Field of the Invention
[0001] The present invention relates to a mouthpiece for a smoking substitute apparatus,
and to a flavourant dispenser for applying flavourant to the mouthpiece.
Background
[0002] The smoking of tobacco is generally considered to expose a smoker to potentially
harmful substances. It is generally thought that a significant amount of the potentially
harmful substances are generated through the heat caused by the burning and/or combustion
of the tobacco and the constituents of the burnt tobacco in the tobacco smoke itself.
[0003] Combustion of organic material such as tobacco is known to produce tar and other
potentially harmful byproducts. There have been proposed various smoking substitute
systems in order to avoid the smoking of tobacco.
[0004] Such smoking substitute systems can form part of nicotine replacement therapies aimed
at people who wish to stop smoking and overcome a dependence on nicotine.
[0005] Smoking substitute systems include electronic systems that permit a user to simulate
the act of smoking by producing an aerosol (also referred to as a "vapour") that is
drawn into the lungs through the mouth (inhaled) and then exhaled. The inhaled aerosol
typically bears nicotine and/or a flavourant without, or with fewer of, the odour
and health risks associated with traditional smoking.
[0006] In general, smoking substitute systems are intended to provide a substitute for the
rituals of smoking, whilst providing the user with a similar experience and satisfaction
to those experienced with traditional smoking and with combustible tobacco products.
[0007] The popularity and use of smoking substitute systems has grown rapidly in the past
few years. Although originally marketed as an aid to assist habitual smokers wishing
to quit tobacco smoking, consumers are increasingly viewing smoking substitute systems
as desirable lifestyle accessories. There are a number of different categories of
smoking substitute systems, each utilising a different smoking substitute approach.
[0008] One approach is the so-called "vaping" approach, in which a vaporisable liquid, typically
referred to (and referred to herein) as "e-liquid", is heated by a heating device
(referred to herein as an electronic cigarette or "e-cigarette" device) to produce
an aerosol vapour which is inhaled by a user. The e-liquid typically includes a base
liquid as well as nicotine and/or a flavourant. The resulting vapour therefore also
typically contains nicotine and/or a flavourant. The base liquid may include propylene
glycol and/or vegetable glycerine.
[0009] A typical e-cigarette device includes a mouthpiece, a power source (typically a battery),
a tank for containing e-liquid, as well as a heating device. In use, electrical energy
is supplied from the power source to the heating device, which heats the e-liquid
to produce an aerosol (or "vapour") which is inhaled by a user through the mouthpiece.
[0010] E-cigarettes can be configured in a variety of ways. For example, there are "closed
system" vaping smoking substitute systems, which typically have a sealed tank and
heating element. The tank is prefilled with e-liquid and is not intended to be refilled
by an end user. One subset of closed system vaping smoking substitute systems include
a main body which includes the power source, wherein the main body is configured to
be physically and electrically coupled to a consumable including the tank and the
heating element. In this way, when the tank of a consumable has been emptied, that
consumable is disposed of. The main body can be reused by connecting it to a new,
replacement, consumable. Another subset of closed system vaping smoking substitute
systems are completely disposable, and intended for one-use only.
[0011] There are also "open system" vaping smoking substitute systems which typically have
a tank that is configured to be refilled by a user. In this way the entire device
can be used multiple times.
[0012] An example vaping smoking substitute system is the myblu™ e-cigarette. The myblu™
e-cigarette is a closed system which includes a main body and a consumable. The main
body and consumable are physically and electrically coupled together by pushing the
consumable into the main body. The main body includes a rechargeable battery. The
consumable includes a mouthpiece, a sealed tank which contains e-liquid, as well as
a heater, which for this device is a heating filament coiled around a portion of a
wick. The wick is partially immersed in the e-liquid, and conveys e-liquid from the
tank to the heating filament. The device is activated when a microprocessor on board
the main body detects a user inhaling through the mouthpiece. When the device is activated,
electrical energy is supplied from the power source to the heating device, which heats
e-liquid from the tank to produce a vapour which is inhaled by a user through the
mouthpiece.
[0013] An alternative to the "vaping" approach is the so-called Heated Tobacco ("HT") approach
in which tobacco (rather than an e-liquid) is heated or warmed to release vapour.
HT is also known as "heat not burn" ("HNB"). The tobacco may be leaf tobacco or reconstituted
tobacco. In the HT approach the intention is that the tobacco is heated but not burned,
i.e. the tobacco does not undergo combustion.
[0014] The heating, as opposed to burning, of the tobacco material is believed to cause
fewer, or smaller quantities, of the more harmful compounds ordinarily produced during
smoking. Consequently, the HT approach may reduce the odour and/or health risks that
can arise through the burning, combustion and pyrolytic degradation of tobacco.
[0015] A typical HT smoking substitute system may include a device and a consumable. The
consumable may include the tobacco material. The device and consumable may be configured
to be physically coupled together. In use, heat may be imparted to the tobacco material
by a heating element of the device, wherein airflow through the tobacco material causes
components in the tobacco material to be released as vapour. A vapour may also be
formed from a carrier in the tobacco material (this carrier may for example include
propylene glycol and/or vegetable glycerine) and additionally volatile compounds released
from the tobacco. The released vapour may be entrained in the airflow drawn through
the tobacco.
[0016] As the vapour passes through the consumable (entrained in the airflow) from the location
of vapourisation to an outlet of the consumable (e.g. a mouthpiece), the vapour cools
and condenses to form an aerosol for inhalation by the user. The aerosol may contain
nicotine and/or flavour compounds.
[0017] For a smoking substitute device it is desirable to deliver nicotine into the user's
lungs, where it can be absorbed into the bloodstream. As explained above, in the so-called
"vaping" approach, e-liquid is heated by a heating device to produce an aerosol vapour
which is inhaled by a user. Many e-cigarettes also deliver flavour to the user to
enhance the experience. In such e-cigarettes, flavour compounds are contained in the
e-liquid that is heated. However, toxicology restrictions are placed on the amount
of flavour that can be contained in the e-liquid, and this can result in some e-liquid
flavours delivering a weak and underwhelming taste sensation to consumers in the pursuit
of safety. Further, there is a view that providing a flavourant as part of the e-liquid,
such that the flavourant is vaporised with the e-liquid, may be disadvantageous.
[0018] There may be a need for improved design of smoking substitute systems, in particular
in regards to the delivery of flavour to a user.
[0019] The present disclosure has been devised in the light of the above considerations.
Summary of the Invention
[0020] At its most general, the present invention relates to a mouthpiece for a smoking
substitute apparatus that is arranged to receive a liquid flavourant applied thereto,
and to distribute the flavourant over an area of the mouthpiece. In this manner, when
a user puts the mouthpiece in their mouth to use the smoking substitute apparatus,
flavourant located on the mouthpiece may produce a flavour for the user. In this manner,
flavour may be delivered to the user via flavourant on the mouthpiece, rather than
through a flavourant contained in an aerosol-former (e.g. e-liquid or tobacco material)
of the of the smoking substitute apparatus. As a result, there may be no need to include
any flavourants in the aerosol-former of the smoking substitute apparatus.
[0021] A flavourant may be applied to the mouthpiece when the user wishes to experience
flavour. The user may also apply an amount of flavourant to the mouthpiece according
to their taste, e.g. depending on whether they want to experience a strong flavour
or not. Flavourants having different flavours may be applied to the mouthpiece, so
that the user may experience different flavours, without having to otherwise modify
the smoking substitute apparatus. This may improve a versatility of the smoking substitute
apparatus.
[0022] According to a first aspect there is provided a mouthpiece for a smoking substitute
apparatus, the mouthpiece comprising: an outlet for conveying an aerosol generated
by the smoking substitute apparatus to a user; and a textured outer surface configured
to receive a liquid flavourant and distribute the liquid flavourant over the textured
outer surface through capillary action of the liquid flavourant on the textured outer
surface.
[0023] In this manner, due to the textured outer surface of the mouthpiece, liquid flavourant
may be retained on the surface of the mouthpiece. The textured outer surface may further
serve to distribute the liquid flavourant over an area of the mouthpiece via capillary
action of the liquid flavourant on the textured outer surface, e.g. the liquid flavourant
may be wicked across the textured outer surface. In this manner, after applying liquid
flavourant to the mouthpiece, liquid flavourant may be present over an area corresponding
to the textured outer surface. This may serve to provide a large contact area between
the flavourant on the mouthpiece and the user's tongue when the user puts the mouthpiece
in their mouth. As a result, flavour delivery to the user may be enhanced. The textured
outer surface may also enable a larger amount of liquid flavourant to be carried by
the mouthpiece than without any textured outer surface, which may enable flavourant
to be delivered to the user for a longer period of time.
[0024] The term "flavourant" is used to describe a compound or combination of compounds
that provide flavour and/or aroma. For example, the flavourant may be configured to
interact with a sensory receptor of a user (such as an olfactory or taste receptor).
The flavourant may include one or more volatile substances.
[0025] The liquid flavourant may be a flavourant that is provided in liquid form. The flavourant
may be natural or synthetic. For example, the flavourant may include menthol, liquorice,
chocolate, fruit flavour (including e.g. citrus, cherry etc.), vanilla, spice (e.g.
ginger, cinnamon) and tobacco flavour. The flavourant may be evenly dispersed or may
be provided in isolated locations and/or varying concentrations.
[0026] The textured outer surface may include a plurality of channels arranged to conduct
the liquid flavourant through capillary action of the liquid flavourant in the channels.
The channels may, for example, be in the form of grooves in the outer surface of the
mouthpiece. Liquid flavourant may be retained in the channels due to a surface tension
of the liquid flavourant in the channels. The plurality of channels may extend over
an area of the mouthpiece, so that liquid flavourant is distributed over that area,
via wicking (capillary action) of the flavourant through the channels. The channels
may be referred to as capillary channels.
[0027] The textured outer surface may include a plurality of protrusions arranged to form
the plurality of channels. In other words, the channels may be formed between adjacent
protrusions on the surface of the mouthpiece. For example, the plurality of protrusions
may include a set of identically shaped protrusions that are arranged in a regular
array on the surface of the mouthpiece. This may result in a set of channels which
are all oriented in the same direction. This may serve to conduct the liquid flavourant
in a preferential direction. Alternatively, the protrusions may be arranged in a substantially
random manner, which may result in random channel orientations.
[0028] The plurality of channels may include a first set of channels arranged in parallel
along a first direction. In this manner, the first set of channels may conduct liquid
flavourant along the first direction. This may serve to conduct liquid flavourant
towards an area of the mouthpiece that is likely to come into contact with the user's
tongue during use. This may also serve to provide an even distribution of the liquid
flavourant over an area of the mouthpiece.
[0029] The first direction may be substantially perpendicular to a flow direction of aerosol
through the outlet of the mouthpiece. Typically, aerosol may flow through the outlet
in a direction that is parallel to a longitudinal axis of the smoking substitute apparatus.
In use, the longitudinal axis of the smoking substitute apparatus may often be tilted
downwards. By orienting the first set of channels so that they are substantially perpendicular
to the flow direction of aerosol through the outlet, it may be possible to reduce
the risk of liquid flavourant dripping down along the mouthpiece during use. In some
cases, the first set of channels may be interconnected by a further channel, e.g.
by a channel extending along the longitudinal axis.
[0030] The plurality of channels may include a second set of channels arranged in parallel
along a second direction different from the first direction, the second set of channels
intersecting the first set of channels. In this manner, liquid flavourant may be conducted
along both the first and second directions, which may result in a more even distribution
of the flavourant over the mouthpiece. For example, the first and second sets of channels
may define a grid pattern on the surface of the mouthpiece. The second set of channels
may be in fluid communication with the first set of channels, so that liquid flavourant
present in the first and/or second set of channels may be wicked into the other set
of channels.
[0031] The textured outer surface may include a fluid receiving portion for receiving the
liquid flavourant, the fluid receiving portion being fluidly connected to the plurality
of channels. In this manner, liquid flavourant deposited in the fluid receiving portion
of the mouthpiece may be wicked through the plurality of channels so that it is distributed
over an area of the mouthpiece. Thus, a user may only need to apply a liquid flavourant
to a single area on the mouthpiece, i.e. to the fluid receiving portion. For example,
the fluid receiving portion may be a reservoir (e.g. cavity or recess) defined in
a surface of the mouthpiece, with one or more of the plurality of channels being arranged
to conduct fluid (e.g. liquid flavourant) out of the reservoir.
[0032] The mouthpiece may include an absorbent material for absorbing liquid flavourant.
In this manner, flavourant applied to the mouthpiece may be absorbed by the absorbent
material on the mouthpiece. This may enable the mouthpiece to absorb a larger amount
of flavourant, so that the mouthpiece may deliver flavourant to the user for a longer
period of time. The absorbent material may define the textured outer surface of the
mouthpiece, e.g. an outer surface of the absorbent material may correspond to the
textured outer surface.
[0033] Any suitable absorbent material may be used. For example the absorbent material may
be a cloth material, or a sponge-like material.
[0034] The absorbent material may be a porous plastic. This may facilitate cleaning of the
mouthpiece. This may also facilitate making of the mouthpiece, as the porous plastic
may be formed into a mouthpiece using a moulding technique. As an example, porous
plastics manufactured by Porex corporation may be used.
[0035] The mouthpiece may further include an engagement portion arranged to engage a dispensing
portion on a flavourant dispenser. The engagement portion may serve to align the flavourant
dispenser over the textured surface of the mouthpiece, to facilitate dispensing of
liquid flavourant onto the textured surface using the flavourant dispenser. For example,
the engagement portion may include a protrusion on the mouthpiece which is arranged
to engage the dispensing portion of the flavourant dispenser. Alternatively or additionally,
the engagement portion may include a recess or cavity in the surface of the mouthpiece,
which is arranged to receive a protrusion on the dispensing portion of the flavourant
dispenser.
[0036] The engagement portion may be in the form a key on the mouthpiece which is arranged
to engage a corresponding interface in the dispensing portion of the flavourant dispenser.
When the key is engaged in the interface, the dispensing portion may be configured
to dispense flavourant onto the mouthpiece. This may serve to prevent dispensing of
the liquid flavourant by the flavourant dispenser when a mouthpiece having the appropriate
key is not present.
[0037] The engagement portion of the mouthpiece may include a wall that is arranged to define
part of a receptacle on the mouthpiece for receiving liquid flavourant from the flavourant
dispenser. For example, the wall may serve to define part of the fluid receiving portion
of the textured outer surface. When the dispensing portion of the flavourant dispenser
is engaged with the engagement portion of the mouthpiece, the wall of the engagement
portion, together with a wall of the dispensing portion may form a receptacle for
receiving liquid flavourant dispensed by the flavourant dispenser. In this manner,
a predetermined volume of liquid flavourant may be dispensed into the receptacle.
Then, when the dispensing portion is removed from the mouthpiece, liquid flavourant
that was dispensed into the receptacle may exit the receptacle to be distributed across
the textured surface.
[0038] According to a second aspect of the invention, there is provided a smoking substitute
apparatus including a mouthpiece according to the first aspect of the invention. The
mouthpiece may be removably mounted on the smoking substitute apparatus. Alternatively,
the mouthpiece may be integrally formed as part of the smoking substitute apparatus.
[0039] The smoking substitute apparatus may be in the form of a consumable. The consumable
may be configured for engagement with a main body (i.e. so as to form a closed smoking
substitute system). For example, the consumable may comprise components of the system
that are disposable, and the main body may comprise non-disposable or non-consumable
components (e.g. power supply, controller, sensor, etc.) that facilitate the delivery
of aerosol by the consumable. In such an embodiment, the aerosol former (e.g. e-liquid)
may be replenished by replacing a used consumable with an unused consumable.
[0040] Alternatively, the smoking substitute apparatus may be a non-consumable apparatus
(e.g. that is in the form of an open smoking substitute system). In such embodiments
an aerosol former (e.g. e-liquid) of the system may be replenished by re-filling e.g.
a reservoir of the smoking substitute apparatus with the aerosol former (rather than
replacing a consumable component of the apparatus).
[0041] In light of this, it should be appreciated that some of the features described herein
as being part of the smoking substitute apparatus may alternatively form part of a
main body for engagement with the smoking substitute apparatus (i.e. when the smoking
substitute apparatus is in the form of a consumable).
[0042] Where the smoking substitute apparatus is in the form of a consumable, the main body
and the consumable may be configured to be physically coupled together. For example,
the consumable may be at least partially received in a recess of the main body, such
that there is an interference fit between the main body and the consumable. Alternatively,
the main body and the consumable may be physically coupled together by screwing one
onto the other, or through a bayonet fitting.
[0043] Thus, the smoking substitute apparatus may comprise one or more engagement portions
for engaging with a main body. In this way, one end of the smoking substitute apparatus
may be coupled with the main body, whilst an opposing end of the smoking substitute
apparatus may define a mouthpiece of the smoking substitute system.
[0044] The smoking substitute apparatus may comprise a reservoir configured to store an
aerosol former, such as an e-liquid. The e-liquid may, for example, comprise a base
liquid and e.g. nicotine. The base liquid may include propylene glycol and/or vegetable
glycerine. The e-liquid may be flavourless. That is, the e-liquid may not contain
any flavourants and may consist solely of a base liquid of propylene glycol and/or
vegetable glycerine and nicotine.
[0045] The reservoir may be in the form of a tank. At least a portion of the tank may be
translucent. For example, the tank may comprise a window to allow a user to visually
assess the quantity of e-liquid in the tank. A housing of the smoking substitute apparatus
may comprise a corresponding aperture (or slot) or window that may be aligned with
a translucent portion (e.g. window) of the tank. The reservoir may be referred to
as a "clearomizer" if it includes a window, or a "cartomizer" if it does not.
[0046] The smoking substitute apparatus may comprise a passage for fluid flow therethrough.
The passage may extend through (at least a portion of) the smoking substitute apparatus,
between openings that may define an inlet and an outlet of the passage. The outlet
may be at a mouthpiece of the smoking substitute apparatus. In this respect, a user
may draw fluid (e.g. air) into and through the passage by inhaling at the outlet (i.e.
using the mouthpiece). The passage may be at least partially defined by the tank.
The tank may substantially (or fully) define the passage. In this respect, the tank
may surround the passage.
[0047] The smoking substitute apparatus may comprise an aerosol-generator. The aerosol generator
may comprise a wick. The aerosol generator may further comprise a heater. The wick
may comprise a porous material. A portion of the wick may be exposed to fluid flow
in the passage. The wick may also comprise one or more portions in contact with liquid
stored in the reservoir. For example, opposing ends of the wick may protrude into
the reservoir and a central portion (between the ends) may extend across the passage
so as to be exposed to fluid flow in the passage. Thus, fluid may be drawn (e.g. by
capillary action) along the wick, from the reservoir to the exposed portion of the
wick.
[0048] The heater may comprise a heating element, which may be in the form of a filament
wound about the wick (e.g. the filament may extend helically about the wick). The
filament may be wound about the exposed portion of the wick. The heating element may
be electrically connected (or connectable) to a power source. Thus, in operation,
the power source may supply electricity to (i.e. apply a voltage across) the heating
element so as to heat the heating element. This may cause liquid stored in the wick
(i.e. drawn from the tank) to be heated so as to form a vapour and become entrained
in fluid flowing through the passage. This vapour may subsequently cool to form an
aerosol in the passage.
[0049] The smoking substitute apparatus (or main body engaged with the smoking substitute
apparatus) may comprise a power source. The power source may be electrically connected
(or connectable) to a heater of the smoking substitute apparatus (e.g. when engaged
with the main body). The power source may be a battery (e.g. a rechargeable battery).
A connector in the form of e.g. a USB port may be provided for recharging this battery.
[0050] When the smoking substitute apparatus is in the form of a consumable, the smoking
substitute apparatus may comprise an electrical interface for interfacing with a corresponding
electrical interface of the main body. One or both of the electrical interfaces may
include one or more electrical contacts. Thus, when the main body is engaged with
the consumable, the electrical interface may be configured to transfer electrical
power from the power source to a heater of the consumable.
[0051] The electrical interface may also be used to identify the smoking substitute apparatus
(in the form of a consumable) from a list of known types. For example, the consumable
may have a certain concentration of nicotine and the electrical interface may be used
to identify this. The electrical interface may additionally or alternatively be used
to identify when a consumable is connected to the main body.
[0052] Again, where the smoking substitute apparatus is in the form of a consumable, the
main body may comprise an interface, which may, for example, be in the form of an
RFID reader, a barcode or QR code reader. This interface may be able to identify a
characteristic (e.g. a type) of a consumable engaged with the main body. In this respect,
the consumable may include any one or more of an RFID chip, a barcode or QR code,
or memory within which is an identifier and which can be interrogated via the interface.
[0053] The smoking substitute apparatus or main body may comprise a controller, which may
include a microprocessor. The controller may be configured to control the supply of
power from the power source to the heater of the smoking substitute apparatus (e.g.
via the electrical contacts). A memory may be provided and may be operatively connected
to the controller. The memory may include non-volatile memory. The memory may include
instructions which, when implemented, cause the controller to perform certain tasks
or steps of a method.
[0054] The main body or smoking substitute apparatus may comprise a wireless interface,
which may be configured to communicate wirelessly with another device, for example
a mobile device, e.g. via Bluetooth®. To this end, the wireless interface could include
a Bluetooth® antenna. Other wireless communication interfaces, e.g. WiFi®, are also
possible. The wireless interface may also be configured to communicate wirelessly
with a remote server.
[0055] A puff sensor may be provided that is configured to detect a puff (i.e. inhalation
from a user). The puff sensor may be operatively connected to the controller so as
to be able to provide a signal to the controller that is indicative of a puff state
(i.e. puffing or not puffing). The puff sensor may, for example, be in the form of
a pressure sensor or an acoustic sensor. That is, the controller may control power
supply to the heater of the consumable in response to a puff detection by the sensor.
The control may be in the form of activation of the heater in response to a detected
puff. That is, the smoking substitute apparatus may be configured to be activated
when a puff is detected by the puff sensor. When the smoking substitute apparatus
is in the form of a consumable, the puff sensor may form part of the consumable or
the main body.
[0056] According to a third aspect of the invention, there is provided a flavourant dispenser
for dispensing liquid flavourant onto an outer surface of a mouthpiece of a smoking
substitute apparatus, the flavourant dispenser comprising: a reservoir for holding
a liquid flavourant; and a dispensing portion arranged to engage the outer surface
of the mouthpiece and to dispense a predetermined volume of liquid flavourant from
the reservoir onto the outer surface of the mouthpiece when the dispensing portion
engages the outer surface of the mouthpiece.
[0057] In this manner, a user may engage the dispensing portion of the flavourant dispenser
with the outer surface of the mouthpiece to dispense a predetermined volume of liquid
flavourant thereon, so that flavourant may be delivered to the user when they use
the mouthpiece. This may avoid the liquid flavourant being accidentally dispensed
when the dispensing portion is not engaged with the mouthpiece.
[0058] Dispensing a predetermined volume of liquid flavourant may avoid an excessive amount
of liquid flavourant being applied to the mouthpiece, which could result in liquid
flavourant dripping off the mouthpiece. The predetermined volume may be set to a volume
of liquid flavourant that the mouthpiece is capable of holding. For example, where
the mouthpiece includes a textured outer surface for receiving liquid flavourant,
the predetermined volume may correspond to an amount of liquid flavourant that the
textured outer surface is capable of holding.
[0059] The reservoir may be any suitable container for receiving and holding liquid flavourant.
The reservoir may be in fluid communication with the dispensing portion, so that liquid
flavourant from the reservoir may be dispensed by the dispensing portion. The dispensing
portion may include an outlet through which liquid flavourant may be dispensed.
[0060] In some embodiments, the dispensing portion may include a valve that is openable
to dispense liquid flavourant from the reservoir; the dispensing portion may be arranged
to engage an engagement portion of the outer surface of the mouthpiece; and the valve
may be opened by engagement between the dispensing portion and the engagement portion
on the outer surface of the mouthpiece. In this manner, when the dispensing portion
is engaged with the outer surface of the mouthpiece, the engagement portion of the
outer surface of the mouthpiece may engage the dispensing portion (e.g. a corresponding
engagement portion of the dispensing portion), which causes the valve to open so that
liquid flavourant may be dispensed onto the outer surface of the mouthpiece. Thus,
liquid flavourant may be automatically dispensed onto the outer surface of the mouthpiece
when the dispensing portion is engaged with the mouthpiece. This may facilitate applying
liquid flavourant to the mouthpiece.
[0061] The valve may be movable between an open and a closed position. The valve may be
disposed between the reservoir and the outlet of the dispensing portion. Thus, when
the valve is in the open position, the reservoir may be in fluid communication with
the outlet so that liquid flavourant from the reservoir may be dispensed; when the
valve is in the closed position, the valve may block liquid flavourant from exiting
the reservoir via the outlet of the dispensing portion.
[0062] The valve may be biased towards to closed position, to prevent liquid flavourant
from leaking when the flavourant dispenser is not in use. The valve may be biased
using any suitable mechanism, e.g. via a spring or the like.
[0063] The dispensing portion may include an interface which is configured to receive the
engagement portion of the mouthpiece in the form of a key. When the key is engaged
in the interface of the dispensing portion, the dispensing portion may be configured
to dispense flavourant onto the mouthpiece. This may serve to prevent dispensing of
the liquid flavourant by the flavourant dispenser when a mouthpiece having the appropriate
key is not present.
[0064] The dispensing portion may include a wall arranged to form part of a receptacle for
receiving liquid flavourant when the dispensing portion of the flavourant dispenser
is engaged with the engagement portion of the mouthpiece. When the dispensing portion
of the flavourant dispenser is engaged with the engagement portion of the mouthpiece,
the wall of the dispensing portion, together with a wall of the engagement portion
of the mouthpiece, may form a receptacle for receiving liquid flavourant dispensed
by the flavourant dispenser. The receptacle may have a volume corresponding to the
predetermined volume of liquid flavourant dispensed by the dispensing portion. Thus,
when the dispensing portion engages the engagement portion of the outer surface of
the mouthpiece, the valve is opened so that liquid flavourant is dispensed from the
dispensing portion into the receptacle on the mouthpiece formed by the wall of the
dispensing portion and a wall of the engagement portion of the mouthpiece. Then, when
the dispensing portion is removed from the mouthpiece, liquid flavourant that was
dispensed into the receptacle may exit the receptacle to be distributed across the
surface of the mouthpiece, e.g. via a textured outer surface of the mouthpiece.
[0065] According to a fourth aspect of the invention, there is provided a smoking substitute
kit including a smoking substitute apparatus according to the second aspect of the
invention, and a flavourant dispenser according to the third aspect of the invention.
The dispensing portion of the flavourant dispenser may be arranged to engage the outer
surface of the mouthpiece of the smoking substitute apparatus and to dispense a predetermined
volume of liquid flavourant from the reservoir onto the outer surface of the mouthpiece
when the dispensing portion engages the outer surface of the mouthpiece.
[0066] Where the dispensing portion includes a valve, and the outer surface of the mouthpiece
includes an engagement portion: the dispensing portion may be arranged to engage an
engagement portion of the outer surface of the mouthpiece; and the valve may be opened
by engagement between the dispensing portion and the engagement portion on the outer
surface of the mouthpiece.
[0067] The engagement portion of the mouthpiece may be in the form a key on the mouthpiece
which is arranged to engage a corresponding interface in the dispensing portion of
the flavourant dispenser. When the key is engaged in the interface, the dispensing
portion may be configured to dispense flavourant onto the mouthpiece. This may serve
to prevent dispensing of the liquid flavourant by the flavourant dispenser when a
mouthpiece having the appropriate key is not present.
[0068] The engagement portion of the mouthpiece may include a first wall that is arranged
to define a first part of a receptacle on the mouthpiece for receiving liquid flavourant
from the flavourant dispenser, and the dispensing portion may include a second wall
arranged to form a second part of the receptacle. In this manner, when the dispensing
portion of the mouthpiece is engaged with the engagement portion, the first and second
walls may together form the receptacle in which liquid flavourant is dispensed by
the dispensing portion. A volume of the receptacle may correspond to the predetermined
volume of liquid flavourant dispensed by the dispensing portion.
[0069] According to a fifth aspect of the invention, there is provided a method of delivering
flavour to a user of a smoking substitute apparatus, the method including: applying
a liquid flavourant to an outer surface of a mouthpiece of the smoking substitute
apparatus; using, by the user, the smoking substitute apparatus. In this manner, flavourant
applied to the outer surface of the mouthpiece may be delivered to the user when they
use the smoking substitute apparatus. Using the smoking substitute apparatus may include
inhaling, by the user, an aerosol generated by the smoking substitute apparatus.
[0070] The method of the fifth aspect of the invention may be used with any of the previous
aspects of the invention.
[0071] Applying the liquid flavourant to the outer surface of the mouthpiece may include
using a flavourant dispenser of the third aspect of the invention. For example, the
dispensing portion of the flavourant dispenser may be engaged with the outer surface
of the mouthpiece to dispense a predetermined volume of flavourant onto the outer
surface of the mouthpiece. Where the dispensing portion includes a valve, and the
outer surface of the mouthpiece includes an engagement portion, applying the liquid
flavourant may include engaging the dispensing portion with the engagement portion
of the outer surface of the mouthpiece, to open the valve and dispense liquid flavourant
onto the outer surface of the mouthpiece.
[0072] Where the engagement portion of the mouthpiece includes a first wall that is arranged
to define a first part of a receptacle on the mouthpiece for receiving liquid flavourant
from the flavourant dispenser, and the dispensing portion includes a second wall arranged
to form a second part of the receptacle, applying the liquid flavourant may include
engaging the dispensing portion with the engagement portion of the outer surface of
the mouthpiece to form, with the first wall and second wall, a receptacle for receiving
liquid flavourant dispensed by the dispensing portion.
[0073] Where the mouthpiece is removably mountable on the smoking substitute apparatus,
the method may further include mounting the mouthpiece on the smoking substitute apparatus
(e.g. prior to applying the liquid flavourant).
[0074] The invention includes the combination of the aspects and preferred features described
except where such a combination is clearly impermissible or expressly avoided.
Summary of the Figures
[0075] So that the invention may be understood, and so that further aspects and features
thereof may be appreciated, embodiments illustrating the principles of the invention
will now be discussed in further detail with reference to the accompanying figures,
in which:
Figure 1A is a front view of a smoking substitute system, according to a first embodiment
of the invention, in an engaged position;
Figure 1B is a front view of the smoking substitute system of the first embodiment
in a disengaged position;
Figure 1C is a cross-sectional view of a smoking substitute apparatus of the first
embodiment;
Figure 2 is a schematic side view of a smoking substitute apparatus according to an
embodiment of the invention;
Figure 3 is an illustration of textured outer surfaces that may be included on a mouthpiece
according to an embodiment of the invention;
Figures 4A-4C show schematic cross-sectionals views of a flavourant dispenser according
to an embodiment of the invention, illustrating a process of dispensing a flavourant
onto a mouthpiece according to an embodiment of the invention; and
Figures 5A and 5B show top views of an engagement portion of a mouthpiece according
to embodiments of the invention.
Detailed Description of the Invention
[0076] Aspects and embodiments of the present invention will now be discussed with reference
to the accompanying figures. Further aspects and embodiments will be apparent to those
skilled in the art. All documents mentioned in this text are incorporated herein by
reference.
[0077] Figures 1A and 1B illustrate a smoking substitute system in the form of an e-cigarette
system 101. The system 101 comprises an e-cigarette device defining a main body 102
of the system 101, and an smoking substitute apparatus in the form of an e-cigarette
consumable (or "pod") 103. In the illustrated embodiment the consumable 103 (smoking
substitute apparatus) is removable from the main body (e-cigarette device), so as
to be a replaceable component of the system 101. In other words, the e-cigarette system
101 is a closed system.
[0078] As is apparent from Figures 1A and 1B, the consumable 103 is configured to engage
the main body 102. Figure 1A shows the main body 102 and the consumable 103 in an
engaged state, whilst Figure 1B shows the main body 102 and the consumable 103 in
a disengaged state. When engaged, a portion of the consumable 103 is received in a
cavity of the main body 102 and is retained in the engaged position by way of a snap-engagement
mechanism. In other embodiments, the main body 102 and consumable 103 may be engaged
by screwing one into (or onto) the other, through a bayonet fitting, or by way of
an interference fit.
[0079] The system 101 is configured to vaporise an aerosol-former, which in the illustrated
embodiment, is in the form of a nicotine-based e-liquid 104. The e-liquid 104 comprises
nicotine and a base liquid including propylene glycol and/or vegetable glycerine.
In the present embodiment, the e-liquid 104 is flavourless (and does not include any
added flavourant). That is, if the e-liquid 104 were to be inhaled (i.e. in aerosol
form) by a user, it would not have a particularly perceptible flavour or taste.
[0080] As is more apparent from Figure 1C, this e-liquid 104 is stored within a reservoir
in the form of a tank 105 that forms part of the consumable 103. In the illustrated
embodiment, the consumable 103 is a "single-use" consumable 103. That is, upon exhausting
the e-liquid 104 in the tank 105, the intention is that the user disposes of the entire
consumable 103. In other embodiments, the e-liquid (i.e. aerosol former) may be the
only part of the system that is truly "single-use". That is, the tank may be refillable
with e-liquid or the e-liquid may be stored in a non-consumable component of the system.
For example, the e-liquid may be stored in a tank located in the main body or stored
in another component that is itself not single-use (e.g. a refillable cartomizer).
[0081] The tank 105 surrounds, and thus defines a portion of, a passage 106 that extends
between an inlet 107 and an outlet 108 at opposing ends of the consumable 103. In
this respect, the passage comprises an upstream end at the end of the consumable 103
that engages with the main body 102, and a downstream end at an opposing end of the
consumable 103 that comprises a mouthpiece 109 of the system 101. When the consumable
103 is engaged with the main body 102, a user can inhale (i.e. take a puff) via the
mouthpiece 109 so as to draw air through the passage 106, and so as to form an airflow
(indicated by arrows) in a direction from the inlet 107 to the outlet 108 of the passage
106. Although not illustrated, the passage 106 may be partially defined by a tube
(e.g. a metal tube) extending through the consumable 103. The passage 106 is in fluid
communication with a gap defined between the consumable 103 and the main body 102
(when engaged) such that air outside of the system 101 is drawn into the passage 106
(during an inhale).
[0082] The smoking substitute system 101 is configured to vaporise the e-liquid 104 for
inhalation by a user. To provide this, the consumable 103 comprises a heater having
of a porous wick 110 and a resistive heating element in the form of a heating filament
111 that is helically wound around a portion of the porous wick 110. The porous wick
110 extends across the passage 106 (i.e. transverse to a longitudinal axis of the
passage106) and opposing ends of the wick 110 extend into the tank 105 (so as to be
submerged in the e-liquid 104). In this way, e-liquid 104 contained in the tank 105
is conveyed from the opposing ends of the porous wick 110 to a central portion of
the porous wick 110 so as to be exposed to the airflow in the passage 106 (i.e. caused
by a user inhaling).
[0083] The helical filament 111 is wound about this exposed central portion of the porous
wick 110 and is electrically connected to an electrical interface in the form of electrical
contacts 112 mounted at the end of the consumable that is proximate the main body
102 (when engaged). When the consumable 103 is engaged with the main body 102, the
electrical contacts 112 contact corresponding electrical contacts (not shown) of the
main body 102. The main body electrical contacts are electrically connected to a power
source (not shown) of the main body 102, such that (in the engaged position) the filament
111 is electrically connected to the power source. In this way, power can be supplied
by the main body 102 to the filament 111 in order to heat the filament 111. This heat
is transferred from the filament 111 to the porous wick 110 which causes e-liquid
104 conveyed by the porous wick 110 to increase in temperature to a point at which
it vaporises. The vaporised e-liquid becomes entrained in the airflow and, between
the vaporisation point at the filament 111 and the outlet 108 of the passage 106,
condenses to form an aerosol. This aerosol is then inhaled, via the mouthpiece 109,
by a user of the system 101.
[0084] The power source of the main body 102 may be in the form of a battery (e.g. a rechargeable
battery). The main body 102 may comprise a connector in the form of e.g. a USB port
for recharging this battery. The main body 102 may also comprise a controller that
controls the supply of power from the power source to the main body electrical contacts
(and thus to the filament 111). That, is the controller may be configured to control
a voltage applied across the main body electrical contacts, and thus the voltage applied
across the filament 111. In this way, the filament 111 may only be heated under certain
conditions (e.g. during a puff and/or only when the system is in an active state).
In this respect, the main body 102 may include a puff sensor (not shown) that is configured
to detect a puff (i.e. inhalation). The puff sensor may be operatively connected to
the controller so as to be able to provide a signal, to the controller, which is indicative
of a puff state (i.e. puffing or not puffing). The puff sensor may, for example, be
in the form of a pressure sensor or an acoustic sensor.
[0085] Although not shown, the main body 102 and consumable 103 may comprise a further interface
which may, for example, be in the form of an RFID reader, a barcode or QR code reader.
This interface may be able to identify a characteristic (e.g. a type) of a consumable
103 engaged with the main body 102. In this respect, the consumable 103 may include
any one or more of an RFID chip, a barcode or QR code, or memory within which is an
identifier and which can be interrogated via the interface.
[0086] The mouthpiece 109 of the consumable 103 includes a textured outer surface 120 which
is arranged to receive a liquid flavourant and distribute the liquid flavourant across
the textured outer surface 120. In the example shown, the textured outer surface 120
includes a plurality of criss-crossing channels. The channels are formed as fine grooves
in the outer surface of the mouthpiece 109. Liquid flavourant applied to textured
outer surface 120 may be retained in the channels due to surface tension of the liquid
flavourant in the channels, and may be distributed across the textured outer surface
120 via capillary action of the liquid flavourant in the channels. In this manner,
when a drop of liquid flavourant is applied to the textured outer surface 120, the
liquid flavourant may be distributed over an area corresponding to the textured outer
surface 120. The textured outer surface 120 is disposed adjacent to the outlet 108
of the mouthpiece, so that it may come into contact with the user's tongue in use.
In this manner, liquid flavourant held on the textured outer surface 120 may produce
a flavour in the user's mouth.
[0087] Figure 2 shows a schematic side view of a smoking substitute apparatus, in the form
of consumable 200 according to an embodiment of the invention. The consumable 200
may be similar in configuration to the mouthpiece 103 described above, e.g. it may
be configured for engagement with a main body to form a smoking substitute system.
The consumable 200 includes a mouthpiece 202 having an outlet 204 for conveying an
aerosol generated by the smoking substitute system to a user. Adjacent to the outlet
204 is a textured outer surface 206 for receiving a liquid flavourant.
[0088] The textured outer surface 206 includes a plurality of channels formed as fine grooves
in the outer surface of the mouthpiece 202. The plurality of channels includes a first
set of channels 208 which are arranged in parallel and oriented along a first direction
that is substantially perpendicular to a flow direction of aerosol through the outlet
204 of the mouthpiece 202. The direction of flow of aerosol through the outlet 204
is illustrated by arrow 210, and corresponds to a longitudinal direction of the consumable
200. The first set of channels 208 are interconnected by a longitudinal channel 212
which extends in the longitudinal direction of the consumable 200, i.e. the first
set of channels 208 are in fluid communication via the longitudinal channel 212. The
textured outer surface 206 further includes a fluid receiving portion 214 which is
arranged at an intersection between the longitudinal channel 212 and a first one of
the first set of channels 208. The fluid receiving portion 214 may be a shallow cavity
or recess formed in the outer surface of the mouthpiece 202. The fluid receiving portion
214 is in fluid communication with the longitudinal channel 212 and the first one
of the first set of channels 208.
[0089] The longitudinal channel 212 and the channels in the first set of channels 208 may
be similar to the channels described above in relation to the textured outer surface
120. In particular, they are arranged to receive a liquid flavourant, and to wick
liquid flavourant along their length through capillary action. Liquid flavourant deposited
in the fluid receiving portion 214 may be wicked out of the fluid receiving portion
214 and into the plurality of channels. The longitudinal channel 212 may serve to
convey liquid flavourant from the fluid receiving portion to each of the first set
of channels 208. Thus, liquid flavourant may be substantially evenly distributed throughout
the plurality of channels. In this manner, liquid flavourant deposited in the flavourant
receiving portion 214 may be distributed throughout the plurality of channels (including
the longitudinal channel 212 and the first set of channels). Thus, a user may only
need apply liquid flavourant to the fluid receiving portion 214. The textured outer
surface 206 may provide a large area containing flavourant which may come into contact
with the user's mouth (e.g. tongue), which may enable effective delivery of flavourant
to the user.
[0090] In use, the consumable may typically be held so that the longitudinal direction of
the consumable 200 (i.e. the direction indicated by arrow 210) is tilted along a downwards
angle. As the first set of channels 208 is substantially perpendicular to the longitudinal
direction of the consumable 200, this may serve to prevent liquid flavourant in the
first set of channels 208 from dripping downwards, which could cause liquid flavourant
to drip off the mouthpiece 202. This may avoid liquid flavourant coming into contact
with electrical components in the smoking substitute apparatus. As only one longitudinal
channel 208 is provided, a comparatively small amount of liquid flavourant may be
held in the longitudinal channel 208 relative to the first set of channels 208. This
may reduce the risk of flavourant liquid dripping out of the longitudinal channel
208.
[0091] Figure 3 illustrates a series of different textured outer surfaces that may be included
in a mouthpiece 300 according to the invention. The mouthpiece 300 forms part of a
consumable 302, which may be similar in configuration to the consumable 103 described
above.
[0092] As illustrated in window 304 of Figure 3, the mouthpiece 300 may have a textured
outer surface comprising a plurality of randomly arranged protrusions. The randomly
arranged protrusions form a series of channels (gaps) between them, the channels being
dimensioned to wick liquid flavourant deposited on the surface of the mouthpiece 300.
In this manner, liquid flavourant may be substantially evenly distributed across a
surface of the mouthpiece 300.
[0093] Alternatively, as illustrated in window 306 of Figure 3, the mouthpiece 300 may have
a textured outer surface comprising a regular array of protrusions. In the example
shown, the protrusions are substantially cylindrical in shape. The array of protrusions
forms a series of channels between the protrusions, the channels being dimensioned
to wick liquid flavourant deposited on the surface of the mouthpiece 300. In this
manner, liquid flavourant may be substantially evenly distributed across a surface
of the mouthpiece 300.
[0094] As another example, as shown in window 308 of Figure 3, the mouthpiece 300 may include
a series of criss-crossing channels which are formed as grooves in the outer surface
of the mouthpiece 300. The criss-crossing channels are formed by a first set of parallel
channels oriented along a first direction, and a second set of parallel channels oriented
along a second direction perpendicular to the first direction. In this manner, the
criss-crossing channels form a grid on the outer surface of the mouthpiece 300. In
this manner, liquid flavourant may be wicked along the channels in the first and second
directions, to provide a substantially even distribution of liquid flavourant over
an area of the mouthpiece.
[0095] Figures 4A-4C show schematic cross-sectional views of a flavourant dispenser 400
according to an embodiment of the invention. The flavourant dispenser 400 may be used
to dispense flavourant onto a mouthpiece of a smoking substitute apparatus, for flavour
delivery to a user.
[0096] The flavourant dispenser 400 includes a reservoir 402 for holding a liquid flavourant
404. The reservoir 402 is disposed in an outer housing 418 of the flavourant dispenser
400, the outer housing 418 forming a sidewall of the reservoir 402. The flavourant
dispenser further includes a dispensing portion 406 for dispensing liquid flavourant
from the reservoir 402. The dispensing portion 406 includes an outlet 408 through
which liquid flavourant 404 may be dispensed, and a ball valve 410. The ball valve
410 is movable between a closed position in which the ball valve 410 blocks the outlet
408 (Figures 4A, 4C), and an open position where the ball valve 410 does not block
the outlet 408 (Figure 4B), so that liquid flavourant 404 from the reservoir can exit
via the outlet 408. The outlet 408 is defined by a ring 409, in which the ball valve
410 is held when it is in the closed position.
[0097] The ball valve 410 is mounted on a plate 412 disposed in the outer housing 418, the
plate 412 forming a first end of the reservoir 402 adjacent the dispensing portion
406. The plate 412 is movable with the ball valve 410 between the open and closed
positions. The plate includes a series of apertures 413. When the ball valve 410 is
in the closed position, the plate 412 abuts against a surface of the ring 409, so
that the apertures 413 are blocked. When the ball valve 410 is in the open position,
the plate 412 is spaced from the ring 409, so that the apertures 413 are no longer
blocked, and liquid flavourant 404 from the reservoir can exit the flavourant dispenser
via the apertures 413 and the outlet 408.
[0098] The flavourant dispenser 400 further includes a piston 414 mounted in the outer housing
418 of the flavourant dispenser 400, such that the piston 414 forms a second end of
the reservoir 402, opposite the first end of the reservoir 402. The piston 414 is
movable within the reservoir 402 along a longitudinal direction of the reservoir 402.
A spring 416 is mounted between an outer housing 418 of the flavourant dispenser 400
and the piston 414, and arranged to push the piston 414 towards the outlet 408. In
this manner, liquid flavourant 404 in the reservoir is urged towards the outlet 408
by the piston 414, under a biasing force of the spring 416. This causes the plate
412 to be pressed against the surface of the ring 409, so that the ball valve 410
blocks the outlet 408 and the apertures 413 are blocked by the surface of the ring
409. Thus, the spring 416 biases the ball valve 408 towards the closed position. This
may prevent liquid flavourant 404 from leaking out of the flavourant dispenser 400
when the dispenser is not in use. The outer housing 418 further includes an aperture
420 arranged to allow pressure equalisation inside the housing 418 due to movement
of the piston 414.
[0099] The flavourant dispenser 400 is designed for use with a mouthpiece 426. In particular,
the flavourant dispenser 400 is configured to dispense flavourant 404 onto the mouthpiece
426 when the mouthpiece 428 is brought into engagement with the flavourant dispenser
400, as described below.
[0100] The mouthpiece 426 may, for example, be similar to mouthpiece 109 described above.
For illustration purposes, only a portion of the mouthpiece 426 is shown in Figures
4A-4C. The mouthpiece 426 may be mounted on, or form part of, a smoking substitute
apparatus. The mouthpiece 426 includes an engagement portion 428 which includes a
plurality of sidewalls 430 arranged in a ring around a central protrusion 432. Figures
5A and 5B show top views of possible configurations of the engagement portion 428.
Figure 5A shows a top view of an engagement portion 428a including a plurality of
sidewalls 430a arranged in a circular ring around central protrusion 432a. As can
be seen, some of the sidewalls 430a have different thicknesses. Gaps 434a are formed
between adjacent sidewalls 430a. Figure 5B shows a top view of an engagement portion
428b including a plurality of sidewalls 430b arranged in a hexagonal ring around central
protrusion 432b. As can be seen, some of the sidewalls 430b have different thicknesses.
Gaps 434b are formed between adjacent sidewalls 430b.
[0101] The dispensing portion 406 of the flavourant dispenser 400 includes a set of recesses
422 defined between the ring 409 and a sidewall 424 of the outer housing 418. The
recesses 422 are arranged to receive the engagement portion 428 of the mouthpiece
426. In particular, the recesses 422 are arranged to receive the plurality of sidewalls
430 of the engagement portion 428 of the mouthpiece 426. The set of recesses 422 may
be shaped and arranged to receive a specific engagement portion 428, e.g. engagement
portion 428a or 428b. Thus, for instance, the recesses 422 may be arranged in a circular
or a hexagonal ring, and the set of recesses 422 may include recesses having different
widths to accommodate sidewalls 430 having different widths. The ring 409 is configured
to receive the central protrusion 432 when the sidewalls 430 are engaged in the recesses
422.
[0102] The dispensing portion 406 is arranged such that, when the sidewalls 430 are received
in the recesses 422, the sidewalls 430 abut against the plate 412 to press the plate
412 away from the ring 409. This enables flavourant to flow through the apertures
413 in the plate 412 and through the outlet 408, so that flavourant may be dispensed.
In this manner, engagement between the dispensing portion 406 and the engagement portion
428 on the mouthpiece 426 causes flavourant 404 to be dispensed from the flavourant
dispenser 400.
[0103] As a result of the arrangement of the set of recesses 422, the dispensing portion
426 is configured for engagement with a mouthpiece having a specifically arranged
engagement portion. In some cases, the dispensing portion 426 and engagement portion
of the mouthpiece may be arranged so that the dispensing portion 426 and the engagement
portion can only be engaged when they are in a specific orientation. In this manner,
the engagement portion of the mouthpiece may be considered as a key which is arranged
for engagement with the dispensing portion.
[0104] We will now describe a process of dispensing flavourant onto the mouthpiece 426 using
flavourant dispenser 400, with reference to Figures 4A-4C.
[0105] In Figure 4A, the ball valve 410 is in the closed position and the reservoir 402
contains liquid flavourant 404. The ball valve 410 is maintained in the closed position,
via the piston 414 which presses the liquid flavourant 404 against the plate 412,
under action of the spring 416. The flavourant dispenser 400 is approached towards
the engagement portion 428 of the mouthpiece 426, as indicated by arrow 440.
[0106] In Figure 4B, the dispensing portion 406 of the flavourant dispenser 400 is engaged
with the engagement portion 428 of the mouthpiece 426. In particular, the sidewalls
430 of the engagement portion 428 are received in the recesses 422 of the dispensing
portion 406, and the central protrusion 432 is received in the ring 409. In this configuration,
the sidewalls 430 abut against the plate 412 so that the plate 412 is spaced apart
from the ring 409. As a result, the ball valve 410 is lifted out of the ring 409 so
that the outlet 408 is no longer blocked, and the apertures 413 in the plate 412 are
no longer blocked by the surface of the ring 409. Accordingly, liquid flavourant 404
may flow out of the reservoir 402 via the apertures 413 and the outlet 408.
[0107] When the dispensing portion 406 is engaged with the engagement portion 428 of the
mouthpiece 426, the sidewalls 430 of the engagement portion 428 and the sidewall 424
of the outer housing 418 together define a receptacle (cavity) into which liquid flavourant
404 dispensed by the dispensing portion 406 is received. In particular, the sidewall
424 of the outer housing 418 may serve to prevent liquid flavourant 404 from escaping
via gaps 434a, 434b between the sidewalls 430 of the engagement portion. Thus, whilst
the dispensing portion 406 is engaged with the engagement portion 428, dispensed liquid
flavourant may be contained within the sidewalls 430. The receptacle defined by the
sidewalls 430 and sidewall 424 may have a predetermined volume, so that only a predetermined
volume of liquid flavourant 404 may be dispensed when the dispensing portion 406 is
engaged with the engagement portion 428.
[0108] After liquid flavourant 404 has been dispensed by the dispensing portion 406, the
dispensing portion 406 may be disengaged from the mouthpiece, as shown in Figure 4C
and indicated by arrow 442. In this configuration, the ball valve 410 once again returns
to the closed position due to the pressure exerted by the spring 416. A volume 438
of liquid flavourant 404 corresponding to the predetermined volume dispensed by the
dispensing portion 406 is left on the mouthpiece 426. As the sidewall 424 of the outer
housing 418 no longer blocks the gaps 434a, 434b between the sidewalls 430 of the
engagement portion 428, the volume 438 of liquid flavourant may spread over a surface
of the mouthpiece 426. For example, if the mouthpiece includes a textured outer surface,
the textured outer surface may serve to distribute the volume 438 of liquid flavourant
over an area of the mouthpiece 426.
[0109] Accordingly, the flavourant dispenser 400 may serve to dispense a predetermined volume
of liquid flavourant 404 onto the surface of the mouthpiece 426 in a controlled manner.
Specificity between the dispensing portion 406 and the engagement portion 428 of the
mouthpiece 426 may ensure that the flavourant dispenser 400 is only used to dispense
liquid flavourant onto the mouthpiece 426. This may prevent accidental dispensing
of liquid flavourant, or dispensing of liquid flavourant on devices which are not
intended for use with the flavourant dispenser 400.
[0110] In some embodiments, the mouthpiece 426 and flavourant dispenser 400 may be provided
as a kit.
[0111] The features disclosed in the foregoing description, or in the following claims,
or in the accompanying drawings, expressed in their specific forms or in terms of
a means for performing the disclosed function, or a method or process for obtaining
the disclosed results, as appropriate, may, separately, or in any combination of such
features, be utilised for realising the invention in diverse forms thereof.
[0112] While the invention has been described in conjunction with the exemplary embodiments
described above, many equivalent modifications and variations will be apparent to
those skilled in the art when given this disclosure. Accordingly, the exemplary embodiments
of the invention set forth above are considered to be illustrative and not limiting.
Various changes to the described embodiments may be made without departing from the
spirit and scope of the invention.
[0113] For the avoidance of any doubt, any theoretical explanations provided herein are
provided for the purposes of improving the understanding of a reader. The inventors
do not wish to be bound by any of these theoretical explanations.
[0114] Any section headings used herein are for organizational purposes only and are not
to be construed as limiting the subject matter described.
[0115] Throughout this specification, including the claims which follow, unless the context
requires otherwise, the words "have", "comprise", and "include", and variations such
as "having", "comprises", "comprising", and "including" will be understood to imply
the inclusion of a stated integer or step or group of integers or steps but not the
exclusion of any other integer or step or group of integers or steps.
[0116] It must be noted that, as used in the specification and the appended claims, the
singular forms "a," "an," and "the" include plural referents unless the context clearly
dictates otherwise. Ranges may be expressed herein as from "about" one particular
value, and/or to "about" another particular value. When such a range is expressed,
another embodiment includes from the one particular value and/or to the other particular
value. Similarly, when values are expressed as approximations, by the use of the antecedent
"about," it will be understood that the particular value forms another embodiment.
The term "about" in relation to a numerical value is optional and means, for example,
+/- 10%.
[0117] The words "preferred" and "preferably" are used herein refer to embodiments of the
invention that may provide certain benefits under some circumstances. It is to be
appreciated, however, that other embodiments may also be preferred under the same
or different circumstances. The recitation of one or more preferred embodiments therefore
does not mean or imply that other embodiments are not useful, and is not intended
to exclude other embodiments from the scope of the disclosure, or from the scope of
the claims.