DEVICE

[0001] The present disclosure relates to an adapter sleeve comprising a susceptor into which is inserted a heat-not-burn (HNB) stick, where the combined heat-not-burn stick and sleeve are configured to be used with an induction heating device to produce an aerosol to be inhaled.

[0002] The “background” description provided herein is for the purpose of generally presenting the context of the disclosure. Work of the presently named inventors, to the extent it is described in this section, as well as aspects of the description that may not otherwise qualify as prior art at the time of filing, are neither expressly nor impliedly admitted as prior art against the present invention.

[0003] Both vaping and HNB are alternatives to smoking tobacco that allow the user to inhale nicotine and other flavors in a way that is less damaging to health than smoking. HNB is a term that encompasses heating herbal or other non-liquid material to a high enough temperature to allow an aerosol to be formed with air passing through the material that allows the constituents of the aerosol to be inhaled. The temperature, however, is kept below the temperature at which the material ignites or combusts. The material may be tobacco but may also be other herbal materials as well as artificially synthesized materials. Typically, in currently commercially available HNB sticks, the majority of the material is derived from tobacco plants but has components added to it, such as glycerin. Examples of other herbal materials may include herbal medicines such as some traditional Chinese medicines or herbs containing cannabidiol, or where it is legal, materials derived from medicinal plants such as cannabis.

[0004] Using induction heating to heat the herbal material has advantages, which include: the ability to distribute the heat more uniformly by distributing the susceptor material in the herbal material; and lower power consumption because the heat is delivered within the volume of herbal material and the heated volume can be thermally isolated both leading to lower heat loss.

[0005] The present disclosure relates to an adapter sleeve for a heat-not-burn (“HNB”) device. The adapter sleeve comprises a sleeve body comprising a proximal body end, a distal body end, and a sleeve wall defining a sleeve interior space, and a peripheral susceptor arranged about an exterior of the sleeve interior space and defining a heating zone. The sleeve body is configured to accept a HNB stick inserted into the sleeve interior space through the distal body end and to position the HNB stick in the sleeve interior space such that a heated portion of the HNB stick is positioned within the heating zone. The adapter sleeve is configured to be inserted into, attached to, or otherwise connected with an induction heating device to form a HNB device.

[0006] The present disclosure also relates to a HNB aerosol generation system, comprising the adapter sleeve described above, a HNB stick comprising an aerosol-generating substrate, and an induction heating device configured to heat the susceptor material present in the HNB adapter sleeve. The induction heating device is configured to inductively heat the peripheral susceptor present in the adapter sleeve, which heats the aerosol-generating substrate to generate an aerosol to be inhaled.

[0007] In the following description, it is understood that other embodiments may be utilized and structural and operational changes may be made without departure from the scope of the present embodiments disclosed herein.

[0008] As used herein the words “a” and “an” and the like carry the meaning of “one or more.” [0009] As used herein, the terms “optional” or “optionally” means that the subsequently described event(s) can or cannot occur or the subsequently described component(s) may or may not be present (e.g., 0 wt.%).

[0010] According to a first aspect, the present disclosure provides an adapter sleeve for a heat- not-burn (“HNB”) device. The adapter sleeve comprises a sleeve body comprising a proximal body end, a distal body end, and a sleeve wall defining a sleeve interior space, and a peripheral susceptor arranged about an exterior of the sleeve interior space and defining a heating zone. The sleeve body is configured to accept a HNB stick inserted into the sleeve interior space through the distal body end and to position the HNB stick in the sleeve interior space such that a heated portion of the HNB stick is positioned within the heating zone. The adapter sleeve is configured to be inserted into, attached to, or otherwise connected with an induction heating device to form a HNB device. Such a HNB device allows a user to inhale nicotine and/or other chemicals from material within the HNB stick while the adapter sleeve prevents direct contact between the HNB stick and the induction heating device.

[0011] In some embodiments, the sleeve body has a substantially tubular shape. That is, the sleeve body has an elongated length with a hollow portion (the sleeve interior space) running substantially along the elongated length surrounded by material which makes up the sleeve body (the sleeve wall). In general, the tubular shape can have any suitable cross-sectional shape. Examples of such suitable cross-sectional shapes include, but are not limited to, circles, ellipses, flat-sided ovals, and polygons such as triangles, squares, rectangles, rhombuses, pentagons, hexagons, and the like. It should be understood that this tubular shape and cross-sectional shape refer to a shape of the overall sleeve body itself (e.g., a shape of an exterior surface or perimeter of the sleeve body) and is not intended to describe a shape of the sleeve interior space, which can have its own shape as described below.

[0012] In some embodiments, the sleeve body can have a shape (e.g., a cross-sectional shape) that is substantially constant throughout a length of the sleeve body. That is, the sleeve body has a single shape through an entirety of its length. In some embodiments, the sleeve body can have a shape that is not constant throughout a length of the sleeve body. That is, there can be a portion of the sleeve body having one shape and another portion of the sleeve body having a different shape. In some embodiments, the sleeve body comprises a first sleeve body portion having a first sleeve body shape and a second sleeve body portion having a second sleeve body shape. For example, a sleeve body can have a first sleeve body portion that includes the proximal body end and has a square cross-sectional shape and a second sleeve body portion that includes the distal body end and has a circular cross-sectional shape. A shape of the first sleeve body portion that includes the proximal body end may be configured to fit securely in an induction heating device described below. Having more than one sleeve body shape may be advantageous for facilitating or allowing a secure or convenient interaction the first sleeve body portion that include the proximal body end and the induction heating device while allowing for the second sleeve body portion that includes the distal body end to have a more aesthetically pleasing shape or a shape better configured to secure the HNB stick described below.

[0013] In some embodiments, the sleeve body can have a continuous transition in shape from the first sleeve body portion to the second sleeve body portion. That is, there can be a shape transitional body portion disposed between the first sleeve body portion and the second sleeve body portion. The shape transitional body portion can have a shape which gradually changes along a length of the shape transitional body portion. The shape of the shape transitional body portion can change from matching the first shape of the first sleeve body portion to matching the second shape of the second sleeve body portion. For example, the shape transitional body portion can have a smooth, gradual change from a first sleeve body portion having a square cross-sectional shape to a second sleeve body portion having a circular cross-sectional shape.

[0014] In some embodiments, the sleeve body can have a discontinuous transition in shape from the first sleeve body portion to the second sleeve body portion. That is, there can be an abrupt change in shape from the first sleeve body portion to the second sleeve body portion without a shape transitional body portion disposed in between.

[0015] In general, there is no limit to a number of differently-shaped sleeve body portions the sleeve body can comprise. For example, there can be a step-wise transition in shape from the proximal body end to the distal body end through any suitable number of sleeve body portions, each having a distinct sleeve body portion shape.

[0016] Having a difference in shape between the proximal body end and the distal body end may be advantageous for ensuring that the adapter sleeve is properly placed into the induction heating device. For example, the adapter sleeve can have a change in shape such that the adapter sleeve proximal end is placed at a proper depth into the heating device. That is, the first sleeve body portion has a shape that is configured to fit within the induction heating device and a second sleeve body portion that has a shape that is prevented from being placed within the induction heating device. This way, the shape of the adapter sleeve itself prevents the adapter sleeve from being pushed too far into the induction heating device. This may be advantageous for ensuring that the susceptor wires described below are properly positioned within the induction heating device, ensuring that there is proper airflow into and/or around the adapter sleeve and/or HNB stick, preventing damaging contact between the adapter sleeve and the induction heating device, or a combination of these. [0017] In some embodiments, the sleeve body has a size that is substantially constant along a length of the sleeve body. That is, the sleeve body has a single size that does not change. In some embodiments, the sleeve body has a size that is not substantially constant along a length of the sleeve body. In some embodiments, the sleeve body has a tapered shape. That is, the sleeve body has a size that is larger at one end (e.g., the distal body end) than the other end. In some embodiments, the tapered shape is configured such that the proximal body end has a larger outer extent (size) than the distal body end. In some embodiments, the tapered shape is configured such that the distal body end has a larger outer extent (size) than the proximal body end. That is, there can be a portion of the sleeve body having one size and another portion of the sleeve body having a different size. In some embodiments, the sleeve body has a first sleeve body portion that includes the proximal body end and has a first size and a second sleeve body portion that includes the distal body end and has a second size. The first sleeve body portion having the first size can be the same portion as the first sleeve body portion having the first cross-sectional shape described above or can be a different portion from the first sleeve body portion having the first cross-sectional shape described above. Similarly, the second sleeve body portion having the second size can be the same portion as the second sleeve body portion having the second cross-sectional shape described above or can be a different portion from the second sleeve body portion having the second cross-sectional shape described above. That is, the first sleeve body portion and second sleeve body portion of the sleeve body can differ in terms of size, shape, both, or neither.

[0018] In some embodiments, the sleeve body can have a continuous transition in size from the first sleeve body portion to the second sleeve body portion. That is, there can be a transitional body portion disposed between the first sleeve body portion and the second sleeve body portion. The transitional body portion can have a size that gradually changes along a length of the transitional body portion. The size of the transitional body portion can change from matching the first size of the first sleeve body portion to matching the second size of the second sleeve body portion. For example, the transitional body portion can have a smooth, gradual change from a first sleeve body portion having a larger size to a second sleeve body portion having a smaller size.

[0019] In some embodiments, the sleeve body can have a discontinuous transition in size from the first sleeve body portion to the second sleeve body portion. That is, there can be an abrupt change in size from the first sleeve body portion to the second sleeve body portion without a size transitional body portion disposed in between.

[0020] Having a difference in size between the proximal body end and the distal body end may be advantageous for ensuring that the adapter sleeve is properly placed into the induction heating device. For example, the adapter sleeve can have a change in size such that the adapter sleeve proximal end is placed at a proper depth into the heating device. That is, the first sleeve body portion has a size that is configured to fit within the induction heating device and a second sleeve body portion that is too large to fit within the induction heating device. This way, the size of the adapter sleeve itself prevents the adapter sleeve from being pushed too far into the induction heating device. This may be advantageous for ensuring that the susceptor wires described below are properly positioned within the induction heating device, ensuring that there is proper airflow into and/or around the adapter sleeve and/or HNB stick, preventing damaging contact between the adapter sleeve and the induction heating device, or a combination of these.

[0021] In general, there is no limit to a number of differently sized sleeve body portions the sleeve body can comprise. For example, there can be a stepwise transition in shape from the proximal body end to the distal body end through any suitable number of sleeve body portions, each having a distinct sleeve body portion shape, sleeve body portion size, both, or neither.

[0022] The sleeve body is substantially hollow. That is, the sleeve wall defines a sleeve interior space. In general, the sleeve interior space can have any suitable shape. Examples of such suitable cross-sectional shapes include, but are not limited to, circles, ellipses, flat-sided ovals, and polygons such as triangles, squares, rectangles, rhombuses, pentagons, hexagons, and the like. In some embodiments, the sleeve interior space has a cross-sectional shape that is the same as the sleeve body cross-sectional shape. In some embodiments, the sleeve interior space has a cross-sectional shape that is different from the sleeve body cross-sectional shape.

[0023] In some embodiments, the sleeve interior space can have a shape that is substantially constant throughout a length of the sleeve interior space. That is, the sleeve interior space has a single shape through an entirety of its length. In some embodiments, the sleeve interior space can have a shape that is not constant throughout a length of the sleeve interior space. That is, there can be a portion of the sleeve interior space having one shape and another portion of the sleeve interior space having a different shape. In some embodiments, the sleeve interior space comprises a first sleeve interior space portion having a first sleeve interior space shape and a second sleeve interior space portion having a second sleeve interior space shape. For example, a sleeve interior space can have a first sleeve interior space portion located near the proximal body end and having a square cross-sectional shape and a second sleeve interior space portion located near the distal body end and having a circular cross-sectional shape. A shape of the second sleeve interior space portion located near the distal body end may be configured to secure the HNB stick described below.

[0024] In some embodiments, the interior space can have a continuous transition in shape from the first sleeve interior space portion to the second sleeve interior space portion. That is, there can be a shape transitional interior space portion disposed between the first sleeve interior space portion and the second sleeve interior space portion. The shape transitional interior space portion can have a shape which gradually changes along a length of the shape transitional interior space portion. The shape of the shape transitional interior space portion can change from matching the first shape of the first sleeve interior space portion to matching the second shape of the second sleeve interior space portion. For example, the transition interior space portion can have a smooth, gradual change from a first sleeve interior space portion having a square cross-sectional shape to a second sleeve interior space portion having a circular cross-sectional shape. [0025] In some embodiments, the sleeve body can have a discontinuous transition in shape from the first sleeve interior space portion to the second sleeve interior space portion. That is, there can be an abrupt change in shape from the first sleeve interior space portion to the second sleeve interior space portion without a transitional interior space portion disposed in between.

[0026] In general, there is no limit to a number of differently shaped sleeve interior space portions the sleeve interior space can comprise. For example, there can be a stepwise transition in shape from the proximal body end to the distal body end through any suitable number of sleeve interior space portions, each having a distinct sleeve interior space portion shape.

[0027] Having a difference in shape between the sleeve interior space at the proximal body end and sleeve interior space at the distal body end may be advantageous for ensuring that the HNB stick is properly placed into and/or secured within the adapter sleeve. For example, the sleeve interior space can have a change in shape such that the HNB stick cannot be inserted past a certain depth. That is, the first sleeve interior space portion has a shape that is configured to permit entry of the HNB stick and a second sleeve interior space portion that has a shape that does not permit entry of the HNB stick. This way, the shape of the sleeve interior portion itself prevents the HNB stick from being pushed too far into the adapter sleeve. This may be advantageous for ensuring that the HNB stick is properly positioned with respect to the susceptor wires described below, ensuring that there is proper airflow into and/or around the adapter sleeve and/or HNB stick, preventing damaging contact between the adapter sleeve and the HNB stick, properly positioning the HNB stick within the adapter sleeve and/or with respect to the induction heating device, securely holding the HNB stick, or a combination of these.

[0028] In some embodiments, the sleeve interior space has a size that is substantially constant along a length of the sleeve interior space. That is, the sleeve interior space has a single size that does not change. In some embodiments, the sleeve interior space has a size that is not constant along a length of the sleeve interior space. In some embodiments, the sleeve interior space has a tapered shape. That is, the sleeve interior space has a size that is larger at one end (e.g., the end near the distal body end) than the other end (e.g., the end near the proximal body end). In some embodiments, the tapered shape is configured such that the end of the sleeve interior space near the proximal body end has a larger inner extent (size) than the end of the sleeve interior space near the distal body end. In some embodiments, the tapered shape is configured such that the end of the sleeve interior space near the distal body end has a larger inner extent (size) than the end the sleeve interior space near the proximal body end. In some embodiments, the sleeve interior space has a first sleeve interior space portion located near the proximal body end and having a first size and a second sleeve interior space portion located near the distal body end and having a second size. The first sleeve interior space portion having the first size can be the same as the first sleeve interior space portion having the first cross-sectional shape described above or can be different from the first sleeve interior space portion having the first cross-sectional shape described above. Similarly, the second sleeve interior space portion having the second size can be the same as the second sleeve interior space portion having the second cross-sectional shape described above or can be different from the second sleeve interior space portion having the second cross- sectional shape described above. That is, the first sleeve interior space portion and second sleeve interior space portion of the sleeve interior space can differ in terms of size, shape, both, or neither. [0029] Similarly, the first sleeve interior space portion having the first size and/or the first cross- sectional shape can be the same as the first sleeve body portion having the first size and/or first cross-sectional shape described above or can be different from the first sleeve body portion having the first size and/or first cross-sectional shape described above. That is, the first sleeve interior space portion can be located at the same location as or a different location from the first sleeve body portion. Further, the first sleeve interior space portion can have similar length (or extent) as or a different length (or extent) from the first sleeve body portion. That is, the first sleeve interior space portion and first sleeve body portion of the sleeve body can differ in terms of the extent and/or location. Likewise, the second sleeve interior space portion having the second size and/or the second cross-sectional shape can be the same as the second sleeve body portion having the second size and/or second cross-sectional shape described above or can be different from the second sleeve body portion having the second size and/or second cross-sectional shape described above. The second sleeve interior space portion can be located at the same location as or a different location from the second sleeve body portion. Further, the second sleeve interior space portion can have similar length (or extent) as or a different length (or extent) from the second sleeve body portion. That is, the second sleeve interior space portion and second sleeve body portion of the sleeve body can differ in terms of the extent and/or location.

[0030] In some embodiments, the sleeve interior space can have a continuous transition in size from the first sleeve interior space portion to the second sleeve interior space portion. That is, there can be a transitional interior space portion disposed between the first sleeve interior space portion and the second sleeve interior space portion. The transitional interior space portion can have a size that gradually changes along a length of the transitional interior space portion. The size of the transitional interior space portion can change from matching the first size of the first sleeve interior space portion to matching the second size of the second sleeve interior space portion. For example, the transitional interior space portion can have a smooth, gradual change from a first sleeve interior space portion having a larger size to a second sleeve interior space portion having a smaller size. The sleeve interior space can have a cross-sectional size that decreases or increases throughout a length of the sleeve interior space moving from the proximal body end to the distal body end.

[0031] In some embodiments, the sleeve interior space can have a discontinuous transition in interior space size from the first sleeve interior space portion to the second sleeve interior space portion. That is, there can be an abrupt change in size from the first sleeve interior space portion to the second sleeve interior space portion without a size transitional interior space portion disposed in between. [0032] Having a difference in size between the end of the sleeve interior space near the proximal body end and the sleeve interior space near the distal body end may be advantageous for ensuring that the HNB stick is properly placed into and/or secured within the adapter sleeve. For example, the sleeve interior space can have a change in size such that the HNB stick cannot be inserted past a certain depth. That is, the first sleeve interior space portion has a size that is configured to permit entry of the HNB stick and a second sleeve interior space portion that has a size that does not permit entry of the HNB stick (e.g., where the sleeve interior space is too small). This way, the size of the sleeve interior portion itself prevents the HNB stick from being pushed too far into the adapter sleeve. This may be advantageous for ensuring that the HNB stick is properly positioned with respect to the susceptor wires described below, ensuring that there is proper airflow into and/or around the adapter sleeve and/or HNB stick, preventing damaging contact between the adapter sleeve and the HNB stick, properly positioning the HNB stick within the adapter sleeve and/or with respect to the induction heating device, securely holding the HNB stick, or a combination of these.

[0033] In general, there is no limit to a number of differently sized sleeve interior space portions the sleeve interior space can comprise. For example, there can be a stepwise transition in shape from the end of the sleeve interior space near the proximal body end to the end of the sleeve interior space near the distal body end through any suitable number of sleeve interior space portions, each having a distinct sleeve interior space portion shape, sleeve interior space portion size, both, or neither.

[0034] As described above, the sleeve wall forms the sleeve body and defines the sleeve interior space. The sleeve wall can be constructed from a suitable heat-resistant material. The sleeve wall, and therefore the adapter sleeve itself, can be rigid, semi-rigid, or non-rigid. For example, the sleeve wall can be formed from a silicone; a silicone elastomer; glass; a ceramic; a heat-resistant polymer such as PEEK, PFTE, PVDF polyethylene, polycarbonate, polysulfone, polyethersulfone, polyphenylsulfone, polyetherimide, polyamideimide, or polyimide; or a combination of these.

[0035] In some embodiments, the sleeve wall has a uniform thickness about a width of the sleeve body. For example, when the sleeve body tubular shape has a circular cross-section and the sleeve interior space has a circular cross-section, the sleeve wall can have a uniform thickness about a circumference of the sleeve body. In this example, the sleeve interior space can be substantially centered within or concentric with a center of the sleeve body tubular shape. In another example, when the sleeve body tubular shape has a square cross-section and the sleeve interior space has a square cross section, the sleeve wall can have a uniform thickness on each side of the sleeve body tubular shape cross-section. Similar to the previous example, the sleeve interior space can be substantially centered within or concentric with a center of the sleeve body tubular shape. In some embodiments, the sleeve wall does not have a uniform thickness about a width of the sleeve body. Such a non-uniform thickness can be due to or associated with different cross-sectional shapes of the sleeve body tubular shape and the sleeve interior space. For example, when the sleeve body tubular shape has a circular cross-section and the sleeve interior space has an elliptical cross-section, the sleeve wall can be thinner in areas corresponding to the major axis of the ellipse of the sleeve interior space and thicker in areas corresponding to the minor axis of the ellipse of the sleeve interior space.

[0036] In some embodiments, the sleeve wall has a uniform thickness along a length of the sleeve body. In some embodiments, the sleeve wall does not have a uniform thickness along a length of the sleeve body. In some embodiments, the sleeve wall has a uniform thickness along a length of a portion of the sleeve body (e.g., the first sleeve body portion described above). In some embodiments, the sleeve wall has a thickness that increases along a length of the sleeve body moving from the proximal body end to the distal body end. In some embodiments, the sleeve wall has a thickness that decreases along a length of the sleeve body moving from the proximal body end to the distal body end. Such an increase and/or decrease can be associated with and/or cause by an increase and/or decrease in the size of the sleeve body and/or the sleeve interior space (e.g., by a tapering of the tubular shape as described above). For example, the sleeve body can have a constant outer extent (size) while the sleeve interior space has a decreasing tapering shape moving from the proximal body end to the distal body end. Such a decrease in the size of the sleeve interior space can be associated with or caused by an increase in the thickness of the sleeve wall.

[0037] In some embodiments, the sleeve wall comprises interior projections disposed on the inner surface of the sleeve wall and projecting into the sleeve interior space. These interior projections may be advantageous for positioning, holding, or securing the HNB stick within the sleeve interior space. The interior projections may further be useful for decreasing a surface area of the sleeve wall inner surface in contact with the HNB stick and/or for providing channels or spaces to facilitate airflow between the sleeve wall and the HNB stick. In general, the interior projections may be any suitable shape, for example bumps, ridges, waves, undulations, lines, or combinations of these. In some embodiments, the interior projections define airflow channels between the sleeve wall inner surface and the HNB stick through which air may pass to facilitate use of the adapter sleeve in generating an aerosol for a user to consume.

[0038] In some embodiments, the adapter sleeve further comprises a sleeve inner lining is disposed on the inner surface of the sleeve wall. The sleeve inner lining can be disposed such that the sleeve inner lining covers an entirety the sleeve wall inner surface. The sleeve inner lining can optionally cover the peripheral susceptor. In embodiments in which the peripheral susceptor is covered by a peripheral susceptor sheath as described below, the sleeve inner lining can cover the peripheral susceptor sheath or can be disposed so as to not cover the peripheral susceptor sheath.

[0039] The sleeve inner lining can be constructed from a suitable heat-resistant material. The sleeve inner lining can be rigid, semi-rigid, or non-rigid. For example, the sleeve inner lining can be formed from a silicone; a silicone elastomer; glass; a ceramic; a heat-resistant polymer such as PEEK, PFTE, PVDF polyethylene, polycarbonate, polysulfone, polyethersulfone, polyphenylsulfone, polyetherimide, polyamideimide, or polyimide; or a combination of these.

[0040] The distal body end is open. The distal body end is not envisioned as closed in any embodiments. That is, the distal body end is unobstructed to allow the HNB stick to be inserted into the adapter sleeve. In some embodiments, the distal body end comprises a stick retention structure. The stick retention structure can be a groove, clip, ridge, projection, indentation, or other similar structure configured to interact with a portion of the HNB stick. The stick retention structure may be useful for securing the HNB stick in the adapter sleeve, for ensuring a proper alignment or orientation of the HNB stick, or both. For example, the stick retention structure can be a projection disposed on the sleeve wall inner surface at a particular location. The projection can be configured to interact with a corresponding groove on an outer surface of the HNB stick such that the projection aligns with a groove opening for HNB stick insertion. The projection can travel within the groove as the HNB stick is inserted into the adapter sleeve. Upon reaching a certain depth, the groove can turn or curve such that the HNB stick cannot be inserted further but can be twisted. Such a twist of the HNB stick can place the projection into a locking portion of the groove such that only a specific counter-twist (optionally accompanied by another motion such as a longitudinal push) unlocks the HNB stick from the adapter sleeve for removal.

[0041] In some embodiments, the proximal body end is open. That is, the proximal body end is not fully obstructed and the sleeve body tubular shape is open on both ends. In such an embodiment, air can flow into the sleeve interior space through the open proximal body end during aerosol generation/user inhalation. In some embodiments, the proximal body end is closed. In some embodiments, the adapter sleeve further comprises an end cap disposed on the distal body end of the sleeve body. The end cap can be removable or not removable. The end cap can be formed from any suitable heat-resistant material as described above. The end cap can be formed from the same material as the sleeve wall or a different material from the sleeve wall. In some embodiments, the end cap is integral with the sleeve wall. That is, the sleeve wall closes over the proximal body end such that the sleeve wall and the end cap are formed from a single contiguous piece. In some embodiments, the end cap is not integral with the sleeve wall. In such embodiments, the end cap can be secured to the sleeve wall using any suitable method or technique, such as gluing, melt forming, ultrasonic welding, or a combination of these, or can be secured through the use of features or structures such as threads, fasteners, clips, grooves, press fits, twist fits, or combinations of these. In some embodiments, the end cap is removable and is connected to the sleeve wall through a threaded connection.

[0042] In some embodiments, the end cap is solid. That is, there are no openings or vents in the end cap through which air can pass into the sleeve interior space. In some embodiments, the end cap has openings or vents that allow air to pass into the sleeve interior space during aerosol generation/user inhalation. [0043] In some embodiments, the adapter sleeve comprises a sleeve retention structure. The sleeve retention structure can be a groove, clip, ridge, projection, indentation, or other similar structure configured to interact with a portion of the induction heating device. The sleeve retention structure may be useful for securing the adapter sleeve in the induction heating device, for ensuring a proper alignment or orientation of the adapter sleeve, or both. In some embodiments, the sleeve retention structure is disposed on or located at the proximal body end. In some embodiments, the sleeve retention structure is disposed on or located at a middle portion of the adapter sleeve. For example, the sleeve retention structure can be located where the induction heating device begins when the adapter sleeve is inserted to a proper depth within the induction heating device. In one example, the sleeve retention structure can be a wedge-shaped projection disposed on an outer surface of the adapter sleeve at the proximal body end. This wedge-shaped projection can be configured to be held by a corresponding clip structure of the induction heating device. For example, a spring-activated lever or a press fit structure. The wedge-shaped projection can allow for sleeve insertion, but not sleeve removal. A button or similar release mechanism disposed on the induction heating device can actuate the corresponding clip structure (e.g., the spring-activated lever or press fit structure) to allow for adapter sleeve removal from the induction heating device. This way, the adapter sleeve can be securely held within the induction heating device. In some embodiments, a method, mechanism, or series of motions to remove the HNB stick from the adapter sleeve is different from a method, mechanism, or series of motions to remove the adapter sleeve from the induction heating device. This may be advantageous for selectively disassembling the combination of the HNB stick, adapter sleeve, and induction heating device.

[0044] In some embodiments, the adapter sleeve comprises a peripheral susceptor. The peripheral susceptor is arranged about an exterior of the sleeve interior space. In some embodiments, the peripheral susceptor is disposed on an inner surface of the sleeve wall (“sleeve wall inner surface”). That is, the peripheral susceptor is not embedded within the sleeve wall itself. In some embodiments, an entirety of a thickness of the peripheral susceptor protrudes from the inner surface of the sleeve wall. This protrusion can be into the sleeve interior space.

[0045] In some embodiments, the peripheral susceptor is disposed partially embedded within the sleeve wall. That is, the sleeve wall covers a portion of the thickness of the peripheral susceptor but does not cover or encompass an entirety of the thickness of the peripheral susceptor. In some embodiments, the peripheral susceptor is disposed partially embedded within the sleeve wall such that a portion of the thickness of the peripheral susceptor protrudes into the sleeve interior space and the rest of the thickness of the peripheral susceptor is disposed within the sleeve wall. In some embodiments, the peripheral susceptor is disposed partially embedded within the sleeve wall such that a surface of the peripheral susceptor is flush with an inner surface of the sleeve wall. That is, the partially embedded peripheral susceptor does not protrude from the sleeve wall inner surface, but the sleeve wall does not entirely encompass the peripheral susceptor. In some embodiments, the peripheral susceptor is partially embedded within a groove or channel disposed within the inner surface of the sleeve wall. In some embodiments, the groove or channel has a depth such that the partially embedded peripheral susceptor protrudes from the sleeve wall inner surface into the sleeve interior space. In some embodiments, the groove or channel has a depth such that the partially embedded peripheral susceptor is flush with the sleeve wall inner surface.

[0046] In some embodiments, the peripheral susceptor is disposed completely embedded within the sleeve wall such that a portion of the sleeve wall exists between the peripheral susceptor and the sleeve interior space. In some embodiments, the peripheral susceptor is disposed completely embedded within the sleeve wall such that the sleeve wall inner surface has a raised or bulging portion in a region of the peripheral susceptor. That is, the sleeve wall inner surface has a contour which reflects the presence of the peripheral susceptor underneath. The presence of the peripheral susceptor can cause a detectable disturbance or change in the sleeve wall inner surface near the peripheral susceptor. Such a contour, raised, ridge, or bulging portion can be present for any portion of the length of the peripheral susceptor. In some embodiments, the peripheral susceptor is disposed completely embedded within the sleeve wall such that the sleeve wall inner surface is not changed by the presence of the peripheral susceptor. That is, the presence of the peripheral susceptor does not cause a detectable disturbance or change in the sleeve wall inner surface near the peripheral susceptor.

[0047] In some embodiments, the peripheral susceptor is disposed on an outer surface of the sleeve wall. That is, the sleeve wall and the sleeve interior space are encompassed by the peripheral susceptor. In general, the peripheral susceptor can be made of any suitable material capable of being heated by induction heating.

[0048] Induction heating involves the use of an alternating electromagnetic field that induces magnetization or eddy currents in the peripheral susceptor. The susceptor may be heated as a result of hysteresis losses or induced eddy currents, which heat the susceptor through ohmic or resistive heating. To be capable of being heated by induction heating, the material should be electrically conductive. Examples of materials capable of being heated by induction heating include, but are not limited to, metals and metal alloys such as iron, brass, aluminum, copper, and steel; and semiconductors such as silicon carbide, carbon, or graphite. A metal or metal alloy can be magnetic or non-magnetic. In some embodiments, the peripheral susceptor is formed from a ferromagnetic material. The peripheral susceptor can be in the form of a continuous body such as a solid wire, hollow wire, rod, mesh, or metallic foam or a discontinuous body formed from a plurality of susceptor particles such as granules, strips, shreds, blades, or rods placed in contact with one another.

[0049] In some embodiments, the peripheral susceptor may have a heat loss of more than 0.05 Joule per kilogram, preferably more than 0.1 Joule per kilogram. Heat loss is the capacity of the susceptor to transfer heat to the surrounding material.

[0050] In some embodiments, the peripheral susceptor can be formed from a susceptor material having a Curie temperature, which allows a heating process due to hysteresis loss only up to a certain maximum temperature. The susceptor may have a Curie temperature between about 200 degrees Celsius and about 450 degrees Celsius, preferably between about 240 degrees Celsius and about 400 degrees Celsius, for example about 280 degrees Celsius. When a susceptor material reaches its Curie temperature, the magnetic properties change. At the Curie temperature the susceptor material changes from a ferromagnetic phase to a paramagnetic phase. At this point, heating based on energy loss due to orientation of ferromagnetic domains stops. Further heating is then mainly based on eddy current formation such that a heating process is automatically reduced upon reaching the Curie temperature of the susceptor material. Preferably, susceptor material and its Curie temperature are adapted to the composition of the aerosol-generating substrate in order to achieve an optimal temperature and temperature distribution in the aerosolgenerating substrate for an optimum aerosol generation. The use of a susceptor material having a Curie temperature as described herein may be advantageous for preventing or lessening overheating of the susceptor wire.

[0051] In some embodiments, the peripheral susceptor is made of ferrite. Ferrite is a ferromagnetic material with a high magnetic permeability and is especially suitable as susceptor material. The main component of ferrite is iron. Other metallic components, for example, zinc, nickel, manganese, or non-metallic components, for example silicon, may be present in varying amounts. In some embodiments, the peripheral susceptor comprises a fully sintered ferrite powder, such as for example FP160, FP215, and FP350 by PPT, Indiana USA.

[0052] In some embodiments, a peripheral susceptor sheath is disposed on the peripheral susceptor. The peripheral susceptor sheath can be a structure into which the peripheral susceptor is placed (e.g., the sheath is self-supporting) or can be a coating on the peripheral susceptor (e.g., the sheath is not self-supporting). The peripheral susceptor sheath can conform to the peripheral susceptor (e.g., there is no gap between the peripheral susceptor and the sheath) or not conform to the peripheral susceptor (e.g., there is a gap between the peripheral susceptor and the sheath). Such a gap can be uniform or non-uniform throughout a length of the peripheral susceptor sheath. The peripheral susceptor sheath can be constructed from a suitable heat-resistant material. The peripheral susceptor sheath can be rigid or semi-rigid. For example, the peripheral susceptor sheath can be formed from glass; a ceramic; a heat-resistant polymer such as PEEK, PFTE, PVDF polyethylene, polycarbonate, polysulfone, polyethersulfone, polyphenylsulfone, polyetherimide, polyamideimide, or polyimide; or a combination of these. The peripheral susceptor sheath may be advantageous for providing additional thermal mass useful in heating the HNB stick and/or to prevent contact between the HNB stick and the peripheral susceptor. The peripheral susceptor sheath may also be advantageous for providing additional mechanical integrity to the peripheral susceptor to prevent damage, particularly during cleaning.

[0053] The peripheral susceptor defines a heating zone. This heating zone can be a portion of the adapter sleeve that reaches a certain minimum temperature, such as a temperature required for aerosol formation from the HNB stick. In some embodiments, the peripheral susceptor is configured to define the heating zone such that the heating zone is substantially cylindrically symmetrical. In some embodiments, the peripheral susceptor is configured to define the heating zone such that the heating zone is not cylindrically symmetrical. In some embodiments, the peripheral susceptor is configured to extend about an entirety of an outer perimeter of the sleeve interior space. That is, the heating zone is surrounded by the peripheral susceptor. Such a configuration may be advantageous for ensuring an even heat distribution to the HNB stick. This may prevent hot spots from forming that cause burning or leaving portions of the HNB stick at a temperature too low for aerosol formation. In some embodiments, the peripheral susceptor is configured to extend throughout an entirety of a length of the heating zone. That is, the heat from the peripheral susceptor does not extend significantly in a proximal or distal direction along the length of the adapter sleeve from the peripheral susceptor. This heat distribution may be due to rapid cooling or inefficient heat transfer from the peripheral susceptor to the HNB stick or sleeve wall outside of the heating zone.

[0054] The peripheral susceptor can have any suitable shape to define the heating zone. For example, the peripheral susceptor can have a zig-zag shape, a sinusoidal shape, a coil shape, or a combination of these. Preferably, the peripheral susceptor is configured such that a length of the peripheral susceptor is oriented at an angle of less than 75°, preferably less than 70°, preferably less than 65°, preferably less than 60°, preferably less than 55°, preferably less than 50°, preferably less than 45°, preferably less than 40° with respect to the length of the sleeve body. Such an orientation may be advantageous for ensuring efficient induction heating by favorable alignment of the length of the peripheral susceptor with a magnetic field generated by the induction heating device.

[0055] In some embodiments, the adapter sleeve comprises a central susceptor. The central susceptor is disposed within the sleeve interior space. In some embodiments, the central susceptor is disposed throughout an entirety of the length of the heating zone. In some embodiments, the central susceptor is not disposed throughout an entirety of the length of the heating zone. For example, the central susceptor can terminate before the heating zone terminates. That is, the central susceptor is shorter than the heating zone. In some embodiments, the central susceptor is positioned substantially centrally within the sleeve interior space. Such placement can be achieved by using a central susceptor support. The central susceptor support can be attached to the central susceptor and to the sleeve wall such that the central susceptor is supported away from the sleeve wall inner surface. The central susceptor support can be formed from any suitable heat-resistant material as described above. Preferably, the central susceptor support is rigid. Rigidity of the central susceptor support may be advantageous for keeping the central susceptor centrally positioned during HNB stick insertion and/or removal.

[0056] In some embodiments, the central susceptor is attached to the end cap. In embodiments in which the end cap is removable, the central susceptor can also be removed. That is, removal of the end cap also removes the central susceptor. Removability may be advantageous for cleaning the central susceptor, the sleeve wall, or both.

[0057] The central susceptor can be made of any suitable material capable of being heated by induction heating as described above. In some embodiments, the peripheral susceptor is formed from a ferromagnetic material. The peripheral susceptor can be in the form of a continuous body such as a solid wire, hollow wire, rod, mesh, or metallic foam or a discontinuous body formed from a plurality of susceptor particles such as granules, strips, shreds, blades, or rods placed in contact with one another. In some embodiments, the central susceptor is formed from a pair of wires. The pair of wires can be twisted around a central twist axis.

[0058] In some embodiments, a central susceptor sheath is disposed on the central susceptor. In general, the central susceptor sheath can be constructed from a suitable heat-resistant material. The central susceptor sheath can be a structure into which the central susceptor is placed (e.g., the sheath is self-supporting) or can be a coating on the central susceptor (e.g., the sheath is not self-supporting). The central susceptor sheath can be rigid or semi-rigid. For example, the central susceptor sheath can be formed from glass; a ceramic; a heat-resistant polymer such as PEEK, PFTE, PVDF, polyethylene, polycarbonate, polysulfone, polyethersulfone, polyphenylsulfone, polyetherimide, polyamideimide, or polyimide; or a combination of these. The central susceptor sheath may be advantageous for providing additional thermal mass useful in heating the HNB stick and/or to prevent contact between the HNB stick and the central susceptor, particularly during heating. The central susceptor sheath may also be advantageous for providing additional mechanical integrity to the central susceptor to prevent damage, particularly during cleaning or HNB stick insertion/removal. In some embodiments the central susceptor sheath conforms to the central susceptor. For example, in an embodiment where the central susceptor is formed from a pair of wires twisted about a central twist axis, the central susceptor sheath can conform to the pair of wires to form a screw-like shape. Such a screw-like shape may be advantageous for facilitating insertion of the HNB stick into the adapter sleeve, specifically by facilitating penetration of the aerosol-generating substrate by the central susceptor. In some embodiments, the central susceptor sheath does not conform to the central susceptor (e.g., there is a gap between the central susceptor and the sheath). Such a gap can be uniform or non-uniform throughout a length of the central susceptor sheath.

[0059] In some embodiments, the adapter sleeve comprises both a peripheral susceptor and a central susceptor, as described above. In some embodiments, the adapter sleeve comprises a peripheral susceptor but does not include a central susceptor. Such an embodiment may be particularly advantageous where the HNB stick comprises a susceptor, such as its own centrally- located susceptor. In such a situation, a central susceptor of the adapter sleeve can interfere with, displace, or damage a susceptor of the HNB stick. Therefore, it may be advantageous to provide an adapter sleeve that does not include a central susceptor. In some embodiments, the central susceptor from the adapter sleeve can be removed from the adapter sleeve. For example, if the central susceptor is attached to or disposed on a removable end cap, the removable end cap can be removed, and the adapter sleeve can be used without an end cap or an end cap that does not have a central susceptor attached to it can be inserted or installed in the adapter sleeve. That is, an end cap having a central susceptor can be swapped for an end cap that does not have a central susceptor.

[0060] In some embodiments, the adapter sleeve comprises a central susceptor but does not include a peripheral susceptor. Such an embodiment may be particularly advantageous where the HNB stick comprises a susceptor, such as its own peripherally-located susceptor. It may be disadvantageous to have the HNB stick susceptor come into close proximity or contact with the adapter sleeve peripheral susceptor. Thus, for a HNB stick having its own susceptor, an adapter sleeve lacking a peripheral susceptor, but having a central susceptor, can be used.

[0061] In some embodiments, the adapter sleeve includes neither a peripheral susceptor nor a central susceptor. Such an embodiment may be referred to as an “empty sleeve”, “susceptorless sleeve”, “susceptor-free sleeve”, or other similar term. Such an embodiment may be particularly advantageous where the HNB stick comprises a susceptor. It may be disadvantageous to have the HNB stick susceptor(s) come into close proximity or contact with the adapter sleeve peripheral susceptor and/or adapter sleeve central susceptor. Such close contact can result in damage to the HNB stick, damage to the adapter sleeve, burning of the aerosol-generating substrate, overheating, harsh taste, other unpleasant user experience, or a combination of these. Thus, in some situations, such as for a HNB stick having its own susceptor(s), an adapter sleeve lacking both a peripheral susceptor and a central susceptor, can be used.

[0062] In some embodiments, the adapter sleeve further comprises an insulating layer. The insulating layer is preferably disposed outside of the peripheral susceptor. The insulating layer may be advantageous for reducing heat loss from the peripheral susceptor in a direction away from the aerosol-generating substrate, protecting the induction heating device from damage caused by heat transfer from the adapter sleeve, or both. In some embodiments, the insulating layer is disposed within the sleeve wall. In some embodiments, the insulating layer is disposed on an exterior surface of the sleeve wall. In some embodiments, the peripheral susceptor is disposed within the insulating layer. For example, the insulating layer can be disposed on an exterior surface of the sleeve wall and the peripheral susceptor can be embedded within the insulating layer such that the peripheral susceptor is in contact with the exterior surface of the sleeve wall.

[0063] In some embodiments, the adapter sleeve comprises an identifier. In some embodiments, the identifier is an electronic identifier, such as a radio-frequency identification (RFID) device, a near-field communication (NFC) device, or the like. In some embodiments, the identifier is an optical identifier, such as a barcode, 2D-barcode such as a QR code, or the like. The identifier can store or encode information corresponding to the adapter sleeve and/or HNB sticks that are compatible with the adapter sleeve. For example, the identifier can store or encode information relating an optimal and/or maximum operating temperature of the adapter sleeve, magnetic properties and/or resonant frequency of the susceptor (peripheral susceptor, central susceptor, or both), or a combination of these. The identifier can be configured to be readable by the induction heating device in order to provide the information stored or encoded by the identifier.

[0064] The adapter sleeve is configured to allow air to flow into the adapter sleeve through the distal body end. The HNB stick inserted into the adapter sleeve through the distal body end should allow air to flow between an exterior of the HNB stick and the interior surface of the sleeve wall. The HNB stick should not form a tight seal such that air cannot flow. The interior projections and/or the peripheral susceptor (or if applicable the peripheral susceptor sheath) can contact the HNB stick in some areas, but should not contact an entirety of a circumference or perimeter of the HNB stick such that a seal is formed that obstructs airflow. In embodiments in which the proximal body end is open and/or in which the end cap has openings or vents, air can flow into the sleeve interior space through the open proximal body end or openings/vents. Air flowing into the sleeve interior space can pass into the HNB stick and optionally through the aerosol-generating substrate. The air can then flow through the HNB stick in the direction of the adapter sleeve distal body end (i.e., away from the induction heating device) for inhalation by the user.

[0065] One distinct advantage of the adapter sleeve of the present application is that the adapter sleeve prevents contact between the HNB stick (and aerosol-generating substrate contained therein) and the induction heating device. HNB sticks typically leave a residue in the vicinity of the end of the stick during use. This residue can be unsightly, negatively impact flavor, negatively impact performance of the induction heating device, or a combination of these. Typically, the residue needs to be cleaned away. The use of the adapter sleeve, however, will cause the residue to be deposited on the adapter sleeve itself, not the induction heating device. In this way, the induction heating device can be kept clean. Further, the adapter sleeve can be easily removed from the induction heating device, allowing a user to use a new or fresh adapter sleeve or to clean a dirty adapter sleeve conveniently. In preferred embodiments, the adapter sleeve can be immersed in water or other solvent or cleaning solution with no ill effects. Further, in embodiments in which the adapter sleeve comprises a removable end cap, the end cap can be removed for increased ease of cleaning.

[0066] The present disclosure also relates to a HNB aerosol generation system, comprising the HNB adapter sleeve as described above, a HNB stick comprising an aerosol-generating substrate, and an induction heating device configured to heat the susceptor material present in the HNB adapter sleeve. In some non-limiting embodiments, the HNB stick comprising an aerosolgenerating substrate is inserted into the HNB adapter sleeve and the combined stick and sleeve is then inserted into an induction heating device to form the apparatus. In other non-limiting embodiments, the HNB adapter sleeve appropriate for the HNB stick to be used is first inserted into the induction heating device and the HNB stick is then inserted into the combined HNB adapter sleeve and induction heating device to form the HNB apparatus. The HNB apparatus is configured to heat the susceptor material present in the HNB adapter sleeve to generate an aerosol to be inhaled.

[0067] As used herein, the terms “heat-not-burn stick” and “HNB stick” refer to aerosol-generating articles containing a non-liquid aerosol generating substrate. While typically substantially tubular in shape, there is no general limitation on the shape an HNB stick can take. The HNB stick can include or comprise a stick body that contains, holds, or secures the aerosol-generating substrate. The stick body can be configured to allow air or other gases to flow through or around the aerosolgenerating substrate. Such airflow can be advantageous for delivery of generated aerosol to a user. The HNB stick can include or comprise a susceptor as described above. Such a susceptor can be centrally-located (e.g., disposed substantially centrally within the stick body, such as concentrically and coaxially in a cylindrical HNB stick) or can be peripherally-located (e.g., disposes substantially near or along an outside perimeter of the HNB stick, such as just inside an exterior surface of a cylindrical HNB stick). The HNB stick can contain either or both of a peripherally-located susceptor and a centrally-located susceptor.

[0068] The aerosol-generating substrate can be or can contain tobacco but can also be or can contain other herbal materials as well as artificially synthesized materials. Typical aerosolgenerating substrates used in HNB sticks are non-liquids. That is, the aerosol-generating substrate is not a liquid, but can be in the form of a solid, gel, paste, Bingham plastic, or combination of these. The aerosol-generating substrate can be in the form of a consolidated mass, granules, shreds, chips, particles, or other suitable shape, or a combination of these. Typically, in currently commercially available HNB sticks, the majority of the aerosol-generating substrate is derived from tobacco plants but has components added to it such as glycerin. Examples of other herbal materials may include herbal medicines such as some traditional Chinese medicines or herbs containing cannabidiol, or where it is legal, materials derived from medicinal plants such as cannabis. The aerosol-generating substrate generates an aerosol when heated.

[0069] Embodiments of the present disclosure may also be as set forth in the following parentheticals.

[0070] (1). An adapter sleeve, comprising a sleeve body comprising a proximal body end, a distal body end, and a sleeve wall defining a sleeve interior space; and a peripheral susceptor arranged about an exterior of the sleeve interior space and defining a heating zone, wherein the sleeve body is configured to accept a heat-not-burn stick inserted into the sleeve interior space through the distal body end; and the sleeve body is configured to position the heat-not-burn stick in the sleeve interior space such that a heated portion of the heat-not-burn stick is positioned within the heating zone.

[0071] (2). The adapter sleeve of (1), wherein the sleeve body has a substantially tubular shape. [0072] (3). The adapter sleeve of any one of (1) to (2), wherein the sleeve body has a tapered shape. [0073] (4). The adapter sleeve of (3), wherein the tapered shape is configured such that the proximal body end has a larger outer extent than the distal body end.

[0074] (5). The adapter sleeve of any one of (3) to (4), wherein the tapered shape is configured such that the distal body end has a larger outer extent than the proximal body end.

[0075] (6). The adapter sleeve of any one of (1) to (5), wherein the sleeve interior space has a cross-section that is substantially circular in shape.

[0076] (7). The adapter sleeve of any one of (1) to (6), wherein the sleeve interior space has a cross-section that is elliptical in shape.

[0077] (8). The adapter sleeve of any one of (1) to (7), wherein the sleeve interior space has a cross-section that is polygonal in shape.

[0078] (9). The adapter sleeve of any one of (1) to (8), wherein the sleeve interior space has a cross-sectional size that is substantially constant throughout a length of the sleeve interior space. [0079] (10). The adapter sleeve of any one of (1) to (9), wherein the sleeve interior space has a cross-sectional size that is not constant throughout a length of the sleeve interior space.

[0080] (11). The adapter sleeve of (10), wherein the sleeve interior space has a cross-sectional size that is decreases throughout a length of the sleeve interior space moving from the proximal body end to the distal body end.

[0081] (12). The adapter sleeve of any one of (10) to (11), wherein the sleeve interior space has a cross-sectional size that is increases throughout a length of the sleeve interior space moving from the proximal body end to the distal body end.

[0082] (13). The adapter sleeve of any one of (1) to (12), wherein the sleeve wall has a uniform thickness about a width of the sleeve body.

[0083] (14). The adapter sleeve of any one of (1) to (13), wherein the sleeve wall does not have a uniform thickness about a width of the sleeve body.

[0084] (15). The adapter sleeve of any one of (1) to (14), wherein the sleeve wall has a uniform thickness along a length of the sleeve body.

[0085] (16). The adapter sleeve of any one of (1) to (15), wherein the sleeve wall does not have a uniform thickness along a length of the sleeve body

[0086] (17). The adapter sleeve of any one of (1) to (16), wherein the peripheral susceptor is disposed on an inner surface of the sleeve wall.

[0087] (18): The adapter sleeve of (17), wherein a peripheral susceptor sheath is disposed on the peripheral susceptor.

[0088] (19). The adapter sleeve of any one of (17) to (18), wherein a sleeve inner lining is disposed on the inner surface of the sleeve wall such that the inner sleeve lining covers the peripheral susceptor and the inner surface of the sleeve wall.

[0089] (20). The adapter sleeve of any one of (18) to (19), wherein a sleeve inner lining is disposed on the inner surface of the sleeve wall such that the inner sleeve lining covers the inner surface of the sleeve wall but does not cover the peripheral susceptor sheath. [0090] (21). The adapter sleeve of any one of (1) to (20), wherein the peripheral susceptor is disposed partially embedded within the sleeve wall.

[0091] (22). The adapter sleeve of (21), wherein the peripheral susceptor is disposed partially embedded within the sleeve wall such that a surface of the peripheral susceptor is flush with an inner surface of the sleeve wall.

[0092] (23). The adapter sleeve of (22), wherein a sleeve inner lining is disposed on the inner surface of the sleeve wall such that the inner sleeve lining covers the surface of the peripheral susceptor and the inner surface of the sleeve wall.

[0093] (24). The adapter sleeve of any one of (22) to (23), wherein a peripheral susceptor sheath is disposed on the peripheral susceptor.

[0094] (25). The adapter sleeve of (24), wherein a sleeve inner lining is disposed on the inner surface of the sleeve wall such that the inner sleeve lining covers the inner surface of the sleeve wall but does not cover the surface of the peripheral susceptor sheath.

[0095] (26). The adapter sleeve of any one of (21) to (25), wherein the peripheral susceptor is disposed partially embedded within the sleeve wall such that a surface of the peripheral susceptor is not flush with an inner surface of the sleeve wall and protrudes into the sleeve interior space.

[0096] (27). The adapter sleeve of (26), wherein a sleeve inner lining is disposed on the inner surface of the sleeve wall such that the inner sleeve lining covers the surface of the peripheral susceptor and the inner surface of the sleeve wall.

[0097] (28). The adapter sleeve of any one of (26) to (27), wherein a peripheral susceptor sheath is disposed on the peripheral susceptor.

[0098] (29). The adapter sleeve of any one of (26) to (28), wherein a sleeve inner lining is disposed on the inner surface of the sleeve wall such that the inner sleeve lining covers the inner surface of the sleeve wall but does not cover the surface of the peripheral susceptor sheath.

[0099] (30). The adapter sleeve of any one of (1) to (20), wherein the peripheral susceptor is disposed completely embedded within the sleeve wall such that a portion of the sleeve wall exists between the peripheral susceptor and the sleeve interior space.

[0100] (31). The adapter sleeve of (30), wherein a peripheral susceptor sheath is disposed on the peripheral susceptor.

[0101] (32). The adapter sleeve of any one of (30) to (31), wherein a sleeve inner lining is disposed on the inner surface of the sleeve wall.

[0102] (33). The adapter sleeve of any one of (1) to (32), wherein the sleeve wall comprises interior projections disposed on an inner surface of the sleeve wall and projecting into the sleeve interior space.

[0103] (34). The adapter sleeve of any one of (1) to (33), wherein the peripheral susceptor is disposed on an outer surface of the sleeve wall.

[0104] (35). The adapter sleeve of any one of (1) to (34), wherein the peripheral susceptor comprises a material capable of being heated by induction heating. [0105] (36). The adapter sleeve of any one of (1) to (35), wherein the peripheral susceptor is configured to define the heating zone such that the heating zone is substantially cylindrically symmetrical.

[0106] (37). The adapter sleeve of any one of (1) to (36), wherein the peripheral susceptor is configured to define the heating zone such that the heating zone is not cylindrically symmetrical.

[0107] (38). The adapter sleeve of any one of (1) to (37), wherein the peripheral susceptor is configured to extend about an entirety of an outer perimeter of the sleeve interior space.

[0108] (39). The adapter sleeve of any one of (1) to (38), wherein the peripheral susceptor is configured to extend throughout an entirety of a length of the heating zone.

[0109] (40). The adapter sleeve of any one of (1) to (39), wherein the peripheral susceptor has a zig-zag shape.

[0110] (41). The adapter sleeve of any one of (1) to (40), wherein the peripheral susceptor has a sinusoidal shape.

[0111] (42). The adapter sleeve of any one of (1) to (41), wherein the peripheral susceptor has a coil shape.

[0112] (43). The adapter sleeve of any one of (1) to (42), further comprising an end cap disposed on the distal body end of the sleeve body.

[0113] (44). The adapter sleeve of (43), wherein the end cap is a removable end cap.

[0114] (45). The adapter sleeve of any one of (43) to (44), wherein the end cap comprises openings through which air can pass into the sleeve interior space.

[0115] (46). The adapter sleeve of any one of (1) to (45), further comprising a central susceptor disposed within the sleeve interior space.

[0116] (47). The adapter sleeve of (46), wherein the central susceptor is positioned substantially centrally within the sleeve interior space using a central susceptor support.

[0117] (48). The adapter sleeve of any one of (46) to (47), wherein a central susceptor sheath is disposed on the central susceptor.

[0118] (49). The adapter sleeve of any one of (43) to (48), further comprising a central susceptor disposed within the sleeve interior space and attached to the end cap.

[0119] (50): The adapter sleeve of any one of (1) to (49), further comprising an insulating layer disposed outside of the peripheral susceptor.

[0120] (51): The adapter sleeve of (50), wherein the insulating layer is disposed within the sleeve wall.

[0121] (52): The adapter sleeve of any one of (50) to (51), wherein the insulating layer is disposed on an exterior surface of the sleeve wall.

[0122] (53): The adapter sleeve of (52), wherein the peripheral susceptor is disposed within the insulating layer.

[0123] (54): The adapter sleeve of any one of (1) to (53), further comprising an electronic identifier. [0124] (55): The adapter sleeve of any one of (1) to (54), further comprising an optical identifier. [0125] (56): The adapter sleeve of any one of (1) to (55), further comprising a stick retention structure.

[0126] (57): The adapter sleeve of any one of (1) to (56), further comprising a sleeve retention structure.

[0127] (58): A heat-not-burn aerosol generation system, comprising an adapter sleeve, comprising a sleeve body comprising a proximal body end, a distal body end, and a sleeve wall defining a sleeve interior space, and a peripheral susceptor arranged about an exterior of the sleeve interior space and defining a heating zone; a heat-not-burn stick comprising an aerosol generating substrate; and an induction heating device configured to accept the adapter sleeve and inductively heat the peripheral susceptor, wherein the sleeve body is configured to accept the heat- not-burn stick inserted into the sleeve interior space through the distal body end; the sleeve body is configured to position the heat-not-burn stick in the sleeve interior space such that the aerosol generating substrate is positioned within the heating zone; heating of the peripheral susceptor by the induction heating device heats the aerosol generating substrate, thereby generating an aerosol.

[0128] (59). The heat-not-burn aerosol generation system of (58), wherein the sleeve body has a substantially tubular shape.

[0129] (60). The heat-not-burn aerosol generation system of any one of (58) to (59), wherein the sleeve body has a tapered shape.

[0130] (61). The heat-not-burn aerosol generation system of (60), wherein the tapered shape is configured such that the proximal body end has a larger outer extent than the distal body end.

[0131] (62). The heat-not-burn aerosol generation system of any one of (60) to (61), wherein the tapered shape is configured such that the distal body end has a larger outer extent than the proximal body end.

[0132] (63). The heat-not-burn aerosol generation system of any one of (58) to (62), wherein the sleeve interior space has a cross-section that is substantially circular in shape.

[0133] (64). The heat-not-burn aerosol generation system of any one of (58) to (63), wherein the sleeve interior space has a cross-section that is elliptical in shape.

[0134] (65). The heat-not-burn aerosol generation system of any one of (58) to (64), wherein the sleeve interior space has a cross-section that is polygonal in shape.

[0135] (66). The heat-not-burn aerosol generation system of any one of (58) to (65), wherein the sleeve interior space has a cross-sectional size that is substantially constant throughout a length of the sleeve interior space.

[0136] (67). The heat-not-burn aerosol generation system of any one of (58) to (66), wherein the sleeve interior space has a cross-sectional size that is not constant throughout a length of the sleeve interior space. [0137] (68). The heat-not-burn aerosol generation system of (67), wherein the sleeve interior space has a cross-sectional size that is decreases throughout a length of the sleeve interior space moving from the proximal body end to the distal body end.

[0138] (69). The heat-not-burn aerosol generation system of any one of (67) to (68), wherein the sleeve interior space has a cross-sectional size that is increases throughout a length of the sleeve interior space moving from the proximal body end to the distal body end.

[0139] (70). The heat-not-burn aerosol generation system of any one of (58) to (69), wherein the sleeve wall has a uniform thickness about a width of the sleeve body.

[0140] (71). The heat-not-burn aerosol generation system of any one of (58) to (70), wherein the sleeve wall does not have a uniform thickness about a width of the sleeve body.

[0141] (72). The heat-not-burn aerosol generation system of any one of (58) to (71), wherein the sleeve wall has a uniform thickness along a length of the sleeve body.

[0142] (73). The heat-not-burn aerosol generation system of any one of (58) to (72), wherein the sleeve wall does not have a uniform thickness along a length of the sleeve body

[0143] (74). The heat-not-burn aerosol generation system of any one of (58) to (73), wherein the peripheral susceptor is disposed on an inner surface of the sleeve wall.

[0144] (75): The heat-not-burn aerosol generation system of (74), wherein a peripheral susceptor sheath is disposed on the peripheral susceptor.

[0145] (76). The heat-not-burn aerosol generation system of any one of (74) to (75), wherein a sleeve inner lining is disposed on the inner surface of the sleeve wall such that the inner sleeve lining covers the peripheral susceptor and the inner surface of the sleeve wall.

[0146] (77). The heat-not-burn aerosol generation system of any one of (75) to (76), wherein a sleeve inner lining is disposed on the inner surface of the sleeve wall such that the inner sleeve lining covers the inner surface of the sleeve wall but does not cover the peripheral susceptor sheath.

[0147] (78). The heat-not-burn aerosol generation system of any one of (58) to (77), wherein the peripheral susceptor is disposed partially embedded within the sleeve wall.

[0148] (79). The heat-not-burn aerosol generation system of (78), wherein the peripheral susceptor is disposed partially embedded within the sleeve wall such that a surface of the peripheral susceptor is flush with an inner surface of the sleeve wall.

[0149] (80). The heat-not-burn aerosol generation system of (79), wherein a sleeve inner lining is disposed on the inner surface of the sleeve wall such that the inner sleeve lining covers the surface of the peripheral susceptor and the inner surface of the sleeve wall.

[0150] (81). The heat-not-burn aerosol generation system of any one of (79) to (80), wherein a peripheral susceptor sheath is disposed on the peripheral susceptor.

[0151] (82). The heat-not-burn aerosol generation system of (81), wherein a sleeve inner lining is disposed on the inner surface of the sleeve wall such that the inner sleeve lining covers the inner surface of the sleeve wall but does not cover the surface of the peripheral susceptor sheath. [0152] (83). The heat-not-burn aerosol generation system of any one of (78) to (82), wherein the peripheral susceptor is disposed partially embedded within the sleeve wall such that a surface of the peripheral susceptor is not flush with an inner surface of the sleeve wall and protrudes into the sleeve interior space.

[0153] (84). The heat-not-burn aerosol generation system of (83), wherein a sleeve inner lining is disposed on the inner surface of the sleeve wall such that the inner sleeve lining covers the surface of the peripheral susceptor and the inner surface of the sleeve wall.

[0154] (85). The heat-not-burn aerosol generation system of any one of (83) to (84), wherein a peripheral susceptor sheath is disposed on the peripheral susceptor.

[0155] (86). The heat-not-burn aerosol generation system of any one of (83) to (85), wherein a sleeve inner lining is disposed on the inner surface of the sleeve wall such that the inner sleeve lining covers the inner surface of the sleeve wall but does not cover the surface of the peripheral susceptor sheath.

[0156] (87). The heat-not-burn aerosol generation system of any one of (58) to (77), wherein the peripheral susceptor is disposed completely embedded within the sleeve wall such that a portion of the sleeve wall exists between the peripheral susceptor and the sleeve interior space.

[0157] (88). The heat-not-burn aerosol generation system of (87), wherein a peripheral susceptor sheath is disposed on the peripheral susceptor.

[0158] (89). The heat-not-burn aerosol generation system of any one of (87) to (88), wherein a sleeve inner lining is disposed on the inner surface of the sleeve wall.

[0159] (90). The heat-not-burn aerosol generation system of any one of (58) to (89), wherein the sleeve wall comprises interior projections disposed on an inner surface of the sleeve wall and projecting into the sleeve interior space.

[0160] (91). The heat-not-burn aerosol generation system of any one of (58) to (90), wherein the peripheral susceptor is disposed on an outer surface of the sleeve wall.

[0161] (92). The heat-not-burn aerosol generation system of any one of (58) to (91), wherein the peripheral susceptor comprises a material capable of being heated by induction heating.

[0162] (93). The heat-not-burn aerosol generation system of any one of (58) to (92), wherein the peripheral susceptor is configured to define the heating zone such that the heating zone is substantially cylindrically symmetrical.

[0163] (94). The heat-not-burn aerosol generation system of any one of (58) to (93), wherein the peripheral susceptor is configured to define the heating zone such that the heating zone is not cylindrically symmetrical.

[0164] (95). The heat-not-burn aerosol generation system of any one of (58) to (94), wherein the peripheral susceptor is configured to extend about an entirety of an outer perimeter of the sleeve interior space.

[0165] (96). The heat-not-burn aerosol generation system of any one of (58) to (95), wherein the peripheral susceptor is configured to extend throughout an entirety of a length of the heating zone. [0166] (97). The heat-not-burn aerosol generation system of any one of (58) to (96), wherein the peripheral susceptor has a zig-zag shape.

[0167] (98). The heat-not-burn aerosol generation system of any one of (58) to (97), wherein the peripheral susceptor has a sinusoidal shape.

[0168] (99). The heat-not-burn aerosol generation system of any one of (58) to (98), wherein the peripheral susceptor has a coil shape.

[0169] (100). The heat-not-burn aerosol generation system of any one of (58) to (99), further comprising an end cap disposed on the distal body end of the sleeve body.

[0170] (101). The heat-not-burn aerosol generation system of (100), wherein the end cap is a removable end cap.

[0171] (102). The heat-not-burn aerosol generation system of any one of (100) to (101), wherein the end cap comprises openings through which air can pass into the sleeve interior space.

[0172] (103). The heat-not-burn aerosol generation system of any one of (58) to (102), further comprising a central susceptor disposed within the sleeve interior space.

[0173] (104). The heat-not-burn aerosol generation system of (103), wherein the central susceptor is positioned substantially centrally within the sleeve interior space using a central susceptor support.

[0174] (105). The heat-not-burn aerosol generation system of any one of (103) to (104), wherein a central susceptor sheath is disposed on the central susceptor.

[0175] (106). The heat-not-burn aerosol generation system of any one of (100) to (105), further comprising a central susceptor disposed within the sleeve interior space and attached to the end cap.

[0176] (107): The heat-not-burn aerosol generation system of any one of (58) to (106), further comprising an insulating layer disposed outside of the peripheral susceptor.

[0177] (108): The heat-not-burn aerosol generation system of (107), wherein the insulating layer is disposed within the sleeve wall.

[0178] (109). The heat-not-burn aerosol generation system of any one of (107) to (108), wherein the insulating layer is disposed on an exterior surface of the sleeve wall.

[0179] (110): The heat-not-burn aerosol generation system of (109), wherein the peripheral susceptor is disposed within the insulating layer.

[0180] (111). The heat-not-burn aerosol generation system of any one of (58) to (110), further comprising an electronic identifier.

[0181] (112): The heat-not-burn aerosol generation system of any one of (58) to (111), further comprising an optical identifier.

[0182] (113): The heat-not-burn aerosol generation system of any one of (58) to (112), further comprising a stick retention structure.

[0183] (114): The heat-not-burn aerosol generation system of any one of (58) to (113), further comprising a sleeve retention structure. [0184] The examples below are intended to further illustrate protocols for construction of the adapter sleeve and construction and use of the HNB aerosol generation system and are not intended to limit the scope of the claims.

[0185] Where a numerical limit or range is stated herein, the endpoints are included. Also, all values and subranges within a numerical limit or range are specifically included as if explicitly written out.

[0186] Obviously, numerous modifications and variations of the present invention are possible in light of the above teachings. It is therefore to be understood that, within the scope of the appended claims, the invention may be practiced otherwise than as specifically described herein.

[0187] Examples will now be further described with reference to the figures in which:

[0188] FIG. 1 depicts an adapter sleeve according to an exemplary embodiment.

[0189] FIGS. 2A-2C depict the insertion of a HNB stick into the adapter sleeve according to an exemplary embodiment.

[0190] FIG. 3 depicts the adapter sleeve placed within an induction heating device according to an exemplary embodiment.

[0191] FIGS. 4A-4C depict susceptors according to certain exemplary embodiments, where FIG. 4A shows a central susceptor and FIGS. 4B-4C show peripheral susceptors.

[0192] FIG. 5 depicts an exemplary heat-not-burn aerosol generation system in which the HNB stick is inserted into the adapter sleeve, which is placed within a housed induction heating device, according to an exemplary embodiment.

[0193] FIG. 1 shows a non-limiting exemplary embodiment of an adapter sleeve of the present application. The exemplary adapter sleeve 101 is designed to be used with a HNB stick with a diameter of approximately 7 mm and with a plug of aerosol-generating substrate approximately 10 mm long. The adapter sleeve in FIG. 1 has been rendered partially transparent so that the components can be seen. FIG. 1 depicts the proximal body end 102, distal body end 103, and sleeve wall 104. Also shown are a peripheral susceptor 110 in the form of a zig-zag wire disposed within the sleeve wall 104 and defining the heating zone 120 and a central susceptor 111 shown as a pair of twisted wires. The adapter sleeve is depicted with a single stick retention structure 130 shown as a projection into the sleeve interior space located at the distal body end 104 and a single sleeve retention 140 structure shown as an outward-facing projection disposed on the proximal body end 103.

[0194] FIGS. 2A-2C show three views of an HNB stick 201 and an HNB adapter sleeve 101 according to an exemplary embodiment. In FIG. 2A, the HNB stick 201 comprises an aerosolgenerating substrate 202 and a non-substrate portion 203. The HNB stick 201 is not yet inserted into the adapter sleeve 101 . In FIG. 2B, the HNB stick 201 has been inserted into the HNB adapter sleeve for form an assembly 210 now ready to be inserted into the induction heating device. As shown, the aerosol-generating substrate 202 is placed within the heating zone 120. FIG. 2C shows a cross section through the combined HNB adapter sleeve and HNB stick. In this non-limiting embodiment, the peripheral susceptor is in the form of a zig-zag wire that extends beyond the end of the aerosol-generating substrate 202 to be vaporized in the HNB stick, but the central susceptor, in the form of twisted pair of wires, does not. The entirety of the heating zone 120 is defined by the peripheral susceptor and extends beyond the aerosol-generating substrate 202.

[0195] FIG. 3 shows a non-limiting embodiment of an induction heating coil 301 into which the HNB adapter sleeve 101 has been inserted. In some embodiments, the coil geometry is configured to efficiently heat the susceptor material. In other embodiments, heating efficiency can be sacrificed by using a larger diameter coil in favor of allowing a wider variety of HNB sticks to be used with the diameter of the different HNB adapter sleeves then configured to accommodate the different HNB sticks. The induction heating coil is the only component shown but is understood to be a part of a complete induction heating device. For example, as shown in FIG. 5 the coil can be housed inside the induction heating device but surrounding the HNB adapter sleeve.

[0196] FIG. 4A shows an exemplary central susceptor formed from a twisted pair of wires encapsulated by a central susceptor sheath formed from an inert material such as glass or a ceramic. FIG. 4B shows an exemplary peripheral susceptor in the form of a zig-zag susceptor wire. FIG. 4C shows an exemplary peripheral susceptor in the form of a sinusoidal wire that has rounded corners rather than sharp corners present in the zig-zag susceptor shown in FIG. 4B.

[0197] FIG. 5 shows the HNB stick 201 and HNB adapter sleeve 101 inserted into an induction heating device 501 to form a combined HNB apparatus 510. The use of the HNB adapter sleeve can be implemented in different ways in different non-limiting embodiments. For example, the HNB adapter sleeve may be inserted into the induction heating device and retained in the device by a sleeve retention structure such as a groove around the end cap. Several HNB sticks of the same type may then be consumed before the HNB adapter sleeve is removed for cleaning or to swap it for a different adapter sleeve to be used with a different HNB stick type. In another non-limiting embodiment, the adapter sleeve is configured to be a close fit on the HNB stick so that the HNB stick is first inserted into the HNB adapter sleeve and then the combined HNB sleeve and HNB adapter stick are inserted into the induction heating device. After each HNB stick is consumed, the used stick and HNB adapter sleeve are then removed again together.