CN114144085A

CN114144085A - Smoking substitute system

Info

Publication number: CN114144085A
Application number: CN202080034576.3A
Authority: CN
Inventors: 凯特·费里; 罗斯·申顿; 克里斯·洛德; 萨曼莎·默里; 汤姆·萨德罗; 皮特·洛马斯
Original assignee: Nerudia Ltd
Current assignee: IMPERIAL TOBACCO Ltd
Priority date: 2019-03-22
Filing date: 2020-03-13
Publication date: 2022-03-04
Also published as: WO2020193206A1; EP3711528A1; JP2022526322A; EP3941269A1; TW202042669A

Abstract

A smoking-substitute device (201) having a body (209), a heating element extending from the body, and a cap (210) removably connected to the body. The cap is movable along a longitudinal axis of the body between a first position and a second position. In the first position, the heating element is concealed in the cap, and in the second position, the heating element is at least partially exposed.

Description

Smoking substitute system

Technical Field

The present invention relates to a smoking-substitute system, and in particular, but not exclusively, to a smoking-substitute system comprising a smoking-substitute device and a tool for the device.

Background

Smoking of tobacco is generally considered to expose the smoker to potentially harmful substances. It is generally believed that the heat caused by the incineration and/or combustion of tobacco, as well as the components of the incinerated tobacco in the tobacco smoke itself, produces a large amount of potentially harmful substances.

Conventional combustible smoking articles, such as cigarettes, typically include a cylindrical tobacco rod of tobacco filaments wrapped by a wrapper, and often a cylindrical filter axially aligned in abutting relationship with the wrapped tobacco rod. Filters typically comprise a filter material surrounded by a plug wrap (plug wrap). The wrapped tobacco rod and the filter are joined together by a band of tipping paper wrapped around the entire length of the filter and adjacent portions of the wrapped tobacco rod. Conventional cigarettes of this type are used by lighting the end opposite the filter and burning the tobacco rod. Smokers receive mainstream smoke into their mouths by drawing on the mouth end or filter end of the cigarette.

The combustion of organic materials such as tobacco is known to produce tar and other potentially harmful byproducts. To avoid smoking tobacco, various smoking substitute systems (or "alternative smoking systems") have been proposed.

Such smoking replacement systems may form part of nicotine replacement therapy for persons who wish to stop smoking and overcome dependence on nicotine.

Smoking-substitute systems include electronic systems that allow a user to simulate the behavior of smoking by generating an aerosol (also referred to as "vapor") that is drawn into (inhaled into) the lungs through the mouth, and then exhaled. The inhaled aerosol typically carries nicotine and/or flavourings with no or less of the odour and health risks associated with traditional smoking.

In general, smoking substitute systems are intended to provide a substitute for smoking habits while providing a user with an experience and satisfaction similar to that experienced with traditional smoking and combustible tobacco products. Some smoking-substitute systems use a smoking-substitute article (also referred to as a "consumable") that is designed to resemble a conventional cigarette and is in the form of a cylinder with a mouthpiece at one end.

The popularity and use of smoking-substitute systems has grown rapidly over the past few years. Although initially marketed as an adjunct to habitual smokers who wish to quit smoking, consumers increasingly view smoking replacement systems as an adjunct to a desired lifestyle.

There are many different kinds of smoking substitute systems, each using a different smoking substitute method.

One method for a smoking substitute system is the so-called heated tobacco ("HT") method, in which tobacco (rather than "e-liquid") is heated or warmed to release steam. HT is also known as "heating not burn" ("HNB"). The tobacco may be tobacco leaf or reconstituted tobacco. The vapour may contain nicotine and/or flavourings. In the HT process, the aim is that the tobacco is heated but not combusted, i.e. the tobacco does not undergo combustion.

A typical HT smoking substitute system may include a device and a consumable. The consumable may comprise a tobacco material. The device and the consumable may be configured to be physically coupled together. For example, a consumable may be inserted into a cavity or heating chamber to establish physical contact with a heating element located in the cavity. In use, heat may be transferred to the tobacco material by a heating element of the device, wherein the flow of air through the tobacco material causes components in the tobacco material to be released as a vapour. The vapor may also be formed from a carrier in the tobacco material (which may, for example, include propylene glycol and/or vegetable glycerin) and other volatile compounds released from the tobacco. The released steam may be entrained in an air stream drawn through the tobacco.

As the vapor passes through the consumable (entrained in the airflow) from the vaporization location to an outlet (e.g., a mouthpiece) of the consumable, the vapor cools and condenses to form an aerosol for inhalation by the user. The aerosol will typically contain volatile compounds.

In HT smoking replacement systems, heating rather than burning tobacco material is believed to result in very small or lesser amounts of more harmful compounds that are typically produced during smoking. Thus, the HT process may reduce odor and/or health risks that may result from incineration, combustion, and pyrolytic degradation of tobacco.

During use, physical contact between the heating element and the tobacco material results in the formation of residue on the surface of the heating element. Therefore, HT devices typically require frequent cleaning with specialized tools to avoid build up of residue on heater surfaces. For example, a user may need to clean the heating element using a brush or a disposable solvent exchange. However, currently available HT systems may only provide access to the heating element through an opening towards the end of the chamber. Furthermore, the user may need to remove the cap covering the opening in order to gain access to the heating element prior to cleaning. Such an arrangement may be inconvenient. Thus, some users may only clean the heating element after a given number of consumables, e.g., 20, have been consumed by the device when the accumulated residue becomes detrimental to the experience, e.g., when a burn taste may be perceived.

There may be a need for improved smoking alternatives, in particular designs of HT smoking alternatives, to enhance the user experience and improve the functionality of HT smoking alternatives.

The present disclosure was devised in view of the above considerations.

Disclosure of Invention

In the most general aspect, the present invention relates to a smoking-substitute system having a smoking-substitute device with a cap movable between two positions to selectively conceal or expose a heating element of the smoking-substitute device. This may allow a user to physically access and clean the heating element in a more convenient manner, and thereby facilitate more frequent cleaning routines. The invention also relates to a tool for removing a cap from a device and thereby preventing unintentional removal of the cap. The tool may further comprise cleaning means to allow a user to clean the heating element after the cap has been removed by the tool.

According to a first aspect of the present invention, there is provided a smoking-substitute device having a body, a heating element extending from the body, and a cap removably connected to the body. The cap is movable along a longitudinal axis of the body between a first position and a second position. In the first position, the heating element is concealed in the cap, and in the second position, the heating element is at least partially exposed.

For example, in the first position, the cap may cover a window or opening at the sidewall of the body that extends into the lateral cavity that houses the heating element, thereby concealing the heating element. In the second position, the cap is moved or slid to a position where it no longer covers the opening, so that the heating element can be at least partially exposed through the opening. More specifically, the opening may be positioned adjacent to the exposed portion of the heating element so that it may provide physical access to the exposed portion of the heating element.

By providing a device comprising a cap that is movable between two positions, the heating element can be cleaned in a more convenient manner. For example, when the cap is moved to the second position, the heating element may be exposed from the side of the device through a window or opening so that the heating element can be visually inspected or cleaned through the opening. Advantageously, the user can thus perform a brief cleaning at the heating element without the need for a dedicated cleaning tool. For example, the user may simply purge through the opening or physically shake, tilt, and/or knock the device to dislodge loose debris formed on the heating element. The user may also use a tool (e.g., a brush) to physically clean the exposed portion of the heating element (e.g., the base of the heating element). Further, a smoking substitute as disclosed herein can prolong the usability of the device before deep cleaning or other similar maintenance is required.

Optional features will now be set forth. These may be used alone or in any combination with any of the aspects.

Alternatively, the cap may be retainable on the body in the second position by a retaining mechanism. Alternatively, the retention mechanism may be any suitable retention mechanism, such as an interference fit or a latching mechanism. Advantageously, the retaining mechanism may allow the cap to be positioned and retained in the second position during visual inspection and/or cleaning, and after the cap reaches the second position, the retaining mechanism may prevent further movement of the cap along the longitudinal axis, such that inadvertent removal of the cap from the body may be prevented.

Optionally, the retaining mechanism includes at least one flexible locking arm extending from the main body, and a locking protrusion disposed on the at least one locking arm. The locking protrusion may be configured to engage a groove defined in the cap to retain the cap on the body. Alternatively, the locking projection may be retained in the slot when the cap is moved between the first and second positions. Advantageously, the locking projection may slide along the slot when the cap is moved from the first position to the second position, thereby preventing relative rotation between the cap and the body.

Optionally, the body defines a transverse cavity forming an opening through the first sidewall of the body, the opening being juxtaposed with the base of the heating element to at least partially expose the base of the heating element when the cap is in the second position. For example, an opening at a side wall of the body opens into the transverse cavity. The transverse cavity may be laterally juxtaposed with the base of the heating element, or in other words, the transverse cavity may open in a direction orthogonal to the longitudinal axis of the body.

Alternatively, the lateral cavity may extend from a first sidewall of the body to a second sidewall opposite the first sidewall. In other words, the lateral cavity may be a through hole extending through the first and second sidewalls of the body. Advantageously, this may allow loose debris to be effectively expelled from the opening or through-hole.

Optionally, the locking projection is configured to prevent separation of the cap from the device by abutting an end of the slot when the cap has been moved to the second position, thereby preventing further movement of the cap. In other words, when the cap is in the second position, the locking protrusion may prevent movement of the cap by abutting an outer peripheral surface of the cap defining the groove, thereby preventing separation of the cap.

Optionally, the cap may define a cavity for receiving at least a portion of the aerosol-forming article. Alternatively, the slot may be connected to or open to the cavity.

In accordance with a second aspect of the invention, a tool for separating a cap from a body of a smoking-substitute device is disclosed. The tool may be used to detach the cap from the device or to remove the cap from the device for deep cleaning of the heating element. The tool has an unlocking device at one end and a cleaning device at the other end. The tool may provide compact and easy maintenance of the smoking-substitute device of the smoking-substitute system of the present disclosure.

The tool may have at least one unlocking arm and an unlocking protrusion provided on the unlocking arm. The unlocking protrusion may be configured to displace a corresponding locking protrusion provided on a locking arm extending from the body of the device to disengage the locking protrusion from the slot in the cap. Advantageously, the tool prevents the cap from being inadvertently removed from the body of the device.

Optionally, the tool further comprises a cleaning device for cleaning the heating element. Advantageously, the cleaning device conveniently allows a user to physically clean the heating element after removal of the cap by the tool, thereby allowing the heating element to be better cleaned, for example "deep clean" the heating element. Optionally, the cleaning device comprises at least one cleaning bristle. Advantageously, in use, the bristles may scrape across the surface of the heating element, thereby allowing the heating element to be cleaned in a more efficient manner.

Optionally, the implement further comprises a central bar, the at least one unlocking arm extending in a first direction along a longitudinal axis of the central bar, and the cleaning device extending in a second direction opposite the first direction.

Optionally, the tool comprises a collar surrounding a central rod, the neutral rod having an unlocking arm extending in a first direction, the collar being movable between an inserted position in which at least one unlocking arm is allowed to bend and an unlocked position in which the central rod prevents the unlocking arm from bending. The collar may comprise an annular collar. The collar may be concentrically positioned with the central rod.

Optionally, the implement further comprises a first cover configured to cover the at least one unlocking arm and a second cover configured to cover the cleaning device.

Optionally, the tool has an outer profile similar to the outer profile of an aerosol-forming article for a smoking-substitute system.

The device may comprise an elongate body. The end of the elongate body may be configured to engage with an aerosol-forming article. For example, the body may be configured to engage with a Heated Tobacco (HT) consumable (or a heated non-burning (HNB) consumable). The terms "heated tobacco" and "heated not to burn" are used interchangeably herein to describe consumables of the type that are heated rather than burned (or are used interchangeably to describe devices used with such consumables). The device may comprise a cavity configured to receive at least a portion of the consumable (i.e. to engage with the consumable). The aerosol-forming article may be of a type that includes an aerosol precursor (e.g. carried by an aerosol-forming substrate).

The body may define a transverse cavity extending perpendicular to a longitudinal axis of the body. The transverse cavity may extend laterally and may be located on the body such that at least a base of the heating element is juxtaposed with the transverse cavity.

Further, at least one locking arm may extend from the body. The locking arm may lock or retain the cap with the body. The locking arm may be provided with a locking protrusion at a distal end. The locking projection may extend transverse to a longitudinal axis of the body. The locking arms may be positioned such that when the cap is mounted on the body, the locking arms may engage the cap to retain the cap on the body.

The cap may be provided with a slot extending along the longitudinal axis of the body (when the cap is retained on the body), and the locking projection may be configured to engage the slot. The slot may be elongated such that the cap may be moved or slid relative to the body along the longitudinal axis of the body. The locking projection may have an abutment surface to engage an outer peripheral surface of the cap defining the groove to retain or lock the cap with the body.

The cap is movable between a first position and a second position. The cap may conceal the heating element when the cap is in the first position. When the cap is in the second position, the heating element may be at least partially exposed, for example through a window or opening at a sidewall of the body. When the heating element is partially exposed, the heating element can be visually inspected to determine if cleaning of the heating element is required. If desired, the heating element may be at least partially cleaned by blowing air through the opening or simply shaking, tilting and/or tapping the device to dislodge and remove loose debris when the cap is in the second position.

The smoking-substitute system of the present disclosure may further comprise means for separating the cap from the body. The tool may be configured to displace the locking arm to enable the cap to be separated from the body. The implement may include at least one unlocking arm. The locking arm may be adapted to engage the locking arm to displace the locking arm for separating the cap from the body. Each unlocking arm may be provided with an unlocking protrusion. The unlocking protrusion may extend in a direction perpendicular to a longitudinal axis of the unlocking arm. The unlocking protrusion may be adapted to engage the locking protrusion to displace the locking protrusion for disengaging the cap from the body.

The tool may further comprise a central rod. The collar may be concentrically positioned with the central rod. The collar may be movably placed on the rod such that the collar moves relative to the central rod along the longitudinal axis of the central rod. The unlocking arm may extend from the collar along the longitudinal axis of the central rod. The collar is movable on the central rod between an inserted position and an unlocked position. In the insertion position, the central rod may be held away from the unlocking protrusion, and the unlocking arm may be bent radially inward relative to a longitudinal axis of the central rod. In the unlocked position, the central rod may be moved adjacent the unlocking protrusion to prevent the unlocking arm from bending in a radially inward direction relative to the longitudinal axis of the central rod. The collar may be biased to move towards the insertion position using any suitable means, such as a helical spring.

The tool may be configured for insertion in the cavity. The unlocking protrusion may be configured such that when the unlocking arm is inserted in the cavity, the unlocking arm displaces the locking arm to disengage the locking arm from the cavity. The unlocking protrusion may have a size that interferes with the width of the cavity. To allow insertion of the unlocking arm in the cavity, the central rod may be spaced from the distal end of the unlocking arm in the insertion position to allow the distal end of the unlocking arm to flex radially inwardly to enable insertion of the unlocking arm with the unlocking protrusion in the cavity. Bending may be achieved when the unlocking protrusion abuts and slides against an inner surface of the cap defining the inner cavity. As shown in the illustrated embodiment, the unlocking protrusion may be provided with a tapered surface to guide the bending movement of the unlocking arm into and out of the cavity and slot.

The tool may further comprise cleaning means for cleaning the heating element. The cleaning means may be in the form of cleaning bristles. The cleaning bristles may rub on the outer surface of the heating element to clean or remove any debris or residue from the heating element.

The tool may include a first cover to cover the unlocking arm when not in use. Further, a second cover may be provided to cover the cleaning bristles when not in use.

The device may comprise a heater for heating the aerosol-forming article. The heater may comprise a heating element, which may be in the form of a rod extending from the body of the device. The heating element may extend from an end of the body configured to engage with the aerosol-forming article.

The heater (and thus the heating element) may be securely mounted to the body. The heating element may be elongate so as to define a longitudinal axis, and may for example have a substantially circular transverse profile (i.e. perpendicular to the longitudinal axis of the heating element) (i.e. the heating element may be substantially cylindrical). Alternatively, the heating element may have a rectangular transverse profile (i.e. the heater may be a "blade heater"). Alternatively, the heating element may be in the shape of a tube (i.e. the heater may be a "tubular heater"). The heating element may take other forms (e.g., the heating element may have an elliptical transverse profile). The shape and/or size (e.g., diameter) of the transverse profile of the heating element may be substantially uniform over the entire length (or substantially the entire length) of the heating element.

The heating element may be 15mm to 25mm long, for example 18mm to 20mm long, for example about 19mm long. The heating element may have a diameter of 1.5mm to 2.5mm, for example a diameter of 2mm to 2.3mm, for example a diameter of about 2.15 mm.

The heating element may be formed of ceramic. The heating element may comprise Al₂O₃A core (e.g., a ceramic core). The diameter of the core of the heating element may be 1.8mm to 2.1mm, for example 1.9mm to 2 mm. The heating element may comprise Al₂O₃E.g., an outer ceramic layer. The thickness of the outer layer may be 160 μm to 220 μm, for example 170 μm to 190 μm, for example about 180 μm. The heating element may comprise a heating track, which may extend longitudinally along the heating element. The heating track may be sandwiched between the outer layer of the heating element and the core. The heating track may comprise tungsten and/or rhenium. The heating track may have a thickness of about 20 μm.

The heating element may be located in the cavity (of the device) and may extend from the interior base of the cavity towards the opening of the cavity (e.g. along the longitudinal axis). The length of the heating element (i.e. along the longitudinal axis of the heater) may be less than the depth of the cavity. Thus, the heating element may extend within only a portion of the length of the cavity. In other words, the heating element may not extend through (or beyond) the opening of the cavity.

The heating element may be configured to be inserted in an aerosol-forming article (e.g. an HT consumable) when the aerosol-forming article is received in the cavity. In this regard, the distal end of the heating element (i.e. away from the base of the heating element mounted to the device) may comprise a taper, which may facilitate insertion of the heating element in the aerosol-forming article. The heating element may fully penetrate the aerosol-forming article when the aerosol-forming article is received in the cavity. In other words, the entire length or substantially the entire length of the heating element may be contained in the aerosol-forming article.

The length of the heating element may be less than or substantially equal to the axial length of an aerosol-forming substrate forming part of an aerosol-forming article (e.g. an HT consumable). Thus, when such an aerosol-forming article is engaged with a device, the heating element may only penetrate the aerosol-forming substrate, and not other components of the aerosol-forming article. The heating element may penetrate the aerosol-forming substrate of the aerosol-forming article over substantially the entire axial length of the aerosol-forming substrate. Thus, when penetrated by the heating element, heat may be transferred from the heating element (e.g. the peripheral surface of the heating element) to the surrounding aerosol-forming substrate. In other words, heat may be transferred radially outwards (in the case of a cylindrical heating element) or, for example, radially inwards (in the case of a tubular heater).

Where the heater is a tubular heater, the heating element of the tubular heater may surround at least a portion of the cavity. When a portion of the aerosol-forming article is received in the cavity, the heating element may surround (i.e. so as to heat) that portion of the aerosol-forming article. In particular, the heating element may surround the aerosol-forming substrate of the aerosol-forming article. In other words, the aerosol-forming substrate of the aerosol-forming article may be located adjacent to the inner surface of the (tubular) heating element when the aerosol-forming article is engaged with the device. When the heating element is activated, heat may be transferred radially inwards from the inner surface of the heating element to heat the aerosol-forming substrate.

The cavity may comprise a (e.g. circumferential) wall (or walls), and the (tubular) heating element may extend around at least a portion of the wall. In this way, the wall may be located between the inner surface of the heating element and the outer surface of the aerosol-forming article. The wall (or walls) of the cavity may be formed from a thermally conductive material (e.g. a metal) to allow heat conduction from the heating element to the aerosol-forming article. Thus, heat may be conducted from the heating element through the chamber wall (or walls) to the aerosol-forming substrate of the aerosol-forming article contained in the chamber.

In some embodiments, the device may comprise a cap disposed at an end of the body, the cap being configured to engage with the aerosol-forming article. Where the device comprises a heater having a heating element, the cap may at least partially enclose the heating element. The cap is movable between an open or second position in which access to the heating element is provided and a closed position in which the cap at least partially encloses the heating element. The cap may be slidably engaged with the body of the device and may slide between an open position and a closed position.

The cap may define at least a portion of a lumen of the device. In other words, the cavity may be defined entirely by the cap, or each of the cap and the body may define a portion of the cavity. Where the cap fully defines the cavity, the cap may include an aperture for receiving the heating element in the cavity (when the cap is in the closed position). The cap may include an opening to the cavity. The opening may be configured to receive at least a portion of an aerosol-forming article. In other words, the aerosol-forming article may be inserted through the opening and into the cavity (so as to engage with the device).

The cap may be configured such that when the aerosol-forming article is engaged with the device (e.g. received in the cavity), only a portion of the aerosol-forming article is received in the cavity. In other words, a portion of the aerosol-forming article (not housed in the cavity) may protrude from (i.e. extend beyond) the opening. This (protruding) portion of the aerosol-forming article may be a terminal (e.g. mouth) end of the aerosol-forming article which may be received in the mouth of a user for the purpose of inhaling an aerosol formed by the device.

The device may include a power source or may be connected to a power source (e.g., a power source separate from the device). The power source may be electrically connected to the heater. At this point, changing (e.g., switching) the electrical connection of the power source to the heater can affect the state of the heater. For example, switching the electrical connection of the power source to the heater may switch the heater between an on state and an off state. The power source may be an electrical storage device. For example, the power source may be a battery or a rechargeable battery (e.g., a lithium ion battery).

The device may include an input connection (e.g., a USB port, a micro-USB port, a USB-C port, etc.). The input connection may be configured for connection to an external power source, e.g. a power outlet. In some cases, the input connection may be used as a replacement for an internal power source (e.g., a battery or rechargeable battery). In other words, the input connection may be electrically connected to the heater (for providing power to the heater). Thus, in some forms, the input connection may form at least part of a power supply of the device.

Where the power source comprises a rechargeable power source (e.g., a rechargeable battery), the input connection may be used to charge and recharge the power source.

The apparatus may include a User Interface (UI). In some embodiments, the UI may include an input mechanism that receives operational commands from a user. The input mechanism of the UI may allow a user to control at least one aspect of the operation of the device. In some embodiments, the input mechanism may include a power button to switch the device between an on state and an off state.

In some embodiments, the UI may additionally or alternatively include an output mechanism to convey information to the user. In some embodiments, the output mechanism may comprise a light to indicate to a user the condition of the device (and/or aerosol-forming article). The condition of the device (and/or aerosol-forming article) indicated to the user may comprise a condition indicative of the operation of the heater. For example, the condition may include whether the heater is in an off state or an on state. In some embodiments, the UI element may include at least one of a button, a display, a touch screen, a switch, a light, and the like. For example, the output mechanism may include one or more (e.g., two, three, four, etc.) light emitting diodes ("LEDs") that may be located on the body of the device.

The device may also include a puff sensor (e.g., an airflow sensor) that forms part of the input mechanism of the UI. The suction sensor may be configured to detect the end of the aerosol-forming article (i.e., the terminal (mouth) end) that is being sucked by the user. The suction sensor may be, for example, a pressure sensor or a microphone. The puff sensor may be configured to generate a signal indicative of the puff status. The signal may be indicative of the user aspirating (aerosol from the aerosol-forming article) such that it is, for example, in the form of a binary signal. Alternatively or additionally, the signal may be indicative of a characteristic of the puff (e.g., a flow rate of the puff, a length of time of the puff, etc.).

The apparatus may comprise, or may be connected to, a controller, which may be configured to control at least one function of the apparatus. The controller may comprise, for example, a microcontroller which may be mounted on a Printed Circuit Board (PCB). The controller may further include a memory, such as a non-volatile memory. The memory may include instructions that, when implemented, may cause the controller to perform certain tasks or steps of the method. Where the device includes an input connection, the controller may be connected to the input connection.

The controller may be configured to control operation of the heater (and, for example, the heating element). Thus, the controller may be configured to control the vaporisation of an aerosol-forming portion of an aerosol-forming article engaged with the device. The controller may be configured to control a voltage applied to the heater by the power supply. For example, the controller may be configured to switch between applying all of the output voltage (of the power supply) to the heater and not applying the voltage to the heater. Alternatively or additionally, the control unit may implement more complex heater control protocols.

The apparatus may also include a voltage regulator to regulate an output voltage supplied by the power supply to form a regulated voltage. A regulated voltage may then be applied to the heater.

In some embodiments where the apparatus includes a UI, the controller may be operatively connected to one or more components of the UI. The controller may be configured to receive command signals from an input mechanism of the UI. The controller may be configured to control the heater in response to a command signal. For example, the controller may be configured to receive "on" and "off command signals from the UI and, in response, may control the heater to be in respective on or off states.

The controller may be configured to send the output signal to a component of the UI. The UI may be configured to convey information to the user via the output mechanism in response to such output signals (received from the controller). For example, where the device includes one or more LEDs, the LEDs may be operably connected to a controller. Accordingly, the controller may be configured to control illumination of the LEDs (e.g., in response to the output signals). For example, the controller may be configured to control illumination of the LEDs according to a (e.g., on or off) state of the heater.

Where the device includes a sensor (e.g., a suction/airflow sensor), the controller may be operatively connected to the sensor. The controller may be configured to receive a signal from the sensor (e.g. indicative of the status of the device and/or the engaged aerosol-forming article). The controller may be configured to control an aspect of the heater or the output mechanism based on a signal from the sensor.

The device may include a wireless interface configured to wirelessly communicate (e.g., via bluetooth (e.g., a bluetooth low energy connection) or Wi-Fi) with an external device. Similarly, the input connection may be configured as a wired connection with an external device to provide communication between the device and the external device.

The external device may be a mobile device. For example, the external device may be a smartphone, a tablet, a smart watch, or a smart car. An application (e.g., app) may be installed on an external device (e.g., a mobile device). The application may facilitate communication between the device and an external device via a wired connection or a wireless connection.

The wireless interface or the wired interface may be configured to transfer signals between the external device and a controller of the device. In this regard, the controller may control an aspect of the device in response to a signal received from an external device. Alternatively or additionally, the external device may be responsive to a signal received from the device (e.g., from a controller of the device).

In a third aspect, there is provided a system (e.g. a smoking-substitute system) comprising a device according to the first aspect and an aerosol-forming article. The aerosol-forming article may comprise an aerosol-forming substrate at an upstream end of the aerosol-forming article. The article may be in the form of a smoking substitute article, such as a Heated Tobacco (HT) consumable (also known as a heated non-combustible (HNB) consumable).

As used herein, the terms "upstream" and "downstream" are intended to refer to the direction of flow of the vapour/aerosol, i.e. the downstream end of the article/consumable is the mouth end or outlet where the aerosol exits the consumable for inhalation by the user. The upstream end of the article/consumable is the end opposite the downstream end.

The aerosol-forming substrate is capable of being heated to release at least one volatile compound that can form an aerosol. The aerosol-forming substrate may be located at an upstream end of the article/consumable.

To generate an aerosol, the aerosol-forming substrate comprises at least one volatile compound which is intended to be vaporised/aerosolized and which, when inhaled, may provide a recreational and/or medical effect to the user. Suitable chemically and/or physiologically active volatile compounds include: nicotine, cocaine for medical effects, caffeine, opioids and opioids for medical effects, theophylline and cathinone, kavalactone, mystin, beta-carboline alkaloids, salvianolic acid (salvinorin) a and any combination and/or synthetic substitute functionally equivalent to the foregoing.

The aerosol-forming substrate may comprise plant material. The plant material may comprise at least one plant material selected from the following list: amaranthus pseudonarum (Amaranthus dubus), Arctostaphylos uva-ursi (Bearberry), Argemone mexicana (Argemone mexicana), Amica (Amica), Artemisia annua (Artemisia vulgaris), Camellia sinensis (Yellow teas), California ananatis (Galea zacatechi), Canavalia gladiata (Canavalia maritima), Baybean (Baybean), Cochloa (Cercoporia mexicana, Guamura), Cestrum nocarpum (Cestrum nocarpum), Virginia glauca (Cynoglossum virginiana, Wild comfrey), Cytisussonescula (Cytisco parius), Miyaana (Amidana), Potentilla (Entada rhdii), Califolia California (California), Horserrulata (Hovenia), Leonurus chinensis (C. chinensis), Leonurus chinensis (C. japonica), Leonurus chinensis (L. japonica ), Leonurus (L. japonica, L. officinalis (C. officinalis), Leonurus (L. japonica, L. chinensis, L. officinalis (L. chinensis), Leonurus, L. officinalis (L. officinalis), Leonurus, L. officinalis (C. officinalis, L. officinalis (C. officinalis), Leonurus, L. officinalis (C. officinalis, L. roseus), L. officinalis (L. officinalis, L. officinalis (C. officinalis), L. officinalis (C. officinalis, L. roseus, L. officinalis (L. officinalis, L. officinalis), L. officinalis (L. officinalis, L. roseus, L. officinalis), L. officinalis (L. officinalis ), L. officinalis (L. officinalis ), L. officinalis (L. officinalis, L. officinalis (L. officinalis, L. Indian-tobaco, Lobelia macrophylla (Lobelia siphyllica), Schizonepeta tenuifolia (Nepeta cataria, Catnip), Nicotiana species (Nicotiana species, Tobacco), Nymphaea alba (Nymphaea alba, White Lily), Nymphaea caerulea (Nymphaea caerulea, Blue Lily), Papaver somniferum (Opium poppy) for medical effects, Passiflora incana (Passionuta incana, Passionflower), Artemisia miniata (Skyo, Indian Warriflower), Salvia madurata (Pedicularia gigantea, Indian Warrier), Pedicularia gracilistylus (Pedicularia, Elephantum's', Head), Salvia officinalis (Saliva), Scutellaria baicalensis (Scutellaria baicalensis), Scutellaria baicalensis) root (Scutellaria baicalensis), Scutellaria baicalensis (Scutellaria baicalensis), Scutellaria baicalensis) for example, Scutellaria baicalensis), Scutellaria baicalensis (Scutellaria baicalensis), Scutellaria baicalensis (Scutellaria baicalensis), Scutellaria baicalensis (Scutellaria baicalensis) for example, Scutellaria baicalensis (Scutellaria baicalensis), Scutellaria baicalensis (Scutellaria baicalensis), Scutellaria baicalensis side, Scutellaria baicalensis (Scutellaria baicalensis), Scutellaria baicalensis) for medical side, Scutellaria baicalensis (Scutellaria baicalensis), Scutellaria baicalensis (Scutellaria baicalensis), Scutellaria baicalensis) for treating), Scutellaria baicalensis (Scutellaria baicalensis), Scutellaria baicalensis (Scutellaria baicalensis), Scutellaria baicalensis (Scutellaria baicalensis), Scute, Damiana leaf (tumeradifusa, Damiana), Verbascum (Mullein), broadleaf cycas (Zamia latifolia, maconoha Brava), and any combination and/or synthetic substitute functionally equivalent to the foregoing.

The plant material may be tobacco. Any type of tobacco may be used. This includes, but is not limited to, flue-cured tobacco, burley tobacco, maryland tobacco, dark flue-cured tobacco, oriental tobacco, dark flue-cured tobacco, perque tobacao, and orchid tobacco (rustica tobacao). This also includes mixtures of the above tobaccos.

The tobacco may include one or more of tobacco leaves, stems, dust, tobacco derivatives, expanded tobacco, homogenized tobacco, cut filler, extruded tobacco, shredded tobacco, and/or reconstituted tobacco (e.g., pulp or paper reconstituted).

The aerosol-forming substrate may comprise a collected homogenized (e.g. paper/pulp reconstituted) tobacco sheet or a collected fragment/rod formed from such a sheet.

The aerosol-forming substrate may comprise one or more additives selected from humectants, flavourings, fillers, aqueous/non-aqueous solvents and binders.

The flavoring agent may be provided in solid or liquid form. It may include menthol, licorice, chocolate, fruit flavors (including, for example, citrus, cherry, etc.), vanilla, spices (e.g., ginger, cinnamon), and tobacco flavors. The flavourant may be dispersed evenly throughout the aerosol-forming substrate, or may be provided at separate locations and/or varying concentrations throughout the aerosol-forming substrate.

The aerosol-forming substrate may be formed in a substantially cylindrical shape such that the article/consumable resembles a conventional cigarette. The diameter may be 5mm to 10mm, for example 6mm to 9mm or 6mm to 8mm, for example about 7 mm. Its axial length may be 10mm to 15mm, for example 11mm to 14mm, for example about 12mm or 13 mm.

The article/consumable may include at least one filter element. There may be a final filter element at the downstream/mouth end of the article/consumable.

The or at least one filter element (e.g. a terminal filter element) may be composed of cellulose acetate or polypropylene tow. The at least one filter element (e.g., an end filter element) may be comprised of activated carbon. The at least one filter element (e.g., terminal element) may be comprised of paper. The or each filter element may be at least partially (e.g. completely) surrounded by a plug wrap (e.g. a paper-type plug wrap).

The final filter element (at the downstream end of the article/consumable) may be connected to the upstream element forming the article/consumable by surrounding a tipping layer (e.g., a tipping paper layer). The axial length of the tipping paper may be longer than the axial length of the final filter element, such that the tipping paper completely surrounds the final filter element and surrounds the wrapper of any adjacent upstream element.

In some embodiments, the article/consumable may comprise an aerosol-cooling element adapted to cool an aerosol generated by the aerosol-forming substrate (by heat exchange) prior to inhalation by a user.

The article/consumable may comprise a spacer element defining a space or cavity between the aerosol-forming substrate and the downstream end of the consumable. The spacer element may comprise a cardboard tube. The spacer element may be surrounded by a (paper) wrapping.

In a fourth aspect, there is provided a kit comprising a device according to the first aspect and a tool according to the second aspect.

The invention includes combinations of the described aspects and preferred features unless such combinations are clearly impossible or explicitly avoided.

It will be understood by those skilled in the art that features or parameters described in relation to any of the above aspects may be applicable to any other aspect unless mutually exclusive. Furthermore, any feature or parameter described herein may be applicable to any aspect and/or in combination with any other feature or parameter described herein, unless mutually exclusive.

Drawings

In order that the invention may be understood, and in order that other aspects and features of the invention may be understood, an embodiment illustrating the principles of the invention will now be discussed in more detail, with reference to the accompanying drawings, in which:

figure 1 is a schematic diagram of a smoking substitute system;

figure 2A is a front view of a first embodiment of a smoking-substitute system in which a consumable is engaged with a device;

figure 2B is a front view of the first embodiment of the smoking-substitute system with the consumable detached from the device;

figure 2C is a cross-sectional view of a consumable of a first embodiment of a smoking-substitute system;

figure 2D is a detail view of an end of the device of the first embodiment of the smoking-substitute system;

figure 2E is a cross-sectional view of the first embodiment of the smoking-substitute system; and

figure 3 is a perspective view of a first embodiment of the alternative smoking system with the cap in a second position.

Figure 4A is a cross-sectional view of a first embodiment of a smoking-substitute system with the cap in a first position.

Figure 4B is a cross-sectional view of the first embodiment of the smoking-substitute system with the cap in the second position.

Fig. 5A is a perspective view of a tool according to an embodiment.

Fig. 5B is a perspective view of the tool of fig. 5A with the first cover removed.

Fig. 5C is a perspective view of the tool of fig. 5A with the second cover removed.

Fig. 6A is a cross-sectional view of the first embodiment with the tool inserted in the cavity in the insertion position.

Fig. 6B is a cross-sectional view of the first embodiment with the tool inserted in the cavity in the unlocked position.

Figures 7(a) to 7(e) illustrate the stages of using the tool to separate the cap from the body of the smoking-substitute device of the first embodiment.

Detailed Description

Aspects and embodiments of the invention will now be discussed with reference to the figures. Other aspects and embodiments will be apparent to those skilled in the art. All documents mentioned herein are incorporated herein by reference.

Figure 1 is a schematic diagram providing a general overview of a smoking-substitute system 100. The system 100 comprises an alternative smoking device 101 and an aerosol-forming article in the form of a consumable 102, the consumable 102 comprising an aerosol precursor 103. The system is configured to vaporize the aerosol precursor (so as to form a vapor/aerosol for inhalation by the user) by heating the aerosol precursor 103.

In the illustrated system, the heater 104 forms part of the apparatus 101 and is configured to heat the aerosol precursor 103. The heat from the heater 104 vaporizes the aerosol precursor 103 to produce a vapor. The vapor then condenses to form an aerosol, which is ultimately inhaled by the user.

The system 100 also includes a power supply 105 forming part of the device 101. In other embodiments, power source 105 may be external to device 101 (but connectable to device 101). The power source 105 may be electrically connected to the heater 104 such that it is capable of supplying power to the heater 104 (i.e., for the purpose of heating the aerosol precursor 103). Thus, control of the electrical connection of the power source 105 to the heater 104 provides control of the state of the heater 104. The power source 105 may be a power storage device, such as a battery or a rechargeable battery (e.g., a lithium ion battery).

The system 100 further includes an I/O module that includes a connector 106 (e.g., in the form of a USB port, a micro-USB port, a USB-C port, etc.). The connector 106 is configured for connection to an external power source, such as an electrical outlet. Connector 106 may be used in place of power supply 105. In other words, the connector 106 may be electrically connected to the heater 104 to supply power to the heater 104. In such embodiments, the device may not include a power source, and the power source of the system may instead include the connector 106 and an external power source (the connector 106 providing an electrical connection to the external power source).

In some embodiments, where power source 104 includes a rechargeable battery, connector 106 may be used to charge and recharge power source 105.

The system 100 also includes a User Interface (UI) 107. Although not shown, the UI 107 may include an input mechanism that receives commands from a user. The input mechanism of the UI 107 allows a user to control at least one aspect of the operation of the system 100. The input mechanism may, for example, be in the form of a button, touch screen, switch, microphone, or the like.

UI 107 also includes output mechanisms that convey information to the user. The output mechanism may, for example, include a light (e.g., an LED), a display screen, a speaker, a vibration generator, and the like.

The system 100 further comprises a controller 108, the controller 108 being configured to control at least one function of the apparatus 101. In the illustrated embodiment, the controller 108 is a component of the device 101, but in other embodiments, the controller 108 may be separate from the device 101 (but connectable to the device 101). The controller 108 is configured to control the operation of the heater 104 and, for example, may be configured to control the voltage applied to the heater 104 from the power supply 105. The controller 108 may be configured to switch the supply of power to the heater 105 between an on state (in which the full output voltage of the power supply 105 is applied to the heater 104) and an off state (in which no voltage is applied to the heater 104).

Although not shown, the system 100 also includes a voltage regulator that regulates the output voltage from the power supply 105 to form a regulated voltage. A regulated voltage may then be applied to the heater 104.

In addition to being connected to heater 104, controller 108 is operatively connected to UI 107. Thus, the controller 108 may receive input signals from the input mechanisms of the UI 107. Similarly, the controller 108 may transmit the output signal to the UI 107. In response, the output mechanism of UI 107 may convey information to the user based on the output signal.

Fig. 2A and 2B illustrate a Heated Tobacco (HT) smoking substitute system 200. System 200 is an example of system 100 described with respect to fig. 1. System 200 includes HT device 201 and HT consumable 202. The description of fig. 1 above applies to the system 200 of fig. 2A and 2B, and thus will not be repeated.

The device 201 and the consumable 202 are configured such that the consumable 202 can be engaged with the device 201. Fig. 2A shows the device 201 and the consumable 202 in an engaged state, while fig. 2B shows the device 201 and the consumable 202 in a disengaged state.

The device 201 includes a body 209 and a cap 210. In use, the cap 209 engages at the end of the body 209. Although not apparent in the drawings, the cap 210 is movable relative to the body 209. In particular, the cap 210 is slidable and can slide along the longitudinal axis of the body 209.

As shown in fig. 7(e), the body 209 defines a transverse cavity 227 extending perpendicular to the longitudinal axis of the body 209. The transverse cavity 227 forms an opening through the first sidewall of the body 209 and extends from the first sidewall of the body 209 toward and around at least a portion of the heating element. The lateral cavity 227 is located on the body 209 such that at least the base 228 of the heating element is juxtaposed with the lateral cavity 227. The lateral cavity 227 extends from a first sidewall of the body 209 to and through a second sidewall opposite the first sidewall of the body 209. In other words, the lateral cavity 227 forms a through-hole extending through the body 209.

The device 201 comprises an output mechanism (forming part of the UI of the device 201) in the form of a plurality of Light Emitting Diodes (LEDs) 211, the plurality of LEDs 211 being arranged linearly along the longitudinal axis of the device 201 and on the outer surface of the body 209 of the device 201. A button 212 is also disposed on an outer surface of the body 209 of the device 201 and is axially spaced (i.e., along the longitudinal axis) from the plurality of LEDs 211.

Fig. 2C shows a detailed cross-sectional view of the consumable 202 of the system 200. The consumable 202 generally resembles a cigarette. In this regard, the consumable 202 has a generally cylindrical shape with a diameter of 7mm and an axial length of 70 mm. The consumable 202 comprises an aerosol-forming substrate 213, a terminal filter element 214, an upstream filter element 215 and a spacer element 216. In other embodiments, the consumable may further comprise a cooling element. The cooling element may be in heat exchange with the vapour formed by the aerosol-forming substrate 213 in order to cool the vapour, thereby promoting condensation of the vapour.

The aerosol-forming substrate 213 is substantially cylindrical and located at the upstream end 217 of the consumable 202 and contains the aerosol precursors of the system 200. In this regard, the aerosol-forming substrate 213 is configured to be heated by the device 201 to release vapour. The released vapor is subsequently entrained in the gas stream flowing through the aerosol-forming substrate 213. The airflow is generated by the action of the user drawing on the downstream end 218 (i.e. the terminal end or mouth) of the consumable 202.

In this embodiment, the aerosol-forming substrate 213 comprises a tobacco material, which may for example comprise any suitable part of a tobacco plant (e.g. leaf, stem, root, bark, seed and flower). The tobacco may include one or more of tobacco leaves, stems, dust, tobacco derivatives, expanded tobacco, homogenized tobacco, cut filler, extruded tobacco, shredded tobacco, and/or reconstituted tobacco (e.g., pulp or paper reconstituted). For example, the aerosol-forming substrate 213 may comprise a collected homogenized (e.g. paper/pulp reconstituted) tobacco sheet or a collected piece/rod formed from such a sheet.

To generate an aerosol, the aerosol-forming substrate 213 comprises at least one volatile compound that is intended to be vaporised/aerosolized and that may provide a recreational and/or medical effect to the user when inhaled. The aerosol-forming substrate 213 may further comprise one or more additives. For example, such additives may be in the form of humectants (e.g., propylene glycol and/or vegetable glycerin), flavoring agents, fillers, aqueous/non-aqueous solvents, and/or binders.

The final filter element 214 is also substantially cylindrical and is positioned at a downstream end 218 of the consumable 202 downstream of the aerosol-forming substrate 213. The final filter element 214 is in the form of a hollow bore filter element having a bore 219 formed therethrough (e.g., for air flow). The diameter of the hole 219 is 2 mm. The final filter element 214 is formed from a porous (e.g., monoacetate) filter material. As described above, the downstream end 218 of the consumable 202 (where the end filter 214 is located) forms a mouthpiece of the consumable 202 for the user to draw. The airflow is drawn from the upstream end 217 through the components of the consumable 202 and exits the downstream end 218. The airflow is driven by the user sucking on the downstream end 218 (i.e. the mouthpiece) of the consumable 202.

The upstream filter element 215 is located between the aerosol-forming substrate 213 and the final filter element 214, axially adjacent to the aerosol-forming substrate 213. Like the final filter 214, the upstream filter element 215 is in the form of a hollow bore filter element such that it has a bore 220 extending axially therethrough. In this manner, the upstream filter 215 may act as an airflow restrictor. The upstream filter element 215 is formed from a porous (e.g., monoacetate) filter material. The pores 220 of the upstream filter element 214 have a larger diameter (3mm) than the final filter element 214.

The spacer 216 is in the form of a cardboard tube that defines a cavity or chamber between the upstream filter element 215 and the final filter element 214. The spacers 216 serve to allow cooling and mixing of the vapour/aerosol from the aerosol-forming substrate 213. The spacer has an outer diameter of 7mm and an axial length of 14 mm.

Although not apparent from the drawings, the aerosol-forming substrate 213, upstream filter 215 and spacer 216 are surrounded by a paper wrapper. The end filter 214 is surrounded by a tipping layer that also surrounds a portion of the paper wrapper (in order to connect the end filter 214 to the remaining components of the consumable 202). The upstream filter 215 and the final filter 214 are surrounded by a further wrap in the form of a plug wrap.

Referring now to the device 201, fig. 2D illustrates a detailed view of an end of the device 201 configured to engage with the consumable 202. The cap 210 of the device 201 includes an opening 221 (more evident in fig. 2D) that opens into an interior cavity 222 defined by the cap 210. The opening 221 and cavity 222 are formed to accommodate at least a portion of the consumable 202. During engagement of the consumable 202 with the device 201, a portion of the consumable 202 is received through the opening 221 and into the cavity 222. After engagement (see fig. 2B), the downstream end 218 of the consumable 202 protrudes from the opening 221, and thus also from the device 201. The opening 221 includes a laterally disposed notch 226. These notches 226 remain open when the consumable 202 is received in the opening 221 and may, for example, be used to hold a lid to cover the end of the device 201.

Fig. 2E shows a cross-section through the central longitudinal plane of the device 201. The device 201 is shown with the consumable 202 engaged therewith. Further, as shown, at least one locking arm 229 extends from the body 209. Locking arms 229 lock or retain cap 210 with body 209. In the embodiment as illustrated, there are two locking arms 229. In embodiments, any suitable number of locking arms 229 may be provided. As shown, locking arms 229 extend substantially along the longitudinal axis of body 209. The locking arm 229 is provided at a distal end (i.e., an end portion remote from the end of the locking arm 229 connected to the main body 209) with a locking protrusion 231. The locking projection 231 extends transverse to the longitudinal axis of the body 209. The locking arms 229 are positioned such that when the cap 210 is mounted on the body 209, the locking arms 229 engage the cap 210 to retain the cap 210 on the body 209.

In the embodiment as shown, the cap 210 may be provided with a groove 232 extending along the longitudinal axis of the body 209 (when the cap 210 is retained on the body 209), and the locking protrusion 231 may be configured or positioned to engage the groove 232. The slot 232 may be elongated such that the cap 210 may move or slide relative to the body 209 along the longitudinal axis of the body 209. The locking protrusion 231 may have an abutment surface 233 to engage an outer peripheral surface 234 of the cap 210 defining the groove 232. The abutment surface 233 may block movement of the cap 210 in one direction by abutting the peripheral surface 234 to retain or lock the cap 210 with the body 209.

The cap 210 is movable between a first position and a second position. Fig. 2A, 2B and 2D, as well as fig. 4A illustrate the device 200 with the cap 210 in a first position. When the cap 210 is in the first position, the cap 210 conceals the heating element 223, as shown. In the first position, the cap 210 completely covers the lateral cavity 227 to conceal the heating element 223.

Fig. 3 and 4B illustrate the device 200 with the cap 210 in the second position. When the cap 210 is in the second position, the cap 210 at least partially exposes the heating element 223. In the second position, the cap 210 does not cover the lateral cavity 227 to partially expose the heating element 223. When the heating element 223 is partially exposed, the heating element 223 may be visually inspected to determine if the heating element 223 needs to be cleaned. If desired, the heating element 223 may be cleaned by blowing air through the opening or simply shaking, tilting and/or tapping the device to dislodge and remove loose debris when the cap 210 is in the second position. In the second position, the abutment surface 233 of the cap 210 may abut the peripheral surface 234, as discussed in the foregoing description.

The apparatus 201 includes a heater 204 that includes a heating element 223. The heater 204 forms part of the body 209 of the device 201 and is securely mounted to the body 209. In the illustrated embodiment, heater 204 is a rod-like heater in which heating element 223 has a circular transverse profile. In other embodiments, the heater may be in the form of a blade heater (e.g., a heating element having a rectangular transverse profile) or a tubular heater (e.g., a heating element having a tubular shape).

The heating element 223 of the heater 204 protrudes from the inner base of the cavity 222 along the longitudinal axis towards the opening 221. As is apparent from the drawings, the length of the heating element (i.e., along the longitudinal axis) is less than the depth of the cavity 222. In this manner, the heating element 223 does not protrude from the opening 221 or extend beyond the opening 221.

When the consumable 202 is received in the cavity 222 (as shown in fig. 2E), the heating element 223 penetrates the aerosol-forming substrate 213 of the consumable 202. In particular, the heating element 223 extends over substantially the entire axial length of the aerosol-forming substrate 213 when the heating element 223 is interposed therein. Thus, when the heater 204 is activated, heat is transferred radially from the outer circumferential surface of the heating element 223 to the aerosol-forming substrate 213.

The smoking-substitute system of the present disclosure may further include a means 235 for separating the cap 210 from the body 209. The tool 235 may be configured to displace the locking arm 229 to enable the cap 210 to be separated from the body 209. Fig. 5A, 5B, and 5C illustrate a tool 235 according to an embodiment. The implement 235 has at least one unlocking arm 230. In the embodiment as illustrated, two unlocking arms 230 are provided. The number of unlocking arms 230 may be provided as desired. In an embodiment, the number of unlocking arms 230 may correspond to the number of locking arms 229. The lock arm 230 is adapted to engage the lock arm 229 to displace the lock arm 229 for separating the cap 210 from the body 209. Each unlocking arm 230 may be provided with an unlocking protrusion 236. The unlocking protrusion 236 may extend in a direction perpendicular to the longitudinal axis of the unlocking arm 230. The unlocking protrusion 236 is adapted to engage the locking protrusion 231 to displace the locking protrusion 231 for disengaging the cap 210 from the body 209.

The tool 235 may include a central rod 237. The collar 238 may be concentrically positioned about the central rod 237. The collar 238 may be movably disposed on the rod such that the collar 238 moves relative to the central rod 237 along the longitudinal axis of the central rod 237. The unlocking arm 230 may extend from the collar 238 along the longitudinal axis of the central rod 237. The collar 238 is movable on the central rod 237 between an inserted position and an unlocked position. In the interposed position, the central rod 237 may remain away from the unlocking protrusion 236 and the unlocking arm 230 may flex radially inward relative to the longitudinal axis of the central rod 237. In fig. 5B and 6A, the collar 238 is shown in the insertion position. In the unlocked position, the central rod 237 moves in juxtaposition with the unlocking protrusion 236 to prevent the unlocking arm 230 from flexing in a radially inward direction relative to the longitudinal axis of the central rod 237. Fig. 6B illustrates the collar 238 in an unlocked position. Suitable arrangements may be provided on the collar 238 and the rod to allow and/or guide movement of the collar 238 between the inserted and unlocked positions. The collar 238 may be biased to move toward the insertion position using any suitable means, such as a coil spring.

As shown in fig. 7(a) -7 (e), the tool 235 may be configured to be inserted within the cavity 222. The unlocking protrusion 236 is configured such that when the unlocking arm 230 is inserted in the cavity 222, the unlocking arm 230 displaces the locking arm 229 to disengage the locking arms 229 and 232. In the embodiment as shown, the unlocking protrusion 236 is configured such that, when inserted in the cavity 222, the unlocking protrusion 236 enters the slot 232 defined in the cap 210 to displace the locking protrusion 231 in order to remove the cap 210 from the body 209. The unlocking protrusion 236 may have a size that interferes with the width of the cavity 222. Thus, to allow insertion of the unlocking arm 230 in the cavity 222, in the insertion position, the central rod 237 is distal to the distal end of the unlocking arm 230 to allow the distal end of the unlocking arm 230 to flex radially inwardly, thereby enabling insertion of the unlocking arm 230 with the unlocking protrusion 236 in the cavity 222. Bending may be achieved when the unlocking protrusion 236 abuts and slides against the inner surface 239 of the cap 210 defining the cavity 222. As shown in the illustrated embodiment, the unlocking protrusion 236 may be provided with a tapered surface 240 to guide the bending movement of the unlocking arm 230 into and out of the cavity 222 and slot 232. Fig. 7(a) shows the tool 235 inserted into the cavity 222 with the collar 238 in the inserted position.

At an initial stage, the tool 235 may be pushed towards the body 209 (as shown by the directional arrow in fig. 6A) to insert the unlocking arm 230 into the cavity 222 until the collar 238 abuts the opening of the cavity 222, as shown in fig. 6A and 7 (b). At this stage, as shown in fig. 6A, the unlocking arm 230 enters a slot 232 defined in the cap 210. At this stage, the unlocking protrusion 236 may not fully displace the locking protrusion 231, as is required for separating the cap 210. Further, as shown in fig. 6(c), central rod 237 may be pushed into cavity 222 to move collar 238 (relative to central rod 237) to an unlocked position. Upon pushing central rod 237, unlocking protrusions 236 may be pushed radially outward to properly enter slots 232 and occupy slots 232, as shown in fig. 6B, to displace and move locking protrusions 231 radially outward (as shown by the arrows) to remove them from slots 232. After this, as shown in fig. 7(d), the cap 210 together with the tool 235 may be pulled away from the body 209 to separate the cap 210 from the body 209. Fig. 7(e) illustrates the cap 210 completely separated from the body 209.

The tool 235 may also have a cleaning device for cleaning the heating element 223. As shown in fig. 5C, the cleaning device may be in the form of cleaning bristles 241. As shown in fig. 5C, cleaning bristles 241 can extend from the central bar 237 in a direction opposite to the direction in which the unlocking arm 230 extends. The cleaning bristles 241 may rub on the outer surface of the heating element 223 to clean or remove any debris or residue from the heating element 223.

The tool 235 may include a first cover 242 to cover the unlocking arm 230 when not in use. In addition, a second cover 243 may be provided to cover the cleaning bristles 241 when not in use. The

covers

242, 243 may be designed such that the tool 235 may be visually similar to a consumable for a smoking substitute system. Suitable means may be provided to retain the cap on the tool 235.

The apparatus 202 also includes an electronics cavity 224. A power source in the form of a rechargeable battery 205 (lithium ion battery) is located in the electronics cavity 224.

The device 202 includes a connector in the form of a USB port 206 (i.e., forming part of the I/O module of the device 201). Alternatively, the connector may be, for example, a micro-USB port or a USB-C port. The USB port 206 may be used to charge the rechargeable battery 205.

The apparatus 202 includes a controller (not shown) located in the electronics cavity 224. The controller includes a microcontroller mounted on a Printed Circuit Board (PCB). The USB port 206 is also connected to a controller 208 (i.e., to the PCB and microcontroller).

The controller 208 is configured to control at least one function of the apparatus 202. For example, the controller 208 is configured to control the operation of the heater 204. Such control of the operation of the heater 204 may be achieved by the controller switching the electrical connection of the rechargeable battery 205 to the heater 204. For example, the controller is configured to control the heater 204 in response to a user pressing the button 212. Pressing button 212 may cause the controller to allow voltage (from rechargeable battery 205) to be applied to heater 204 (to cause heating element 223 to heat).

The controller is also configured to control the LED 211 in response to (e.g., detecting) a status of the apparatus 201 or consumable 202. For example, the controller may control the LEDs to indicate whether the device 201 is in an on state or an off state (e.g., one or more LEDs may be illuminated by the controller when the device is in an on state).

The device 202 also includes an input mechanism in the form of a puff sensor 225 (i.e., in addition to the button 212). The puff sensor 225 is configured to detect user puffs (i.e., inhalations) at the downstream end 218 of the consumable 202. The suction sensor 225 may be in the form of a pressure sensor, a flow meter, or a microphone, for example. The puff sensor 225 is operably connected to the controller 208 in the electronics cavity 224 such that a signal from the puff sensor 225 indicative of the puff status (i.e., puff or not puff) forms an input to the controller 208 (and thus may be responded to by the controller 208).

The features disclosed in the foregoing description, or the following claims, or the accompanying drawings, expressed in their specific forms or in terms of a means for performing the disclosed function, or a method or process for attaining the disclosed result, as appropriate, may, separately, or in any combination of such features, be utilised for realising the invention in diverse forms thereof.

While the invention has been described in conjunction with the exemplary embodiments outlined above, many equivalent modifications and variations will be apparent to those skilled in the art when given this disclosure. Accordingly, the exemplary embodiments of the invention set forth above are considered to be illustrative and not limiting. Various changes may be made to the described embodiments without departing from the spirit and scope of the invention.

For the avoidance of any doubt, any theoretical explanation provided herein is provided for the purpose of enhancing the reader's understanding. The inventors do not wish to be bound by any of these theoretical explanations.

Any section headings used herein are for organizational purposes only and are not to be construed as limiting the subject matter described.

Throughout the specification, including the claims which follow, unless the context requires otherwise, the words "having", "including" and "comprising" and variations such as "having", "including", "comprising" and "including" are to be understood as implying inclusion of a stated integer or step or group of integers or steps but not the exclusion of any other integer or step or group of integers or steps.

It should be noted that, as used in the specification and the appended claims, the singular forms "a," "an," and "the" include plural referents unless the context clearly dictates otherwise. Ranges may be expressed herein as from "about" one particular value, and/or to "about" another particular value. When a range is so expressed, another embodiment includes from the one particular value and/or to the other particular value. Similarly, when values are expressed as approximations, by use of the antecedent "about," it will be understood that the particular value forms another embodiment. The term "about" in relation to a numerical value is optional and means, for example +/-10%.

The words "preferred" and "preferably" are used herein to refer to embodiments of the invention that may provide certain benefits under certain circumstances. However, it is to be understood that other embodiments may be preferred, under the same or different circumstances. Thus, recitation of one or more preferred embodiments does not imply or imply that other embodiments are not useful, and is not intended to exclude other embodiments from the scope of the disclosure or the claims.

Claims

1. A smoking-substitute device comprising:

a main body;

a heating element extending from the body;

a cap removably coupled to the body, the cap being movable along a longitudinal axis of the body between a first position and a second position, wherein in the first position the heating element is concealed in the cap and in the second position the heating element is at least partially exposed.

2. The smoking-substitute device of claim 1, wherein said cap is retainable on said body in said second position by a retaining mechanism.

3. The smoking-substitute device of claim 2, wherein said retaining mechanism comprises:

at least one flexible locking arm extending from the body; and

a locking protrusion disposed on the at least one locking arm, the locking protrusion configured to engage a slot defined in the cap to retain the cap on the body.

4. The smoking-substitute device of claim 3, wherein said locking projection is retained in said groove when said cap is moved between said first position and said second position.

5. The smoking-substitute device as claimed in any one of the preceding claims, wherein the body defines a transverse cavity forming an opening through a first side wall of the body, the transverse cavity being juxtaposed with a base of the heating element to at least partially expose the base of the heating element when the cap is in the second position.

6. The smoking-substitute device of claim 5, wherein said transverse cavity extends from said first sidewall of said body to and through a second sidewall opposite said first sidewall.

7. The smoking-substitute device according to any one of claims 3 to 6, wherein said locking projection is configured to prevent separation of said cap from said device by abutting an end of said slot when said cap has been moved to said second position, thereby preventing further movement of said cap.

8. The smoking-substitute device of claim 7, wherein said cap defines a cavity for receiving at least a portion of an aerosol-forming article.

9. A smoking substitute system comprising:

the smoking-substitute device of any one of claims 1 to 8;

an aerosol-forming article for use in the smoking-substitute device.