 762, but may also take other forms.

[0263] The device preferably includes a pressure sensor 712, which in this example is housed in carrier 672. Pressure sensor 712 is in fluid communication with carrier foam outlet 682 so as to detect the application of negative pressure to carrier foam outlet 682, wherein pressure sensor 712 is located adjacent to or within chamber 684a, which is located proximate mouthpiece 764.

[0264] The device includes a processor, which in this example is provided on or by a printed circuit board (772), which is again housed in a carrier (672). A battery (760), a motor (762), and a pressure sensor (712) are connected to the printed circuit board (772), and when the pressure sensor (712) detects negative pressure, the processor supplies power from the battery (760) to operate the motor (762), which in turn drives the air pump (770).

[0265] Motor (762) is preferably a brushless electric motor.

[0266] The battery 760 may be rechargeable, and therefore may have power terminals to allow charging. Additionally or alternatively, the battery 760 may be removable from the carrier 672 to allow replacement. The battery 760 may not be replaceable or rechargeable, in which case the carrier 672 may need to be discarded after the battery 760 is discharged.

[0267] Referring now in particular to Figures 24 to 26, the cartridge (610) has a cartridge foam outlet (654) and defines a reservoir for containing a liquid for generating foam via agitation.

[0268] The liquid may contain at least one foaming agent, surfactant, stabilizer, thickener, or combination thereof to allow for foam generation upon agitation. This may include lectin, xanthan gum, or both. The foaming agent, and the liquid as a whole, should be food-safe to allow for human consumption.

[0269] The liquid may contain an acid, such as citric acid or sodium bicarbonate, a carbonate, or both. If the acid and carbonate are contained in the cartridge, they may already be generating bubbles, carbon dioxide, or both, and the resulting salt, such as sodium citrate, may be present in the cartridge (610) prior to use of the device. If carbon dioxide is generated from such a reaction while the cartridge (610) is sealed, spontaneous bubbles may be generated when the cartridge (610) is opened due to a drop in pressure and the release of dissolved carbon dioxide. However, even in this case, the method of bubble generation is primarily agitation.

[0270] Cartridge (610) is preferably elongated and tubular or substantially tubular, and in this example, cartridge (610) has a flat end containing cartridge foam outlet (654) and a rounded end opposite the flat end.

[0271] It should be understood that cartridge (610) may be constructed from a flexible material to allow for manual manipulation, but cartridge (610) may alternatively be constructed from a rigid material.

[0272] The cartridge (610) also preferably includes a cartridge air inlet (774). The cartridge air inlet (774) is preferably located at or adjacent to the cartridge foam outlet (654), for example at the flat end, although it should be understood that the cartridge air inlet (774) may be located elsewhere. The cartridge air inlet (774) is preferably located below the cartridge foam outlet (654) in use.

[0273] Cartridge (610) preferably has an air injection conduit (776) extending from cartridge air inlet (774) to interior (778) of cartridge (610) for injecting air into cartridge (610) through at least one opening (780) in air injection conduit (776). Preferably, air injection conduit (776) is elongated and has a plurality of openings (780) therein that are spaced apart from one another along the longitudinal extent of air injection conduit (776).

[0274] There may be at least one opening (780) on two opposite sides of the air injection conduit (776). Preferably, the openings (780) on both sides are aligned with each other.

[0275] Each opening (780) may be circular. Preferably, there are at least five openings (780), and in this example, there are seven openings (780) on each of opposite sides of the air injection conduit (776).

[0276] Alternatively, each opening (780) may have a partial or semicircular shape. In this case, each side of the air injection conduit (776) may have multiple pairs of openings (780), each pair of openings (780) spaced apart from one another laterally along the conduit. Preferably, there are seven pairs of openings (780) on each side of the conduit.

[0277] The cartridge air inlet 774 and the cartridge foam outlet 654 are each closed by a pierceable or otherwise reclosable seal, e.g., in this example, the cartridge air inlet 774 and the cartridge foam outlet 654 each have a pierceable seal that is also preferably flexible, such as a silicone seal.

[0278] The carrier foam conduits (684) and air flow conduits (766) of the carrier (672) are positioned to pierce the cartridge foam outlets (654) and cartridge air inlets (774), respectively, when the cartridge (610) is received in the receptacle (678) of the carrier (672). This is accomplished by having the conduits protrude into the receptacle (678), as previously described. Furthermore, the width (diameter) of each conduit is sized to fit within its respective outlet and inlet. A flexible seal interface may form a seal with each conduit to reduce leakage of liquid or foam. Additionally or alternatively, the conduits may be sized to sealingly engage the periphery of the outlet or inlet.

[0279] The cartridge 610 and carrier 672 are configured such that, when the cartridge 610 is received in the receiver 678, the cartridge air inlet 774 connects with the carrier air outlet 768 and the cartridge foam outlet 654 connects with the carrier foam inlet 680. Although not shown, to reduce the risk of misconnection between the carrier air outlet 768 and the cartridge foam outlet 654, and between the cartridge air inlet 774 and the carrier foam inlet 680, the cartridge 610, the receiver 678, or both, may be shaped to only allow the cartridge 610 to be received in the correct orientation. For example, the cartridge 610 may have protrusions and the carrier 672 may have recesses or grooves to ensure the cartridge 610 and carrier 672 are correctly positioned relative to each other. Alternatively, the inlets and outlets may be asymmetrically positioned to allow connection in only one orientation.

[0280] The device may be configured to activate the agitation means only when the cartridge 610 is received in the carrier 672. To accomplish this, the carrier 672 is preferably configured to detect when the cartridge 610 is received in the receptacle 678. The carrier 672 may include a switch that is activated when the cartridge 610 is received in the receptacle 678. For example, the carrier 672 may have exposed electrical contacts or terminals, and the cartridge 610 may have conductive portions disposed thereon, such that the electrical contacts are connected by the conductive portions when the cartridge 610 is received in the receptacle 678. Alternatively, the carrier 672 may include a manual or pressure-sensitive switch or button that is depressed when the cartridge 610 is received in the receptacle 678. Either switch may be connected to the processor on the printed circuit board 772 so that the processor recognizes the presence of the cartridge 610 when it is received in the carrier 672. In this way, the processor can activate the agitation means only when the cartridge 610 is detected and when the pressure or airflow sensor detects drawing air at the mouthpiece 764. This is to prevent the battery 760 from being drained by inadvertently running the motor.

[0281] In use, when a user desires to consume foam, a cartridge (610) pre-filled with liquid is inserted into the receptacle (678). The carrier foam conduit (684) and the air flow conduit (766) perforate or penetrate the cartridge foam outlet (654) and the cartridge air inlet (774), respectively. The cartridge (610) operates a switch such that the processor detects the presence of the cartridge (610).

[0282] The user then inhales (inhales) through the mouthpiece 764 of the carrier 672. This creates a negative pressure within the carrier foam conduit 684, which is detected by the pressure sensor 712. Because the processor recognizes the presence of the cartridge 610, it activates a motor that draws power from the battery 760 to activate the air pump 770. The air pump 770 draws air from the carrier air inlet 690, along the air flow conduit 766, and through the carrier air outlet 768 into the cartridge 610. The air is then injected into the liquid through the opening 780 of the air injection conduit 776. This effectively aerates the liquid, and the agitation causes the liquid to turn into a foam.

[0283] Suction applied by the user draws foam from the cartridge (610) through the cartridge foam outlet (654) and along the carrier foam conduit (684). This allows the user to inhale foam into their mouth through the carrier foam outlet (682). Once the user has inhaled sufficient foam, they may stop inhaling and deactivate the agitation means. Suction on the mouthpiece (764) to generate foam via agitation may be repeated to allow the user to consume more foam until the liquid in the cartridge (610) is completely consumed.

[0284] As described above, rather than a device intended solely for short-term effervescence or rapidly inhaled inhalants, it is possible to provide a device that produces a stable foam, allowing the user to ingest or inhale the substance contained within the foam over a prolonged period of time in multiple puffs. This provides a smoking alternative device or an alternative to tobacco, without the need for combustion or heating. The device or cartridge for the device may be configured without electrical current, reducing or eliminating the need for charging.

[0285] When used herein in connection with the present invention, the words "comprises / comprising" and "having / including" are used to specify the presence of stated features, integers, steps or components, but do not exclude the presence or addition of one or more other features, integers, steps, components or groups thereof.

[0286] It will be understood that certain features of the invention, which are, for clarity, described in the context of separate embodiments, may also be provided in combination in a single embodiment. Conversely, various features of the invention, which are, for brevity, described in the context of a single embodiment, may also be provided separately or in any suitable subcombination.

[0287] The above-described embodiments have been provided by way of example only, and it will be apparent to those skilled in the art that various other modifications may be made without departing from the scope of the present invention as defined herein.

Claims

1. a foam generating element receiving portion (78; 278; 478, 678; 878); a foam generating element (26, 28; 426, 428) for generating foam; an outlet (82; 282; 482; 682; 882) for dispensing foam to a user; a fluid flow path fluidly communicating the foam generating element receiving portion (78; 278; 478, 678; 878) with the outlet (82; 282; 482; 682; 882), such that the foam generated by the foam generating element (26, 28; 426, 428) flows to the outlet (82; 282; 482; 682; 882) and can be inhaled by a user; Foam inhalation devices for generating foam to be inhaled by a user (74; 474; 874).

2. and a foam volume dispensing control element (984) for limiting the amount of foam dispensed at the outlet (882).

10. The foam suction device (874) of claim 1.

3. The foam volume discharge control element (984) is provided at the location of the outlet (882).

3. The foam suction device (874) of claim 2.

4. The foam volume discharge control element (984) is a partial partition (984) that blocks a part of the cross section of the fluid flow path. A foam suction device (874) according to claim 2 or claim 3.

5. The partial partition (984) is made of a porous material having a plurality of pores with a diameter of less than 2 mm.

5. The foam suction device (874) of claim 4.

6. The partial partition wall (984) is made of sintered metal. A foam suction device (874) according to claim 4 or claim 5.

7. The partial partition (984) is made of sintered steel.

7. The foam suction device (874) of claim 6.

8. further comprising an air inlet (986) in fluid communication with the fluid flow path between the outlet (882) and the foam generating element receiving portion (878); the air inlet (986) is located on a side of the outlet at a position remote from the outlet; A foam suction device (874) according to any one of claims 1 to 7.

9. the air inlet (986) is at least 20 mm away from the outlet (882); 9. The foam suction device (874) of claim 8.

10. further comprising a valve between said foam generating element receiving portion (878) and said outlet (882) for selectively permitting foam flow; The valve can be opened and closed via a user control (990). A foam suction device (874) according to any one of claims 1 to 9.

11. the valve is biased to a closed state and configured such that continuous operation of the user control (990) is required to maintain the valve open.

11. The foam inhaler (874) of claim 10.

12. The valve is biased via a spring.

12. The foam inhaler (874) of claim 11.

13. the user control is a push button (990); A foam suction device (874) according to any one of claims 10 to 12.

14. There are a plurality of foam generating elements (26, 28; 426, 428), and at least one of the foam generating elements (26, 28; 426, 428) is separated from the other foam generating elements (26, 28; 426, 428) by an openable / closable partition wall. A foam suction device (874) according to any one of claims 1 to 13.

15. Further, the device includes protrusions (48; 448a, 448b) for opening the openable partition. A foam inhaler device (74; 474; 874) according to claim 14.

16. Further, the container has a pull tab for opening the reclosable partition.

15. The foam inhaler of claim 14.

17. the openable partition includes a valve; the device further comprising a user control for actuating a valve to communicate a foam generating element; 15. The foam inhaler of claim 14.

18. The foam inhaler is a stable foam inhaler (74; 474; 874) for dispensing a stable foam, and the foam generating element is a stable foam generating element (26, 28; 426, 428). A foam inhaler (74; 474; 874) according to any one of claims 1 to 17.

19. the fluid flow path includes a conduit (84, 64; 484; 684) at or near the outlet (82; 282; 482; 682; 882); A foam inhaler (74; 474; 874) according to any one of claims 1 to 18.

20. the fluid flow path includes an expansion chamber (14; 414) between the foam generating element receiving portion (78; 278; 478, 678; 878) and the outlet (82; 282; 482; 682; 882); A foam inhaler (74; 474; 874) according to any one of claims 1 to 19.

21. The stable foam generating element (26, 28; 426, 428) is received in a non-electric inhalation cartridge (10; 410; 610; 810); A foam inhaler device (74; 474; 874) according to claim 18.

22. the non-electrical inhalation cartridge (810) having at least one finger grip (992) at its distal end relative to the outlet (882); 22. The foam inhaler (874) of claim 21.

23. The stable foam-generating elements (26, 28; 426, 428) are present in plurality, and as a whole contain a carbonate and an acid; A foam inhaler device (74; 474; 874) according to claim 18.

24. an element for generating bubbles; agitation means (762; 770) for agitating said elements to generate said foam; an outlet (682) for dispensing said foam to a user; Foam inhaler.

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