SMOKING SUBSTITUTE DEVICE/SYSTEM

Abstract

The present disclosure relates to a smoking substitute device. The smoking substitute device comprises: an elongate main body, the main body having a body length in a longitudinal dimension that is greater than a body width in a transverse dimension. The main body includes a curved portion having a curved longitudinal axis along the longitudinal dimension. The curved longitudinal axis is fixed.

Claims

1. A smoking substitute device, comprising: an elongate main body, the main body having a body length in a longitudinal dimension that is greater than a body width in a transverse dimension; wherein the main body includes a curved portion having a curved longitudinal axis extending along the longitudinal dimension, characterized in that the curved longitudinal axis is a fixed axis.

2. The smoking substitute device according to claim 1, wherein the curved portion is located between a first longitudinal end of the main body and a second, opposite, longitudinal end of the main body.

3. The smoking substitute device according to claim 2, wherein the curved portion extends along substantially the total longitudinal length of the main body.

4. A smoking substitute device according to any preceding claim wherein a radius of curvature of the curved longitudinal axis is between 1000 millimeters and 300 millimeters.

5. The smoking substitute device according to any preceding claim, the main body including an upper housing surface and an opposing lower housing surface, wherein the upper housing surface has an upper radius of curvature in the longitudinal dimension that is different from a lower radius of curvature in the longitudinal dimension of the lower housing surface.

6. The substitute smoking device according to claim 5, wherein the lower radius of curvature is larger than the upper radius of curvature.

7. The substitute smoking device according to claim 5 or 6, wherein the upper surface includes a user feedback means.

8. The substitute smoking device according to any of claims 5 to 7, wherein the lower surface includes a concave portion.

9. The substitute smoking device according to any of claims 5 to 8, wherein a total longitudinal length across the upper surface is greater than a total longitudinal length across the lower surface.

10. The substitute smoking device according to any of claims 5 to 9, wherein in a taper region of the main body the upper surface tapers towards the lower surface, the lower surface tapers towards the upper surface, or the lower and upper surfaces taper towards one another.

11. The substitute smoking device according to 10, wherein the taper region is along a transverse edge of the main body.

12. The substitute smoking device according to claim 10, wherein the taper region is at a longitudinal end of the main body.

13. A substitute smoking system, including a substitute smoking device according to any preceding claim and a consumable for engagement with the substitute smoking device.

14. A substitute smoking system according to claim 13, as dependent on claim 12, wherein the device is configured such that the consumable is for engagement with an engagement longitudinal end of the device, the engagement longitudinal end being opposite to the tapered end.

15. A charging case for a substitute smoking device according to any preceding claim, wherein the charging case includes a cavity of corresponding curvature to the main body of the device.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0198] So that further aspects and features thereof may be appreciated, embodiments will now be discussed in further detail with reference to the accompanying figures, in which:

[0199] FIG. 1A is a front schematic view of a smoking substitute system;

[0200] FIG. 1B is a front schematic view of a device of the system;

[0201] FIG. 1C is a front schematic view of a consumable of the system;

[0202] FIG. 2A is a schematic of the components of the device;

[0203] FIG. 2B is a schematic of the components of the consumable;

[0204] FIG. 3 is a section view of the consumable;

[0205] FIG. 4 is a side view of a smoking substitute device in accordance with an embodiment;

[0206] FIG. 5 is a schematic cross section of a smoking substitute device in accordance with an embodiment;

[0207] FIG. 6 is perspective view of a smoking substitute device in accordance with an embodiment;

[0208] FIG. 7 is a schematic cross section of a smoking substitute device in accordance with an embodiment;

[0209] FIG. 8A is a rear schematic view of a variant smoking substitute device;

[0210] FIG. 8B is a rear schematic view of a variant smoking substitute device;

[0211] FIG. 9A is a schematic view of a charging case;

[0212] FIG. 9B is a schematic view of a variant charging case;

[0213] FIG. 10A is a front schematic view of a smoking substitute system;

[0214] FIG. 10B is a front schematic view of a device of the system;

[0215] FIG. 10C is a front schematic view of a consumable of the system;

[0216] FIG. 11A is a front schematic view of the smoking substitute device in a first illumination state;

[0217] FIG. 11B is a front schematic view of the smoking substitute device in a second illumination state;

[0218] FIG. 11C is a front schematic view of the smoking substitute device in a third illumination state;

[0219] FIG. 12A is a front schematic view of the smoking substitute device in a variant first illumination state;

[0220] FIG. 12B is a front schematic view of the smoking substitute device in a variant second illumination state;

[0221] FIG. 12C is a front schematic view of the smoking substitute device in a variant third illumination state;

[0222] FIG. 13A is a front schematic view of a smoking substitute system;

[0223] FIG. 13B is a front schematic view of a device of the system;

[0224] FIG. 13C is a front schematic view of a consumable of the system;

[0225] FIG. 13D is a side schematic view of the consumable of the system;

[0226] FIG. 14A is a front view of a further smoking substitute system;

[0227] FIG. 14B is a rear view of the further smoking substitute system;

[0228] FIG. 15A is a front schematic view of a smoking substitute system, in a vertical orientation;

[0229] FIG. 15B is a front schematic view of a device of the system;

[0230] FIG. 15C is a front schematic view of a consumable of the system;

[0231] FIG. 15D is a front schematic view of the system in a horizontal orientation;

[0232] FIG. 16A is a front schematic view of a smoking substitute system, in a vertical orientation;

[0233] FIG. 16B is an exploded view of the smoking substitute system of the FIG. 16A embodiment;

[0234] FIG. 16C is a front schematic view of the smoking substitute system of the FIG. 16A embodiment in a horizontal orientation;

[0235] FIG. 17A is a front schematic view of a smoking substitute system; and

[0236] FIG. 17B is a side schematic view of the smoking substitute system of the FIG. 17A embodiment.

DETAILED DESCRIPTION OF THE EMBODIMENTS

[0237] Aspects and embodiments will now be discussed with reference to the accompanying figures. Further aspects and embodiments will be apparent to those skilled in the art.

[0238] FIG. 1A shows a first embodiment of a smoking substitute system 100. In this example, the smoking substitute system 100 includes a device 102 and an aerosol delivery consumable 104. The consumable 104 may alternatively be referred to as a “pod”, “cartridge” or “cartomizer”. It should be appreciated that in other examples (i.e., open systems), the device may be integral with the consumable. In such systems, a tank of the aerosol delivery system may be accessible for refilling the device.

[0239] In this example, the smoking substitute system 100 is a closed system vaping system, wherein the consumable 104 includes a sealed tank 106 and is intended for single-use only. The consumable 104 is removably engageable with the device 102 (i.e., for removal and replacement). FIG. 1A shows the smoking substitute system 100 with the device 102 physically coupled to the consumable 104, FIG. 1B shows the device 102 of the smoking substitute system 100 without the consumable 104, and FIG. 1C shows the consumable 104 of the smoking substitute system 100 without the device 102.

[0240] The device 102 and the consumable 104 are configured to be physically coupled together by pushing the consumable 104 into a cavity at an upper end 108 of the device 102, such that there is an interference fit between the device 102 and the consumable 104. In other examples, the device 102 and the consumable may be coupled by screwing one onto the other, or through a bayonet fitting.

[0241] The consumable 104 includes a mouthpiece (not shown in FIG. 1A, 1B or 1C) at an upper end 109 of the consumable 104, and one or more air inlets (not shown) in fluid communication with the mouthpiece such that air can be drawn into and through the consumable 104 when a user inhales through the mouthpiece. The tank 106 containing e-liquid is located at the lower end 111 of the consumable 104.

[0242] The tank 106 includes a window 112, which allows the amount of e-liquid in the tank 106 to be visually assessed. The device 102 includes a slot 114 so that the window 112 of the consumable 104 can be seen whilst the rest of the tank 106 is obscured from view when the consumable 104 is inserted into the cavity at the upper end 108 of the device 102.

[0243] The lower end 110 of the device 102 also includes a light 116 (e.g., an LED) located behind a small translucent cover. The light 116 may be configured to illuminate when the smoking substitute system 100 is activated. Whilst not shown, the consumable 104 may identify itself to the device 102, via an electrical interface, RFID chip, or barcode.

[0244] The lower end 110 of the device 102 also includes a USB socket 201, which is usable to charge a battery within the device 102. The USB socket can also be used to transfer data to and from the device, for example to update firmware thereon. In addition to the USB socket 201, a second charging connection, formed of contacts 202a and 202b, is provided on opposing lateral sides of the device 102. Contacts 202a and 202b electrically connect to a source of power, for example in a carry case suitable for the smoking substitute device 102. Contacts 202a and 202b may be spring-loaded, and biased to an outwards position. Alternatively, the contacts may be flat plate contacts so as to conform to the outer shape of the device.

[0245] FIGS. 8A and 8B show variant smoking substitute devices 102, where like features are indicated by like reference numerals. In FIG. 8A, the electrical contacts 302a and 302b of the second charging connection are provided on a same lateral side of the device 102. In this instance, the contacts are horizontally spaced, so as to be provided in a row extending across a width of the device (left-right in FIG. 8A).

[0246] In FIG. 8B, the electrical contacts 402a and 402b of the second charging connection are again provided on a same lateral side of the device 102. However, in this instance, the contacts are vertically spaced, so as to be provided in a row extending along a length of the device away from the first charging connection 201 (up-down in FIG. 8B).

[0247] FIGS. 2A and 2B are schematic drawings of the device (main body) 102 and consumable 104. As is apparent from FIG. 2A, the device 102 includes a power source 118, a controller 120, a memory 122, a wireless interface 124, an electrical interface 126, and, optionally, one or more additional components 128.

[0248] The power source 118 is preferably a battery, more preferably a rechargeable battery. The controller 120 may include a microprocessor, for example. The memory 122 preferably includes non-volatile memory. The memory may include instructions which, when implemented, cause the controller 120 to perform certain tasks or steps of a method.

[0249] The wireless interface 124 is preferably configured to communicate wirelessly with another device, for example a mobile device, e.g., via Bluetooth®. To this end, the wireless interface 124 could include a Bluetooth® antenna. Other wireless communication interfaces, e.g., WIFI®, are also possible. The wireless interface 124 may also be configured to communicate wirelessly with a remote server.

[0250] The electrical interface 126 of the device 102 may include one or more electrical contacts. The electrical interface 126 may be located in a base of the cavity in the upper end 108 of the device 102. When the device 102 is physically coupled to the consumable 104, the electrical interface 126 is configured to transfer electrical power from the power source 118 to the consumable 104 (i.e., upon activation of the smoking substitute system 100).

[0251] The electrical interface 126 may be configured to receive power from a charging station when the device 102 is not physically coupled to the consumable 104 and is instead coupled to the charging station.

[0252] The electrical interface 126 may also be used to identify the consumable 104 from a list of known consumables. For example, the consumable 104 may be a particular flavor and/or have a certain concentration of nicotine (which may be identified by the electrical interface 126). This can be indicated to the controller 120 of the device 102 when the consumable 104 is connected to the device 102. Additionally, or alternatively, there may be a separate communication interface provided in the device 102 and a corresponding communication interface in the consumable 104 such that, when connected, the consumable 104 can identify itself to the device 102.

[0253] The additional components 128 of the device 102 may comprise the light 116 discussed above.

[0254] The additional components 128 of the device 102 may also comprise a charging port e.g., in the form of the first charging connection and the second charging connection (e.g., USB or micro-USB port) configured to receive power from the charging station (i.e., when the power source 118 is a rechargeable battery). This may be located at the lower end 110 of the device 102.

[0255] Alternatively, in some embodiments, the electrical interface 126 discussed above may be configured to act as a charging port configured to receive power from the charging station such that a separate charging port is not required.

[0256] The additional components 128 of the device 102 may, if the power source 118 is a rechargeable battery, include a battery charging control circuit, for controlling the charging of the rechargeable battery. However, a battery charging control circuit could equally be located in the charging station (if present).

[0257] The additional components 128 of the device 102 may include a sensor, such as an airflow (i.e., puff) sensor for detecting airflow in the smoking substitute system 100, e.g., caused by a user inhaling through a mouthpiece 136 of the consumable 104. The smoking substitute system 100 may be configured to be activated when airflow is detected by the airflow sensor. This sensor could alternatively be included in the consumable 104. The airflow sensor can be used to determine, for example, how heavily a user draws on the mouthpiece or how many times a user draws on the mouthpiece in a particular time period.

[0258] The additional components 128 of the device 102 may include a user input, e.g., a button. The smoking substitute system 100 may be configured to be activated when a user interacts with the user input (e.g., presses the button). This provides an alternative to the airflow sensor as a mechanism for activating the smoking substitute system 100.

[0259] The additional components 128 of the device 102 further comprise a means for delivering a haptic feedback to a user. This haptic feedback may be, for example, a vibration or sequence of vibrations. The means for delivering a haptic feedback may be a vibration generator, which may comprise an electric motor having an eccentrically mounted weight on a shaft. Other means for vibration generation are also possible, including, for example, a linear actuator or a piezo-electric element. The haptic feedback may be generated as a sequence of activations/vibrations of the vibration generator or other means for delivering a haptic feedback. The means for delivering a haptic feedback may be controlled by the controller 120. The specific sequence of vibrations or activations forming the haptic feedback may be configurable or selectable by a user of the device 102, and one or more sequences of activations or vibrations may be stored in a memory, such as the memory 122 of the device 102. The means for delivering a haptic feedback may be switchable between an operating (ON) state wherein the haptic feedback is delivered and a non-operating (OFF) state wherein the haptic feedback is not delivered.

[0260] The haptic feedback is generated in response to a physical stimulus from a user of the device 102, in particular a movement of the device 102. In some embodiments, the physical stimulus from the user may be a tap or shake of the device, a sequence of taps or shakes, or a movement of the device to a particular orientation or along a specified motion path. The movement may be detectable or measurable by a movement detector such as one or more tilt switches and/or one or more accelerometers and/or one or more g-sensors. Such a physical stimulus may be detectable even without direct contact between the user and the device 102. For example, even if the device 102 is located in a pocket of an article of clothing worn by the user, or in a bag carried by the user, and the user can deliver the physical stimulus by tapping the device through the material constituting the article of clothing or the bag. This can therefore allow the user to determine whether or not the device 102 is present without needing to remove it from the pocket or bag.

[0261] The haptic feedback is not limited to an indication that the device 102 is present. For example, the haptic feedback may be used, for example, to indicate that the device 102 is active (i.e., ready to be used to generate a vapor), to distinguish between devices 102 (i.e., generate a user-specific vibration sequence), or to be used as a distraction aid. The device 102 may be able to detect or identify multiple different movements, such as tap or shake sequences. Each movement identified as a predetermined movement may be configured or configurable to generate a different response. For example, tapping the device 102 may cause a first haptic feedback to be generated (e.g., to indicate that the device is present), tilting the device 102 (as a user might while picking up the device) might cause a second haptic feedback to be generated (e.g., a feedback to indicate that the device is ready to operate), shaking the device 102 might generate a third haptic feedback response to be generated (e.g., a device identifying user-specific vibration sequence). A number of taps or shakes of the device may trigger a corresponding number of activations of the haptic feedback generator, which may be the same as the number of tapes or shakes. For example, a double-tap of the device 102 may trigger a sequence of two activations of the haptic feedback generator. Other movement sequences and activation sequences are also possible.

[0262] The haptic feedback is generated by a haptic feedback unit, which includes at least the means for generating the vibration, and may additionally comprise the movement detector, and/or a haptic feedback unit controller. Alternatively, the haptic feedback unit may be controlled by the controller 120 of the device 102. The movement detector may be separate from the haptic feedback unit, and may act as an input to the haptic feedback unit or to the controller 120.

[0263] The haptic feedback operating state and/or response sequence may be configurable by use of a switch or other control means provided in the device 102. Additionally, or alternatively, the haptic feedback operating state and/or response sequence may be configurable by a signal from an external device received through the wireless interface 124.

[0264] As shown in FIG. 2B, the consumable 104 includes the tank 106, an electrical interface 130, a vaporizer 132, one or more air inlets 134, a mouthpiece 136, and one or more additional components 138.

[0265] The electrical interface 130 of the consumable 104 may include one or more electrical contacts. The electrical interface 126 of the device 102 and an electrical interface 130 of the consumable 104 are configured to contact each other and thereby electrically couple the device 102 to the consumable 104 when the lower end 111 of the consumable 104 is inserted into the upper end 108 of the device 102 (as shown in FIG. 1A). In this way, electrical energy (e.g., in the form of an electrical current) is able to be supplied from the power source 118 in the device 102 to the vaporizer 132 in the consumable 104.

[0266] The vaporizer 132 is configured to heat and vaporize e-liquid contained in the tank 106 using electrical energy supplied from the power source 118. As will be described further below, the vaporizer 132 includes a heating filament and a wick. The wick draws e-liquid from the tank 106 and the heating filament heats the e-liquid to vaporize the e-liquid.

[0267] The one or more air inlets 134 are preferably configured to allow air to be drawn into the smoking substitute system 100, when a user inhales through the mouthpiece 136. When the consumable 104 is physically coupled to the device 102, the air inlets 134 receive air, which flows to the air inlets 134 along a gap between the device 102 and the lower end 111 of the consumable 104.

[0268] In operation, a user activates the smoking substitute system 100, e.g., through interaction with a user input forming part of the device 102 or by inhaling through the mouthpiece 136 as described above. Upon activation, the controller 120 may supply electrical energy from the power source 118 to the vaporizer 132 (via electrical interfaces 126, 130), which may cause the vaporizer 132 to heat e-liquid drawn from the tank 106 to produce a vapor which is inhaled by a user through the mouthpiece 136.

[0269] An example of one of the one or more additional components 138 of the consumable 104 is an interface for obtaining an identifier of the consumable 104. As discussed above, this interface may be, for example, an RFID reader, a barcode, a QR code reader, or an electronic interface which is able to identify the consumable. The consumable 104 may, therefore include any one or more of an RFID chip, a barcode or QR code, or memory within which is an identifier and which can be interrogated via the electronic interface in the device 102.

[0270] It should be appreciated that the smoking substitute system 100 shown in FIGS. 1A to 2B is just one exemplary implementation of a smoking substitute system. For example, the system could otherwise be in the form of an entirely disposable (single-use) system or an open system in which the tank is refillable (rather than replaceable).

[0271] FIG. 3 is a section view of the consumable 104 described above. The consumable 104 comprises a tank 106 for storing e-liquid, a mouthpiece 136 and a passage 140 extending along a longitudinal axis of the consumable 104. In the illustrated embodiment the passage 140 is in the form of a tube having a substantially circular transverse cross-section (i.e., transverse to the longitudinal axis). The tank 106 surrounds the passage 140, such that the passage 140 extends centrally through the tank 106.

[0272] A tank housing 142 of the tank 106 defines an outer casing of the consumable 104, whilst a passage wall 144 defines the passage 140. The tank housing 142 extends from the lower end 111 of the consumable 104 to the mouthpiece 136 at the upper end 109 of the consumable 104. At the junction between the mouthpiece 136 and the tank housing 142, the mouthpiece 136 is wider than the tank housing 142, so as to define a lip 146 that overhangs the tank housing 142. This lip 146 acts as a stop feature when the consumable 104 is inserted into the device 102 (i.e., by contact with an upper edge of the device 102).

[0273] The tank 106, the passage 140 and the mouthpiece 136 are integrally formed with each other so as to form a single unitary component and may e.g., be formed by way of an injection molding process. Such a component may be formed of a thermoplastic material such as polypropylene.

[0274] The mouthpiece 136 comprises a mouthpiece aperture 148 defining an outlet of the passage 140. The vaporizer 132 is fluidly connected to the mouthpiece aperture 148 and is located in a vaporizing chamber 156 of the consumable 104. The vaporizing chamber 156 is downstream of the inlet 134 of the consumable 104 and is fluidly connected to the mouthpiece aperture 148 (i.e., outlet) by the passage 140.

[0275] The vaporizer 132 comprises a porous wick 150 and a heater filament 152 coiled around the porous wick 150. The wick 150 extends transversely across the chamber vaporizing 156 between sidewalls of the chamber 156 which form part of an inner sleeve 154 of an insert 158 that defines the lower end 111 of the consumable 104 that connects with the device 102. The insert 158 is inserted into an open lower end of the tank 106 so as to seal against the tank housing 142.

[0276] In this way, the inner sleeve 154 projects into the tank 106 and seals with the passage 140 (around the passage wall 144) so as to separate the vaporizing chamber 156 from the e-liquid in the tank 106. Ends of the wick 150 project through apertures in the inner sleeve 154 and into the tank 106 so as to be in contact with the e-liquid in the tank 106. In this way, e-liquid is transported along the wick 150 (e.g., by capillary action) to a central portion of the wick 150 that is exposed to airflow through the vaporizing chamber 156. The transported e-liquid is heated by the heater filament 152 (when activated e.g., by detection of inhalation), which causes the e-liquid to be vaporized and to be entrained in air flowing past the wick 150. This vaporized liquid may cool to form an aerosol in the passage 140, which may then be inhaled by a user.

[0277] FIG. 9A shows a charging case 500 for use with the smoking substitute device discussed above. The charging case has a cavity 501, with an aperture located in one surface of the charging case through which the smoking substitute device can be introduced. Within the cavity, on two lateral sides of the internal surface thereof, are electrical connectors 502a and 502b. These electrically connect with connectors 202a and 202b on device 103. Wires 503a and 503b are connected to the connectors 502a and 502b, and electrically interconnect them to battery 504 (which may contain charging electronics, for example voltage regulators and/or processors for controlling the charging process).

[0278] Electrical connectors 502a and 502b may be pogo pin connectors, in that they may be biased towards the interior of the cavity 501 so as to ensure a reliable connection between themselves and the corresponding connectors on device 103.

[0279] FIG. 9B shows a variant charging case 600. Where case 600 shares features with case 500, like features are indicated by like reference numerals. In contrast to the case 500 shown in FIG. 5A, electrical connectors 602a and 602b are located on a same lateral side of the interior of the cavity 501.

[0280] FIG. 4 illustrates an embodiment where the smoking substitute device 102 is engaged with a consumable 104 at the upper end 108 of the device 200. The consumable 104 includes the mouthpiece 136. The device 200 includes a charging port (e.g., USB port) at the lower end 110 of the device 200. The device 200 may further include the secondary charging connections discussed previously, on a same lateral side of the device (and so not visible in this view).

[0281] The device 102 is generally defined, in terms of device shape, by a main body housing 200. The main body housing 200 houses a number of the device components. The particular, the main body housing 200 houses the battery for powering operations of the device 102 and supplying electrical power to the consumable 104. The battery may be a generally straight (in the longitudinal dimension) elongate rectangular shape. In some embodiments, the longitudinal length of the battery may be between 50 millimeters and 100 millimeters.

[0282] The main body housing 200 receives a portion of the consumable 104 to thereby engage with the consumable 104.

[0283] The main body housing 200 is generally elongate—“long and thin”. The longitudinal dimension is orientated along the longest axis of the main body housing 200. The main body housing 200 has a total length in the longitudinal dimension. The total length may be between 5 and 20 centimeters, more preferably between 10 centimeters and 20 centimeters.

[0284] Perpendicular to the longitudinal dimension is the transverse dimension (“into the page” in FIG. 4). In a plane in the transverse dimension, the main body device 200 has a depth 204 and a width (which is into/out of the page in respect of FIG. 5). In some embodiments, the width of the main body housing 200 is larger than the main body depth 204. In other words, in some embodiments, the transverse cross sectional shape of the main body housing 200 is elongate. In some embodiments the main body depth 204 of the main body housing 200 varies along the longitudinal dimension.

[0285] In some embodiments, as in that of FIG. 4, the transverse cross-sectional shape is generally constant along at least a portion of the length of the main body housing 200.

[0286] The main body housing 200 is generally curved along its length. That is, a hypothetical line 203 (see FIG. 5) passing through the centroid of the main body housing 200, aligned with the longitudinal axis of the main body housing 200, is curved and fixed i.e., has only a single, unmovable configuration. In the embodiment the main body housing 200 is curved along the full length. However, in some embodiments, the main body housing 200 is only curved in a curved section or portion of the longitudinal length of the main body housing 200 between the upper 108 and lower end 110. In such embodiments, longitudinally outside of the curved portion, the main body housing 200 may be substantially straight.

[0287] The radius of curvature of the main body housing 200 of the embodiment of FIG. 4 is 550 millimeters. However, in some embodiments the radius of curvature of the main body housing 200 is different. In some embodiments, the radius of curvature of the main body housing is between 3000 millimeters and 100 millimeters, preferably between 2000 millimeters and 200 millimeters, more preferably between 1000 and 200 millimeters, more preferably between 800 and 300 millimeters.

[0288] In some embodiments the radius of curvature of the main body housing 200 is substantially constant along the length of the main body housing 200. In some embodiments the radius of curvature of the main body housing 200 varies along the length of the main body housing 200.

[0289] When placed on a flat surface, e.g., a table top, the curved main body housing 200 therefore bows upward away from the table surface. This permits the user to easily grasp the device 102, relative to a device having a straight main body housing. The device 102 is also ergonomically beneficial, the curvature of the device allowing for more comfortable compliance with the curvature of a user's body, for example the upper leg when placed in a pocket.

[0290] FIG. 5 shows a schematic illustration of a longitudinal cross-section of a device 102 according to an embodiment. The device 102 is shown engaged with a consumable 104. The main body housing 200 is illustrated with the hypothetical line 203 passing along the longitudinal dimension. This line 203 illustrates the curvature of the main body housing 200.

[0291] The main body housing 200 has an upper surface 201 and oppositely directed lower surface 202. The lower surface 202 has a lower surface radius of curvature in the longitudinal dimension which is larger than the radius of curvature in the longitudinal dimension of the upper surface 203. In other words, the curvature of the lower surface 202 is less severe than the upper surface 201. This forms a main body housing 200 that terminally tapers at each longitudinal end, noting that at one end of the housing 200, the consumable 104 is engaged, so it is consumable 104 that includes the terminal taper of the combined consumable 104 and device 102. In some embodiments, the upper surface 201 and/or lower surface 202 taper together separately from their longitudinal curvature as defined above, and the terminal taper is not resultant from the curvature of the upper 201 and lower surface 202 as defined above.

[0292] In some embodiments, the longitudinal distance across the upper surface 201 is longer than the longitudinal distance across the lower surface 202. This may permit a user to engage with a terminal transverse edge of the upper surface 201 more easily, since it may slightly overhang the lower surface 202 making the device 102 easier to pick up.

[0293] In some embodiments, the device 102 includes a user feedback means, e.g., a visual user output indicator, which may be located on the upper surface 201. The user feedback means may include one or more lights.

[0294] FIG. 6 shows a perspective view of the device 102 shown engaged with the consumable 104 at the upper end 108. The device 102 includes a charging port at the lower end 110.

[0295] The upper surface 201 of the main body housing 200 is curved in the transverse dimension. The lower surface 202 of the main body housing 200 is curved in the transverse dimension. The curvatures of the upper surface 201 and lower surface 202 are of the opposite sense to one another. Both upper and lower surfaces 201, 202 are therefore convex in the transverse dimension. The radius of curvature of the upper surface 201 in the transverse dimension is greater than half the depth of the main body housing 200. The radius of curvature of the lower surface 202 in the transverse dimension is greater than half the depth of the main body housing 200. This leads to a mandorla-, eye-, or lemon-shaped transverse cross sectional shape of the main body housing 200.

[0296] In some embodiments the upper surface 201 and the lower surface 202 are curved in the same sense, which leads to one surface being convex and the other being concave.

[0297] The upper surface 201 and lower surface 202 meet at two transverse edges 205. The transverse edges 205 have a radius of curvature that is significantly smaller than the radius of curvature of either the upper 201 or lower surface 202. This leads to the transverse edges 205 being substantially “pointed” or “sharp”. The transverse edges 205 may have a radius of curvature in the transverse dimension of less than 10 millimeters, preferably less than 5 millimeters, preferably less than 2 millimeters, preferably less than 1 millimeter.

[0298] As illustrated in FIG. 6, the transverse edges 205 extend substantially the full longitudinal length of the main body housing 200. However, in some embodiments, the transverse edges 205 may only extend along a longitudinal portion of the main body housing 200. The presence of the edges 205, relative to the upper surface 201 and the lower surface 202, permit the user to easily grasp the device. This is also true regardless of which of the upper or lower surface faces downwards towards a surface on which the device sits (e.g., a table-top). Such a main body housing 200 shape is also ergonomically beneficial, and may lead to comfortable positioning in hand, for example because the transverse edges locate at the joints of the fingers.

[0299] The main body housing 200 is formed from upper and lower housing sections 206, 207. The upper and lower housing sections 206, 207 are interconnected to one another (for examples, via a snap fit or by gluing) along the transverse edges 205. Such a configuration may improve the ease of manufacture of the device 102. In some embodiments the main body housing 200 is formed in an extrusion process.

[0300] The upper surface 201 of the main body housing 200 may include a user feedback means, for example one or more lights. The lower surface 202 of the main body housing 200 may include a window or notch through which a liquid level in the consumable 104 may be assessed by a user. The lower surface 202 may include a charging means. The charging means may include a pair of electrical contacts engagement with a corresponding pair of charging contacts. The charging contacts may, for example, be part of a charge case or dock.

[0301] A user feedback means may be provided along one or both of the transverse edges 205. In some embodiments the user feedback means is elongate along the longitudinal dimension. In some embodiments, the user feedback means is a visual feedback means. For example, an elongate light (or sequence of lights) may be provided that runs along at least a longitudinal portion of one of the edges 205. An elongate user feedback means may mean that it is less likely to be inadvertently obscured when the device 102 is grasped by a user.

[0302] FIG. 7 illustrates a schematic transverse cross section through the device 102 of FIG. 6, in accordance with an embodiment. The upper surface 201 and lower surface 202 are shown meeting at the transverse edges 205 on either side of the main body housing 200. The radius of curvature of the upper surface 201 is larger than half the main body depth 204 of the main body 200. The radius of curvature of the lower surface 202 is larger than half the main body depth 204 of the main body 200. This leads to the mandorla-, eye- or lemon-shaped transverse cross sectional shape of the main body housing 200. The radius of curvature in the transverse dimension of the upper surface 201 is equal to the radius of curvature in the transverse dimension of the lower surface 202. As described above, in some embodiments, the radius of curvature of the upper surface 201 is different from the radius of curvature of the lower surface 202.

[0303] The radius of curvature of the upper surface 201 may be between 10 millimeters and 50 millimeters, preferably between 10 and 40 millimeters, preferably between 10 millimeters and 30 millimeters, preferably been 10 and 20 millimeters, more preferably between 10 millimeters and 15 millimeters, more preferably substantially 13.5 millimeters.

[0304] It is noted that the longitudinal curvature described in respect of FIGS. 4 and 5 is independently applicable to a device from the curvature described in respect of FIGS. 6 and 7. In some embodiments, the device is curved in both respects.

[0305] The system shown in FIGS. 10A-10C is similar to that shown in FIGS. 1A-1C and like references numerals are used for like features.

[0306] The device 102 also includes a processor/controller (not shown in FIGS. 10A-10C), and an illumination region 116, indicated by the dashed line. Below the illumination region, within the main body of the device 102 is at least one source of light (and in some examples, a plurality of sources of light) located behind a single translucent cover. The source(s) of light may be, in this example, one or more light emitting diodes. The source(s) of light may be configured to illuminate when the smoking substitute system 100 is activated. Whilst not shown, the consumable 104 may identify itself to the device 102, via an electrical interface, RFID chip, or barcode. Each source of light may be, for example, a group of LEDs operable in a combination of colors. The illumination region may be formed of a diffusing material, for example polycarbonate, such that light emitted from the LEDs is diffused as it is transmitted through the illumination region. Additionally, or alternatively, the illumination region may have a thickness which is thinner than the remaining main body of the device. Further additionally, or alternatively, a liquid crystal display (LCD) may be provided in the illumination region and may be behind the diffusion material (or alternatively, may be present as an outermost surface of the main body). In some examples, the device 102 has a mandorla-shaped cross-section, also referred to as an eye-shaped cross-section. The cross-section may have the shape resulting from the partial overlap of two circles having the substantially the same radii. In these examples, the illumination region 116 is present on the larger surface of the main body, and components supporting the illumination region (wires etc. for the LEDs) may be positioned within the thinner void region of the interior surface (i.e., towards the lateral sides thereof).

[0307] FIG. 11A shows the device 102 in a first illuminate state. Here, the processor has identified that the device is undergoing a charging operation (e.g., the power source is receiving and storing power). The processor causes a varying area of the illumination region 116 to be illuminated. In FIG. 11A a small area 202a of the illumination region is illuminated. Next, so as to convey the idea of the power source being filled with power, a larger area 202b of the illumination region is illuminated. Finally, when the power source is filled with power, the largest area 202c of the illumination region is illuminated.

[0308] The processor is configured to achieve this variation in the illuminated area by control of one or both of: (i) an intensity of the LEDs; and (ii) a number of LEDs illuminated.

[0309] The sequence shown in FIG. 11A-11C is an example of a possible sequence using the illumination region. For example, in alternative sequence performed using the same device, a bar decreases in height in a manner commensurate with the depletion of the battery or consumable 104. In a further alternative sequence, the connection of a valid consumable 104 to the main body 102 may cause the illumination region to undergo a sequence of illumination states to indicate that the connection has been made successfully. Further alternatively, the processor may be configured to detect an inhalation event (e.g., through a pressure sensor) and to cause the illumination region to mimic a breath sequence by pulsating the illumination region. For example, the area of the illumination region illuminated may increase in proportion with an inhalation time, and decrease in proportion to an exhalation time.

[0310] In the sequences shown above, the illuminated area 202a-c is contiguous. However, the processor may be configured to increase and/or decrease the illuminated area by illuminating discrete portions of the illumination region, referred to as sub-illumination regions. An example of the same sequence of FIGS. 11A-11C, but with discrete illumination areas, is shown in FIGS. 12A-2C. In the example shown in FIGS. 12A-12C, each sub-illumination region is separated from the adjacent sub-illumination regions by an optically opaque divider.

[0311] The system shown in FIGS. 13A-13C is similar to that shown in FIGS. 1A-1C and like references numerals are used for like features.

[0312] A wall of the tank 106 includes a translucent portion in the form of a window 112, which allows the amount of e-liquid 103 in the tank 106 to be visually assessed. An aperture 114 is formed in a wall of the housing 101 of the device 102 so that the window 112 of the consumable 104 can be seen whilst the rest of the tank 106 is obscured from view when the consumable 104 is inserted into the cavity at the upper end 108 of the device 102.

[0313] The aperture 114 is obround, so as to be elongate and so as to define an elongate axis. The aperture has a width (transverse to the elongate axis) of about 4 mm, and a length (parallel to the elongate axis) of about 15 mm. The aperture 114 is oriented such that its elongate axis is generally parallel with a longitudinal axis of the device (in the figures, this is in the vertical direction). The aperture 114 is proximate to (but spaced from) an edge 105 of the wall of the housing 101 (in which the aperture is formed).

[0314] As mentioned above, when the consumable 104 is received in the cavity of the device 102, the window 112 aligns with the aperture 114 in the housing 101, such that the e-liquid 103 in the tank 106 is visible. As is particularly apparent from FIG. 13D, the window 112 defines a raised (or protruding portion) of the tank 106. In this way, and as will now be described, the window 112 acts as a retaining portion of the consumable 104 for retaining the consumable 104 in the cavity of the device 102.

[0315] The window 112 is arranged on the tank 106 such that, when the consumable 104 is inserted into the cavity of the device 102, the window 112 aligns with the aperture 114 formed in the housing 101 and is thus received in the aperture 114. The window 112 has the same obround shape as the aperture 114 formed in the housing 101 such that it fills the aperture 114 in this engaged position and restricts movement of the consumable 104 out of the cavity (i.e., by contact with the edge of the aperture 114).

[0316] Whilst not immediately apparent from the figures, the height of the window 112 (i.e., from the wall of the tank 106 from which it protrudes) is substantially the same as the depth of the aperture 114 in the housing 101. Thus, when the window 112 is received in the aperture 114, the distal surface 107 of the window 112 is generally flush with an outer surface of the housing 101.

[0317] To facilitate snap-engagement between the consumable 104 and the device 102, the window 112 and the housing 101 are configured to be deformable. Thus, as the consumable 104 is inserted into the device 102, the window 112 and the housing 101 flex (i.e., deflect) so as to allow the consumable 104 to move into the cavity (i.e., which would otherwise be prevented by the protrusion of window 112 from the consumable 104).

[0318] In order to provide this deflection in a gradual manner, the window 112 comprises a ramp surface, which in this case is a sloped sidewall 113 extending about the distal end surface 107 (i.e., connecting the distal end surface 107 to the outer surface of the consumable 104). When the consumable 104 is moved towards the cavity of the device 102, the ramp surface 113 engages the upper edge 105 of the housing 101. Due to the sloped nature of the ramp surface 113, as the consumable 104 is moved into the cavity, the contact between the ramp surface 113 and the edge 105 causes gradual deflection of the edge 105 and/or the window 112 to allow the consumable 102 to be inserted into the cavity. When the window 112 reaches the aperture 114 it snaps into engagement with the aperture 114. The ramp surface may similarly facilitate removal of the consumable 102 from the cavity (i.e., by contact with an edge of the aperture 114).

[0319] FIGS. 14A and 14B illustrate a variation of the embodiment shown in FIGS. 13A to 13D and therefore corresponding reference numerals have been used to identify similar features. FIG. 14A shows a front view of a smoking substitute system 100′ and FIG. 14B shows a rear view of the smoking substitute system 100′.

[0320] As is particularly apparent from FIG. 14B, the smoking substitute system 100′ differs from that described above in that the housing 101 comprises first 114a and second 114b apertures formed therein. The first aperture 114a is formed in a front wall 115 of the housing 101 and the second aperture 114b is formed in a rear wall 117 of the housing.

[0321] Both of the apertures 114a, 114b have an elongate obround shape, but they are oriented such that an elongate axis of the second aperture 114b is orthogonal to an elongate axis of the first aperture 114a. In particular, as shown on the page, the elongate axis of the first aperture 114a is oriented vertically, and the elongate axis of the second aperture 114b is oriented horizontally. As may be appreciated, this may allow the assessment of the level of e-liquid 103 in the consumable 104 for two orientations of the device. That is, the first aperture 114a may be configured for viewing the level of e-liquid 103 when the system 100′ is oriented vertically (e.g., when handheld), and the second aperture may be configured for viewing the level of e-liquid 103 when the system 100′ is oriented horizontally.

[0322] Whilst not apparent from the figures, in this embodiment, the tank of the consumable 104 is fully translucent (i.e., so as not to have isolated translucent portions).

[0323] One further (minor) difference between this system 100′ and the system described above with respect to FIG. 1A to 1D is that instead of a single LED, the present system 100′ includes two separate (longitudinally spaced) circular LEDs.

[0324] The system shown in FIGS. 15A-15C is similar to that shown in FIGS. 1A-1C and like references numerals are used for like features.

[0325] FIG. 15A shows the smoking substitute system 100 with the device 102 physically coupled to the consumable 104 and in a vertical orientation, FIG. 15B shows the device 102 of the smoking substitute system 100 without the consumable 104, and FIG. 15C shows the consumable 104 of the smoking substitute system 100 without the device 102. FIG. 15D shows the device and consumable coupled, but in a horizontal orientation.

[0326] The device 102 comprises a device housing 101 and the consumable 104 comprises a consumable housing 129, which together define a system housing 131. The device housing 101 defines a cavity (not shown in the present figures) for receipt of a tank 106 of the consumable 104, which forms part of the consumable housing 129. The device 102 and the consumable 104 are configured to be physically coupled together by pushing the consumable 104 into the cavity at an upper end 108 of the housing 101, such that there is an interference fit between the device 102 and the consumable 104. In other examples, the device 102 and the consumable may be coupled by screwing one onto the other, or through a bayonet fitting.

[0327] The consumable 104 includes a mouthpiece (not shown in FIG. 15A to 15D) at an upper end 109 of the consumable 104, and one or more air inlets (not shown) in fluid communication with the mouthpiece such that air can be drawn into and through the consumable 104 when a user inhales through the mouthpiece. The tank 106 contains an aerosol precursor in the form of an e-liquid 103 and is located at the lower end 111 of the consumable 104.

[0328] As is particularly apparent from FIG. 15A, the device housing 101 includes a single viewing region in the form of a window 105 (i.e., defined by an aperture formed in the device housing 101). This window 105 allows the amount of e-liquid 103 in the tank 106 to be visually assessed. As is evident from FIG. 1C, the walls of the tank 106 are translucent to permit the e-liquid 103 to be viewed through the window 105. It is noted, however, that the only portion of the tank 106 visible is that which is aligned with the window 105, because the remaining portions of the tank 106 are obscured by the wall of the housing 101 of the device 102 defining the cavity. As is discussed above, this may limit the amount of light received by the e-liquid 103.

[0329] The window 105 formed in the device housing 101 is elongate (obround) so as to define an elongate axis, and is oriented such that the elongate axis is oblique (i.e., neither perpendicular nor parallel) with respect to a longitudinal axis of the device housing 101 (and of the system housing 131). In other words, the window 105 is slanted with respect to the longitudinal axis of the device housing 101. This means that the window 105 extends both longitudinally and transversely.

[0330] This orientation of the window 105 allows the level of e-liquid 103 to be viewed for both a vertical orientation (FIG. 15A) of the longitudinal axis of the device housing 101, and a horizontal orientation (FIG. 15D) of the device housing 101. In particular, the longitudinal extension of the window 105 allows assessment of the level in the vertical orientation (FIG. 15A) and the transverse extension of the window 105 allows assessment of the level in the horizontal orientation (FIG. 15D). Thus, a user may, for example, view the e-liquid 103 level when handheld (e.g., vertical) and when resting on a surface (e.g., horizontal).

[0331] In both orientations, the meniscus 107 of the e-liquid 103 extends transversely with respect to the elongate axis of the window 105. This ensures that a range of levels can be measured (i.e., along the elongate axis) as the e-liquid 103 is depleted, whilst minimizing the amount of light entering the e-liquid 103 (i.e., by only providing a strip/elongate shape through which the e-liquid 103 can be viewed).

The smoking substitute system 200 shown in FIGS. 16A to 16C shares many of the same features of the system described above, and for that reason, corresponding reference numerals have been used (albeit, with the first digit replaced to represent the different embodiment).

[0332] This embodiment differs from that previously described in that the system 200 comprises two elongate viewing regions (rather than a single region) in the form of first 214a and second 214b elongate window portions of a window 205. The second window portion 214b is oriented such that its elongate axis extends transversely with respect to a longitudinal axis of the device housing 201. In particular, the second window portion 214b forms a loop that extends about the system housing 231 (i.e., about the longitudinal axis of the hosing 201). The first window portion 214a is oriented such that its elongate axis extends longitudinally (i.e., parallel to the longitudinal axis of the housing 201). The first window portion 214a joins with the second window portion 214b at its upper end, so as to form a generally L-shaped window.

[0333] In this way, when the system housing 231 is oriented vertically (FIG. 16A), the meniscus 207 of the aerosol precursor 203 in the tank 206 (i.e., indicating the level of precursor) may be viewed through the first window portion 214a, and when the system housing 231 is oriented horizontally (FIG. 16C) the aerosol precursor level may be viewed through the second window portion 214b. In both orientations, the meniscus 207 extends transversely with respect to the elongate axis of the corresponding window portion 214a, 214b.

[0334] The window 205 (and window portions 214a, 214b) are partly defined by the consumable 204 and partly defined by the device 202, when the consumable 204 is received in a cavity 215 defined by the device housing 201. As is apparent from FIG. 16B in particular, the walls of the tank 206 of the consumable 204 are translucent, such that the e-liquid 203 can be viewed through the walls of the tank 206. The tank 206 comprises a raised region 217 in the shape of the window 205. Thus, the raised region 217 comprises a longitudinal portion 223a and a transverse portion 223b (which respectively define the first 214a and second 214b portions of the window 205 when formed).

[0335] The raised region 217 defines a lip 219 that abuts (i.e., seats against) an upper edge 221 of the device housing 201 when the consumable 204 is engaged in the cavity 215. The shape of the upper edge 221 of the device housing 201 is complementary to the lip 219 (which defines a lower edge of the raised region 217 of the tank 206), such that the lip 219 and upper edge 221 sit flush against one another. In particular, the upper end of the device housing 201 comprises a longitudinally extending slot 225 that accommodates the longitudinal portion 223a of the raised region 217 of the tank 206 when the consumable 204 and device 202 are engaged.

[0336] The longitudinal slot 225, in combination with the longitudinal portion 223a of the raised region 217, helps to guide the consumable 204 into the cavity 215. This is facilitated by the shape of the longitudinal portion 223a, which has a rounded/tapered distal end.

[0337] When the consumable 204 is received in the cavity 215, the non-raised region of the tank 206 enters the cavity, whilst the raised region 217 is retained above the cavity 215 by the contact of the lip 219 with the upper edge 221 of the housing 201. In this way, only the raised region 217 of the tank 217 is visible (view of the remainder of the tank 206 being obstructed by the device housing 201). Thus, the window 205 is defined by the combination of the consumable 204 and the device 202.

[0338] FIGS. 17A and 17B illustrate a further smoking substitute system 300. Again, due to similarities with the previously described systems 100, 200, corresponding reference numerals have been used. Like the previously described embodiment, this system 300 comprises a plurality of viewing regions in the form of front 314a, rear 314b, and side 314c, 314d window portions that are joined to form a window 305.

[0339] The system housing 331 (defined by a combination of the device housing 301 and the consumable housing 329) comprises opposing front 327a and rear 327b walls that are joined by opposing side walls 327c, 327d extending therebetween. The distance between the front 327a and rear 327b walls define a depth of the housing 331 and the distance between the side walls 327b, 327c define a width of the system housing 331, which is greater than the depth.

[0340] The front window portion 314a is formed in the front wall 327a of the system housing 331, the rear window portion 314b is formed in the rear wall 327b and each of the side window portions 314c, 314d is formed in a respective side wall 327c, 327d. In this way, the window portions 314a, 314b, 314c, 314d form a loop that extends about the longitudinal axis of the system housing 331.

[0341] Each of the front 314a and rear 314b window portions extends transversely with respect the longitudinal axis of the system housing 331. The rear window portions 314b, however, is located closer to the consumable 304 end of the system housing 331 than the front window portion 314a. Each of the side window portions 314c, 314d extends obliquely with respect to the longitudinal axis of the system housing 331. In particular, each side window portion 314c, 314d is sloped towards the consumable 304 end of the housing 331 in a direction from the front window portion 314a to the rear window portion 314b.

[0342] Like the previously discussed embodiments, this arrangement allows assessment of the level of aerosol precursor 303 in the tank 306 in both a vertical orientation and a horizontal orientation. In the vertical orientation (as depicted in the figures) the precursor level can be viewed through both of the side window portions 314c, 314d. As is apparent from FIG. 5B in particular, in this vertical orientation, the meniscus 307 of the precursor 303 extends transversely with respect to the elongate axes of the side window portions 314c, 314d.

[0343] Whilst not shown, it should be appreciated that, in the horizontal orientation, the precursor level can be viewed through either the side window portions 314c, 314d (due to their oblique orientation) or through the front 314a or rear 314b window portions. If the system 300 is positioned with the front wall 327 directed upwards (or downwards) the precursor level can be viewed through the side window portions 314c, 314d. If the system 300 positioned such that one of the side walls 327c, 327d is directed upwards then the precursor level can be viewed through the front 314a or rear 314b window portion.

[0344] Whilst not immediately apparent in the figures, the window 305 is formed only when the consumable 304 is engaged with the device 302. The tank 306 comprises a raised region having the same shape as the window 305 (when formed) and that defines a lip at a lower edge thereof. The lip engages with an upper edge of the device housing 301 when the tank 306 is received in the cavity of the device housing 301. Thus, the non-raised regions of the tank 306 are received in the cavity, whilst the raised region remains supported above the cavity (so as to be visible and so as to define the window 305).

[0345] While exemplary embodiments have been described above, many equivalent modifications and variations will be apparent to those skilled in the art when given this disclosure. Accordingly, the exemplary embodiments set forth above are considered to be illustrative and not limiting.

[0346] Throughout this specification, including the claims which follow, unless the context requires otherwise, the words “have”, “comprise”, and “include”, and variations such as “having”, “comprises”, “comprising”, and “including” will be understood to imply the 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.

[0347] It must 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 such a range is expressed, another embodiment includes from the one particular value and/or to the other particular value. Similarly, when values are expressed as approximations, by the 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%.

[0348] The words “preferred” and “preferably” are used herein refer to embodiments of the disclosure that may provide certain benefits under some circumstances. It is to be appreciated, however, that other embodiments may also be preferred under the same or different circumstances. The recitation of one or more preferred embodiments therefore does not mean or imply that other embodiments are not useful, and is not intended to exclude other embodiments from the scope of the disclosure, or from the scope of the claims.

[0349] Preferred aspects and embodiments are further described in the following paragraphs:

[0350] 1. A smoking substitute device, comprising: [0351] an elongate main body, the main body having a body length in a longitudinal dimension that is greater than a body width in a transverse dimension; [0352] wherein the main body includes an upper surface and an oppositely directed lower surface, the upper and lower surfaces meeting along a pair of oppositely directed transverse edges, [0353] wherein an upper surface radius of curvature of the upper surface in the transverse dimension is greater than half a main body depth, wherein the main body depth is a maximum distance between the upper surface and the lower surface; [0354] wherein a lower surface radius of curvature in the transverse dimension of the lower surface is greater than half the main body depth.

[0355] 2. A smoking substitute device according to paragraph 1, wherein an edge radius of curvature of the transverse edges is less than 5 millimeters, preferably less than 3 millimeters and preferably less than 1 millimeter.

[0356] 3 A smoking substitute device according to paragraph 1 or paragraph 2, wherein the maximum depth of the main body is between 5 and 30 millimeters, preferably between 10 and 20 millimeters.

[0357] 4. The smoking substitute device according to any preceding paragraph, wherein the main body of the device is curved in the longitudinal dimension.

[0358] 5. The smoking substitute device according to any preceding paragraph, wherein the upper surface radius of curvature is different from the lower surface radius of curvature.

[0359] 6. The smoking substitute device according to any one paragraphs 1 to 4, wherein the upper surface radius of curvature is substantially equal to the lower surface radius of curvature.

[0360] 7. The smoking substitute device according to any preceding paragraph, wherein the device includes a device charging means located on at least one of the transverse edges.

[0361] 8. The smoking substitute device according to any preceding paragraph, wherein the device includes a device charging means located on the lower surface.

[0362] 9. The smoking substitute device according to any preceding paragraph, wherein the device includes a user feedback means located along at least a portion of one of the transverse edges.

[0363] 10. The smoking substitute device according to any preceding paragraph, wherein the main body has a substantially constant transverse cross sectional shape along the longitudinal dimension.

[0364] 11. The substitute smoking device according to any preceding paragraph, wherein the main body includes an upper housing connected to a lower housing, wherein the upper housing includes the upper surface and the lower housing including the lower surface.

[0365] 12. The substitute smoking device according to paragraph 11, wherein the upper housing is connected to the lower housing along the transverse edges.

[0366] 13. A substitute smoking system, including a substitute smoking device according to any preceding paragraph and a consumable for engagement with the substitute smoking device.

[0367] 14. A substitute smoking system according to paragraph 13, wherein the device is configured such that the consumable is for engagement with an engagement longitudinal end of the device.

[0368] 15. A charging case for a substitute smoking device according to any preceding paragraph, wherein the charging case includes a cavity of corresponding transverse cross sectional shape to the main body of the device.

[0369] 16. A smoking substitute system/device comprising: [0370] a movement detection unit for detecting a movement of the system; [0371] a haptic feedback generation unit for generating a haptic feedback; and [0372] a haptic feedback controller unit configured to control the haptic feedback generation unit to generate the haptic feedback in response to the detection of movement of the system.

[0373] 17. A smoking substitute system/device according to paragraph 16, wherein the haptic feedback includes a sequence of activations of the haptic feedback generation unit.

[0374] 18. A smoking substitute system/device according to paragraph 17, wherein the sequence of activations is selectable from a plurality of activation sequences, the plurality of activation sequences being stored in a memory of the haptic feedback controller.

[0375] 19. A smoking substitute system/device according to any one of paragraphs 16-18, wherein the movement detection unit comprises an accelerometer.

[0376] 20. A smoking substitute system/device according to any one of paragraphs 16-19, wherein the haptic feedback controller unit is configured to switch between an ON mode wherein the haptic feedback unit is enabled and an OFF mode wherein the haptic feedback unit is disabled.

[0377] 21. A smoking substitute system/device according to any one of paragraphs 16-20, wherein the haptic feedback controller unit and the movement detection unit are configured to measure a movement of the system.

[0378] 22. A smoking substitute system/device according to paragraph 21, wherein one or more predetermined movements of the system are stored in a memory of the haptic feedback controller unit and the movement detection unit is configured to identify a movement of the device corresponding to the one or more predetermined movements.

[0379] 23. A smoking substitute system/device according to paragraph 22, wherein the system is configured to identify a first number of movements and to generate haptic feedback comprising a second number of activations of the haptic feedback generation unit.

[0380] 24. A smoking substitute system/device according to any one of paragraphs 16-23, wherein the haptic feedback generation unit comprises a vibration generator, the vibration generator comprising: [0381] an electric motor; and [0382] a weight eccentrically mounted on a shaft of the electric motor.

[0383] 25. A smoking substitute system according to any one of paragraphs 16-24, wherein: [0384] the smoking substitute system comprises an aerosol generator unit.

[0385] 26. A smoking substitute system according to paragraph 25, wherein the aerosol generator unit comprises: [0386] a reservoir for storing an aerosol precursor; [0387] a porous wick arranged in an air passage extending through at least part of the smoking substitute system; and [0388] a heater; [0389] wherein the porous wick is configured to wick the aerosol precursor from the reservoir to the heater, and wherein the heater is operable to heat the aerosol precursor to generate an aerosol from the wicked aerosol precursor.

[0390] 27. A smoking substitute system according to paragraph 25, wherein: [0391] the aerosol generator unit comprises an aerosol-forming substrate comprising tobacco material; and [0392] a heating element operable to heat the aerosol-forming substrate to generate an aerosol for entrainment in air flowing downstream from the aerosol generator.

[0393] 28. A smoking substitute system according to any of paragraphs 25 to 27, comprising: [0394] a smoking substitute device, and [0395] a consumable removably engageable with the smoking substitute device; wherein: [0396] the consumable includes the aerosol generator unit, and wherein [0397] the smoking substitute device includes the movement detector, the haptic feedback generation unit and the haptic feedback controller.

[0398] 29. A smoking substitute device configured for engagement with a consumable, the smoking substitute device and the consumable together forming a smoking substitute system according to paragraph 28.

[0399] 30. A method of operating a smoking substitute system/device according to any one of paragraphs 16 to 28, comprising the steps of: [0400] detecting a movement of the system/device; and [0401] generating a haptic feedback in response to the detection of the movement of the device/system.

[0402] 31. A smoking substitute device, comprising: [0403] a source of power, for providing power to a heater; [0404] a first charging connection, for charging the source of power, located at one end of the smoking substitute device; and [0405] a second charging connection, for charging the source of power, located on one or more lateral sides of the smoking substitute device.

[0406] 32. The smoking substitute device of claim 31, wherein the first charging connection is a USB connector.

[0407] 33. The smoking substitute device of either claim 31 or claim 32, wherein the second charging connection comprises a first electrical contact and second electrical contact.

[0408] 34. The smoking substitute device of claim 33, wherein the first electrical contact and the second electrical contact are resiliently biased in a direction away from the smoking substitute device.

[0409] 35. The smoking substitute device of claim 33 or 34, wherein the first electrical contact is located on a first lateral side of the smoking substitute device and the second electrical contact is located on a second lateral side of the smoking substitute device.

[0410] 36. The smoking substitute device of claim 35, wherein the second lateral side is opposite the first lateral side.

[0411] 37. The smoking substitute device of any of claims 31-34, wherein the first electrical contact and the second electrical contact are on a same lateral side of the smoking substitute device.

[0412] 38. The smoking substitute device of claim 37, wherein the first electrical contact and the second electrical contact are located in a row extending along a length of the smoking substitute device away from the first charging connection.

[0413] 39. The smoking substitute device of claim 37, wherein the first electrical contact and the second electrical contact are located in a row extending along a width of the smoking substitute device.

[0414] 40. The smoking substitute device of any one of claims 30-39, wherein the second charging connection is nearer the end of the smoking substitute device containing the first charging connection than an opposite end of the smoking substitute device.

[0415] 41. The smoking substitute device of any one of claims 30-40, wherein the source of power is a battery.

[0416] 42. The smoking substitute device of any one of claims 30-41, the smoking substitute device including the heater.

[0417] 43. The smoking substitute device of claim 42, wherein the heater is used in a vaporizer to vaporize an aerosol precursor.

[0418] 44. The smoking substitute device of any one of claims 30-43, wherein a main body of the smoking substitute device has a mandorla-shaped cross-section.

[0419] 45. A charging case for charging a smoking substitute device, the charging case comprising: [0420] a battery, for providing power to a source of power in the smoking substitute device; and [0421] a cavity, for receiving the smoking substitute device, wherein the cavity includes a charging connection on at least one lateral internal side thereof, arranged to electrically connect to a corresponding charging connection on one or more lateral sides of the smoking substitute device.

[0422] 46. A substitute smoking device, including: [0423] a processor; [0424] a main body, including an illumination region; and [0425] a source of light contained within the main body, the illumination region being configured such that light provided by the source of light passes through the illumination region of the main body; [0426] wherein the processor is configured to: [0427] (i) identify an operation of the smoking substitute device; and [0428] (ii) control the source of light contained within the main body, to illuminate an area of the illumination region based on the operation of the smoking substitute device identified.

[0429] 47. The smoking substitute device of paragraph 46, wherein the source of light is an array of light emitting diodes.

[0430] 48. The smoking substitute device of paragraph 46 or 47, wherein an intensity of the source of light is controlled so as to vary the area of illumination.

[0431] 49. The smoking substitute device of any one of paragraphs 46 to 48, wherein there are plural sources of light contained within the main body, and a number of sources of light emitting light is controlled so as to vary the area of illumination.

[0432] 50. The smoking substitute device of any one of paragraphs 46 to 49, wherein the processor is configured to identify a battery status query operation of the smoking substitute device, and to illuminate an area of the illumination region proportional to a level of charge stored in the battery.

[0433] 51. The smoking substitute device of any one of paragraphs 46 to 50, wherein the processor is configured to identify a consumable status query operation of the smoking substitute device, and to illuminate an area of the illumination region proportional to a level of consumable remaining

[0434] 52. The smoking substitute device of any one of paragraphs 46 to 51, wherein the processor is configured to identify an inhalation operation of the smoking substitute device, and to increase an area of the illumination region which is illuminated in proportion to a length of the inhalation operation.

[0435] 53. The smoking substitute device of any one of paragraphs 46 to 52 wherein the source of light includes a liquid crystal display

[0436] 54. The smoking substitute device of any one of paragraphs 46 to 53, wherein the illumination region of the main body is made from a diffusing material, such that the light passing through the illumination region from the source of light is diffused.

[0437] 55. The smoking substitute device of paragraph 54, wherein the illumination region is formed of polycarbonate.

[0438] 56. The smoking substitute device of any one of paragraphs 46 to 55, wherein the illumination region extends along at least half of a length of the main body.

[0439] 57. The smoking substitute device of any one of paragraphs 46 to 56, wherein the main body includes a shell having a first area with a first thickness and a second area with a second thickness, the first area including the illumination region and the first thickness being thinner than the second thickness.

[0440] 58. The smoking substitute device of any one of paragraphs 46 to 57, wherein the illumination region includes a plurality of discrete sub-illumination regions.

[0441] 59. The smoking substitute device of paragraph 58, wherein each sub-illumination region is separated from an adjacent sub-illumination region by an optically opaque divider.

[0442] 60. The smoking substitute device of any one of paragraphs 46 to 59, further comprising a mouthpiece, and wherein the illumination region is located towards an end of the smoking substitute device opposite to the mouthpiece.

[0443] 61. A smoking substitute device comprising a housing defining a cavity for releasable engagement of a tank therein, and an aperture formed in a wall of the housing defining the cavity for viewing the level of an aerosol precursor stored in the tank when engaged in the cavity.

[0444] 62. A smoking substitute device according to paragraph 61 wherein the aperture is elongate so as to define an elongate axis.

[0445] 63. A smoking substitute device according to paragraph 62 wherein the aperture is obround.

[0446] 64. A smoking substitute device according to any one paragraphs 61 to 63 wherein the aperture is a first aperture and the housing comprises a second aperture formed therein, the second aperture arranged for viewing the level of the aerosol precursor stored in the tank when engaged in the cavity.

[0447] 65. A smoking substitute device according to paragraph 64 wherein the housing comprises front and rear longitudinally extending walls that are spaced by opposing longitudinally extending side walls, and wherein the distance between the side wall defines a width of the housing and the distance between the front and rear walls defines a depth of the housing that is less than the width.

[0448] 66. A smoking substitute device according to paragraph 65 wherein the first aperture is formed in the front wall and the second aperture is formed in the rear wall.

[0449] 67. A smoking substitute device according to paragraph 65 wherein the first aperture is formed in the front or rear wall, and the second aperture is formed in one of the side walls.

[0450] 68. A smoking substitute device according to any one of claims 64 to 67 wherein the second aperture is elongate so as to define an elongate axis.

[0451] 69. A smoking substitute device according to paragraph 68 wherein the elongate axis of the first aperture is orthogonal to an elongate axis of the second aperture.

[0452] 70. A smoking substitute device according to paragraph 69 wherein the housing is elongate so as to define a longitudinal axis, and the elongate axis of the first aperture or the second aperture is parallel to the longitudinal axis.

[0453] 71. A smoking substitute device according to any one of paragraphs 61 to 70 that is configured to deform, or comprises a deformable portion, for snap engagement with the tank.

[0454] 72. A smoking substitute system comprising a smoking substitute device according to any one of the preceding claims, and a smoking substitute consumable comprising a tank for engagement in the cavity of the device, the tank containing an aerosol precursor and being configured such that the aerosol precursor of the tank is visible through the aperture of the device when the tank is received in the cavity.

[0455] 73. A system according to paragraph 72 wherein at least a portion of a wall of the tank is translucent.

[0456] 74. A system according to paragraph 73 wherein the translucent portion is arranged so as to align with the aperture of the device housing when the tank is received in the cavity.

[0457] 75. A system according to paragraph73 or 74 wherein the consumable comprises a retaining portion configured to engage the aperture of the device for retaining the consumable in the cavity.

[0458] 76. A smoking substitute system comprising a housing defining a cavity for receipt of a liquid aerosol precursor, the housing comprising one or more elongate viewing regions extending along respective elongate axes, the one or more viewing regions arranged such that for both vertical and horizontal orientations of the housing the meniscus of the aerosol precursor is visible through a viewing region of the one or more viewing regions and extends transversely with respect to the elongate axis of the viewing region.

[0459] 77. A smoking substitute system according to paragraph 76 wherein the housing is elongate and extends along a longitudinal axis and the one or more viewing regions comprises an angled viewing region having a respective elongate axis that is oriented obliquely with respect to the longitudinal axis.

[0460] 78. A smoking substitute system according to paragraph 77 wherein the angled viewing region extends on an angle of between 40 and 80 degrees with respect to the longitudinal axis.

[0461] 79. A smoking substitute system according to any one of paragraphs 76 to 78 wherein the one or more viewing regions comprises first and second viewing regions that are oriented so as to be orthogonal to one another.

[0462] 80. A smoking substitute system according to paragraph 79 wherein the first and second orthogonal viewing regions are joined.

[0463] 81. A smoking substitute system according to paragraph 80 wherein the first and second viewing regions are joined at respective ends so as to form an L-shape.

[0464] 82. A smoking substitute system according to paragraph 79 wherein the first and second orthogonal viewing regions are spaced from one another.

[0465] 83. A smoking substitute system according to any one of paragraphs 79 to 82 wherein the housing is elongate and extends along a longitudinal axis and one of the first and second orthogonal viewing regions is oriented so as to be parallel to the longitudinal axis and the other of the first and second orthogonal viewing regions is oriented so as to be perpendicular to the longitudinal axis.

[0466] 84. A smoking substitute system according to any one paragraphs 76 to 83, wherein the housing comprises opposing longitudinally extending front and rear walls spaced by opposing side walls, a first viewing region of the one or more viewing regions being formed in the front and/or rear wall and a second viewing region of the one or more viewing regions being formed in one of the side walls.

[0467] 85. A smoking substitute system according to any one paragraphs 76 to 84, comprising a smoking substitute device and a consumable configured for engagement with the device, the consumable comprising a tank for receipt of the liquid aerosol precursor.

[0468] 86. A smoking substitute device according to paragraph 84 wherein a portion of the tank is receivable in a cavity of the device and, when received therein, a portion of the tank remains outside of the cavity, the portion of the tank remaining outside of the cavity defining the one or more viewing regions.

[0469] 87. A smoking substitute device according to paragraph 86, wherein the tank comprises a raised region that defines the one or more viewing regions when the portion of the tank is received in the cavity of the device.

[0470] 88. A smoking substitute device according to paragraph 87 wherein the raised region defines a lip for engagement with an edge of the device defining an opening to the cavity of the device.

[0471] 89. A smoking substitute system according to any one of paragraphs 85 to 88 wherein the consumable comprises heater and the device includes a power source for supplying power to the heater when the consumable is engaged with the device.