Aerosol generating apparatus

Abstract

An aerosol generating apparatus comprising a consumable comprising an aerosol precursor, and first and second opposite ends that are longitudinally spaced from one another. The apparatus also comprises a device comprising a device body defining a cavity. The cavity has a base and an opening through which the second end of the consumable can be removably inserted into the cavity in a direction towards the base. The cavity is configured to permit rotation of the consumable about the longitudinal axis when the second end of the consumable is received in the cavity. The device further includes an engagement portion defining a recess at or proximate to the base of the cavity for receipt of the second end of the consumable, the engagement portion configured to engage the second end of the consumable when received in the recess to limit rotation of the consumable about the longitudinal axis. The device also includes a heating system arranged to heat the aerosol precursor when the consumable is received in the cavity.

Description

FIELD

[0001] The present disclosure relates to an aerosol generating apparatus.BACKGROUND

[0002] A typical aerosol generating apparatus may comprise a power supply, an aerosol generating unit that is driven by the power supply, an aerosol precursor, which in use is aerosolised by the aerosol generating unit to generate an aerosol, and a delivery system for delivery of the aerosol to a user.

[0003] In some aerosol generating apparatuses, in use, a consumable is inserted into a cavity of the device for heating. To achieve optimum performance it may, in some cases, be desirable to ensure that the consumable is suitably aligned within the cavity.

[0004] In spite of the effort already invested in the development of aerosol generating apparatuses / systems further improvements are desirable.SUMMARY

[0005] In a first aspect the present disclosure provides an aerosol generating apparatus comprising a consumable comprising an aerosol precursor, and first and second opposite ends that are longitudinally spaced from one another along a longitudinal axis. The aerosol generating apparatus also comprises a device comprising a device body defining a cavity, the cavity having a base and an opening through which the second end of the consumable can be removably inserted into the cavity in a direction towards the base. The device also includes a heating system arranged to heat the aerosol precursor when the consumable is received in the cavity.

[0006] In some examples, the consumable may be configured to permit rotation of the consumable about the longitudinal axis when the second end of the consumable is received in the cavity.

[0007] The device of the aerosol generating apparatus may comprise an engagement portion defining a recess at or proximate to the base of the cavity. The engagement portion may be configured to engage the second end of the consumable when received in the recess to limit rotation of the consumable about the longitudinal axis.

[0008] In this way, the consumable may be rotatable (about the longitudinal axis) in the cavity until the second end of the consumable is engaged with the engagement portion (i.e. by movement of the second end towards the base).

[0009] Providing an engagement portion that limits rotation of the consumable can help to ensure suitable rotational alignment of the consumable when received in the aerosol-generating apparatus (and, likewise, can ensure that such alignment is maintained in use). For example, such an arrangement may ensure that features of the consumable are aligned correctly with features of the aerosol generating apparatus (such as the heating system).

[0010] Furthermore, locating the engagement portion at the base of the cavity can help ensure that the consumable is fully inserted into cavity by a user (i.e. can facilitate longitudinal alignment of the consumable in the cavity).

[0011] When not engaged with the engagement portion, the second end of the consumable may rotate. On the other hand, when the second end is engaged with the engagement portion, rotation of the second end is limited. Accordingly, a user is able to determine whether the second end is engaged by attempting to rotate the consumable. That the engagement portion is at the base of the cavity means that the second end will only be engaged (i.e. rotation will only be limited) when the consumable is substantially fully inserted in the cavity. So, by attempting to rotate the consumable a user can determine whether the consumable has been substantially fully inserted into the cavity.

[0012] The cavity may comprise a first section, which may be at least partly defined by the engagement portion and in which rotation of the second end of the consumable may be limited (i.e. by engagement with the engagement portion). Likewise, the cavity may comprise a second section extending from the first section to the opening. The second end of the consumable may be able to rotate when received in the second section (and therefore the entire consumable may be able to rotate). That is, in the second section the cavity may be configured (e.g. shaped and / or sized) such that the second end of the consumable (and thus e.g. the consumable as a whole) is able to rotate.

[0013] The second section may extend longitudinally for at least 70% of the length of the cavity (or for at least 80% of the length of the cavity, or for at least 90% of the length of the cavity).

[0014] In other words, the depth of the recess (e.g. taken in the longitudinal direction) may be less than 30% of the length of the cavity (e.g. taken in the longitudinal direction). The depth of the recess may less than 20% or less than 30% of the length of the cavity.

[0015] The length of the cavity may be taken as the distance between the base of the cavity and the opening.

[0016] In this way, as a consumable is inserted into the cavity it may be able to be rotated by a user (e.g. with minimal resistance to such rotation). Once the second end of the consumable reaches the first section of the cavity, rotation of the consumable may be limited. Thus, the user will be able to determine (by way of the resistance to rotation) that the second end of the consumable is at or close to the base of the cavity.

[0017] The recess defined by the engagement portion may have a non-circular transverse cross-sectional shape. The recess may have, for example, an elliptical, triangular, rectangular (e.g. square), star-shaped, D-shaped, etc. cross-sectional shape.

[0018] A surface of the engagement portion extending around, so as to define, the recess (e.g. an inwardly facing surface of the engagement portion) may comprise a non-circular transverse cross-sectional shape.

[0019] The second end of the consumable may have an outer peripheral surface of non-circular transverse cross-sectional shape. The outer peripheral surface of the second end may have, for example, have an elliptical, triangular, rectangular (e.g. square), star-shaped, etc. cross-sectional shape. For the avoidance of doubt, the outer peripheral surface is an external surface of the consumable.

[0020] The outer peripheral surface may have a cross-sectional shape that is complementary to the cross-sectional shape of the recess. In this way, the second end of the consumable may fit snugly within the recess.

[0021] The recess (defined by the engagement portion) and the second end of the consumable may be shaped such that the second end of the consumable is receivable in the recess in one or more discrete rotational positions (i.e. with respect to the longitudinal axis). In this way, the engagement portion may function as a gate, allowing passage of the second end of the consumable into the recess only if oriented in the one or more discrete rotational positions.

[0022] The recess and the second end of the consumable may be shaped such that the second end of the consumable is receivable in the recess in only one (i.e. a single) rotational position. The recess and / or the second end of the consumable may, for example, have a cross-sectional shape that does not have any rotational symmetry (about the longitudinal axis).

[0023] The recess and the second end of the consumable may be shaped such that the second end of the consumable is receivable in the recess in a plurality of discrete rotational positions. The recess and / or the second end of the consumable may, for example, have a cross-sectional shape that has a discrete rotational symmetry of nth order, where n is greater than 1.

[0024] In some embodiments, the recess and the second end of the consumable may be shaped such that the second end of the consumable is receivable in the recess in e.g. more than three, or more than four, or more than eight rotational positions. It may be desirable for the second end to be receivable in a greater number of rotational positions so that a user can more easily find a rotational position in which the consumable can be fully inserted.

[0025] An outer surface of the consumable (e.g. proximate the first end of the consumable) may comprise indicia configured to aid in rotationally aligning the consumable with the engagement portion. For example, the indicia may indicate a desired rotational positioning of the consumable (e.g. may be configured to align with a feature of the device to indicate such positioning).

[0026] In some embodiment an outer surface of the consumable may comprise indicia configured to indicate whether the consumable has been fully inserted into the cavity. For example, the indicia may be arranged so as to only be visible when the consumable is not fully inserted into the cavity (i.e. may be obstructed from view, in the cavity, when the consumable is fully inserted).

[0027] One of the outer peripheral surface and an inwardly facing surface of the engagement portion may comprise one or more channels and the other of the outer peripheral surface and inwardly facing surface may comprise one or more projections. The projections may be arranged for receipt in the channels.

[0028] Providing such features on the outer peripheral surface may aid in limiting rotation (because the force required to restrict such rotation may be reduced at the outer periphery).

[0029] Each channel and / or projection may be longitudinally extending. The channels or projections arranged on the outer peripheral surface of the second end of the consumable may extend to an end surface of the consumable (i.e. at the second end).

[0030] The channels and / or projections may be (e.g. evenly) spaced in a circumferential direction around the outer peripheral surface or inwardly facing surface. This may provide an even distribution of force when resisting rotation of the consumable.

[0031] The channels and / or projections may vary in shape and / or size. That is, the outer peripheral surface may comprise a plurality of channels or projections, which may differ in shape and / or size.

[0032] Each projection and / or channel may have an axial length (taken in the longitudinal direction) of less than e.g. 15 mm, or e.g. less than 10 mm, or e.g. less than 5 mm.

[0033] In some embodiments, the consumable may comprise a bore extending into the second end of the consumable. The bore may be of non-circular cross-sectional shape.

[0034] The engagement portion may comprise a protrusion that extends from the base of the cavity for engagement in the bore. The protrusion may be of non-circular cross-sectional shape. The protrusion may at least partly define the recess of the engagement portion (the recess may extend around the protrusion). The protrusion may have a cross-sectional shape that is complementary to the cross-sectional shape of the bore.

[0035] Engagement between the protrusion and the bore may limit rotation of the consumable about the longitudinal axis.

[0036] The protrusion and / or bore may have a cross-sectional shape that is e.g. elliptical, triangular, rectangular (e.g. square), star-shaped, D-shaped, etc.

[0037] The protrusion and / or bore may have an axial length (taken in the longitudinal direction) of less than e.g. 15 mm, or e.g. less than 10 mm, or e.g. less than 5 mm.

[0038] In some embodiments, an end surface of the second end of the consumable may be configured to engage with the engagement portion to limit rotation of the consumable about the longitudinal axis.

[0039] In some embodiments, the end surface may be non-planar and / or obliquely oriented with respect to the longitudinal axis.

[0040] For example, the end surface of the consumable may comprise a plurality of longitudinally projecting teeth (i.e. the end surface may be non-planar due to the presence of the teeth). The base of the cavity may comprise a plurality of teeth-receiving recesses for receipt of the teeth.

[0041] The teeth may be distributed around a periphery of the end surface. The teeth may be evenly distributed in a circumferential direction. In one example, the second end of the consumable may have a castellated shape.

[0042] Each tooth may be tapered in a direction of extension of the tooth from the end surface of the second end of the consumable.

[0043] Likewise, the teeth-receiving recesses may be distributed around a periphery of the base of the cavity (and may be evenly distributed in a circumferential direction).

[0044] As may be appreciated, when the end surface is obliquely oriented, the base of the cavity may also be obliquely oriented (i.e. sloped). In this way, engagement between the end surface of the second end and the base of the cavity may restrict rotation of the consumable about the longitudinal axis.

[0045] In some embodiments, the engagement portion may be configured to guide the second end of the consumable into the recess (defined by the engagement portion). The engagement portion may be configured for threaded engagement with the second end of the consumable. Thus, the engagement portion and / or second end of the consumable may comprise a thread and / or groove for guiding the second end into the recess. The thread and / or groove may extend obliquely with respect to the longitudinal axis of the consumable (e.g. may be helical).

[0046] A thread or groove may be provided, for example, on the outer peripheral surface of the second end and / or within the bore (when present) in the second end of the consumable. Alternatively or additionally, a thread or groove may be provided, for example, on an inwardly facing surface of the engagement portion and / or on the protrusion (when present) of the engagement portion.

[0047] In such embodiments, in use, rotation of the consumable about the longitudinal axis may cause the second end of the consumable to move into the recess of the engagement portion (e.g. guided by the thread / groove).

[0048] In such embodiments, rotation of the second end of the consumable may be limited (in one direction) once the second end of the consumable is fully received in the recess of the engagement portion. Of course, to disengage the consumable from the engagement portion, the consumable may be rotated in the opposite direction.

[0049] The engagement portion may be an integral part of the device body (e.g. may be integrally formed with one or more walls of the device body defining the cavity). In other embodiments, the engagement portion may be a separate component inserted into the cavity.

[0050] In some embodiments, the second end of the consumable may be at least partly defined by a filter (e.g. an upstream filter of the consumable). The filter may be formed of a porous material. The filter may be formed of a fibrous material. The filter may comprise, for example, cellulose acetate. At least the peripheral surface of the filter may be hardened. For example, the filter may be hardened by curing a plasticiser contained within the filter.

[0051] The consumable may comprise a wrapper that circumscribes the filter. The wrapper may at least partly define the second end of the consumable. For example, when present, the wrapper may define the outer peripheral surface of the second end of the consumable.

[0052] The wrapper may connect the filter to the substrate. The wrapper may comprise a plurality of layers. The wrapper may be formed of a cellulosic material (e.g. paper).

[0053] An outer cross-sectional shape of the consumable, except for at the second end, may be substantially circular. Thus, the consumable may comprise a first section of circular cross-sectional shape and a second section at the second end of non-circular cross-sectional shape. The second section may extend for less than 30% of the length of the consumable, or e.g. less than 20% of the length, or e.g. less than 10% of the length.

[0054] The substrate may be substantially cylindrical. The substrate may be a solid substrate. The substrate may comprise tobacco (e.g. may comprise a reconstituted tobacco). The consumable may be heat-not-burn consumable. The may be a heat-not-burn device (i.e. a device for heating a heat-not-burn consumable).

[0055] The first end of the consumable may be a mouth end of the consumable (i.e. the end of the consumable that is received in or close to the mouth of a user in normal use). The consumable may comprise a mouthpiece filter at or proximate to the first end.

[0056] The heater may be elongate. The heater may be configured for penetration into the consumable when received in the cavity (e.g. may be a rod or blade shaped heater). Alternatively, the heater may be arranged to at least partly surround the consumable when received in the cavity (e.g. may be a tubular shaped heater). The heater may extend longitudinally.

[0057] In embodiments in which the heater is configured for penetration into the consumable, and in which the engagement portion comprises a protrusion (for receipt in the bore of the consumable), the engagement portion may be a heater support (e.g. at a base of the heater). Thus, the heater may extend from the protrusion.

[0058] The device may comprise a consumable detection sensor that is arranged to detect the presence of the second end of the consumable in the recess defined by the engagement portion. The sensor may be a contact sensor (e.g. configured to contact of the consumable therewith), a proximity sensor, an optical sensor, etc.

[0059] The device may comprise electrical circuitry (e.g. a controller) operatively connected to the sensor. The controller may be configured to operate the device in response to detection (or non-detection) of the second end of the consumable in the recess.

[0060] The controller may be operatively connected to the heater. The controller may be configured to control the heating system in response to detection of the second end of the consumable in the recess of the engagement portion. For example, the controller may be configured to activate the heating system (e.g. by controlling a flow of power to the heater from a power source) in response to detection of the second end of the consumable in the recess. In this way, the heating system may be automatically activated by the device upon full insertion of the consumable into the cavity.

[0061] The controller may be configured to prevent activation of (or to not activate) the heating system in response to the sensor not detecting the presence of the second end of the consumable in the recess. That is, when the sensor does not detect the second end in the recess, the controller may be configured to prevent the heating system from activating. In this way, the heating system may be prevented from activating when the consumable is not fully inserted in the cavity. Similarly, the heater may be prevented from activating when a non-authorised consumable (e.g. a consumable that is not suited for use with the device and thus not including a second end receivable in the recess) is received in the cavity.

[0062] The present disclosure may provide a use of the apparatus of the first aspect. The use may comprise inserting the consumable into the cavity, rotating the consumable such that the second end is aligned with the recess of the engagement portion for receipt in the engagement portion, and subsequently further inserting the consumable such that the second end of the consumable is received in the recess.

[0063] In a second aspect there is provided an aerosol generating consumable for receipt in the cavity of a device. The consumable comprises first and second opposite ends spaced apart along a longitudinal axis. The second end is configured for insertion into the cavity of the device. The consumable also comprises an aerosol precursor and a filter provided at the second end.

[0064] In some examples, an end surface and / or an outer peripheral surface of the filter may be configured for engagement with the device, in use, when the second end is fully inserted into the cavity of the device, such engagement limiting rotation of the consumable about a longitudinal axis of the consumable.

[0065] The consumable of the second aspect may include one or more features of the consumable described above with respect to the first aspect. For example, the filter of the second aspect may comprise the channels / projections, bore, and / or axial projection(s) of the first aspect.

[0066] In a third aspect there is provided an aerosol generating apparatus comprising a consumable of the second aspect, and a device defining a cavity for insertion of the second end of the consumable (e.g. towards a base of the cavity), and a heating system arranged to heat the aerosol precursor of the consumable when received in the cavity.

[0067] In some examples, the filter of the consumable may be configured for engagement with an engagement portion defined by a wall of the cavity of the device, in use, when the second end of the consumable is substantially fully inserted therein, such engagement limiting rotation of the consumable about a longitudinal axis of the consumable.

[0068] The aerosol generating apparatus of the third aspect may include one or more features of the aerosol generating apparatus of the first aspect. For example, the engagement portion of the third aspect may include one or more features of the engagement portion of the first aspect.

[0069] The preceding summary is provided for purposes of summarizing some examples to provide a basic understanding of aspects of the subject matter described herein. Accordingly, the above-described features should not be construed to narrow the scope or spirit of the subject matter described herein in any way. Moreover, the above and / or proceeding examples may be combined in any suitable combination to provide further examples, except where such a combination is clearly impermissible or expressly avoided. Other features, aspects, and advantages of the subject matter described herein will become apparent from the following text and the accompanying drawings.BRIEF DESCRIPTION OF THE FIGURES

[0070] Aspects, features and advantages of the present disclosure will become apparent from the following description of examples in reference to the appended drawings in which like numerals denote like elements. Fig. 1 is a block system diagram showing an example aerosol generating apparatus. Fig. 2 is a block system diagram showing an example implementation of the apparatus of Fig. 1, where the aerosol generating apparatus is configured to generate aerosol from a solid precursor. Fig. 3 is a schematic diagram showing an example implementation of the apparatus of Fig. 2. Fig. 4 is a side section view of the example implementation of Fig. 3. Fig. 5A is a side section view of a second example apparatus. Fig. 5B is a top section view of the second example apparatus. Fig. 5C is a perspective view of a consumable of the second example apparatus. Fig. 6A is a side section view of a third example apparatus. Fig. 6B is a perspective view of a consumable of the third example apparatus. Figs. 7A and 7B are respective end and side views of a consumable of a fourth example apparatus. Fig. 8 is a schematic section view of a fifth example apparatus. Fig. 9 is a side view of a consumable of a sixth example apparatus. DETAILED DESCRIPTION OF EMBODIMENTS

[0071] Before describing several examples implementing the present disclosure, it is to be understood that the present disclosure is not limited by specific construction details or process steps set forth in the following description and accompanying drawings. Rather, it will be apparent to those skilled in the art having the benefit of the present disclosure that the systems, apparatuses and / or methods described herein could be embodied differently and / or be practiced or carried out in various alternative ways.

[0072] Unless otherwise defined herein, scientific and technical terms used in connection with the presently disclosed inventive concept(s) shall have the meanings that are commonly understood by those of ordinary skill in the art, and known techniques and procedures may be performed according to conventional methods well known in the art and as described in various general and more specific references that may be cited and discussed in the present specification.

[0073] Any patents, published patent applications, and non-patent publications mentioned in the specification are hereby incorporated by reference in their entirety.

[0074] All examples implementing the present disclosure can be made and executed without undue experimentation in light of the present disclosure. While particular examples have been described, it will be apparent to those of skill in the art that variations may be applied to the systems, apparatus, and / or methods and in the steps or in the sequence of steps of the methods described herein without departing from the concept, spirit, and scope of the inventive concept(s). All such similar substitutions and modifications apparent to those skilled in the art are deemed to be within the spirit, scope, and concept of the inventive concept(s) as defined by the appended claims.

[0075] The use of the term "a" or "an" in the claims and / or the specification may mean "one," as well as "one or more," "at least one," and "one or more than one." As such, the terms "a," "an," and "the," as well as all singular terms, include plural referents unless the context clearly indicates otherwise. Likewise, plural terms shall include the singular unless otherwise required by context.

[0076] The use of the term "or" in the present disclosure (including the claims) is used to mean an inclusive "and / or" unless explicitly indicated to refer to alternatives only or unless the alternatives are mutually exclusive. For example, a condition "A or B" is satisfied by any of the following: A is true (or present) and B is false (or not present), A is false (or not present) and B is true (or present), and both A and B are true (or present).

[0077] As used in this specification and claim(s), the words "comprising, "having," "including," or "containing" (and any forms thereof, such as "comprise" and "comprises," "have" and "has," "includes" and "include," or "contains" and "contain," respectively) are inclusive or open-ended and do not exclude additional, unrecited elements or method steps.

[0078] Unless otherwise explicitly stated as incompatible, or the physics or otherwise of the embodiments, examples, or claims prevent such a combination, the features of examples disclosed herein, and of the claims, may be integrated together in any suitable arrangement, especially ones where there is a beneficial effect in doing so. This is not limited to only any specified benefit, and instead may arise from an "ex post facto" benefit. This is to say that the combination of features is not limited by the described forms, particularly the form (e.g. numbering) of example(s), embodiment(s), or dependency of claim(s). Moreover, this also applies to the phrase "in one embodiment," "according to an embodiment," and the like, which are merely a stylistic form of wording and are not to be construed as limiting the following features to a separate embodiment to all other instances of the same or similar wording. This is to say, a reference to 'an,' 'one,' or 'some' embodiment(s) may be a reference to any one or more, and / or all embodiments, or combination(s) thereof, disclosed. Also, similarly, the reference to "the" embodiment may not be limited to the immediately preceding embodiment. Further, all references to one or more embodiments or examples are to be construed as non-limiting to the claims.

[0079] The present disclosure may be better understood in view of the following explanations, wherein the terms used that are separated by "or" may be used interchangeably:

[0080] As used herein, an "aerosol generating apparatus" (or "electronic(e)-cigarette" ) may be an apparatus configured to deliver an aerosol to a user for inhalation by the user. The apparatus may additionally / alternatively be referred to as a "smoking substitute apparatus", if it is intended to be used instead of a conventional combustible smoking article. As used herein a combustible "smoking article" may refer to a cigarette, cigar, pipe or other article, that produces smoke (an aerosol comprising solid particulates and gas) via heating above the thermal decomposition temperature (typically by combustion and / or pyrolysis). An aerosol generated by the apparatus may comprise an aerosol with particle sizes of 0.2 - 7 microns, or less than 10 microns, or less than 7 microns. This particle size may be achieved by control of one or more of: heater temperature; cooling rate as the vapour condenses to an aerosol; flow properties including turbulence and velocity. The generation of aerosol by the aerosol generating apparatus may be controlled by an input device. The input device may be configured to be user-activated, and may for example include or take the form of an actuator (e.g. actuation button) and / or an airflow sensor.

[0081] Each occurrence of the aerosol generating apparatus being caused to generate aerosol for a period of time (which may be variable) may be referred to as an "activation" of the aerosol generating apparatus. The aerosol generating apparatus may be arranged to allow an amount of aerosol delivered to a user to be varied per activation (as opposed to delivering a fixed dose of aerosol), e.g. by activating an aerosol generating unit of the apparatus for a variable amount of time, e.g. based on the strength / duration of a draw of a user through a flow path of the apparatus (to replicate an effect of smoking a conventional combustible smoking article).

[0082] The aerosol generating apparatus may be portable. As used herein, the term "portable" may refer to the apparatus being for use when held by a user.

[0083] As used herein, an "aerosol" may include a suspension of precursor, including as one or more of: solid particles; liquid droplets; gas. Said suspension may be in a gas including air. An aerosol herein may generally refer to / include a vapour. An aerosol may include one or more components of the precursor.

[0084] As used herein, a "precursor" may include one or more of a: liquid; solid; gel; loose leaf material; other substance. The precursor may be processed by an aerosol generating unit of an aerosol generating apparatus to generate an aerosol. The precursor may include one or more of: an active component; a carrier; a flavouring. The active component may include one or more of nicotine; caffeine; a cannabidiol oil; a non-pharmaceutical formulation, e.g. a formulation which is not for treatment of a disease or physiological malfunction of the human body. The active component may be carried by the carrier, which may be a liquid, including propylene glycol and / or glycerine. The term "flavouring" may refer to a component that provides a taste and / or a smell to the user. The flavouring may include one or more of: Ethylvanillin (vanilla); menthol, Isoamyl acetate (banana oil); or other. The precursor may include a substrate, e.g. reconstituted tobacco to carry one or more of the active component; a carrier; a flavouring.

[0085] As used herein, a "storage portion" may be a portion of the apparatus adapted to store the precursor. It may be implemented as a carrier for solid material.

[0086] As used herein, a "flow path" may refer to a path or enclosed passageway through an aerosol generating apparatus, e.g. for delivery of an aerosol to a user. The flow path may be arranged to receive aerosol from an aerosol generating unit. When referring to the flow path, upstream and downstream may be defined in respect of a direction of flow in the flow path, e.g. with an outlet being downstream of an inlet.

[0087] As used herein, a "delivery system" may be a system operative to deliver an aerosol to a user. The delivery system may include a mouthpiece and a flow path.

[0088] As used herein, a "flow" may refer to a flow in a flow path. A flow may include aerosol generated from the precursor. The flow may include air, which may be induced into the flow path via a puff by a user.

[0089] As used herein, a "puff" (or "inhale" or "draw") by a user may refer to expansion of lungs and / or oral cavity of a user to create a pressure reduction that induces flow through the flow path.

[0090] As used herein, an "aerosol generating unit" may refer to a device configured to generate an aerosol from a precursor. The aerosol generating unit may include a unit to generate a vapour directly from the precursor (e.g. a heating system or other system) or an aerosol directly from the precursor (e.g. an atomiser including an ultrasonic system, a flow expansion system operative to carry droplets of the precursor in the flow without using electrical energy or other system). A plurality of aerosol generating units to generate a plurality of aerosols (for example, from a plurality of different aerosol precursors) may be present in an aerosol generating apparatus.

[0091] As used herein, a "heating system" may refer to an arrangement of at least one heating element, which is operable to aerosolise a precursor once heated. The at least one heating element may be electrically resistive to produce heat from the flow of electrical current therethrough. The at least one heating element may be arranged as a susceptor to produce heat when penetrated by an alternating magnetic field. The heating system may be configured to heat a precursor to below 300 or 350 degrees C, including without combustion.

[0092] As used herein, a "consumable" may refer to a unit that includes a precursor. The consumable may include a mouthpiece. The consumable may include an information carrying medium. With solid material implementations of the precursor, e.g. tobacco or reconstituted tobacco formulation, the consumable may be referred to as a "stick" or "package" or "heat-not-burn consumable". In a heat-not-burn consumable, the mouthpiece may be implemented as a filter and the consumable may be arranged to carry the precursor. The consumable may be implemented as a dosage or pre-portioned amount of material, including a loose-leaf product.

[0093] As used herein, an "information carrying medium" may include one or more arrangements for storage of information on any suitable medium. Examples include: a computer readable medium; a Radio Frequency Identification (RFID) transponder; codes encoding information, such as optical (e.g. a bar code or QR code) or mechanically read codes (e.g. a configuration of the absence or presents of cut-outs to encode a bit, through which pins or a reader may be inserted).

[0094] As used herein "heat-not-burn" (or "HNB" or "heated precursor") may refer to the heating of a precursor, typically tobacco, without combustion, or without substantial combustion (i.e. localised combustion may be experienced of limited portions of the precursor, including of less than 5% of the total volume).

[0095] Referring to Figure 1, an example aerosol generating apparatus 1 includes a power supply 2, for supply of electrical energy. The apparatus 1 includes an aerosol generating unit 4 that is driven by the power supply 2. The power supply 2 may include an electric power supply in the form of a battery and / or an electrical connection to an external power source. The apparatus 1 includes a precursor 6, which in use is aerosolised by the aerosol generating unit 4 to generate an aerosol. The apparatus 1 includes a delivery system 8 for delivery of the aerosol to a user.

[0096] Electrical circuitry (not shown in Figure 1) may be implemented to control the interoperability of the power supply 4 and aerosol generating unit 6.

[0097] Figure 2 shows an implementation of the apparatus 1 of Figure 1, where the aerosol generating apparatus 1 is configured to generate aerosol by a-heat not-burn process.

[0098] In this example, the apparatus 1 includes a device 50 (including a device body 59) and a consumable 70.

[0099] In this example, the device 50 includes the power supply 4 and a heating system 52. The heating system 52 includes at least one heating element 54. The device 50 may additionally include any one or more of electrical circuitry 56, a memory 58, a wireless interface 60, and one or more other components 62.

[0100] The electrical circuitry 56 may include a processing resource for controlling one or more operations of the device 50, e.g. based on instructions stored in the memory 58.

[0101] The wireless interface 60 may be configured to communicate wirelessly with an external (e.g. mobile) device, e.g. via Bluetooth.

[0102] The other component(s) 62 may include an actuator, one or more user interface devices configured to convey information to a user and / or a charging port, for example.

[0103] The device 50 is configured to engage with the consumable 70 such that the at least one heating element 54 of the heating system 52 penetrates into, or at least partly surrounds, the solid precursor 6 of the consumable. In use, a user may activate the aerosol generating apparatus 1 to cause the heating system 52 of the device 50 to cause the at least one heating element 54 to heat the solid precursor 6 of the consumable (without combusting it) by conductive heat transfer, to generate an aerosol which is inhaled by the user.

[0104] Figure 3 shows an example implementation of the aerosol generating apparatus 1 of Figure 4.

[0105] As depicted in Figure 3, the consumable 70 is implemented as a stick, which is engaged with the device 50 by inserting the stick into an opening 123 at a top end 53 of the device body 59, which causes the at least one heating element 54 of the heating system 52 to penetrate into the solid precursor 6.

[0106] In this example, the at least one heating element 54 is a rod-shaped element with a circular transverse profile. Other heating element shapes are possible, e.g. the at least one heating element 54 may be blade-shaped (with a rectangular transverse profile) or tube-shaped (e.g. with a hollow transverse profile).

[0107] In this example, the device 50 includes a cap 51. In use the cap 51 is engaged at a top end 53 of the device body 59. Although not apparent from Figure 5, the cap 51 is moveable relative to the device body 59. In particular, the cap 51 is slidable and can slide along a longitudinal axis of the device body 59.

[0108] The device 50 also includes an actuator 55 on an outer surface of the device body 59. In this example, the actuator 55 has the form of a button.

[0109] The device 50 also includes a user interface device configured to convey information to a user. Here, the user interface device is implemented as a plurality of lights 57, which may e.g. be configured to illuminate when the apparatus 1 is activated and / or to indicate a charging state of the power supply 4. Other user interface devices are possible, e.g. to convey information haptically or audibly to a user.

[0110] The device 50 may also include an airflow sensor which detects airflow in the aerosol generating apparatus 1 (e.g. caused by a user inhaling through the consumable 70). This may be used to count puffs, for example.

[0111] In this example, the consumable 70 includes a flow path which transmits aerosol generated by the at least one heating element 54 to the mouthpiece of the consumable.

[0112] In this example, the aerosol generating unit 4 is provided by the above-described heating system 52 and the delivery system 8 is provided by the above-described flow path and mouthpiece of the consumable 70.

[0113] The consumable 70 is shown in more detail in Figure 4. The consumable 70 includes the solid precursor 6, which in this embodiment comprises a solid smokable substrate 102 containing the precursor 6. The substrate 102 is proximal to the device body 59 in use, and a mouthpiece filter 101 of the consumable 70 is distal to the device body 50 in use. The mouthpiece filter 101 is at a first end 107 of the consumable 70 and serves as the mouthpiece of the consumable 70 (and thus the apparatus 1 as a whole). The smokable substrate 102 may be a reconstituted tobacco formulation.

[0114] The consumable 70 further includes a tubular hollow bore filter 103 immediately downstream of the substrate 102 and a chamber 104 immediately downstream of the hollow bore filter 103 (so as to be between the hollow bore filter 103 and the mouthpiece filter 101). An upstream filter 105 is provided at a second end 106 of the consumable 70 (which is opposite to, and longitudinally spaced from, the first end 107 of the consumable 70). The various internal components of the consumable 70 are combined within a paper wrapper 109, which extends circumferentially about the components of the consumable 70.

[0115] As should be apparent from the figure, the second end 106 of the consumable 70 is inserted into a cavity 114 defined by the device body 59, through an upper opening 123 of the cavity 114. As will be described further below, the second end 106 of the consumable 70 engages with an engagement portion 113 of the device 50 when the consumable 70 is fully inserted into the cavity 114 so as to restrict rotation of the consumable 70 about a longitudinal axis 108 of the consumable 70.

[0116] Thus, the cavity 114 can be nominally divided into a first section 124 defined by the engagement portion 113 and a second section 125 that extends from the first section 124 to the opening 123. When the second end 106 of the consumable 70 is located in the first section 124, the second end 106 engages with the engagement portion 113 to limit rotation of the consumable 70 about the longitudinal axis 108. On the other hand, when the second end 106 of the consumable 70 is located in the second section 125 it is able to rotate (such that the consumable 70 is also able to rotate). In this way, a user is able to determine the location of the second end 106 of the consumable 70 within the cavity 114.

[0117] Figures 5A, 5B and 5C illustrates a further example of the consumable 70a for use with a device 50a. In this example, the upstream filter 105 defines the second end 106 of the consumable 70a.

[0118] As can be seen in Figure 5C, in particular, the upstream filter 105 includes an outer peripheral surface 110 that has a non-circular transverse cross-sectional shape. In particular, the outer peripheral surface 110 includes a plurality of longitudinally extending channels 111. Each channel 111 extends to an end surface 112 of the upstream filter 105. The channels 111 each have a semi-circular cross-sectional shape and are equally spaced from one another in a circumferential direction around the periphery of the upstream filter 105. A portion of the upstream filter 105 extends axially beyond an end of the wrapper 109 such that the channels 111 are externally exposed (so as to form an external part of the consumable 70a).

[0119] The device 50a includes an engagement portion 113 that is located at a base 117 of the cavity 114 (although illustrated as a separate portion, the engagement portion 113 may otherwise be integral with the walls of the device 50 that define the cavity 114). As is most apparent from Figure 5B, the engagement portion 113 defines a recess 115 that is complementary in shape to the second end 106 of the consumable 70a (in particular, the upstream filter 105). Thus, an inwardly facing surface 122 of the engagement portion 113 includes a plurality of longitudinally extending projections 116 that are spaced from one another in the circumferential direction (i.e. about the longitudinal axis). As may be appreciated from the figures, the projections 116 are configured for receipt in the channels 111 of the upstream filter 105 of the consumable 70a when the second end 106 of the consumable 70a is inserted into the recess 115 defined by the engagement portion 113. Such receipt of the projections 116 in the channels 111 provides engagement between the engagement portion 113 and the second end 106 of the consumable 70a so as to restrict rotation of the consumable 70a about the longitudinal axis.

[0120] Accordingly, in use, a user can insert the consumable 70a into the cavity 114 of the device 50 in a longitudinal direction (i.e. along the longitudinal axis). If the channels 111 of the consumable 70a are misaligned with the projections 116 of the engagement portion 113 (due to the rotational position of the consumable 70a), then the consumable 70a will not be able to be fully inserted into the cavity 114. Instead, the end surface 112 of the upstream filter 105 will abut against an upper surface 118 of the engagement portion 113 so as to be prevented from being moved further towards the base 117 of the cavity 114.

[0121] In such circumstances a user must rotate the consumable 70a about the longitudinal axis in order to bring the channels 111 of the consumable 70a into alignment with the projections 116 of the engagement portion 113. As may be appreciated, because the upstream filter 105 includes a total of eight channels 111, there are eight rotational positions of the consumable 70a which will achieve such alignment. When aligned, the consumable 70a can then be moved further into the cavity 114 such that the second end 106 of the consumable 70a is received in the recess 115 defined by the engagement portion 113.

[0122] Once received in the recess 115 in this way, the consumable 70a will be restricted against rotation about the longitudinal axis (i.e. by positive engagement between the outer peripheral surface 110 of the upstream filter 105 and the inwardly facing surface 122 of the engagement portion 113). This indicates to a user that the consumable 70a is fully received within the cavity 114 of the device 50, thus ensuring correct alignment between the components of the consumable 70a and the rod-shaped heating element 54 (shown in dashed lines for clarity) of the device 50.

[0123] The device 50a further includes a consumable detection sensor 127 (which in this case is a contact sensor) that is configured to detect the presence of the second end 106 of the consumable 70a in the recess 115 of the engagement portion 113. The sensor 127 is operatively connected to electrical circuitry (not shown) of the device 50a that is configured to control the device 50a. In particular, the electrical circuitry is configured to control activation of the heating element 54, by only permitting such activation when the second end of the 106 of the consumable 70a is detected (by the sensor 127) in the recess 115.

[0124] Figures 6A and 6B illustrate a further example of a consumable 70b and corresponding device 50b. As is most apparent from Figure 7B, the second end 106 of the consumable 70b is partly defined by an upstream filter 105 having a bore 119 formed therein. In particular, the bore 119 extends into an end surface 112 of the upstream filter 105 and has a triangular cross-sectional shape (taken perpendicular to the longitudinal axis of the consumable 70b).

[0125] The device 50b includes an engagement portion 113 at the base 117 of the cavity 114 comprising a projection 120 of triangular cross-sectional shape extending longitudinally (upwards from the base 117) into the cavity 114. The projection 120 is complementary in shape to the bore 119 of the upstream filter 105, such that it is able to be received in the bore 119.

[0126] When the consumable 70b is inserted into the cavity 114 of the device 50b, if the orientation of the consumable 70b (about the longitudinal axis) is such that the bore 119 is misaligned with the projection 120, then the consumable 70b is prevented from being fully inserted into the cavity 114. In such circumstances, the end surface 112 of the consumable 70b abuts against an upper surface 118 of the projection 120 (to prevent further movement of the consumable 70b along the cavity 114).

[0127] Thus, as described above, a user must rotate the consumable 70b so as to align the bore 119 with the projection 120. Upon such alignment, the projection 120 will be received in the bore 119 and the consumable 70b will be fully received in the cavity 114 (in the present example, this is when the end surface 112 of the consumable 70b abut against the base 117 of the cavity 114).

[0128] When the projection 120 is received in the bore 119, positive engagement between the projection 120 and the walls of the bore 119 restrict rotation of the consumable 70b about the longitudinal axis. Thus, again, a user is able to determine that the consumable 70b is fully inserted simply by attempting to rotate the consumable 70b.

[0129] As may be appreciated, the second end of the consumable (and the engagement portion of the device body) of the apparatus may take various other shapes. A further example of the consumable 70c is shown in Figures 7A and 7B. In this example, the second end 106 of the consumable 70c is non-planar, in that it includes axial projections in the form of teeth 121. Each tooth 121 extends from an end surface 112 of the second end 106 of the consumable 70c (provided by an upstream filter 105). The teeth 121 are arranged in a circular array on the end surface 112 and are circumferentially spaced such that the second end 106 of the consumable 70c has a castellated shape. As should be appreciated, a corresponding device (not shown) can include a complementary array of recesses for receipt of the teeth 121 (to limit rotation of the consumable 70c when the second end 106 is received therein).

[0130] Figure 8 illustrates a further example of a consumable 70d (and corresponding device 50d). In this example, the consumable 70d includes an end surface 112 that is oriented so as to be oblique with respect to the longitudinal axis 108 of the consumable 70d. The engagement portion 113 includes a complementary oblique surface 117 (which defined a base of the cavity 114). When the consumable 70d is fully inserted into the cavity 114, the end surface 112 of the consumable 70d engages the oblique surface 117 of the engagement portion 113 so as to limit rotation of the consumable 70d about the longitudinal axis 108.

[0131] In yet a further example, the second end 106 of the consumable 70e of Figure 9 is configured for threaded engagement with an engagement portion of a device (not shown). To provide this threaded engagement, the second end 106 of the consumable 70e includes a helical thread 126 (but could otherwise include a helical, or at least oblique, groove). The helical thread 126 is configured to engage with a complementary structure formed at or proximate to the base of a cavity of a device. In this way, the second end 126 is guided into engagement within the cavity (i.e. by rotation of the consumable 70e about the longitudinal axis). Once fully engaged (by sufficient rotation of the consumable 70e), the second end 106 will be limited from further rotation in the same direction (but will nevertheless be able to rotate in the opposite direction in order to disengage the second end 106).

Examples

Embodiment Construction

[0071]Before describing several examples implementing the present disclosure, it is to be understood that the present disclosure is not limited by specific construction details or process steps set forth in the following description and accompanying drawings. Rather, it will be apparent to those skilled in the art having the benefit of the present disclosure that the systems, apparatuses and / or methods described herein could be embodied differently and / or be practiced or carried out in various alternative ways.

[0072]Unless otherwise defined herein, scientific and technical terms used in connection with the presently disclosed inventive concept(s) shall have the meanings that are commonly understood by those of ordinary skill in the art, and known techniques and procedures may be performed according to conventional methods well known in the art and as described in various general and more specific references that may be cited and discussed in the present specification.

[0073]Any paten...

FIELD

[0001] The present disclosure relates to an aerosol generating apparatus.BACKGROUND

[0002] A typical aerosol generating apparatus may comprise a power supply, an aerosol generating unit that is driven by the power supply, an aerosol precursor, which in use is aerosolised by the aerosol generating unit to generate an aerosol, and a delivery system for delivery of the aerosol to a user.

[0003] In some aerosol generating apparatuses, in use, a consumable is inserted into a cavity of the device for heating. To achieve optimum performance it may, in some cases, be desirable to ensure that the consumable is suitably aligned within the cavity.

[0004] In spite of the effort already invested in the development of aerosol generating apparatuses / systems further improvements are desirable.SUMMARY

[0005] In a first aspect the present disclosure provides an aerosol generating apparatus comprising a consumable comprising an aerosol precursor, and first and second opposite ends that are longitudinally spaced from one another along a longitudinal axis. The aerosol generating apparatus also comprises a device comprising a device body defining a cavity, the cavity having a base and an opening through which the second end of the consumable can be removably inserted into the cavity in a direction towards the base. The device also includes a heating system arranged to heat the aerosol precursor when the consumable is received in the cavity.

[0006] In some examples, the consumable may be configured to permit rotation of the consumable about the longitudinal axis when the second end of the consumable is received in the cavity.

[0007] The device of the aerosol generating apparatus may comprise an engagement portion defining a recess at or proximate to the base of the cavity. The engagement portion may be configured to engage the second end of the consumable when received in the recess to limit rotation of the consumable about the longitudinal axis.

[0008] In this way, the consumable may be rotatable (about the longitudinal axis) in the cavity until the second end of the consumable is engaged with the engagement portion (i.e. by movement of the second end towards the base).

[0009] Providing an engagement portion that limits rotation of the consumable can help to ensure suitable rotational alignment of the consumable when received in the aerosol-generating apparatus (and, likewise, can ensure that such alignment is maintained in use). For example, such an arrangement may ensure that features of the consumable are aligned correctly with features of the aerosol generating apparatus (such as the heating system).

[0010] Furthermore, locating the engagement portion at the base of the cavity can help ensure that the consumable is fully inserted into cavity by a user (i.e. can facilitate longitudinal alignment of the consumable in the cavity).

[0011] When not engaged with the engagement portion, the second end of the consumable may rotate. On the other hand, when the second end is engaged with the engagement portion, rotation of the second end is limited. Accordingly, a user is able to determine whether the second end is engaged by attempting to rotate the consumable. That the engagement portion is at the base of the cavity means that the second end will only be engaged (i.e. rotation will only be limited) when the consumable is substantially fully inserted in the cavity. So, by attempting to rotate the consumable a user can determine whether the consumable has been substantially fully inserted into the cavity.

[0012] The cavity may comprise a first section, which may be at least partly defined by the engagement portion and in which rotation of the second end of the consumable may be limited (i.e. by engagement with the engagement portion). Likewise, the cavity may comprise a second section extending from the first section to the opening. The second end of the consumable may be able to rotate when received in the second section (and therefore the entire consumable may be able to rotate). That is, in the second section the cavity may be configured (e.g. shaped and / or sized) such that the second end of the consumable (and thus e.g. the consumable as a whole) is able to rotate.

[0013] The second section may extend longitudinally for at least 70% of the length of the cavity (or for at least 80% of the length of the cavity, or for at least 90% of the length of the cavity).

[0014] In other words, the depth of the recess (e.g. taken in the longitudinal direction) may be less than 30% of the length of the cavity (e.g. taken in the longitudinal direction). The depth of the recess may less than 20% or less than 30% of the length of the cavity.

[0015] The length of the cavity may be taken as the distance between the base of the cavity and the opening.

[0016] In this way, as a consumable is inserted into the cavity it may be able to be rotated by a user (e.g. with minimal resistance to such rotation). Once the second end of the consumable reaches the first section of the cavity, rotation of the consumable may be limited. Thus, the user will be able to determine (by way of the resistance to rotation) that the second end of the consumable is at or close to the base of the cavity.

[0017] The recess defined by the engagement portion may have a non-circular transverse cross-sectional shape. The recess may have, for example, an elliptical, triangular, rectangular (e.g. square), star-shaped, D-shaped, etc. cross-sectional shape.

[0018] A surface of the engagement portion extending around, so as to define, the recess (e.g. an inwardly facing surface of the engagement portion) may comprise a non-circular transverse cross-sectional shape.

[0019] The second end of the consumable may have an outer peripheral surface of non-circular transverse cross-sectional shape. The outer peripheral surface of the second end may have, for example, have an elliptical, triangular, rectangular (e.g. square), star-shaped, etc. cross-sectional shape. For the avoidance of doubt, the outer peripheral surface is an external surface of the consumable.

[0020] The outer peripheral surface may have a cross-sectional shape that is complementary to the cross-sectional shape of the recess. In this way, the second end of the consumable may fit snugly within the recess.

[0021] The recess (defined by the engagement portion) and the second end of the consumable may be shaped such that the second end of the consumable is receivable in the recess in one or more discrete rotational positions (i.e. with respect to the longitudinal axis). In this way, the engagement portion may function as a gate, allowing passage of the second end of the consumable into the recess only if oriented in the one or more discrete rotational positions.

[0022] The recess and the second end of the consumable may be shaped such that the second end of the consumable is receivable in the recess in only one (i.e. a single) rotational position. The recess and / or the second end of the consumable may, for example, have a cross-sectional shape that does not have any rotational symmetry (about the longitudinal axis).

[0023] The recess and the second end of the consumable may be shaped such that the second end of the consumable is receivable in the recess in a plurality of discrete rotational positions. The recess and / or the second end of the consumable may, for example, have a cross-sectional shape that has a discrete rotational symmetry of nth order, where n is greater than 1.

[0024] In some embodiments, the recess and the second end of the consumable may be shaped such that the second end of the consumable is receivable in the recess in e.g. more than three, or more than four, or more than eight rotational positions. It may be desirable for the second end to be receivable in a greater number of rotational positions so that a user can more easily find a rotational position in which the consumable can be fully inserted.

[0025] An outer surface of the consumable (e.g. proximate the first end of the consumable) may comprise indicia configured to aid in rotationally aligning the consumable with the engagement portion. For example, the indicia may indicate a desired rotational positioning of the consumable (e.g. may be configured to align with a feature of the device to indicate such positioning).

[0026] In some embodiment an outer surface of the consumable may comprise indicia configured to indicate whether the consumable has been fully inserted into the cavity. For example, the indicia may be arranged so as to only be visible when the consumable is not fully inserted into the cavity (i.e. may be obstructed from view, in the cavity, when the consumable is fully inserted).

[0027] One of the outer peripheral surface and an inwardly facing surface of the engagement portion may comprise one or more channels and the other of the outer peripheral surface and inwardly facing surface may comprise one or more projections. The projections may be arranged for receipt in the channels.

[0028] Providing such features on the outer peripheral surface may aid in limiting rotation (because the force required to restrict such rotation may be reduced at the outer periphery).

[0029] Each channel and / or projection may be longitudinally extending. The channels or projections arranged on the outer peripheral surface of the second end of the consumable may extend to an end surface of the consumable (i.e. at the second end).

[0030] The channels and / or projections may be (e.g. evenly) spaced in a circumferential direction around the outer peripheral surface or inwardly facing surface. This may provide an even distribution of force when resisting rotation of the consumable.

[0031] The channels and / or projections may vary in shape and / or size. That is, the outer peripheral surface may comprise a plurality of channels or projections, which may differ in shape and / or size.

[0032] Each projection and / or channel may have an axial length (taken in the longitudinal direction) of less than e.g. 15 mm, or e.g. less than 10 mm, or e.g. less than 5 mm.

[0033] In some embodiments, the consumable may comprise a bore extending into the second end of the consumable. The bore may be of non-circular cross-sectional shape.

[0034] The engagement portion may comprise a protrusion that extends from the base of the cavity for engagement in the bore. The protrusion may be of non-circular cross-sectional shape. The protrusion may at least partly define the recess of the engagement portion (the recess may extend around the protrusion). The protrusion may have a cross-sectional shape that is complementary to the cross-sectional shape of the bore.

[0035] Engagement between the protrusion and the bore may limit rotation of the consumable about the longitudinal axis.

[0036] The protrusion and / or bore may have a cross-sectional shape that is e.g. elliptical, triangular, rectangular (e.g. square), star-shaped, D-shaped, etc.

[0037] The protrusion and / or bore may have an axial length (taken in the longitudinal direction) of less than e.g. 15 mm, or e.g. less than 10 mm, or e.g. less than 5 mm.

[0038] In some embodiments, an end surface of the second end of the consumable may be configured to engage with the engagement portion to limit rotation of the consumable about the longitudinal axis.

[0039] In some embodiments, the end surface may be non-planar and / or obliquely oriented with respect to the longitudinal axis.

[0040] For example, the end surface of the consumable may comprise a plurality of longitudinally projecting teeth (i.e. the end surface may be non-planar due to the presence of the teeth). The base of the cavity may comprise a plurality of teeth-receiving recesses for receipt of the teeth.

[0041] The teeth may be distributed around a periphery of the end surface. The teeth may be evenly distributed in a circumferential direction. In one example, the second end of the consumable may have a castellated shape.

[0042] Each tooth may be tapered in a direction of extension of the tooth from the end surface of the second end of the consumable.

[0043] Likewise, the teeth-receiving recesses may be distributed around a periphery of the base of the cavity (and may be evenly distributed in a circumferential direction).

[0044] As may be appreciated, when the end surface is obliquely oriented, the base of the cavity may also be obliquely oriented (i.e. sloped). In this way, engagement between the end surface of the second end and the base of the cavity may restrict rotation of the consumable about the longitudinal axis.

[0045] In some embodiments, the engagement portion may be configured to guide the second end of the consumable into the recess (defined by the engagement portion). The engagement portion may be configured for threaded engagement with the second end of the consumable. Thus, the engagement portion and / or second end of the consumable may comprise a thread and / or groove for guiding the second end into the recess. The thread and / or groove may extend obliquely with respect to the longitudinal axis of the consumable (e.g. may be helical).

[0046] A thread or groove may be provided, for example, on the outer peripheral surface of the second end and / or within the bore (when present) in the second end of the consumable. Alternatively or additionally, a thread or groove may be provided, for example, on an inwardly facing surface of the engagement portion and / or on the protrusion (when present) of the engagement portion.

[0047] In such embodiments, in use, rotation of the consumable about the longitudinal axis may cause the second end of the consumable to move into the recess of the engagement portion (e.g. guided by the thread / groove).

[0048] In such embodiments, rotation of the second end of the consumable may be limited (in one direction) once the second end of the consumable is fully received in the recess of the engagement portion. Of course, to disengage the consumable from the engagement portion, the consumable may be rotated in the opposite direction.

[0049] The engagement portion may be an integral part of the device body (e.g. may be integrally formed with one or more walls of the device body defining the cavity). In other embodiments, the engagement portion may be a separate component inserted into the cavity.

[0050] In some embodiments, the second end of the consumable may be at least partly defined by a filter (e.g. an upstream filter of the consumable). The filter may be formed of a porous material. The filter may be formed of a fibrous material. The filter may comprise, for example, cellulose acetate. At least the peripheral surface of the filter may be hardened. For example, the filter may be hardened by curing a plasticiser contained within the filter.

[0051] The consumable may comprise a wrapper that circumscribes the filter. The wrapper may at least partly define the second end of the consumable. For example, when present, the wrapper may define the outer peripheral surface of the second end of the consumable.

[0052] The wrapper may connect the filter to the substrate. The wrapper may comprise a plurality of layers. The wrapper may be formed of a cellulosic material (e.g. paper).

[0053] An outer cross-sectional shape of the consumable, except for at the second end, may be substantially circular. Thus, the consumable may comprise a first section of circular cross-sectional shape and a second section at the second end of non-circular cross-sectional shape. The second section may extend for less than 30% of the length of the consumable, or e.g. less than 20% of the length, or e.g. less than 10% of the length.

[0054] The substrate may be substantially cylindrical. The substrate may be a solid substrate. The substrate may comprise tobacco (e.g. may comprise a reconstituted tobacco). The consumable may be heat-not-burn consumable. The may be a heat-not-burn device (i.e. a device for heating a heat-not-burn consumable).

[0055] The first end of the consumable may be a mouth end of the consumable (i.e. the end of the consumable that is received in or close to the mouth of a user in normal use). The consumable may comprise a mouthpiece filter at or proximate to the first end.

[0056] The heater may be elongate. The heater may be configured for penetration into the consumable when received in the cavity (e.g. may be a rod or blade shaped heater). Alternatively, the heater may be arranged to at least partly surround the consumable when received in the cavity (e.g. may be a tubular shaped heater). The heater may extend longitudinally.

[0057] In embodiments in which the heater is configured for penetration into the consumable, and in which the engagement portion comprises a protrusion (for receipt in the bore of the consumable), the engagement portion may be a heater support (e.g. at a base of the heater). Thus, the heater may extend from the protrusion.

[0058] The device may comprise a consumable detection sensor that is arranged to detect the presence of the second end of the consumable in the recess defined by the engagement portion. The sensor may be a contact sensor (e.g. configured to contact of the consumable therewith), a proximity sensor, an optical sensor, etc.

[0059] The device may comprise electrical circuitry (e.g. a controller) operatively connected to the sensor. The controller may be configured to operate the device in response to detection (or non-detection) of the second end of the consumable in the recess.

[0060] The controller may be operatively connected to the heater. The controller may be configured to control the heating system in response to detection of the second end of the consumable in the recess of the engagement portion. For example, the controller may be configured to activate the heating system (e.g. by controlling a flow of power to the heater from a power source) in response to detection of the second end of the consumable in the recess. In this way, the heating system may be automatically activated by the device upon full insertion of the consumable into the cavity.

[0061] The controller may be configured to prevent activation of (or to not activate) the heating system in response to the sensor not detecting the presence of the second end of the consumable in the recess. That is, when the sensor does not detect the second end in the recess, the controller may be configured to prevent the heating system from activating. In this way, the heating system may be prevented from activating when the consumable is not fully inserted in the cavity. Similarly, the heater may be prevented from activating when a non-authorised consumable (e.g. a consumable that is not suited for use with the device and thus not including a second end receivable in the recess) is received in the cavity.

[0062] The present disclosure may provide a use of the apparatus of the first aspect. The use may comprise inserting the consumable into the cavity, rotating the consumable such that the second end is aligned with the recess of the engagement portion for receipt in the engagement portion, and subsequently further inserting the consumable such that the second end of the consumable is received in the recess.

[0063] In a second aspect there is provided an aerosol generating consumable for receipt in the cavity of a device. The consumable comprises first and second opposite ends spaced apart along a longitudinal axis. The second end is configured for insertion into the cavity of the device. The consumable also comprises an aerosol precursor and a filter provided at the second end.

[0064] In some examples, an end surface and / or an outer peripheral surface of the filter may be configured for engagement with the device, in use, when the second end is fully inserted into the cavity of the device, such engagement limiting rotation of the consumable about a longitudinal axis of the consumable.

[0065] The consumable of the second aspect may include one or more features of the consumable described above with respect to the first aspect. For example, the filter of the second aspect may comprise the channels / projections, bore, and / or axial projection(s) of the first aspect.

[0066] In a third aspect there is provided an aerosol generating apparatus comprising a consumable of the second aspect, and a device defining a cavity for insertion of the second end of the consumable (e.g. towards a base of the cavity), and a heating system arranged to heat the aerosol precursor of the consumable when received in the cavity.

[0067] In some examples, the filter of the consumable may be configured for engagement with an engagement portion defined by a wall of the cavity of the device, in use, when the second end of the consumable is substantially fully inserted therein, such engagement limiting rotation of the consumable about a longitudinal axis of the consumable.

[0068] The aerosol generating apparatus of the third aspect may include one or more features of the aerosol generating apparatus of the first aspect. For example, the engagement portion of the third aspect may include one or more features of the engagement portion of the first aspect.

[0069] The preceding summary is provided for purposes of summarizing some examples to provide a basic understanding of aspects of the subject matter described herein. Accordingly, the above-described features should not be construed to narrow the scope or spirit of the subject matter described herein in any way. Moreover, the above and / or proceeding examples may be combined in any suitable combination to provide further examples, except where such a combination is clearly impermissible or expressly avoided. Other features, aspects, and advantages of the subject matter described herein will become apparent from the following text and the accompanying drawings.BRIEF DESCRIPTION OF THE FIGURES

[0070] Aspects, features and advantages of the present disclosure will become apparent from the following description of examples in reference to the appended drawings in which like numerals denote like elements. Fig. 1 is a block system diagram showing an example aerosol generating apparatus. Fig. 2 is a block system diagram showing an example implementation of the apparatus of Fig. 1, where the aerosol generating apparatus is configured to generate aerosol from a solid precursor. Fig. 3 is a schematic diagram showing an example implementation of the apparatus of Fig. 2. Fig. 4 is a side section view of the example implementation of Fig. 3. Fig. 5A is a side section view of a second example apparatus. Fig. 5B is a top section view of the second example apparatus. Fig. 5C is a perspective view of a consumable of the second example apparatus. Fig. 6A is a side section view of a third example apparatus. Fig. 6B is a perspective view of a consumable of the third example apparatus. Figs. 7A and 7B are respective end and side views of a consumable of a fourth example apparatus. Fig. 8 is a schematic section view of a fifth example apparatus. Fig. 9 is a side view of a consumable of a sixth example apparatus. DETAILED DESCRIPTION OF EMBODIMENTS

[0071] Before describing several examples implementing the present disclosure, it is to be understood that the present disclosure is not limited by specific construction details or process steps set forth in the following description and accompanying drawings. Rather, it will be apparent to those skilled in the art having the benefit of the present disclosure that the systems, apparatuses and / or methods described herein could be embodied differently and / or be practiced or carried out in various alternative ways.

[0072] Unless otherwise defined herein, scientific and technical terms used in connection with the presently disclosed inventive concept(s) shall have the meanings that are commonly understood by those of ordinary skill in the art, and known techniques and procedures may be performed according to conventional methods well known in the art and as described in various general and more specific references that may be cited and discussed in the present specification.

[0073] Any patents, published patent applications, and non-patent publications mentioned in the specification are hereby incorporated by reference in their entirety.

[0074] All examples implementing the present disclosure can be made and executed without undue experimentation in light of the present disclosure. While particular examples have been described, it will be apparent to those of skill in the art that variations may be applied to the systems, apparatus, and / or methods and in the steps or in the sequence of steps of the methods described herein without departing from the concept, spirit, and scope of the inventive concept(s). All such similar substitutions and modifications apparent to those skilled in the art are deemed to be within the spirit, scope, and concept of the inventive concept(s) as defined by the appended claims.

[0075] The use of the term "a" or "an" in the claims and / or the specification may mean "one," as well as "one or more," "at least one," and "one or more than one." As such, the terms "a," "an," and "the," as well as all singular terms, include plural referents unless the context clearly indicates otherwise. Likewise, plural terms shall include the singular unless otherwise required by context.

[0076] The use of the term "or" in the present disclosure (including the claims) is used to mean an inclusive "and / or" unless explicitly indicated to refer to alternatives only or unless the alternatives are mutually exclusive. For example, a condition "A or B" is satisfied by any of the following: A is true (or present) and B is false (or not present), A is false (or not present) and B is true (or present), and both A and B are true (or present).

[0077] As used in this specification and claim(s), the words "comprising, "having," "including," or "containing" (and any forms thereof, such as "comprise" and "comprises," "have" and "has," "includes" and "include," or "contains" and "contain," respectively) are inclusive or open-ended and do not exclude additional, unrecited elements or method steps.

[0078] Unless otherwise explicitly stated as incompatible, or the physics or otherwise of the embodiments, examples, or claims prevent such a combination, the features of examples disclosed herein, and of the claims, may be integrated together in any suitable arrangement, especially ones where there is a beneficial effect in doing so. This is not limited to only any specified benefit, and instead may arise from an "ex post facto" benefit. This is to say that the combination of features is not limited by the described forms, particularly the form (e.g. numbering) of example(s), embodiment(s), or dependency of claim(s). Moreover, this also applies to the phrase "in one embodiment," "according to an embodiment," and the like, which are merely a stylistic form of wording and are not to be construed as limiting the following features to a separate embodiment to all other instances of the same or similar wording. This is to say, a reference to 'an,' 'one,' or 'some' embodiment(s) may be a reference to any one or more, and / or all embodiments, or combination(s) thereof, disclosed. Also, similarly, the reference to "the" embodiment may not be limited to the immediately preceding embodiment. Further, all references to one or more embodiments or examples are to be construed as non-limiting to the claims.

[0079] The present disclosure may be better understood in view of the following explanations, wherein the terms used that are separated by "or" may be used interchangeably:

[0080] As used herein, an "aerosol generating apparatus" (or "electronic(e)-cigarette" ) may be an apparatus configured to deliver an aerosol to a user for inhalation by the user. The apparatus may additionally / alternatively be referred to as a "smoking substitute apparatus", if it is intended to be used instead of a conventional combustible smoking article. As used herein a combustible "smoking article" may refer to a cigarette, cigar, pipe or other article, that produces smoke (an aerosol comprising solid particulates and gas) via heating above the thermal decomposition temperature (typically by combustion and / or pyrolysis). An aerosol generated by the apparatus may comprise an aerosol with particle sizes of 0.2 - 7 microns, or less than 10 microns, or less than 7 microns. This particle size may be achieved by control of one or more of: heater temperature; cooling rate as the vapour condenses to an aerosol; flow properties including turbulence and velocity. The generation of aerosol by the aerosol generating apparatus may be controlled by an input device. The input device may be configured to be user-activated, and may for example include or take the form of an actuator (e.g. actuation button) and / or an airflow sensor.

[0081] Each occurrence of the aerosol generating apparatus being caused to generate aerosol for a period of time (which may be variable) may be referred to as an "activation" of the aerosol generating apparatus. The aerosol generating apparatus may be arranged to allow an amount of aerosol delivered to a user to be varied per activation (as opposed to delivering a fixed dose of aerosol), e.g. by activating an aerosol generating unit of the apparatus for a variable amount of time, e.g. based on the strength / duration of a draw of a user through a flow path of the apparatus (to replicate an effect of smoking a conventional combustible smoking article).

[0082] The aerosol generating apparatus may be portable. As used herein, the term "portable" may refer to the apparatus being for use when held by a user.

[0083] As used herein, an "aerosol" may include a suspension of precursor, including as one or more of: solid particles; liquid droplets; gas. Said suspension may be in a gas including air. An aerosol herein may generally refer to / include a vapour. An aerosol may include one or more components of the precursor.

[0084] As used herein, a "precursor" may include one or more of a: liquid; solid; gel; loose leaf material; other substance. The precursor may be processed by an aerosol generating unit of an aerosol generating apparatus to generate an aerosol. The precursor may include one or more of: an active component; a carrier; a flavouring. The active component may include one or more of nicotine; caffeine; a cannabidiol oil; a non-pharmaceutical formulation, e.g. a formulation which is not for treatment of a disease or physiological malfunction of the human body. The active component may be carried by the carrier, which may be a liquid, including propylene glycol and / or glycerine. The term "flavouring" may refer to a component that provides a taste and / or a smell to the user. The flavouring may include one or more of: Ethylvanillin (vanilla); menthol, Isoamyl acetate (banana oil); or other. The precursor may include a substrate, e.g. reconstituted tobacco to carry one or more of the active component; a carrier; a flavouring.

[0085] As used herein, a "storage portion" may be a portion of the apparatus adapted to store the precursor. It may be implemented as a carrier for solid material.

[0086] As used herein, a "flow path" may refer to a path or enclosed passageway through an aerosol generating apparatus, e.g. for delivery of an aerosol to a user. The flow path may be arranged to receive aerosol from an aerosol generating unit. When referring to the flow path, upstream and downstream may be defined in respect of a direction of flow in the flow path, e.g. with an outlet being downstream of an inlet.

[0087] As used herein, a "delivery system" may be a system operative to deliver an aerosol to a user. The delivery system may include a mouthpiece and a flow path.

[0088] As used herein, a "flow" may refer to a flow in a flow path. A flow may include aerosol generated from the precursor. The flow may include air, which may be induced into the flow path via a puff by a user.

[0089] As used herein, a "puff" (or "inhale" or "draw") by a user may refer to expansion of lungs and / or oral cavity of a user to create a pressure reduction that induces flow through the flow path.

[0090] As used herein, an "aerosol generating unit" may refer to a device configured to generate an aerosol from a precursor. The aerosol generating unit may include a unit to generate a vapour directly from the precursor (e.g. a heating system or other system) or an aerosol directly from the precursor (e.g. an atomiser including an ultrasonic system, a flow expansion system operative to carry droplets of the precursor in the flow without using electrical energy or other system). A plurality of aerosol generating units to generate a plurality of aerosols (for example, from a plurality of different aerosol precursors) may be present in an aerosol generating apparatus.

[0091] As used herein, a "heating system" may refer to an arrangement of at least one heating element, which is operable to aerosolise a precursor once heated. The at least one heating element may be electrically resistive to produce heat from the flow of electrical current therethrough. The at least one heating element may be arranged as a susceptor to produce heat when penetrated by an alternating magnetic field. The heating system may be configured to heat a precursor to below 300 or 350 degrees C, including without combustion.

[0092] As used herein, a "consumable" may refer to a unit that includes a precursor. The consumable may include a mouthpiece. The consumable may include an information carrying medium. With solid material implementations of the precursor, e.g. tobacco or reconstituted tobacco formulation, the consumable may be referred to as a "stick" or "package" or "heat-not-burn consumable". In a heat-not-burn consumable, the mouthpiece may be implemented as a filter and the consumable may be arranged to carry the precursor. The consumable may be implemented as a dosage or pre-portioned amount of material, including a loose-leaf product.

[0093] As used herein, an "information carrying medium" may include one or more arrangements for storage of information on any suitable medium. Examples include: a computer readable medium; a Radio Frequency Identification (RFID) transponder; codes encoding information, such as optical (e.g. a bar code or QR code) or mechanically read codes (e.g. a configuration of the absence or presents of cut-outs to encode a bit, through which pins or a reader may be inserted).

[0094] As used herein "heat-not-burn" (or "HNB" or "heated precursor") may refer to the heating of a precursor, typically tobacco, without combustion, or without substantial combustion (i.e. localised combustion may be experienced of limited portions of the precursor, including of less than 5% of the total volume).

[0095] Referring to Figure 1, an example aerosol generating apparatus 1 includes a power supply 2, for supply of electrical energy. The apparatus 1 includes an aerosol generating unit 4 that is driven by the power supply 2. The power supply 2 may include an electric power supply in the form of a battery and / or an electrical connection to an external power source. The apparatus 1 includes a precursor 6, which in use is aerosolised by the aerosol generating unit 4 to generate an aerosol. The apparatus 1 includes a delivery system 8 for delivery of the aerosol to a user.

[0096] Electrical circuitry (not shown in Figure 1) may be implemented to control the interoperability of the power supply 4 and aerosol generating unit 6.

[0097] Figure 2 shows an implementation of the apparatus 1 of Figure 1, where the aerosol generating apparatus 1 is configured to generate aerosol by a-heat not-burn process.

[0098] In this example, the apparatus 1 includes a device 50 (including a device body 59) and a consumable 70.

[0099] In this example, the device 50 includes the power supply 4 and a heating system 52. The heating system 52 includes at least one heating element 54. The device 50 may additionally include any one or more of electrical circuitry 56, a memory 58, a wireless interface 60, and one or more other components 62.

[0100] The electrical circuitry 56 may include a processing resource for controlling one or more operations of the device 50, e.g. based on instructions stored in the memory 58.

[0101] The wireless interface 60 may be configured to communicate wirelessly with an external (e.g. mobile) device, e.g. via Bluetooth.

[0102] The other component(s) 62 may include an actuator, one or more user interface devices configured to convey information to a user and / or a charging port, for example.

[0103] The device 50 is configured to engage with the consumable 70 such that the at least one heating element 54 of the heating system 52 penetrates into, or at least partly surrounds, the solid precursor 6 of the consumable. In use, a user may activate the aerosol generating apparatus 1 to cause the heating system 52 of the device 50 to cause the at least one heating element 54 to heat the solid precursor 6 of the consumable (without combusting it) by conductive heat transfer, to generate an aerosol which is inhaled by the user.

[0104] Figure 3 shows an example implementation of the aerosol generating apparatus 1 of Figure 4.

[0105] As depicted in Figure 3, the consumable 70 is implemented as a stick, which is engaged with the device 50 by inserting the stick into an opening 123 at a top end 53 of the device body 59, which causes the at least one heating element 54 of the heating system 52 to penetrate into the solid precursor 6.

[0106] In this example, the at least one heating element 54 is a rod-shaped element with a circular transverse profile. Other heating element shapes are possible, e.g. the at least one heating element 54 may be blade-shaped (with a rectangular transverse profile) or tube-shaped (e.g. with a hollow transverse profile).

[0107] In this example, the device 50 includes a cap 51. In use the cap 51 is engaged at a top end 53 of the device body 59. Although not apparent from Figure 5, the cap 51 is moveable relative to the device body 59. In particular, the cap 51 is slidable and can slide along a longitudinal axis of the device body 59.

[0108] The device 50 also includes an actuator 55 on an outer surface of the device body 59. In this example, the actuator 55 has the form of a button.

[0109] The device 50 also includes a user interface device configured to convey information to a user. Here, the user interface device is implemented as a plurality of lights 57, which may e.g. be configured to illuminate when the apparatus 1 is activated and / or to indicate a charging state of the power supply 4. Other user interface devices are possible, e.g. to convey information haptically or audibly to a user.

[0110] The device 50 may also include an airflow sensor which detects airflow in the aerosol generating apparatus 1 (e.g. caused by a user inhaling through the consumable 70). This may be used to count puffs, for example.

[0111] In this example, the consumable 70 includes a flow path which transmits aerosol generated by the at least one heating element 54 to the mouthpiece of the consumable.

[0112] In this example, the aerosol generating unit 4 is provided by the above-described heating system 52 and the delivery system 8 is provided by the above-described flow path and mouthpiece of the consumable 70.

[0113] The consumable 70 is shown in more detail in Figure 4. The consumable 70 includes the solid precursor 6, which in this embodiment comprises a solid smokable substrate 102 containing the precursor 6. The substrate 102 is proximal to the device body 59 in use, and a mouthpiece filter 101 of the consumable 70 is distal to the device body 50 in use. The mouthpiece filter 101 is at a first end 107 of the consumable 70 and serves as the mouthpiece of the consumable 70 (and thus the apparatus 1 as a whole). The smokable substrate 102 may be a reconstituted tobacco formulation.

[0114] The consumable 70 further includes a tubular hollow bore filter 103 immediately downstream of the substrate 102 and a chamber 104 immediately downstream of the hollow bore filter 103 (so as to be between the hollow bore filter 103 and the mouthpiece filter 101). An upstream filter 105 is provided at a second end 106 of the consumable 70 (which is opposite to, and longitudinally spaced from, the first end 107 of the consumable 70). The various internal components of the consumable 70 are combined within a paper wrapper 109, which extends circumferentially about the components of the consumable 70.

[0115] As should be apparent from the figure, the second end 106 of the consumable 70 is inserted into a cavity 114 defined by the device body 59, through an upper opening 123 of the cavity 114. As will be described further below, the second end 106 of the consumable 70 engages with an engagement portion 113 of the device 50 when the consumable 70 is fully inserted into the cavity 114 so as to restrict rotation of the consumable 70 about a longitudinal axis 108 of the consumable 70.

[0116] Thus, the cavity 114 can be nominally divided into a first section 124 defined by the engagement portion 113 and a second section 125 that extends from the first section 124 to the opening 123. When the second end 106 of the consumable 70 is located in the first section 124, the second end 106 engages with the engagement portion 113 to limit rotation of the consumable 70 about the longitudinal axis 108. On the other hand, when the second end 106 of the consumable 70 is located in the second section 125 it is able to rotate (such that the consumable 70 is also able to rotate). In this way, a user is able to determine the location of the second end 106 of the consumable 70 within the cavity 114.

[0117] Figures 5A, 5B and 5C illustrates a further example of the consumable 70a for use with a device 50a. In this example, the upstream filter 105 defines the second end 106 of the consumable 70a.

[0118] As can be seen in Figure 5C, in particular, the upstream filter 105 includes an outer peripheral surface 110 that has a non-circular transverse cross-sectional shape. In particular, the outer peripheral surface 110 includes a plurality of longitudinally extending channels 111. Each channel 111 extends to an end surface 112 of the upstream filter 105. The channels 111 each have a semi-circular cross-sectional shape and are equally spaced from one another in a circumferential direction around the periphery of the upstream filter 105. A portion of the upstream filter 105 extends axially beyond an end of the wrapper 109 such that the channels 111 are externally exposed (so as to form an external part of the consumable 70a).

[0119] The device 50a includes an engagement portion 113 that is located at a base 117 of the cavity 114 (although illustrated as a separate portion, the engagement portion 113 may otherwise be integral with the walls of the device 50 that define the cavity 114). As is most apparent from Figure 5B, the engagement portion 113 defines a recess 115 that is complementary in shape to the second end 106 of the consumable 70a (in particular, the upstream filter 105). Thus, an inwardly facing surface 122 of the engagement portion 113 includes a plurality of longitudinally extending projections 116 that are spaced from one another in the circumferential direction (i.e. about the longitudinal axis). As may be appreciated from the figures, the projections 116 are configured for receipt in the channels 111 of the upstream filter 105 of the consumable 70a when the second end 106 of the consumable 70a is inserted into the recess 115 defined by the engagement portion 113. Such receipt of the projections 116 in the channels 111 provides engagement between the engagement portion 113 and the second end 106 of the consumable 70a so as to restrict rotation of the consumable 70a about the longitudinal axis.

[0120] Accordingly, in use, a user can insert the consumable 70a into the cavity 114 of the device 50 in a longitudinal direction (i.e. along the longitudinal axis). If the channels 111 of the consumable 70a are misaligned with the projections 116 of the engagement portion 113 (due to the rotational position of the consumable 70a), then the consumable 70a will not be able to be fully inserted into the cavity 114. Instead, the end surface 112 of the upstream filter 105 will abut against an upper surface 118 of the engagement portion 113 so as to be prevented from being moved further towards the base 117 of the cavity 114.

[0121] In such circumstances a user must rotate the consumable 70a about the longitudinal axis in order to bring the channels 111 of the consumable 70a into alignment with the projections 116 of the engagement portion 113. As may be appreciated, because the upstream filter 105 includes a total of eight channels 111, there are eight rotational positions of the consumable 70a which will achieve such alignment. When aligned, the consumable 70a can then be moved further into the cavity 114 such that the second end 106 of the consumable 70a is received in the recess 115 defined by the engagement portion 113.

[0122] Once received in the recess 115 in this way, the consumable 70a will be restricted against rotation about the longitudinal axis (i.e. by positive engagement between the outer peripheral surface 110 of the upstream filter 105 and the inwardly facing surface 122 of the engagement portion 113). This indicates to a user that the consumable 70a is fully received within the cavity 114 of the device 50, thus ensuring correct alignment between the components of the consumable 70a and the rod-shaped heating element 54 (shown in dashed lines for clarity) of the device 50.

[0123] The device 50a further includes a consumable detection sensor 127 (which in this case is a contact sensor) that is configured to detect the presence of the second end 106 of the consumable 70a in the recess 115 of the engagement portion 113. The sensor 127 is operatively connected to electrical circuitry (not shown) of the device 50a that is configured to control the device 50a. In particular, the electrical circuitry is configured to control activation of the heating element 54, by only permitting such activation when the second end of the 106 of the consumable 70a is detected (by the sensor 127) in the recess 115.

[0124] Figures 6A and 6B illustrate a further example of a consumable 70b and corresponding device 50b. As is most apparent from Figure 7B, the second end 106 of the consumable 70b is partly defined by an upstream filter 105 having a bore 119 formed therein. In particular, the bore 119 extends into an end surface 112 of the upstream filter 105 and has a triangular cross-sectional shape (taken perpendicular to the longitudinal axis of the consumable 70b).

[0125] The device 50b includes an engagement portion 113 at the base 117 of the cavity 114 comprising a projection 120 of triangular cross-sectional shape extending longitudinally (upwards from the base 117) into the cavity 114. The projection 120 is complementary in shape to the bore 119 of the upstream filter 105, such that it is able to be received in the bore 119.

[0126] When the consumable 70b is inserted into the cavity 114 of the device 50b, if the orientation of the consumable 70b (about the longitudinal axis) is such that the bore 119 is misaligned with the projection 120, then the consumable 70b is prevented from being fully inserted into the cavity 114. In such circumstances, the end surface 112 of the consumable 70b abuts against an upper surface 118 of the projection 120 (to prevent further movement of the consumable 70b along the cavity 114).

[0127] Thus, as described above, a user must rotate the consumable 70b so as to align the bore 119 with the projection 120. Upon such alignment, the projection 120 will be received in the bore 119 and the consumable 70b will be fully received in the cavity 114 (in the present example, this is when the end surface 112 of the consumable 70b abut against the base 117 of the cavity 114).

[0128] When the projection 120 is received in the bore 119, positive engagement between the projection 120 and the walls of the bore 119 restrict rotation of the consumable 70b about the longitudinal axis. Thus, again, a user is able to determine that the consumable 70b is fully inserted simply by attempting to rotate the consumable 70b.

[0129] As may be appreciated, the second end of the consumable (and the engagement portion of the device body) of the apparatus may take various other shapes. A further example of the consumable 70c is shown in Figures 7A and 7B. In this example, the second end 106 of the consumable 70c is non-planar, in that it includes axial projections in the form of teeth 121. Each tooth 121 extends from an end surface 112 of the second end 106 of the consumable 70c (provided by an upstream filter 105). The teeth 121 are arranged in a circular array on the end surface 112 and are circumferentially spaced such that the second end 106 of the consumable 70c has a castellated shape. As should be appreciated, a corresponding device (not shown) can include a complementary array of recesses for receipt of the teeth 121 (to limit rotation of the consumable 70c when the second end 106 is received therein).

[0130] Figure 8 illustrates a further example of a consumable 70d (and corresponding device 50d). In this example, the consumable 70d includes an end surface 112 that is oriented so as to be oblique with respect to the longitudinal axis 108 of the consumable 70d. The engagement portion 113 includes a complementary oblique surface 117 (which defined a base of the cavity 114). When the consumable 70d is fully inserted into the cavity 114, the end surface 112 of the consumable 70d engages the oblique surface 117 of the engagement portion 113 so as to limit rotation of the consumable 70d about the longitudinal axis 108.

[0131] In yet a further example, the second end 106 of the consumable 70e of Figure 9 is configured for threaded engagement with an engagement portion of a device (not shown). To provide this threaded engagement, the second end 106 of the consumable 70e includes a helical thread 126 (but could otherwise include a helical, or at least oblique, groove). The helical thread 126 is configured to engage with a complementary structure formed at or proximate to the base of a cavity of a device. In this way, the second end 126 is guided into engagement within the cavity (i.e. by rotation of the consumable 70e about the longitudinal axis). Once fully engaged (by sufficient rotation of the consumable 70e), the second end 106 will be limited from further rotation in the same direction (but will nevertheless be able to rotate in the opposite direction in order to disengage the second end 106).

Examples

Embodiment Construction

[0071]Before describing several examples implementing the present disclosure, it is to be understood that the present disclosure is not limited by specific construction details or process steps set forth in the following description and accompanying drawings. Rather, it will be apparent to those skilled in the art having the benefit of the present disclosure that the systems, apparatuses and / or methods described herein could be embodied differently and / or be practiced or carried out in various alternative ways.

[0072]Unless otherwise defined herein, scientific and technical terms used in connection with the presently disclosed inventive concept(s) shall have the meanings that are commonly understood by those of ordinary skill in the art, and known techniques and procedures may be performed according to conventional methods well known in the art and as described in various general and more specific references that may be cited and discussed in the present specification.

[0073]Any paten...

Claims

1. An aerosol generating apparatus comprising: a consumable comprising an aerosol precursor, and first and second opposite ends that are longitudinally spaced from one another along a longitudinal axis; and a device comprising: a device body defining a cavity, the cavity having a base and an opening through which the second end of the consumable can be removably inserted into the cavity in a direction towards the base, the cavity configured to permit rotation of the consumable about the longitudinal axis when the second end of the consumable is received in the cavity, an engagement portion defining a recess at or proximate to the base of the cavity for receipt of the second end of the consumable, the engagement portion configured to engage the second end of the consumable when received in the recess to limit rotation of the consumable about the longitudinal axis; and a heating system arranged to heat the aerosol precursor when the consumable is received in the cavity.

2. An aerosol generating apparatus according to claim 1, wherein a depth of the recess is less than 30% of a length of the cavity.

3. The aerosol generating apparatus according to claim 1 or 2, wherein the recess defined by the engagement portion is shaped such that the second end of the consumable is receivable therein in one or more discrete rotational positions.

4. The aerosol generating apparatus according to claim 3, wherein recess defined by the engagement portion is shaped such that the second end of the consumable is receivable therein in only one rotational position.

5. The aerosol generating apparatus according to any one of the preceding claims, wherein recess has a non-circular transverse cross-sectional shape.

6. The aerosol generating apparatus according to any one of the preceding claims, wherein an outer peripheral surface of the second end of the consumable comprises a non-circular transverse cross-sectional shape.

7. The aerosol generating apparatus according to claim 6, wherein one of the outer peripheral surface and an inwardly facing surface of the engagement portion comprises one or more channels and the other of the outer peripheral surface and inwardly facing surface comprises one or more projections, and wherein the projections are arranged for receipt in the channels.

8. The aerosol generating apparatus according to claim 7, wherein the projection(s) and / or channel(s) are longitudinally extending.

9. The aerosol generating apparatus according to any one of the preceding claims, wherein the consumable comprises a bore of non-circular cross-sectional shape extending into the second end of the consumable, and the engagement portion comprises a protrusion of non-circular cross-sectional shape that protrudes from the base of the cavity for engagement in the bore to restrict rotation of the consumable.

10. The aerosol generating apparatus according to claim 9, wherein the heating system comprises a heater extending into the cavity in a direction away from the base for penetration into the consumable when inserted into the cavity, and wherein the protrusion is a heater support from which the heater extends.

11. The aerosol generating apparatus according to any one of the preceding claims, wherein an end surface of the second end of the consumable is non-planar and / or extends obliquely with respect to the longitudinal axis.

12. The aerosol generating apparatus according to claim 11, wherein the end surface of the second end of the consumable comprises a plurality of longitudinally projecting teeth, and wherein the engagement portion comprises a plurality of teeth-receiving recesses for receipt of the teeth.

13. The aerosol generating apparatus according to any one of the preceding claims wherein the engagement portion is configured for threaded engagement with the second end of the consumable.

14. The aerosol generating apparatus according to any one of the preceding claims wherein the consumable comprises a filter, and wherein the second end of the consumable is at least partly defined by the filter.

15. An aerosol generating consumable for receipt in the cavity of a device, the consumable comprising: first and second opposite ends spaced apart along a longitudinal axis, the second end configured for insertion into the cavity of the device; an aerosol precursor; and a filter provided at the second end, wherein an end surface and / or an outer peripheral surface of the filter is configured for engagement with the device, in use, when the second end is fully inserted into the cavity of the device, such engagement limiting rotation of the consumable about a longitudinal axis of the consumable.

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