Abstract: A heated aerosol-generating article including a rod of aerosol-generating substrate is provided, the rod of aerosol-generating substrate including: a first plug of homogenised tobacco material including an aerosol former; and a second plug of homogenised tobacco material including an aerosol former, where the first plug and the second plug are coaxially aligned in an abutting end-to-end relationship, the first plug being disposed downstream of the second plug, where the first plug and the second plug differ from each other in at least one of density and composition of aerosol former, such that the first plug has a lower activation temperature than the second plug, and where, upon heating of the aerosol-generating substrate, the first plug releases aerosol after a shorter time than the second plug.

Abstract: A method of controlling aerosol production in an aerosol-generating device is provided, the device including: a heater including a heating element to heat an aerosol-forming substrate, and a power source to provide power to the element, the method including: providing power to the element; and controlling the power provided such that in a first phase, the power is provided to the element such that a temperature of the element increases from an initial temperature to a first target temperature, in a second phase, the power is provided such that the temperature reduces to a second target temperature lower than the first temperature, and in a third phase, the power is provided such that the temperature increases to a third temperature, the first phase being ended in response to the element reaching the first target temperature or at a predetermined time following the element reaching the first target temperature.

Abstract: An aerosol-generating device is provided, including: a reservoir containing a liquid aerosol-forming substrate; an aerosol-generating element configured to generate an aerosol from the liquid aerosol-forming substrate, the aerosol-generating element including an electrically operated, vibrating transducer; an electrically operated pump configured to deliver the liquid aerosol-forming substrate from the reservoir to the aerosol-generating element; and control circuitry connected to the pump and the transducer, the control circuitry being configured to control operation of the pump in dependence on one or more operating parameters of the transducer. A method of operating the aerosol-generating device is also provided.

Abstract: A method of controlling heating in an aerosol-generating system including a heater is provided, the method including: providing a predetermined power to the heater and monitoring a resistance of the heater, the monitored resistance being indicative of a temperature of the heater; monitoring for a predetermined condition and upon detection of the predetermined condition, recording the resistance of the heater; determining a target resistance corresponding to a target temperature of the heater based on the recorded resistance; and detecting a dry puff when the recorded resistance increases above a threshold value or when a power required to maintain the heater at the target resistance decreases below a threshold value. An aerosol-generating system including a heater, a power supply, and a controller to perform the method, is also provided.

Abstract: An aerosol-generating system is provided, including: an aerosol-forming substrate; a first electrode and a second electrode spaced apart from the first electrode; an aerosol-generating device including a power supply, and a controller configured to connect to the first electrode and the second electrode; and a capacitor including the first electrode, the second electrode, and at least a portion of the aerosol-forming substrate, the controller being configured to supply an alternating voltage to the first electrode and the second electrode for dielectrically heating the aerosol-forming substrate, measure or determine an electrical property between the first electrode and the second electrode, and control heating of the aerosol-forming substrate based on the measured or determined electrical property.

Abstract: An aerosol-generating system is provided, including: an aerosol-generating device; a cartridge including a liquid agent, the cartridge being configured to be detachably connected to the aerosol-generating device; and an aerosol-generating article, the aerosol-generating device including a cavity configured to receive the aerosol-generating article including an aerosol-forming substrate, and a heating element configured to heat the aerosol-generating article received in the cavity, the heating element including a compartment wall, a first part of the compartment wall being located in the cavity and a second part of the compartment wall extending outside the cavity, and the second part of the compartment wall being configured to interact with the cartridge. A method of operating an aerosol-generating system is also provided.

Abstract: A charger for charging an aerosol-generating device is provided, the charger including: a housing defining a cavity to receive the device to be charged, the cavity having an opening; at least one electrical contact disposed in the cavity; and a cover slidable relative to the opening between open and closed positions, an inner surface of the cover facing the cavity when the cover is in the closed position, at least a portion of the inner surface of the cover defines a profiled engagement member having a leading edge and a trailing edge, and the profiled engagement member slopes into, or towards, the cavity when the respective moveable element is in the closed position, the slope increasing in a direction from the leading to the trailing edge. An aerosol-generating system including the charger and the device, and a method of using the system are also provided.

Abstract: An aerosol-generating article is provided, including an aerosol-forming substrate, the aerosol-forming substrate including a sheet, including: a fibrous material including cellulose fibres; one or more nicotine salts; sugar; and at least one aerosol former, the sheet having an aerosol former content of at least 15% by weight on a dry weight basis, and the sheet including no tobacco material.

Abstract: An aerosol-generating device is provided, including: a first housing portion defining a cavity configured to receive an aerosol-generating article; a second housing portion extending from the first housing portion, the second housing portion being movable relative to the first housing portion; an electric heater; a power supply; and a controller configured to supply power from the power supply to the electric heater, the electric heater being positioned within the first housing portion, and at least one of the power supply and the controller being positioned within the second housing portion. An aerosol-generating system including the aerosol-generating device and an aerosol-generating article is also provided.

Abstract: A heating element for an aerosol-generating device is provided, the heating element including: a first electrically resistive heating filament; and a support substrate on which the first electrically resistive heating filament is provided, the support substrate including a first carbon-fibre support layer comprising a carbon-fibre material. A method for forming a heating element for an aerosol-generating device is also provided. An aerosol-generating device including the heating element and a power source is also provided.

Abstract: A heater assembly for an aerosol-generating device is provided, the heater assembly including: a bushing defining an aperture at a first end of the bushing and a cavity at a second end of the bushing; and an elongate electrical heater extending from the first end of the bushing, in which a portion of the elongate electrical heater extends through the aperture and into the cavity. An aerosol-generating device, and an aerosol-generating system, are also provided.

Abstract: An aerosol-generating device is provided, including a device housing having a cavity configured to receive an aerosol-forming substrate; a heating element extending into the cavity and being configured to heat the aerosol-forming substrate received in the cavity; a movable cavity bottom, a position of the movable cavity bottom defining a length of the cavity; and a control configured to move the movable cavity bottom to a selected position within the cavity, the selected position being a longitudinal position at the heating element. An aerosol-generating system including the aerosol-generating device, and a method for preparing the aerosol-generating device, are also provided.

Abstract: An inhaler article includes a body extending along a longitudinal axis from a mouthpiece end to a distal end with an endpiece element at the distal end. A capsule cavity is defined within the body and extends along the longitudinal axis a cavity length. The capsule cavity includes a helical feature on or in an inner surface of the capsule cavity. The helical feature extends along the cavity length. An air inlet region is between the endpiece element and the capsule cavity. The air inlet region has an air inlet and an air passageway extending from the air inlet to the capsule cavity. A porous element defines a downstream end of the capsule cavity. A mouthpiece air channel extends from the capsule cavity, through the porous element to the mouthpiece end.

Abstract: An aerosol-generating device is provided, including: a housing; a cavity to receive an aerosol-generating article; an aperture at least partially defined by the housing and disposed at an end of the cavity for insertion of the article through the aperture; a cover element to move, with respect to the housing, between a closed position and an open position; a sensor to provide an electrical signal indicative of a position of the cover element with respect to the aperture; an indicator element to move relative to the sensor and the cover element when the cover element is moved between the closed and the open positions, the signal being determined by a position of the indicator element relative to the sensor; and a mechanical linkage translating movement of the cover element between the closed and the open positions into movement of the indicator element with respect to the sensor.

Abstract: A heater assembly for an aerosol-generating system is provided, the heater assembly including: a liquid aerosol-forming substrate including at least two compounds, the first compound having a first boiling point and the second compound having a second boiling point; a retention material containing the liquid aerosol-forming substrate; and a heating element configured to heat the retention material by passing a current along a length of the heating element, the heating element being formed from a band of material, and a cross-sectional area of the band of material progressively decreasing along a length of the band of material from a maximum cross-sectional area of the band of material at a first end of the band of material to a minimum cross-sectional area of the band of material at a second end of the band of material, to provide a temperature gradient along a surface of the retention material.

Abstract: An aerosol-generating system for heating a liquid aerosol-forming substrate is provided, the aerosol-generating system including: an aerosol-forming chamber; and a leakage preventer configured to prevent or reduce leakage of liquid aerosol condensate from the aerosol-generating system.

Abstract: Provided is a cartridge assembly for containment of a vaporizable substance to be used in an electronic vaporizer device. The cartridge assembly includes a cartridge and a susceptor element. The cartridge includes a base section and a side section coupled to the base section at a first end of the side section. An aperture is defined at a second end of the side section and the side section includes at least two apertures located in the side section, where the at least two apertures are configured to allow air to flow into an interior chamber of the cartridge when air flows out of the aperture defined at the second end. The susceptor element is located within the cartridge.