Patent Description:
Electronic vapour or aerosol provision systems such as electronic cigarettes (e-cigarettes) generally contain a vapour precursor material, such as a reservoir of a source liquid containing a formulation, which may or may not include nicotine, or a solid material such as a tobacco-based product, from which a vapour is generated for inhalation by a user, for example through heat vaporisation. Thus, a vapour provision system will typically comprise a vapour generation chamber containing a vaporiser, e.g. a heating element, arranged to vaporise a portion of precursor material to generate a vapour in the vapour generation chamber. As a user inhales on the device and electrical power is supplied to the vaporiser, air is drawn into the device through inlet holes and into the vapour generation chamber where the air mixes with the vaporised precursor material and forms a condensation aerosol. There is a flow path between the vapour generation chamber and an opening in the mouthpiece so the incoming air drawn through the vapour generation chamber continues along the flow path to the mouthpiece opening, carrying some of the vapour / condensation aerosol with it, and out through the mouthpiece opening for inhalation by the user. Some electronic cigarettes may also include a flavour element in the flow path through the device to impart additional flavours. Such devices may sometimes be referred to as hybrid devices and the flavour element may, for example, include a portion of tobacco arranged in the air path between the vapour generation chamber and the mouthpiece so that vapour / condensation aerosol drawn through the devices passes through the portion of tobacco before exiting the mouthpiece for user inhalation.

In some systems the supply of power to the vaporiser is activated manually, for example by a user pressing an activation button when they wish to generate vapour for inhalation. Devices that operate in this way may be referred to as button-activated / button-actuated devices. In some other systems the supply of power to the vaporiser is activated automatically in response to user inhalation, for example using a pressure or airflow sensor to detect when a user is inhaling on the device. Devices that operate in this way may be referred to as puff-activated / puff-actuated devices.

Aerosol provision systems are generally formed from an aerosol provision device, which is reusable, and a cartridge or consumable which is formed of lower cost components and can be designed to be thrown away after use (i.e., after the aerosolisable material has been aerosolised). Since the cartridges are generally reasonably inexpensive to manufacture, cartridges can be manufactured to have a correct size or electrical connections for use with a given aerosol provision device. However, this arrangement has a disadvantage in that counterfeit cartridges can be manufactured with the correct configuration in order to be used with the given aerosol provision device. These counterfeit cartridges may not adhere to the strict manufacturing or distributing regulations normally imposed on genuine cartridges, in particular to the liquids stored within the cartridges, which can lead to poor quality and a lower quality user experience.

<CIT> describes a vapour provision system comprising a cartridge part comprising a vaporiser for generating a vapour from a vapour precursor material for inhalation by a user; and a device part comprising a power supply, for supplying power to the vaporiser across an electrical interface established between the cartridge part and the device part when the cartridge part is coupled to the device part for use. The electrical interface is provided by sprung pins in one of the cartridge part and the device part and a circuit board with contact pads in the other of the cartridge part and the device part.

<CIT> describes an electronic personal vaporizer including a heating element, a liquid container, a power source to provide power to the heating element, and a shell containing the heating element, liquid container and power source made of flexible printed circuit board rolled around the other components to allow for electronic communications to pass along the vaporizer.

<CIT> describes an aerosol-generating article and an aerosol-generating device having a detector capable of detecting the presence of the aerosol-generating article and distinguishing the aerosol-generating article from other articles based on a spectroscopic signature of a taggant incorporated within a material of the aerosol-generating article.

<CIT> describes a cartridge for use with an aerosol generating system that comprises an electrical resistor having an customized resistance value mounted to the cartridge, the resistance value indicative of an aerosol-forming substrate comprised in the cartridge.

Various approaches are described which seek to help address some of these issues.

According to a first aspect of certain embodiments there is provided an aerosol provision system for generating an aerosol for user inhalation, the system comprising a cartridge comprising a housing containing an aerosolisable material, and an aerosol provision device having an interface configured operatively to receive the cartridge and being configured in use to cause the aerosolisable material to generate the aerosol for user inhalation by energising the aerosol generating material, wherein cartridge includes a data storage unit configured to store information relating to the cartridge, wherein the information relating to the cartridge is an identifier which identifies the cartridge and the data storage unit stores a digital representation of the identifier, the aerosol provision device being configured to detect the information stored in the data storage unit when the cartridge is received by the aerosol provision device and wherein the data storage unit is integrally formed with one or more walls of the housing such that removal of the data storage unit renders one or both of the data storage unit and the cartridge inoperable.

According to a second aspect of certain embodiments there is provided a cartridge for use with an aerosol provision device, the cartridge comprising:a housing containing an aerosolisable material, wherein the cartridge is configured to cause the aerosolisable material to generate an aerosol for user inhalation when energy is provided to the aerosol generating material when the cartridge is received in an interface of the aerosol provision device; the cartridge including a data storage unit configured to store information relating to the cartridge for detection by the aerosol provision device, wherein the information relating to the cartridge is an identifier which identifies the cartridge and the data storage unit stores a digital reprentation of the identifier, and wherein the data storage unit is integrally formed with one or more walls of the housing such that removal of the data storage unit renders one or both of the data storage unit and the cartridge inoperable.

According to a third aspect of certain embodiments there is provided a method of manufacturing a cartridge for use with an aerosol provision device the method comprising
forming at least a part of a housing, and disposing an aerosolisable material within the housing, wherein the forming the housing includes integrally forming one or more walls of the housing with a data storage unit configured to store information relating to the cartridge, wherein the information relating to the cartridge is an identifier which identifies the cartridge and the data storage unit stores a digital representation of the identifier, such that removal of the data storage unit renders one or both of the data storage unit and the cartridge inoperable.

It will be appreciated that features and aspects of the invention described above in relation to the first and other aspects of the invention are equally applicable to, and may be combined with, embodiments of the invention according to other aspects of the invention as appropriate, and not just in the specific combinations described above.

Embodiments of the present technique will now be described, by way of example only, with reference to the accompanying drawings, in which like parts have identical numerical references and in which:.

The present disclosure relates to vapour provision systems, which may also be referred to as aerosol provision systems, such as e-cigarettes, including hybrid devices. Throughout the following description the term "e-cigarette" or "electronic cigarette" may sometimes be used, but it will be appreciated this term may be used interchangeably with vapour provision system / device and electronic vapour provision system / device. Furthermore, and as is common in the technical field, the terms "vapour" and "aerosol", and related terms such as "vaporise", "volatilise" and "aerosolise", may generally be used interchangeably.

Vapour provision systems (e-cigarettes) often, though not always, comprise a modular assembly including both an aerosol provision device and a replaceable (disposable) cartridge part. Often the replaceable cartridge part will comprise the vapour precursor material (sometimes referred to herein as aerosolisable material) and the vaporiser and the aerosol provision device will comprise the power supply (e.g. rechargeable battery), activation mechanism (e.g. button or puff sensor), and control circuitry. However, it will be appreciated these different parts may also comprise further elements depending on functionality. For example, for a hybrid device the cartridge part may also comprise an additional flavour or aerosol modifying element, e.g. a portion of tobacco, provided as an insert ("pod"). In such cases the flavour element insert may itself be removable from the disposable cartridge part so it can be replaced separately from the cartridge, for example to change flavour or because the usable lifetime of the flavour element insert is less than the usable lifetime of the vapour generating components of the cartridge. In other implementations, the flavour element is integrally provided with the cartridge. The reusable device part will often also comprise additional components, such as a user interface for receiving user input and displaying operating status characteristics.

For modular devices a cartridge and control unit are electrically and mechanically coupled together for use, for example using a screw thread, latching or bayonet fixing with appropriately engaging electrical contacts. When the vapour precursor material in a cartridge is exhausted, or the user wishes to switch to a different cartridge having a different vapour precursor material, a cartridge may be removed from the control unit and a replacement cartridge attached in its place. Devices conforming to this type of two-part modular configuration may generally be referred to as two-part devices or multi-part devices.

It is relatively common for electronic cigarettes, including multi-part devices, to have a generally elongate shape and, for the sake of providing a concrete example, certain embodiments of the disclosure described herein will be taken to comprise a generally elongate multi-part device employing disposable cartridges with a tobacco pod insert. More generally, it will be appreciated certain embodiments of the disclosure are based on electronic cigarettes that are configured to provide activation functionality in accordance with the principles described herein, and the specific constructional aspects of electronic cigarette configured to provide the described activation functionality are not of primary significance.

<FIG> is a cross-sectional view through an example e-cigarette <NUM> in accordance with certain embodiments of the disclosure. The e-cigarette <NUM> comprises two main components, namely a reusable part <NUM>, which is referred to in the following description as an aerosol provision device and a replaceable / disposable cartridge part <NUM>. In this specific example the e-cigarette <NUM> is assumed to be a hybrid device with the cartridge part <NUM> including a removable insert <NUM> comprising an insert housing containing a portion of shredded tobacco. However, the fact this example is a hybrid device is not in itself directly significant to the device activation functionality as described further herein.

In normal use the aerosol provision device <NUM> and the cartridge part <NUM> are releasably coupled together at an interface <NUM>. When the cartridge part is exhausted or the user simply wishes to switch to a different cartridge part, the cartridge part may be removed from the aerosol provision device and a replacement cartridge part attached to the aerosol provision device in its place. The interface <NUM> provides a structural, electrical and air path connection between the two parts and may be established in accordance with conventional techniques, for example based around a screw thread, latch mechanism, or bayonet fixing with appropriately arranged electrical contacts and openings for establishing the electrical connection and air path between the two parts as appropriate. The specific manner by which the cartridge part <NUM> mechanically mounts to the aerosol provision device <NUM> is not significant to the principles described herein, but for the sake of a concrete example is assumed here to comprise a latching mechanism, for example with a portion of the cartridge being received in a corresponding receptacle in the aerosol provision device with cooperating latch engaging elements (not represented in <FIG>). However as will be explained shortly, the interface <NUM> is configured so that a data storage unit <NUM> can be read by a reader <NUM>. It will also be appreciated that the interface <NUM> in some implementations may not support an electrical connection between the respective parts. For example, in some implementations a vaporiser may be provided in the aerosol provision device rather than in the cartridge part, or the transfer of electrical power from the aerosol provision device to the cartridge part may be wireless (e.g. based on electromagnetic induction), so that an electrical connection between the aerosol provision device and the cartridge part is not needed.

The cartridge part <NUM> may in accordance with certain embodiments of the disclosure be broadly conventional. In <FIG>, the cartridge part <NUM> comprises a cartridge housing <NUM> formed of a plastics material. The cartridge housing <NUM> supports other components of the cartridge part and provides the mechanical interface <NUM> with the aerosol provision device <NUM>. The cartridge housing is generally circularly symmetric about a longitudinal axis along which the cartridge part couples to the aerosol provision device <NUM>. In this example the cartridge part has a length of around <NUM> and a diameter of around <NUM>. However, it will be appreciated the specific geometry, and more generally the overall shapes and materials used, may be different in different implementations.

Within the cartridge housing <NUM> is a reservoir <NUM> that contains liquid vapour precursor material. The liquid vapour precursor material may be conventional, and may be referred to as e-liquid. The liquid reservoir <NUM> in this example has an annular shape with an outer wall defined by the cartridge housing <NUM> and an inner wall that defines an air path <NUM> through the cartridge part <NUM>. The reservoir <NUM> is closed at each end with end walls to contain the e-liquid. The reservoir <NUM> may be formed in accordance with conventional techniques, for example it may comprise a plastics material and be integrally moulded with the cartridge housing <NUM>.

The flavour element insert (tobacco pod) <NUM> in this example is inserted into an open end of air path <NUM> opposite to the end of the cartridge <NUM> which couples to the control unit <NUM> and is retained by a friction fit. The housing for the flavour element insert <NUM> includes a collar that abuts the end of the cartridge housing <NUM> to prevent over insertion. The housing for the flavour element insert <NUM> also includes an opening at each end to allow air drawn along the air path <NUM> during use to pass through the flavour element insert <NUM> and so pick up flavours from the flavourant within (tobacco in this example) before exiting the cartridge <NUM> though a mouthpiece outlet <NUM> for user inhalation.

The cartridge part <NUM> further comprises a wick <NUM> and a heater (vaporiser) <NUM> located towards an end of the reservoir <NUM> opposite to the mouthpiece outlet <NUM>. In this example the wick <NUM> extends transversely across the cartridge air path <NUM> with its ends extending into the reservoir <NUM> of e-liquid through openings in the inner wall of the reservoir <NUM>. The openings in the inner wall of the reservoir are sized to broadly match the dimensions of the wick <NUM> to provide a reasonable seal against leakage from the liquid reservoir into the cartridge air path without unduly compressing the wick, which may be detrimental to its fluid transfer performance.

The wick <NUM> and heater <NUM> are arranged in the cartridge air path <NUM> such that a region of the cartridge air path <NUM> around the wick <NUM> and heater <NUM> in effect defines a vaporisation region for the cartridge part. E-liquid in the reservoir <NUM> infiltrates the wick <NUM> through the ends of the wick extending into the reservoir <NUM> and is drawn along the wick by surface tension / capillary action (i.e. wicking). The heater <NUM> in this example comprises an electrically resistive wire coiled around the wick <NUM>. In this example the heater <NUM> comprises a nickel chrome alloy (Cr20Ni80) wire and the wick <NUM> comprises a glass fibre bundle, but it will be appreciated the specific vaporiser configuration is not significant to the principles described herein. In use electrical power may be supplied to the heater <NUM> to vaporise an amount of e-liquid (vapour precursor material) drawn to the vicinity of the heater <NUM> by the wick <NUM>.

Vaporised e-liquid may then become entrained in air drawn along the cartridge air path from the vaporisation region through the flavour element insert <NUM> and out the mouthpiece outlet <NUM> for user inhalation.

The rate at which e-liquid is vaporised by the vaporiser (heater) <NUM> will depend on the amount (level) of power supplied to the heater <NUM> during use. Thus electrical power can be applied to the heater to selectively generate vapour from the e-liquid in the cartridge part <NUM>, and furthermore, the rate of vapour generation can be changed by changing the amount of power supplied to the heater <NUM>, for example through pulse width and/or frequency modulation techniques.

The aerosol provision device <NUM> comprises an outer housing <NUM> with an opening that defines an air inlet <NUM> for the e-cigarette, a battery <NUM> for providing operating power for the electronic cigarette, control circuitry <NUM> for controlling and monitoring the operation of the electronic cigarette, a user input button <NUM>, an inhalation sensor (puff detector) <NUM>, which in this example comprises a pressure sensor located in a pressure sensor chamber <NUM>, and a visual display <NUM>.

The outer housing <NUM> may be formed, for example, from a plastics or metallic material and in this example has a circular cross-section generally conforming to the shape and size of the cartridge part <NUM> so as to provide a smooth transition between the two parts at the interface <NUM>. In this example, the aerosol provision device has a length of around <NUM> so the overall length of the e-cigarette when the cartridge part and aerosol provision device are coupled together is around <NUM>. However, and as already noted, it will be appreciated that the overall shape and scale of an electronic cigarette implementing an embodiment of the disclosure is not significant to the principles described herein.

The air inlet <NUM> connects to an air path <NUM> through the aerosol provision device <NUM>. The aerosol provision device air path <NUM> in turn connects to the cartridge air path <NUM> across the interface <NUM> when the aerosol provision device <NUM> and cartridge part <NUM> are connected together. The pressure sensor chamber <NUM> containing the pressure sensor <NUM> is in fluid communication with the air path <NUM> in the aerosol provision device <NUM> (i.e. the pressure sensor chamber <NUM> branches off from the air path <NUM> in the aerosol provision device <NUM>). Thus, when a user inhales on the mouthpiece opening <NUM>, there is a drop in pressure in the pressure sensor chamber <NUM> that may be detected by the pressure sensor <NUM> and also air is drawn in through the air inlet <NUM>, along the aerosol provision device air path <NUM>, across the interface <NUM>, through the vapour generation region in the vicinity of the atomiser <NUM> (where vaporised e-liquid becomes entrained in the air flow when the vaporiser is active), along the cartridge air path <NUM>, and out through the mouthpiece opening <NUM> for user inhalation.

The battery <NUM> in this example is rechargeable and may be of a conventional type, for example of the kind normally used in electronic cigarettes and other applications requiring provision of relatively high currents over relatively short periods. The battery <NUM> may be recharged through a charging connector in the aerosol provision device housing <NUM>, for example a USB connector.

The user input button <NUM> in this example is a conventional mechanical button, for example comprising a spring mounted component which may be pressed by a user to establish an electrical contact. In this regard, the input button may be considered to provide a manual input mechanism for the terminal device, but the specific manner in which the button is implemented is not significant. For example, different forms of mechanical button or touch-sensitive button (e.g. based on capacitive or optical sensing techniques) may be used in other implementations. The specific manner in which the button is implemented may, for example, be selected having regard to a desired aesthetic appearance.

The display <NUM> is provided to give a user with a visual indication of various characteristics associated with the electronic cigarette, for example current power setting information, remaining battery power, and so forth. The display may be implemented in various ways. In this example the display <NUM> comprises a conventional pixilated LCD screen that may be driven to display the desired information in accordance with conventional techniques.

The control circuitry <NUM> is suitably configured / programmed to control the operation of the electronic cigarette to provide functionality in accordance with embodiments of the disclosure as described further herein, as well as for providing conventional operating functions of the electronic cigarette in line with the established techniques for controlling such devices. The control circuitry (processor circuitry) <NUM> may be considered logically to comprise various subunits / circuitry elements associated with different aspects of the electronic cigarette's operation in accordance with the principles described herein and other conventional operating aspects of electronic cigarettes, such as display driving circuitry and user input detection. It will be appreciated the functionality of the control circuitry <NUM> can be provided in various different ways, for example using one or more suitably programmed programmable computer(s) and / or one or more suitably configured application-specific integrated circuit(s) / circuitry / chip(s) / chipset(s) configured to provide the desired functionality.

Thus the vapour provision system <NUM> comprises a user input button <NUM> and an inhalation sensor <NUM>. In accordance with certain embodiments of the disclosure the control circuitry <NUM> is configured to receive signalling from the inhalation sensor <NUM> and to use this signalling to determine if a user is inhaling in the electronic cigarette and also to receive signalling from the input button <NUM> and to use this signalling to determine if a user is pressing (i.e. activating) the input button. These aspects of the operation of the electronic cigarette (i.e. puff detection and button press detection) may in themselves be performed in accordance with established techniques (for example using conventional inhalation sensor and inhalation sensor signal processing techniques and using conventional input button and input button signal processing techniques). More details of a puff control response can be found in our copending UK patent application <CIT>.

As explained in more detail below, the cartridge <NUM> is configured to include a data storage unit <NUM> which, in some examples, forms part of an outer surface of a housing <NUM> of the cartridge <NUM>. The aerosol provision device <NUM> includes a reader <NUM> connected to the controller <NUM> which is configured to read the data from the data storage unit <NUM>. In one example, the data storage unit <NUM> is configured to store an identifier which is related to the identity of the cartridge <NUM>. This is explained in more detail below. It should be appreciated that while only one data storage unit <NUM> is shown in <FIG>, the cartridge <NUM> may be provided with one or more data storage units <NUM>, each having the same or different information (which might be the same identifier for each data storage unit or different identifiers, e.g., two or more different identifiers).

<FIG> and <FIG> provide another example configuration of the aerosol provision system shown in <FIG> with the same parts having the same numerical designations. <FIG> provides a three dimensional representation and <FIG> provides an aspect view. As shown in <FIG>, the aerosol provision device <NUM> is configured with a housing <NUM> having curved side walls in a more tear drop shape and the aerosol provision device <NUM> is configured with an interface <NUM> which can receive the cartridge <NUM> partially within a channel provided within the aerosol provision device <NUM>. As with the example embodiment shown in <FIG>, the data storage unit forms part of the housing <NUM> of the cartridge <NUM>. As shown in <FIG>, the data storage unit <NUM> is positioned within the cartridge <NUM> at a location at which the data storage unit <NUM> can be read by a reader <NUM>. The reader <NUM> is located on or within the aerosol provision device <NUM> so that when the cartridge <NUM> is received within the interface <NUM> of the aerosol provision device <NUM>, the reader <NUM> can read the data present on the data store <NUM>.

As illustrated by the example embodiments of <FIG>, <FIG> and <FIG>, the data storage unit <NUM> is an approximately cuboidal box having various circuitry located therein, which may include a plurality of transistors suitable for storing data. The data storage unit <NUM> can be embedded in the outer surface of the housing <NUM>. However, in other implementations, the data storage unit <NUM> may be located within the housing <NUM> of the cartridge <NUM> as opposed to on an outer surface of the housing <NUM>. For example, the data storage unit <NUM> may be located between two sub-layers of the housing <NUM>. In some example embodiments, the data storage unit <NUM> may be integrally formed with a component of the cartridge <NUM>, for example a layer of the housing <NUM>. The data storage unit <NUM> may be integrally formed in the housing during manufacture of the housing <NUM>, for example.

In some examples, the data storage unit <NUM> may be configured to store an identifier which identifies the cartridge <NUM> as the information relating to the cartridge <NUM>. The data reader <NUM> may be configured to read the data storage unit <NUM> and obtain the identifier therefrom. The data reader <NUM> is coupled to the control unit <NUM> via any suitable data connection, e.g., via electrically conductive wires 62a, and is arranged to transmit a signal indicative of the identifier to the control circuitry <NUM>. As will be described in more detail below, the control circuitry <NUM> receives the signal indicative of the identifier of the cartridge <NUM> and is arranged to cause the device <NUM> to perform an action on the basis of the identifier.

The data storage unit <NUM> in the present example is configured to store a digital representation of the identifier (e.g., a <NUM>-bit identification number). For example, the identifier may be in the form of a binary sequence or of a hexadecimal sequence.

In this example, the data storage unit <NUM> is programmable, meaning that the identifier can be programmed into the data storage unit <NUM>. That is, the data storage units for two cartridges <NUM> may structurally be the same, but can be programmed to store different identifiers accordingly. The programming may be performed before, during, or after manufacture of the cartridge <NUM>. This may simplify the manufacturing process, particularly in the application of the data storage unit <NUM> to (or in) the cartridge. The data storage unit <NUM> may be a write once data storage unit <NUM> (e.g., a write once read many (WORM) data storage unit <NUM>). That is, the data storage unit <NUM> can be written to once (i.e., when the identifier is applied) and then cannot easily be written to again. In other implementations, the data storage unit <NUM> may be re-writable (i.e., it can be written to multiple times) depending upon the application at hand.

The identifier is provided to identify the cartridge. This may be on the basis of the type of aerosolisable material <NUM> of the cartridge <NUM>. Alternatively or additionally, the identifier may identify an origin (geographical and/or manufacturing) of the cartridge <NUM>. Alternatively or additionally, the identifier may uniquely identify the cartridge <NUM>.

As explained above, the cartridge <NUM> includes a data storage unit <NUM> configured to store information relating to the cartridge <NUM>, such as an identifier identifying the cartridge or an indication of properties associated with the cartridge <NUM>, the aerosol provision device <NUM> being configured to detect the information stored in the data storage unit <NUM> when engaged with the cartridge. The data storage unit <NUM> is integrally formed with one or more walls of the housing. For example, the data storage unit may be integrally formed with the one or more walls of the housing <NUM> by embedding circuitry forming the data storage unit <NUM> below the surface of the housing <NUM> with an effect that the circuitry cannot be removed without damaging either the data storage unit or the cartridge <NUM> so that one or both of the data storage unit <NUM> or the cartridge <NUM> is rendered inoperable.

<FIG> provide further detailed illustration of the cartridge <NUM>. <FIG> provides a three-dimensional representation of a cartridge <NUM> which, as explained above, includes the aerosolisable material <NUM> and in use is arranged to generate the aerosol for the user in accordance with the principles explained above. As shown in <FIG> as a three-dimensional representation, the data storage unit <NUM> is embedded below the surface of the cartridge <NUM>. As shown in <FIG> which provide an aspect and plan view of the cartridge <NUM> from positions B and C of <FIG>, the data storage unit <NUM> is embedded within one of the walls of a housing of the cartridge <NUM>. In one example the data storage unit <NUM> is embedded below a surface of the cartridge <NUM>. In this example, the data storage unit <NUM> is embedded below a surface of one of the walls of the housing of the cartridge. In one example the data storage unit <NUM> may be bonded to the material of the housing, using an adhesive so that removal of the data storage unit <NUM> is likely to cause the data storage unit <NUM> to break rather than the housing of the cartridge <NUM>. It is also possible that the housing itself will be breached by attempted removal of the data storage unit <NUM> with the effect that a user is not able to inhale the aerosol generated by the cartridge <NUM>, but in some examples, this may be less likely as a result of a relative strength of the housing walls compared with the strength of the data storage unit. In one example, the housing may be formed from a brittle or frangible material such as some form of plastic which may disintegrate if the data storage unit <NUM> is removed.

A related illustration of the arrangement shown in <FIG> is shown in <FIG> which provide an illustration of a construction of the cartridge <NUM>. As an alternative example, the cartridge <NUM> is shown as a rod similar to the example shown in <FIG>. As indicated from the embodiments shown in <FIG>, the data storage unit <NUM> may be in one example formed into the cartridge <NUM> below a surface of the housing. <FIG> show an illustration of the construction of a cartridge <NUM> in which a housing of the article <NUM> is formed from first and second layers 70a, 70b, by for example over-moulding plastic layers. As shown in <FIG> a first layer of the housing 70a is formed and a data storage unit <NUM> is disposed on the surface of the first layer 70a. A second layer 70b is then formed over the top of the first layer 70a of the housing, as indicated by an arrow <NUM> so that the completed article shown in <FIG> is formed of the first and second layers with the second layer 70b overlaying the first layer as represented by an arrow <NUM> so that the data storage unit <NUM> is embedded below the surface of the second or outer layer 70b within a cavity formed in the second layer during fabrication of the second layer. The data storage unit <NUM> is thereby embedded within the walls of the cartridge <NUM>. According to this example, an over-moulding technique is used to mould the first layer 70a, placing the data storage unit on the first layer 50a, and then moulding the second layer 70b on top of the first layer 70a and the data storage unit <NUM>. The first and second layers 70a, 70b may be formed from plastic.

A further example embodiment is shown in <FIG> provides a plan view illustrating an arrangement in which a data storage unit <NUM> is embedded in a recess of one of the walls of the housing of the cartridge <NUM> whereas <FIG> shows an elevation view of the plan view through a section A-A of <FIG>. As shown in <FIG>, the data storage unit <NUM> is embedded below the surface of the housing of the cartridge <NUM>. As shown in the plan view <FIG>, various wires forming a circuit <NUM> for the data storage unit <NUM> are printed on the surface of the housing of the cartridge <NUM> which connect to the data storage unit <NUM>. One of the printed wires provides a connection to a battery <NUM>. As is shown in <FIG> in the elevation view, the battery <NUM> and the data storage unit <NUM> are embedded below a surface <NUM> of the cartridge <NUM>, whereas the wires forming a circuit <NUM> including the data storage unit <NUM> are printed on the surface of the cartridge. Accordingly any attempt to remove the data storage unit <NUM> will cause the circuit to be broken thereby preventing operation of the cartridge when disposed within the aerosol provision device.

<FIG> provides another example embodiment in which the data storage unit <NUM> is embedded in one of the walls of the housing <NUM> of the cartridge <NUM>. However in the example shown in <FIG>, the cartridge <NUM> is comprised of two parts <NUM>, <NUM> which form between them a recess <NUM> in which the data storage unit is disposed. Thus when formed during manufacture, the two parts are configured with the recess <NUM> in which the data storage unit <NUM> can be housed. In another example the memory and/or circuitry is placed/printed on the surface of the cartridge on an overlapping part of consumable (e.g., two halves of a liquid reservoir). If the user attempts to refill the cartridge by opening the two halves, the memory/circuitry is broken. This could also be embedded in a recess as well. Again any attempt to remove the data storage unit <NUM> will cause the two parts <NUM>, <NUM> to be separated thereby rendering the cartridge inoperable. Accordingly the two parts/halves of the cartridge <NUM>, <NUM> can act as a tamper-proof seal to prevent refilling of the cartridge with unauthorized liquids for example. If the data storage unit <NUM> is removed or broken, the cartridge <NUM> will no longer function when placed in the aerosol provision device <NUM>. According to this example, the housing <NUM> of the cartridge <NUM> may be formed of two separate parts/layers <NUM>, <NUM> which are joined together, where the separate parts define a recess for housing the data storage unit <NUM>. As for the example shown in <FIG>, <FIG>, the data storage unit <NUM> may be completely embedded within the wall / housing of the cartridge <NUM> such that the user cannot physically access the data storage unit <NUM>. In one implementation the memory and/or circuitry is placed/printed on the surface of the cartridge on an overlapping part of consumable (e.g., two halves of a liquid reservoir). If the user attempts to refill the cartridge by opening the two halves, the memory/circuitry is broken.

<FIG> provides a further example in which the circuit forming the data storage unit <NUM> is disposed on a surface of the cartridge <NUM> so that it can be seen from the outside by the user. Accordingly the data storage unit <NUM> and associated circuit <NUM> can be configured to provide a recognisable pattern which can be arranged to represent an authentication of the cartridge as being manufactured by a known source. The user can therefore be confident that the cartridge is a genuine article.

Another example embodiment is shown in <FIG> provides a three dimensional representation of an cartridge <NUM> including a data storage unit <NUM>, in which the data storage unit <NUM> is configured to be frangibly attached in a through-hole <NUM> of a housing of the article with connections to electrical circuits. According to this example, the through-hole <NUM> provides passage of air to pass freely. However, when the data storage unit <NUM> is disposed in the through-hole <NUM>, a seal of the through-hole is formed to that the aerosol can pass to the inhaler, whereas without the data storage unit <NUM> in which, the aerosol will pass through the through-hole <NUM> preventing the user from inhaling the aerosol. By attaching the data storage unit <NUM> to the walls of the housing in the through-hole <NUM>, with a frangible attachment, attempted removal for the data storage unit <NUM> will both damage the data storage unit <NUM> and render the cartridge inoperable. In some embodiments circuitry <NUM> forming the data storage unit <NUM> may include different components some of which may block the through-hole <NUM>, whereas one or more other components may be embedded into a wall of the housing of the cartridge. As a result, attempted removal of the data storage unit <NUM> is likely to render both the data storage unit <NUM> inoperable and the cartridge in operable because the through-hole <NUM> will be open.

According to the above example embodiments the data storage unit <NUM> is provided on or within the housing / walls of the cartridge with an arrangement which prevents or at least hinders removal of the data storage unit from one cartridge to be replaced by another.

In one example the data storage unit may be printed on a surface of the cartridge or attached to the cartridge by printing. The data storage unit may be read wirelessly, for example, via RFID tags (passive or active) according to the embodiments explained below, when brought into close contact/proximity of a reader on the device. Printing the data storage unit <NUM> on the surface of the cartridge can have an effect that any attempts to remove the data storage unit <NUM> may likely damage the data storage unit itself thus preventing transfer of the data storage unit from one cartridge, which may be a genuine cartridge to a second cartridge for example a counterfeit cartridge.

In terms of electrical connections to the data storage unit for each of the above examples, the data storage unit <NUM> may be operated wirelessly or the data storage unit <NUM> may have physical electrical contacts that couple to the battery of a aerosol provision device for example. Whilst in some embodiments the data storage unit <NUM> may be completely embedded in the housing, in other embodiments, the housing/wall may have the data storage unit partially embedded. For example, the housing may define a recess for receiving a data storage unit. However one face of the data storage unit may be exposed. The tolerances between the edge of the recess and the edge of the data storage unit may be very small, for example, smaller than the tip of a screwdriver or the like (less than <NUM> micrometres), meaning the user is not able to remove or tamper with the data storage unit easily.

As explained in some examples below, the data storage unit may be provided via miniaturised RFID tags (referred to as RFID dust), which have a small size for example as small as <NUM> x <NUM>) and generally have a short transmission range. These RFID tags can be embedded in the material forming the cartridge (e.g., the plastic housing), or at any other location in the cartridge. Hence, it is not possible to isolate and remove the miniaturised RFID tags from the cartridge, again preventing the transfer of genuine tags to non-genuine consumables.

While the above described embodiments have in some respects focussed on some specific example aerosol provision systems, it will be appreciated the same principles can be applied for aerosol provision systems using other technologies. That is to say, the specific manner in which various aspects of the aerosol provision system function are not directly relevant to the principles underlying the examples described herein.

As illustrated by the example embodiments described above cartridges of e-cigarettes embodying the present technique can be configured with different shapes, although these are arranged to be compatible with the aerosol provision devices so that a reader of the devices can read data stored in the data storage unit.

According to the present disclosure, embodiments can provide an aerosol provision system for generating an aerosol for user inhalation which includes a cartridge comprising a housing containing an aerosolisable material, and an aerosol provision device. In some examples. the aerosol provision system can be described as "non-combustible", where a constituent aerosol-generating material of the aerosol provision system (or component thereof) is not combusted or burned in order to facilitate delivery of at least one substance to a user. In some embodiments, the non-combustible aerosol provision system may be a powered non-combustible aerosol provision system.

In some embodiments, the non-combustible aerosol provision system is an electronic cigarette, also known as a vaping device or electronic nicotine delivery system (END), although it is noted that the presence of nicotine in the aerosol-generating material is not a requirement.

In some embodiments, the non-combustible aerosol provision system is an aerosol-generating material heating system, also known as a heat-not-burn system. An example of such a system is a tobacco heating system.

In some embodiments, the non-combustible aerosol provision system is a hybrid system to generate aerosol using a combination of aerosol-generating materials, one or a plurality of which may be heated. Each of the aerosol-generating materials may be, for example, in the form of a solid, liquid or gel and may or may not contain nicotine. In some embodiments, the hybrid system comprises a liquid or gel aerosol-generating material and a solid aerosol-generating material. The solid aerosol-generating material may comprise, for example, tobacco or a non-tobacco product.

Typically, the non-combustible aerosol provision system may comprise a non-combustible aerosol provision device and a consumable (or cartridge) for use with the non-combustible aerosol provision device.

In some embodiments, the disclosure relates to consumables comprising aerosol-generating material and configured to be used with non-combustible aerosol provision devices. These consumables are sometimes referred to as articles throughout the disclosure.

In some embodiments, the non-combustible aerosol provision system, such as a non-combustible aerosol provision device thereof, may comprise a power source and a controller. The power source may, for example, be an electric power source or an exothermic power source. In some embodiments, the exothermic power source comprises a carbon substrate which may be energised so as to distribute power in the form of heat to an aerosol-generating material or to a heat transfer material in proximity to the exothermic power source.

In some embodiments, the non-combustible aerosol provision system may comprise an area for receiving the consumable, an aerosol generator, an aerosol generation area, a housing, a mouthpiece, a filter and/or an aerosol-modifying agent.

In some embodiments, the consumable (or cartridge) for use with the non-combustible aerosol provision device may comprise aerosol-generating material, an aerosol-generating material storage area, an aerosol-generating material transfer component, an aerosol generator, an aerosol generation area, a housing, a wrapper, a filter, a mouthpiece, and/or an aerosol-modifying agent.

Claim 1:
An aerosol provision system (<NUM>) for generating an aerosol for user inhalation, the system comprising
a cartridge (<NUM>) comprising a housing (<NUM>) containing an aerosolisable material, and
an aerosol provision device (<NUM>) having an interface (<NUM>) configured operatively to receive the cartridge and being configured in use to cause the aerosolisable material to generate the aerosol for user inhalation by energising the aerosol generating material,
wherein the cartridge includes a data storage unit (<NUM>) configured to store information relating to the cartridge, wherein the information relating to the cartridge is an identifier which identifies the cartridge and the data storage unit stores a digital representation of the identifier, the aerosol provision device being configured to detect the information stored in the data storage unit when the cartridge is received by the aerosol provision device, and wherein the data storage unit is integrally formed with one or more walls of the housing such that removal of the data storage unit renders one or both of the data storage unit and the cartridge inoperable.