The present disclosure relates to a cartridge for aerosol delivery devices such as smoking articles, and more particularly to a cartridge for smoking articles including an atomizer received through a reservoir substrate. The atomizer may be configured to heat an aerosol precursor, which may be made or derived from tobacco or otherwise incorporate tobacco, to form an inhalable substance for human consumption.
Many smoking devices have been proposed through the years as improvements upon, or alternatives to, smoking products that require combusting tobacco for use. Many of those devices purportedly have been designed to provide the sensations associated with cigarette, cigar, or pipe smoking, but without delivering considerable quantities of incomplete combustion and pyrolysis products that result from the burning of tobacco. To this end, there have been proposed numerous smoking products, flavor generators, and medicinal inhalers that utilize electrical energy to vaporize or heat a volatile material, or attempt to provide the sensations of cigarette, cigar, or pipe smoking without burning tobacco to a significant degree. See, for example, the various alternative smoking articles, aerosol delivery devices and heat generating sources set forth in the background art described in U.S. Pat. No. 7,726,320 to Robinson et al., U.S. patent application Ser. No. 13/432,406, filed Mar. 28, 2012, U.S. patent application Ser. No. 13/536,438, filed Jun. 28, 2012, U.S. patent application Ser. No. 13/602,871, filed Sep. 4, 2012, and U.S. patent application Ser. No. 13/647,000, filed Oct. 8, 2012, which are incorporated herein by reference.
Certain tobacco products that have employed electrical energy to produce heat for smoke or aerosol formation, and in particular, certain products that have been referred to as electronic cigarette products, have been commercially available throughout the world. Representative products that resemble many of the attributes of traditional types of cigarettes, cigars or pipes have been marketed as ACCORD® by Philip Morris Incorporated; ALPHA™, JOYE 510™ and M4™ by InnoVapor LLC; CIRRUS™ and FLING™ by White Cloud Cigarettes; COHITA™, COLIBRI™, ELITE CLASSIC™, MAGNUM™, PHANTOM™ and SENSE™ by Epuffer® International Inc.; DUOPRO™, STORM™ and VAPORKING® by Electronic Cigarettes, Inc.; EGAR™ by Egar Australia; eGo-C™ and eGo-T™ by Joyetech; ELUSION™ by Elusion UK Ltd; EONSMOKE® by Eonsmoke LLC; GREEN SMOKE® by Green Smoke Inc. USA; GREENARETTE™ by Greenarette LLC; HALLIGAN™, HENDU™, JET™, MAXXQ™ PINK™ and PITBULL™ by Smoke Stik®; HEATBAR™ by Philip Morris International, Inc.; HYDRO IMPERIAL™ and LXE™ from Crown7; LOGIC™ and THE CUBAN™ by LOGIC Technology; LUCI® by Luciano Smokes Inc.; METRO® by Nicotek, LLC; NJOY® and ONEJOY™ by Sottera, Ing; NO. 7™ by SS Choice LLC; PREMIUM ELECTRONIC CIGARETTE™ by PremiumEstore LLC; RAPP E-MYSTICK™ by Ruyan America, Inc.; RED DRAGON™ by Red Dragon Products, LLC; RUYAN® by Ruyan Group (Holdings) Ltd.; SMART SMOKER® by The Smart Smoking Electronic Cigarette Company Ltd.; SMOKE ASSIST® by Coastline Products LLC; SMOKING EVERYWHERE® by Smoking Everywhere, Inc.; V2CIGS™ by VMR Products LLC; VAPOR NINE™ by VaporNine LLC; VAPOR4LIFE® by Vapor 4 Life, Inc.; VEPPO™ by E-CigaretteDirect, LLC and VUSE® by R. J. Reynolds Vapor Company. Yet other electrically powered aerosol delivery devices, and in particular those devices that have been characterized as so-called electronic cigarettes, have been marketed under the tradenames BLU™; COOLER VISIONS™; DIRECT E-CIG™; DRAGONFLY™; EMIST™; EVERSMOKE™; GAMUCCI®; HYBRID FLAME™; KNIGHT STICKS™; ROYAL BLUES™; SMOKETIP® and SOUTH BEACH SMOKE™.
It would be desirable to provide a smoking article that employs heat produced by electrical energy to provide the sensations of cigarette, cigar, or pipe smoking, that does so without combusting tobacco to any significant degree, that does so without the need of a combustion heat source, and that does so without necessarily delivering considerable quantities of incomplete combustion and pyrolysis products. Thus, advances with respect to manufacturing electronic smoking articles would be desirable.
The present disclosure relates to aerosol delivery devices configured to produce aerosol. In one aspect a cartridge for an aerosol delivery device such as a smoking article is provided. The cartridge may include a base defining a connector end configured to engage a control body. The cartridge may additionally include a reservoir substrate configured to hold an aerosol precursor composition. The reservoir substrate may define a cavity extending therethrough from a first reservoir end to a second reservoir end, wherein the first reservoir end is positioned proximate the base. Further, the cartridge may include an atomizer. The atomizer may include a liquid transport element extending between a first liquid transport element end and a second liquid transport element end and a heating element extending at least partially about the liquid transport element at a position between the first liquid transport element end and the second liquid transport element end. The atomizer may extend through the cavity of the reservoir substrate such that the heating element is positioned proximate the second reservoir end and the first liquid transport element end and the second liquid transport element end are positioned proximate the first reservoir end.
In some embodiments the atomizer may further include two heater terminals connected to the base and the heating element. The reservoir substrate may define a plurality of grooves at the cavity extending between the first reservoir end and the second reservoir end and configured to receive the liquid transport element. The cartridge may further comprise a retainer clip surrounding the atomizer and configured to retain the liquid transport element in contact with the heater terminals. The heater terminals may extend through the reservoir substrate.
In some embodiments the cartridge may further comprise an electronic control component and a control component terminal coupled thereto. The electronic control component may be received in the cavity of the reservoir substrate and the control component terminal may be connected to the base. The control component terminal and the heater terminals may extend to a plurality of different depths within the base. The heating element may include a wire defining a plurality of coils wound about the liquid transport element and extending between a first wire end and a second wire end.
In some embodiments the atomizer may additionally include two connector rings surrounding the heating element at the first wire end and the second wire end. The heater terminals may engage the connector rings. The heater terminals may directly contact the wire proximate the first wire end and the second wire end. A spacing of the coils of the wire may be less proximate the first wire end and the second wire end. In some embodiments the cartridge may further include a mouthpiece and an external shell.
In an additional aspect, a method for assembling a cartridge for an aerosol delivery device such as a smoking article is provided. The method may include providing a base defining a connector end configured to engage a control body, an atomizer, and a reservoir substrate configured to hold an aerosol precursor composition and defining a cavity extending therethrough from a first reservoir end to a second reservoir end, connecting the atomizer to the base, and inserting the atomizer through the cavity through the reservoir substrate.
In some embodiments the method may further include assembling the atomizer. Assembling the atomizer may include providing two heater terminals, a liquid transport element extending between a first liquid transport element end and a second liquid transport element end, and a heating element. Assembling the atomizer may further include wrapping the heating element at least partially about the liquid transport element and connecting the heating element to the heater terminals such that the heating element extends therebetween and a first distal arm of the liquid transport element and a second distal arm of the liquid transport element extend along the heater terminals.
In some embodiments connecting the atomizer to the base may include connecting the heater terminals to the base. Inserting the atomizer through the cavity may include positioning the atomizer such that the heating element is proximate the second reservoir end, the first distal arm and the second distal arm of the liquid transport element and the heater terminals are at least partially received in the cavity, the first liquid transport element end and the second liquid transport element end are proximate the first reservoir end, and the first reservoir end of the reservoir substrate is proximate the base. Inserting the atomizer through the cavity may further include inserting the first distal arm and the second distal arm of the liquid transport element in a plurality of grooves extending between the first reservoir end and the second reservoir end of the reservoir substrate at the cavity.
In some embodiments the method may additionally include inserting the atomizer through a retainer clip configured to retain the liquid transport element in contact with the heater terminals. Further, the method may include providing an electronic control component and a control component terminal, connecting the control component terminal to the base, coupling the electronic control component to the control component terminal, and inserting the electronic control component into the cavity of the reservoir substrate. Connecting the control component terminal to the base and connecting the heater terminals to the base may include inserting the control component terminal and the heater terminals to a plurality of different heights within the base. Connecting the control component terminal to the base and coupling the electronic control component to the control component terminal may be conducted before connecting the heater terminals to the base.
In some embodiments wrapping the heating element at least partially about the liquid transport element may including winding a wire about the liquid transport element to define a plurality of coils wound about the liquid transport element extending between a first wire end and a second wire end. The method may further include coupling two connector rings to the heating element at the first wire end and the second wire end, wherein connecting the heating element to the heater terminals includes connecting the heater terminals to the connector rings. In another embodiment, connecting the heating element to the heater terminals may include connecting the heating element to the heater terminals directly. Winding the wire about the liquid transport element to define the coils may include winding the wire such that a spacing of the coils of the wire is less proximate the first wire end and the second wire end. The method may additionally include providing an external shell and a mouthpiece and coupling the external shell to the base and coupling the mouthpiece to the external shell.
Having thus described the disclosure in the foregoing general terms, reference will now be made to the accompanying drawings, which are not necessarily drawn to scale, and wherein:
The present disclosure will now be described more fully hereinafter with reference to exemplary embodiments thereof. These exemplary embodiments are described so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art. Indeed, the disclosure may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will satisfy applicable legal requirements. As used in the specification, and in the appended claims, the singular forms “a”, “an”, “the”, include plural referents unless the context clearly dictates otherwise.
The present disclosure provides descriptions of aerosol delivery devices that use electrical energy to heat a material (preferably without combusting the material to any significant degree) to form an inhalable substance; such articles most preferably being sufficiently compact to be considered “hand-held” devices. In certain highly preferred embodiments, the aerosol delivery devices can be characterized as smoking articles. As used herein, the term “smoking article” is intended to mean an article or device that provides some or all of the sensations (e.g., inhalation and exhalation rituals, types of tastes or flavors, organoleptic effects, physical feel, use rituals, visual cues such as those provided by visible aerosol, and the like) of smoking a cigarette, cigar, or pipe, without any substantial degree of combustion of any component of that article or device. As used herein, the term “smoking article” does not necessarily mean that, in operation, the article or device produces smoke in the sense of the aerosol resulting from by-products of combustion or pyrolysis of tobacco, but rather, that the article or device yields vapors (including vapors within aerosols that can be considered to be visible aerosols that might be considered to be described as smoke-like) resulting from volatilization or vaporization of certain components of the article or device. In highly preferred embodiments, articles or devices characterized as smoking articles incorporate tobacco and/or components derived from tobacco.
Articles or devices of the present disclosure also can be characterized as being vapor-producing articles, aerosol delivery articles or medicament delivery articles. Thus, such articles or devices can be adapted so as to provide one or more substances (e.g., flavors and/or pharmaceutical active ingredients) in an inhalable form or state. For example, inhalable substances can be substantially in the form of a vapor (i.e., a substance that is in the gas phase at a temperature lower than its critical point). Alternatively, inhalable substances can be in the form of an aerosol (i.e., a suspension of fine solid particles or liquid droplets in a gas). For purposes of simplicity, the term “aerosol” as used herein is meant to include vapors, gases and aerosols of a form or type suitable for human inhalation, whether or not visible, and whether or not of a form that might be considered to be smoke-like.
In use, smoking articles of the present disclosure may be subjected to many of the physical actions employed by an individual in using a traditional type of smoking article (e.g., a cigarette, cigar or pipe that is employed by lighting and inhaling tobacco). For example, the user of a smoking article of the present disclosure can hold that article much like a traditional type of smoking article, draw on one end of that article for inhalation of aerosol produced by that article, take puffs at selected intervals of time, etc.
Smoking articles of the present disclosure generally include a number of components provided within an outer shell or body. The overall design of the outer shell or body can vary, and the format or configuration of the outer body that can define the overall size and shape of the smoking article can vary. Typically, an elongated body resembling the shape of a cigarette or cigar can be a formed from a single, unitary shell; or the elongated body can be formed of two or more separable pieces. For example, a smoking article can comprise an elongated shell or body that can be substantially tubular in shape and, as such, resemble the shape of a conventional cigarette or cigar. In one embodiment, all of the components of the smoking article are contained within one outer body or shell. Alternatively, a smoking article can comprise two or more shells that are joined and are separable. For example, a smoking article can possess at one end a control body comprising a shell containing one or more reusable components (e.g., a rechargeable battery and various electronics for controlling the operation of that article), and at the other end and removably attached thereto a shell containing a disposable portion (e.g., a disposable flavor-containing cartridge). More specific formats, configurations and arrangements of components within the single shell type of unit or within a multi-piece separable shell type of unit will be evident in light of the further disclosure provided herein. Additionally, various smoking article designs and component arrangements can be appreciated upon consideration of the commercially available electronic smoking articles, such as those representative products listed in the background art section of the present disclosure.
Smoking articles of the present disclosure most preferably comprise some combination of a power source (i.e., an electrical power source), at least one control component (e.g., means for actuating, controlling, regulating and ceasing power for heat generation, such as by controlling electrical current flow the power source to other components of the article), a heater or heat generation component (e.g., an electrical resistance heating element or component commonly referred to as an “atomizer”), and an aerosol precursor composition (e.g., commonly a liquid capable of yielding an aerosol upon application of sufficient heat, such as ingredients commonly referred to as “smoke juice,” “e-liquid” and “e juice”), and a mouthend region or tip for allowing draw upon the smoking article for aerosol inhalation (e.g., a defined air flow path through the article such that aerosol generated can be withdrawn therefrom upon draw). Exemplary formulations for aerosol precursor materials that may be used according to the present disclosure are described in U.S. Pat. Pub. No. 2013/0008457 to Zheng et al., the disclosure of which is incorporated herein by reference in its entirety.
Alignment of the components within the article can vary. In specific embodiments, the aerosol precursor composition can be located near an end of the article (e.g., within a cartridge, which in certain circumstances can be replaceable and disposable), which may be is proximal to the mouth of a user so as to maximize aerosol delivery to the user. Other configurations, however, are not excluded. Generally, the heating element can be positioned sufficiently near the aerosol precursor composition so that heat from the heating element can volatilize the aerosol precursor (as well as one or more flavorants, medicaments, or the like that may likewise be provided for delivery to a user) and form an aerosol for delivery to the user. When the heating element heats the aerosol precursor composition, an aerosol is formed, released, or generated in a physical form suitable for inhalation by a consumer. It should be noted that the foregoing terms are meant to be interchangeable such that reference to release, releasing, releases, or released includes form or generate, forming or generating, forms or generates, and formed or generated. Specifically, an inhalable substance is released in the form of a vapor or aerosol or mixture thereof. Additionally, the selection of various smoking article components can be appreciated upon consideration of the commercially available electronic smoking articles, such as those representative products listed in the background art section of the present disclosure.
A smoking article incorporates a battery or other electrical power source to provide current flow sufficient to provide various functionalities to the article, such as resistive heating, powering of control systems, powering of indicators, and the like. The power source can take on various embodiments. Preferably, the power source is able to deliver sufficient power to rapidly heat the heating member to provide for aerosol formation and power the article through use for the desired duration of time. The power source preferably is sized to fit conveniently within the article so that the article can be easily handled; and additionally, a preferred power source is of a sufficiently light weight to not detract from a desirable smoking experience.
One example embodiment of a smoking article 100 is provided in
In specific embodiments, one or both of the control body 102 and the cartridge 104 may be referred to as being disposable or as being reusable. For example, the control body may have a replaceable battery or may be rechargeable and thus may be combined with any type of recharging technology, including connection to a typical electrical outlet, connection to a car charger (i.e., cigarette lighter receptacle), and connection to a computer, such as through a USB cable.
In the exemplified embodiment, the control body 102 includes a control component 106, a flow sensor 108, and a battery 110, which can be variably aligned, and can include a plurality of indicators 112 at a distal end 114 of an external shell 116. The indicators 112 can be provided in varying numbers and can take on different shapes and can even be an opening in the body (such as for release of sound when such indicators are present).
An air intake 118 may be positioned in the external shell 116 of the control body 102. A receptacle 120 also is included at the proximal attachment end 122 of the control body 102 and extends into a control body projection 124 to allow for ease of electrical connection with an atomizer or a component thereof, such as a resistive heating element (described below) when the cartridge 104 is attached to the control body.
The cartridge 104 includes an external shell 126 with a mouth opening 128 at a mouthend 130 thereof to allow passage of air and entrained vapor (i.e., the components of the aerosol precursor composition in an inhalable form) from the cartridge to a consumer during draw on the smoking article 100. The smoking article 100 may be substantially rod-like or substantially tubular shaped or substantially cylindrically shaped in some embodiments.
The cartridge 104 further includes an atomizer 132 comprising a resistive heating element 134 comprising a wire coil in the illustrated embodiment and a liquid transport element 136 comprising a wick in the illustrated embodiment and configured to transport a liquid. Various embodiments of materials configured to produce heat when electrical current is applied therethrough may be employed to form the wire coil. Example materials from which the wire coil may be formed include Kanthal (FeCrAl), Nichrome, Molybdenum disilicide (MoSi2), molybdenum silicide (MoSi), Molybdenum disilicide doped with Aluminum (Mo(Si,Al)2), and ceramic (e.g., a positive temperature coefficient ceramic). Electrically conductive heater terminals 138 (e.g., positive and negative terminals) at the opposing ends of the heating element 134 are configured to direct current flow through the heating element and configured for attachment to the appropriate wiring or circuit (not illustrated) to form an electrical connection of the heating element with the battery 110 when the cartridge 104 is connected to the control body 102. Specifically, a plug 140 may be positioned at a distal attachment end 142 of the cartridge 104. When the cartridge 104 is connected to the control body 102, the plug 140 engages the receptacle 120 to form an electrical connection such that current controllably flows from the battery 110, through the receptacle and plug, and to the heating element 134. The external shell 126 of the cartridge 104 can continue across the distal attachment end 142 such that this end of the cartridge is substantially closed with the plug protruding therefrom.
A reservoir may utilize a liquid transport element to transport an aerosol precursor composition to an aerosolization zone. One such example is shown in
In use, when a user draws on the article 100, the heating element 134 is activated (e.g., such as via a puff sensor), and the components for the aerosol precursor composition are vaporized in the aerosolization zone 146. Drawing upon the mouthend 130 of the article 100 causes ambient air to enter the air intake 118 and pass through the central opening in the receptacle 120 and the central opening in the plug 140. In the cartridge 104, the drawn air passes through an air passage 148 in an air passage tube 150 and combines with the formed vapor in the aerosolization zone 146 to folio an aerosol. The aerosol is whisked away from the aerosolization zone 146, passes through an air passage 152 in an air passage tube 154, and out the mouth opening 128 in the mouthend 130 of the article 100.
It is understood that a smoking article that can be manufactured according to the present disclosure can encompass a variety of combinations of components useful in forming an electronic smoking article. Reference is made for example to the smoking articles disclosed in U.S. patent application Ser. No. 13/536,438, filed Jun. 28, 2012, U.S. patent application Ser. No. 13/432,406, filed Mar. 28, 2012, U.S. patent application Ser. No. 13/602,871, filed Sep. 4, 2012, the disclosures of which are incorporated herein by reference in their entirety. Further to the above, representative heating elements and materials for use therein are described in U.S. Pat. No. 5,060,671 to Counts et al.; U.S. Pat. No. 5,093,894 to Deevi et al.; U.S. Pat. No. 5,224,498 to Deevi et al.; U.S. Pat. No. 5,228,460 to Sprinkel Jr., et al.; U.S. Pat. No. 5,322,075 to Deevi et al.; U.S. Pat. No. 5,353,813 to Deevi et al.; U.S. Pat. No. 5,468,936 to Deevi et al.; U.S. Pat. No. 5,498,850 to Das; U.S. Pat. No. 5,659,656 to Das; U.S. Pat. No. 5,498,855 to Deevi et al.; U.S. Pat. No. 5,530,225 to Hajaligol; U.S. Pat. No. 5,665,262 to Hajaligol; U.S. Pat. No. 5,573,692 to Das et al.; and U.S. Pat. No. 5,591,368 to Fleischhauer et al., the disclosures of which are incorporated herein by reference in their entireties. Further, a single-use cartridge for use with an electronic smoking article is disclosed in U.S. patent application Ser. No. 13/603,612, filed Sep. 5, 2012, which is incorporated herein by reference in its entirety.
The various components of a smoking article according to the present disclosure can be chosen from components described in the art and commercially available. Examples of batteries that can be used according to the disclosure are described in U.S. Pat. App. Pub. No. 2010/0028766, the disclosure of which is incorporated herein by reference in its entirety.
An exemplary mechanism that can provide puff-actuation capability includes a Model 163PC01D36 silicon sensor, manufactured by the MicroSwitch division of Honeywell, Inc., Freeport, Ill. Further examples of demand-operated electrical switches that may be employed in a heating circuit according to the present disclosure are described in U.S. Pat. No. 4,735,217 to Gerth et al., which is incorporated herein by reference in its entirety. Further description of current regulating circuits and other control components, including microcontrollers that can be useful in the present smoking article, are provided in U.S. Pat. Nos. 4,922,901, 4,947,874, and 4,947,875, all to Brooks et al., U.S. Pat. No. 5,372,148 to McCafferty et al., U.S. Pat. No. 6,040,560 to Fleischhauer et al., and U.S. Pat. No. 7,040,314 to Nguyen et al., all of which are incorporated herein by reference in their entireties.
The aerosol precursor, which may also be referred to as an aerosol precursor composition or a vapor precursor composition, can comprise one or more different components. For example, the aerosol precursor can include a polyhydric alcohol (e.g., glycerin, propylene glycol, or a mixture thereof). Representative types of further aerosol precursor compositions are set forth in U.S. Pat. No. 4,793,365 to Sensabaugh, Jr. et al.; U.S. Pat. No. 5,101,839 to Jakob et al.; PCT WO 98/57556 to Biggs et al.; and Chemical and Biological Studies on New Cigarette Prototypes that Heat Instead of Burn Tobacco, R. J. Reynolds Tobacco Company Monograph (1988); the disclosures of which are incorporated herein by reference.
Still further components can be utilized in the smoking article of the present disclosure. For example, U.S. Pat. No. 5,261,424 to Sprinkel, Jr. discloses piezoelectric sensors that can be associated with the mouth-end of a device to detect user lip activity associated with taking a draw and then trigger heating; U.S. Pat. No. 5,372,148 to McCafferty et al. discloses a puff sensor for controlling energy flow into a heating load array in response to pressure drop through a mouthpiece; U.S. Pat. No. 5,967,148 to Harris et al. discloses receptacles in a smoking device that include an identifier that detects a non-uniformity in infrared transmissivity of an inserted component and a controller that executes a detection routine as the component is inserted into the receptacle; U.S. Pat. No. 6,040,560 to Fleischhauer et al. describes a defined executable power cycle with multiple differential phases; U.S. Pat. No. 5,934,289 to Watkins et al. discloses photonic-optronic components; U.S. Pat. No. 5,954,979 to Counts et al. discloses means for altering draw resistance through a smoking device; U.S. Pat. No. 6,803,545 to Blake et al. discloses specific battery configurations for use in smoking devices; U.S. Pat. No. 7,293,565 to Griffen et al. discloses various charging systems for use with smoking devices; U.S. Pat. App. Pub. No. 2009/0320863 by Fernando et al. discloses computer interfacing means for smoking devices to facilitate charging and allow computer control of the device; U.S. Pat. App. Pub. No. 2010/0163063 by Fernando et al. discloses identification systems for smoking devices; and WO 2010/003480 by Flick discloses a fluid flow sensing system indicative of a puff in an aerosol generating system; all of the foregoing disclosures being incorporated herein by reference in their entireties. Further examples of components related to electronic aerosol delivery articles and disclosing materials or components that may be used in the present article include U.S. Pat. No. 4,735,217 to Gerth et al.; U.S. Pat. No. 5,249,586 to Morgan et al.; U.S. Pat. No. 5,666,977 to Higgins et al.; U.S. Pat. No. 6,053,176 to Adams et al.; U.S. Pat. No. 6,164,287 to White; U.S. Pat. No. 6,196,218 to Voges; U.S. Pat. No. 6,810,883 to Felter et al.; U.S. Pat. No. 6,854,461 to Nichols; U.S. Pat. No. 7,832,410 to Hon; U.S. Pat. No. 7,513,253 to Kobayashi; U.S. Pat. No. 7,896,006 to Hamano; U.S. Pat. No. 6,772,756 to Shayan; U.S. Pat. No. 8,156,944 to Hon; U.S. Pat. App. Pub. Nos. 2006/0196518, 2009/0126745, and 2009/0188490 to Hon; U.S. Pat. App. Pub. No. 2009/0272379 to Thorens et al.; U.S. Pat. App. Pub. Nos. 2009/0260641 and 2009/0260642 to Monsees et al.; U.S. Pat. App. Pub. Nos. 2008/0149118 and 2010/0024834 to Oglesby et al.; U.S. Pat. App. Pub. No. 2010/0307518 to Wang; and WO 2010/091593 to Hon. A variety of the materials disclosed by the foregoing documents may be incorporated into the present devices in various embodiments, and all of the foregoing disclosures are incorporated herein by reference in their entireties.
As illustrated, the base 202 may define a receptacle 222 configured to receive the control component terminal 204 therein. In this regard, as illustrated in
As illustrated in
The liquid transport element 226 may comprise a wick in some embodiments, as described above.
The heating element 228 extends at least partially about the liquid transport element 226 at a position between the first liquid transport element end 232a and the second liquid transport element end 232b. In some embodiments, the heating element 228 may comprise a wire 234 defining a plurality of coils wound about the liquid transport element 226 and extending between a first wire end 236a and a second wire end 236b (collectively, “wire ends 236”), as illustrated in
The heater terminals 230 connect to the heating element 228. In one embodiment the heater terminals 230 directly contact the wire 234 proximate the first wire end 236a and the second wire end 236b. Direct contact, as used herein, refers to physical contact between the wire 234 and the heater terminals 230. However, direct contact, as used herein, also encompasses embodiments in which one or more welds 238a, 238b couple the wire 234 and the heater terminals 230 (see, e.g.,
As further illustrated in
The heater terminals 230 may define a plurality of walls 242. The walls 242 may include an inner wall 242a, and two side walls 242b, 242c. Accordingly, the distal arms 240 of the liquid transport element 226 may be surrounded on three sides by the walls 242 of the heater terminals 230. This configuration may assist in retaining the heater terminals 230 in contact with the distal arms 240 of the liquid transport element 226. Further, the heater terminals 230 may define a first tab 244a and a second tab 244b (collectively, “tabs 244”) to which the first wire end 236a and the second wire end 236b may be welded or otherwise connected. The heater terminals 230 may also include protrusions 246a, 246b configured to engage the base 202, for example via interference fit, such that the atomizer 208 is retained in engagement therewith. Ends 248a, 248b of the heater terminals 230 may be configured to engage a control body, so as to establish an electrical connection therewith.
As illustrated in
Further, the end 220 of the control component terminal 204 and the ends 248a, 248b of the heater terminals 230 may be exposed at the connector end 252 of the base 202. The end 220 of the control component terminal 204 and the ends 248a, 248b of the heater terminals 230 may be located at differing positions within the base 202 such that they make connections with components at different locations within the control body, and avoid unintended contact therebetween. In this regard, the end 220 of the control component terminal 204 and the ends 248a, 248b of the heater terminals 230 may be located at differing radial distances from the central opening 254. In the illustrated embodiment, the end 220 of the control component terminal 204 is located closest to the central opening 254, the first end 248a of the first heater terminal 230a is located farthest from the central opening, and the second end 248b of the second heater terminal 230b is located at a radial distance therebetween. Further, the end 220 of the control component terminal 204 and the ends 248a, 248b of the heater terminals 230 may extend to a plurality of different depths within the base 202. In the illustrated embodiment, the end 220 of the control component terminal 204 extends through the base 202 to a greatest depth, the first end 248a of the first heater terminal 230a extends through the base to the smallest depth, and the second end 248b of the second heater terminal 230b extends through the base to a depth therebetween.
The reservoir substrate 210 can comprise various different materials and can be formed in a variety of different manners. In one embodiment the reservoir substrate 210 can be formed from a plurality of combined layers that can be concentric or overlapping. For example, the reservoir substrate 210 can be a continuous sheet of a material that is rolled to form the hollow tubular configuration. In other embodiments, the reservoir substrate 210 can be substantially a unitary component. For example, the reservoir substrate 210 can be shaped or molded so as to be a singular preformed element in the form of a substantially hollow tube, which may be substantially continuous in composition across the length and thickness thereof.
The reservoir substrate 210 can be formed from a material that is rigid or semi-rigid in some embodiments, while retaining the ability to store a liquid product such as, for example, an aerosol precursor composition. In certain embodiments, the material of the reservoir substrate 210 can be absorbent, adsorbent, or otherwise porous so as to provide the ability to retain the aerosol precursor composition. As such, the aerosol precursor composition can be characterized as being coated on, adsorbed by, or absorbed in the material of the reservoir substrate 210. The reservoir substrate 210 can be positioned within the cartridge 200 such that the reservoir substrate is in contact with the liquid transport element 226. More particularly, the reservoir substrate 210 can be manufactured from any material suitable for retaining the aerosol precursor composition (e.g., through absorption, adsorption, or the like) and allowing wicking away of the precursor composition for transport to the heating element 228.
The material of the reservoir substrate 210 may be suitable for forming and maintaining an appropriate shape. The material of the reservoir substrate 210 can be heat resistant so as to retain its structural integrity and avoid degradation at least at a temperature proximal to the heating temperature provided by the heating element 228. However, the reservoir substrate 210 need not be heat resistant to the full temperature produced by the heating element 228 due to the reservoir substrate being out of contact therewith. The size and strength of the reservoir substrate 210 may vary according to the features and requirements of the cartridge 200. In particular embodiments, the reservoir substrate 210 can be manufactured from a material suitable for a high-speed, automated manufacturing process. Such processes may reduce manufacturing costs compared to traditional woven or non-woven fiber mats. According to one embodiment, the reservoir can be manufactured from a cellulose acetate tow which can be processed to form a hollow acetate tube.
In certain embodiments, the reservoir substrate 210 can be provided in a form such that at least part of the cavity 256 is shaped and dimensioned to accommodate one or more other components of the cartridge 200. In some embodiments, the term “shaped and dimensioned” can indicate that a wall of the reservoir substrate 210 at the cavity 256 includes one or more indentations or protrusions that cause the interior of the reservoir substrate to have a shape that is other than substantially smooth and continuous. In other embodiments, the hollow nature of the reservoir substrate 210 can be sufficient to allow for accommodation of further components of the cartridge 200 without the need for formation of cavities or protrusions. Thus, the cartridge 200 can be particularly beneficial in that the reservoir substrate 210 can be pre-formed and can have a hollow interior defining the cavity 256 with a wall that is shaped and dimensioned to accommodate a further component of the cartridge in a mating arrangement. This particularly can facilitate ease of assembly of the cartridge 200 and can maximize the volume of the reservoir substrate 200 while also providing sufficient space for aerosol formation.
In the illustrated embodiment, the cavity 256 extending through the reservoir substrate 210 is shaped and dimensioned to accommodate at least a portion of the atomizer 208.
Specifically, the reservoir substrate 210 includes two diametrically opposed grooves 260a, 260b (collectively, “grooves 260”) at the cavity 256. As illustrated, the grooves 260 may extend substantially the entire length of the reservoir substrate 210 from the first end 258a to the second end 258b thereof. In light of the reservoir substrate 210 defining the cavity 256 therethrough, the atomizer 208 can be easily positioned interior to the reservoir substrate during assembly of the smoking article. Likewise, since the cavity 256 is shaped and dimensioned to mate with the atomizer 208, the combination can be easily assembled, and the atomizer can snugly mate with the reservoir substrate 210 while simultaneously placing the liquid transport element 226 in fluid connection with the reservoir substrate.
In this regard, the grooves 260 may be configured to receive the liquid transport element 226 at least partially therein. More particularly, the distal arms 240 of the liquid transport element 226 may be received in the grooves 260. Thus, the liquid transport element 226 may extend substantially entirely through the reservoir substrate 210 such that the liquid transport element ends 232 are positioned proximate the first reservoir end 258a. Further, the heater terminals 230 may extend through the cavity 256 through the reservoir substrate 210. In some embodiments the heater terminals 230 may be partially or fully received in the grooves 260. Additionally, the electronic control component 206 may be at least partially received in the cavity 256 through the reservoir substrate 210.
By adapting the cavity 256 of the reservoir substrate 210 to accommodate the atomizer 208, and/or various other components of the cartridge 200, available open space in the cartridge can be fully maximized by extending the reservoir substrate into the previously open spaces. As a result, the overall size and capacity of the reservoir substrate 210 can be increased in comparison to traditional woven or non-woven fiber mats that are typically utilized in electronic smoking articles. The increased capacity allows the reservoir substrate 210 to hold an increased amount of the aerosol precursor composition which may, in turn, result in longer use and enjoyment of the cartridge 200 by the end user.
As illustrated in
The aerosol precursor composition may comprise a variety of components including, by way of example, glycerin, nicotine, tobacco, tobacco extract, and/or flavorants. Various components that may be included in the aerosol precursor composition are described in U.S. Pat. No. 7,726,320 to Robinson et al., which is incorporated herein by reference. In some embodiments the aerosol precursor composition may additionally include an effervescent material. The effervescence material may be configured to effervesce under certain circumstances such as when combined with another material.
However, in another embodiment the effervescent material may be configured to effervesce (or otherwise produce bubbles) when exposed to heat. In this regard, the effervescent material may be configured to effervesce at a temperature at, or preferably below, a vaporization temperature of the aerosol precursor composition. By effervescing at, or preferably below, a temperature at which the aerosol precursor vaporizes, the air bubbles formed thereby may force the other components of the aerosol precursor composition to the surface of the liquid transport element 226. Accordingly, when current is applied through the heating element 228, the aerosol precursor component may be forced to the exterior of the liquid transport element 226, and then the aerosol precursor component may be vaporized more readily due to more immediate and direct contact with the heat produced by the heating element. Thus, the amount of electric power required to vaporize the aerosol precursor component may be reduced by employing an effervescent material as described above. Embodiments of effervescent materials are described, by way of example, in U.S. Pat. App. Pub. No. 2012/0055494 to Hunt et al., which is incorporated herein by reference. Further, the use of effervescent materials is described, for example, in U.S. Pat. No. 4,639,368 to Niazi et al.; U.S. Pat. No. 5,178,878 to Wehling et al.; U.S. Pat. No. 5,223,264 to Wehling et al.; U.S. Pat. No. 6,974,590 to Pather et al.; and U.S. Pat. No. 7,381,667 to Bergquist et al., as well as US Pat. Pub. Nos. 2006/0191548 to Strickland et al.; 2009/0025741 to Crawford et al; 2010/0018539 to Brinkley et al.; and 2010/0170522 to Sun et al.; and PCT WO 97/06786 to Johnson et al., all of which are incorporated by reference herein.
The reservoir substrate 210 includes an exterior surface 262 that can be substantially shaped and adapted to conform to an interior surface 264 of the external shell 212. In this regard, the external shell 212 may define a tubular shape with a cavity 266 therethrough sized to receive the reservoir substrate 210. For example, an inner radius of the external shell 212 may substantially correspond to, or may be slightly larger than, an outer radius of the reservoir substrate 210. Accordingly, the external shell 212 may be received over the reservoir substrate 210 and coupled to the base 202, as illustrated in
As illustrated in
The receptacle 300 may further comprise a plurality of electrical contacts 308a-c respectively configured to contact the end 220 of the control component terminal 204 and the ends 248a, 248b of the heater terminals 230. The electrical contacts 308a may be positioned at differing radial distances from a central opening 310 through the receptacle 300 and positioned at differing depths within the receptacle 300. The depth and radius of each of the electrical contacts 308a-c is configured such that the end 220 of the control component terminal 204 and the ends 248a, 248b of the heater terminals 230 respectively come into contact therewith when the base 202 and the receptacle 300 are joined together to establish an electrical connection therebetween. More particularly, in the illustrated embodiment, a first electrical contact 308a defines the smallest diameter, a third electrical contact 308c defines the greatest diameter, and a second electrical contact 308b defines a diameter therebetween. Further, the electrical contacts 308a-c are located at differing depths within the receptacle 300 relative to a connector end thereof. In the illustrated embodiment, the first electrical contact 308a is located at a greatest depth, the third electrical contract 308c is located at the smallest depth, and the second electrical contact 308b is located at a depth therebetween. Accordingly, the first electrical contact 308a may be configured to contact the end 220 of the control component terminal 204, the second electrical contact 308b may be configured to contact the second end 248b of the second heater terminal 230b, and the first end 248a of the first heater terminal 230a may be configured to contact the third electrical contact 308c.
In the illustrated embodiment the electrical contacts 308a-c comprise circular metal bands of varying radii positioned at differing depths within the receptacle 300 as described above. In one embodiment the bands may comprise continuous round rings. In another embodiment, the bands may comprise a sheet of metal material that is wound into the circular configuration and defines a joint where the ends thereof meet. In some embodiments the joint between the ends of each band of metal material may be configured at opposing non-perpendicular angles relative to a longitudinal length of the metal material defining the bands. Thereby, the ends of the band may meet at a joint that does not extend parallel to a central axis extending through the receptacle 300. This configuration may be preferable in that it avoids creating a joint extending parallel to the central axis through the receptacle, which could form a poor connection with an end of one of the heater terminals or the control component terminal when in contact therewith. Each of the bands defines a major contact surface facing radially inwardly toward the central axis of the receptacle 300. The bands defining the electrical contacts 308a-c are separated from one another by stepped surfaces of the body of the receptacle, which may be oriented perpendicularly to the radially facing major surfaces of the electrical contacts.
When the electrical contacts 308a-c comprise circular bands and the end 220 of the control component terminal 204 and the ends 248a, 248b of the heater terminals 230 extend to corresponding depths and radii within the base 202, electrical connections between the base and the receptacle 300 may be established regardless of the rotational orientation of the base with respect to the receptacle. Accordingly, connection between the base 202 of the cartridge 200 and the receptacle 300 of the control body may be facilitated. The electrical contacts 308a-c may be respectively coupled to a plurality of control body terminals 312a-c that connect to a plurality of components within the control body such as a battery and a controller therefor.
Further, when the base 202 of the cartridge 200 and the receptacle 300 of the control body are coupled together, a fluid connection may also be established. In this regard, the receptacle 300 may define a fluid pathway configured to receive air from an ambient environment and direct the air to the cartridge 200 when a user draws thereon. More particularly, in one embodiment the receptacle 300 may define a rim 314 with a radially extending notch 316 defined therein. Further a longitudinally extending recessed slot 318 may extend from the notch 316 to an opening 320. The opening 320 may define a cutout or a hole through a portion of the receptacle in some embodiments. Thus, when the receptacle 300 is engaged with the end of an external shell or body of a corresponding control body, the fluid pathway through the notch 316, the slot 318, and the opening 320 may remain open. Air drawn through this path may then be directed through the central opening 310 of the receptacle 300 and the central opening 254 of the base 202 when the receptacle and the base are connected to one another. Accordingly, air may be directed from the control body through the cartridge 200 in the manner described above when a user draws on the mouthpiece 214 of the cartridge.
Accordingly, the above-described cartridge 200 may provide benefits in terms of ease of assembly and ease of attachment to the receptacle 300 of a control body. In particular, with respect to the cartridge 200, assembly thereof may be simplified in that the components thereof may be axially assembled. More specifically, the components of the cartridge 200 may be assembled in the order illustrated in
An alternate embodiment of a cartridge 400 for a smoking article is illustrated in
In this regard, the cartridge 400 may comprise a base 402, a control component terminal 404, an electronic control component 406, an atomizer 408, a reservoir substrate 410, an external shell 412, and a mouthpiece 414. The cartridge 400 may be configured to couple to a control body to form a smoking article. Accordingly, the cartridge 400 may include embodiments of each of the components described above with respect to the embodiment of the cartridge 200 illustrates in
However, as illustrated in
The atomizer 408 may also differ in one or more aspects. In this regard, as illustrated in
In one embodiment, as illustrated in
As illustrated in
Another difference between the cartridge 200 illustrated in
As illustrated in
As illustrated in
The flow tube 484 may further comprise a cutout 488 configured to receive the top of an electronic control component 406′ therein. Optional differences with respect to the electronic control component 406′ and the previously described embodiments of electronic control components are described below. By receiving the top of the electronic control component 406′ in the cutout 488, the flow tube 484 may be at least partially coupled thereto. In this regard, during assembly of the cartridge, in one embodiment the flow tube 484 may be attached to the electronic control component 406′ via reception of the top of the electronic control component in the cutout 488 prior to coupling the atomizer 408 to the base. However, in another embodiment the flow tube 484 may be coupled to the atomizer 408 via reception of the terminals 430 in the grooves 486 such that the cutout 488 engages the electronic control component 406′ at the same time that the atomizer is coupled to the base 402.
The flow tube 484 may be configured to direct a flow of air received from a central opening 454 (see,
In the illustrated embodiment, the flow tube 484 defines a truncated side 492a (see, e.g.,
In contrast, the truncated side 492a of the flow tube 484 may be provided in order to complete the substantially round outer perimeter of the flow tube such that it may be retained in place in the reservoir substrate 410 and provide material through which the through hole 490 is defined. The flow tube 484 may be truncated on this side 492a in order to allow for space for components extending from the electronic control component 406′. However, depending on the particular size and shape of the electronic control component, the tubular reservoir substrate may be elongated on both sides such that the flow tube substantially surrounds the electronic control component and flow channels are defined on both sides thereof.
Regardless of the particular flow patterns around the electronic control component 406′, the through hole 490 may receive all of the flow of air directed through the central opening 454 in the base 402. Accordingly, the size of the through hole 490 may be selected to define a desired velocity of air directed to the heating element 428. Accordingly, a desired amount of aerosol may be delivered to the air as it passes the heating element 428. For example, the through hole 490 may taper from a relatively larger diameter to a relatively smaller diameter proximate the heating element 428. However, in other embodiments the through hole 490 may define a substantially constant diameter.
A first heater terminal 530a and a second heater terminal 530b (collectively, “heater terminals 530”) may engage the connector rings 584. Accordingly, an electrical connection may be established therebetween. More particularly, as illustrated in
Note that the above-described atomizers and variations thereof may be employed in a variety of embodiments of cartridges for aerosol delivery devices. In this regard,
As illustrated, the cartridge 800 may comprise a base shipping plug 802, a base 804, a control component terminal 806, an electronic control component 808, a flow tube 810, an atomizer 812, a reservoir substrate 814, an external shell 816, a label 818, a mouthpiece 820, and a mouthpiece shipping plug 822 according to an example embodiment of the present disclosure. Many of these components are substantially similar to the components of the cartridges described above. Accordingly, only differences with respect to the previously-described embodiments of cartridges will be described below.
In this regard, in one embodiment the electronic control component 808 may comprise a single-piece printed circuit board assembly. The electronic control component 808 may include a ceramic substrate, which may comprise about 96% alumina ceramic in one embodiment. This material is inorganic, non-reactive, non-degrading, and non-porous. Use of such a ceramic material may be preferable in that it may define a robust, dimensionally-stable part without requiring a separate supporting structure. Further, such a ceramic material may allow for adhesion of a coating thereto. For example, a component side of the electronic control component 808 may comprise a chloro-substituted poly (para-xylylene) commercially available as Parylene C from Specialty Coating Systems, Inc., or any other coating or other sealant/barrier coating configured to protect components of the circuit board from liquid and moisture. The sealant/barrier coating may also provide the electronic control component 808 with a decreased coefficient of friction, which may facilitate an axial assembly process of the cartridge 800.
Further, the mouthpiece shipping plug 822 is configured to engage openings in the mouthpiece 820 prior to use of the cartridge 800 in order to prevent entry of contaminants through the openings in the mouthpiece. Similarly, the base shipping plug 802 is configured to couple to an inner periphery of the base 804 to protect the base from damage or contamination during transport and storage. Further, the label 818 may serve as an exterior member providing the cartridge 800 with identifying information.
The reservoir substrate 814 may define a cavity 852 extending therethrough from a first reservoir end 854a to a second reservoir end 854b (collectively, “reservoir ends 854”), wherein the first reservoir end is positioned proximate the base 804. In this regard, the reservoir substrate 814 may define a hollow tubular configuration. The reservoir substrate 814 can comprise one or more of various materials and can be ruined in a variety of different manners. In one embodiment the reservoir substrate 814 can be formed from a plurality of combined layers that can be concentric or overlapping. For example, the reservoir substrate 814 can be a continuous sheet of a material that is rolled such that the ends thereof meet along a joint 856 to form the hollow tubular configuration, or multiple layers of the material may be wrapped thereabout. Thus, the reservoir substrate 814 may conform to the shape of the components received in the cavity 852 such as the atomizer 812.
As illustrated in
The cartridge 800 may additionally include the flow tube 810, which may be substantially similar to the above-described flow tube 484. Thus, as illustrated in
The flow tube 810 may be configured to direct a flow of air received from the base 804 to the heating element 840 of the atomizer 812. More particularly, as illustrated in
In some embodiments the flow tube 810 may comprise a ceramic material. For example, the flow tube 810 may comprise 96.5% aluminum tri oxide in one embodiment. This material may provide heat resistance which may be desirable due to proximity to the heating element 840. However, the flow tube 810 may be formed from various other materials in other embodiments.
The reservoir substrate 814 includes an exterior surface 862 that can be substantially shaped and adapted to conform to an interior surface of the external shell 816 (see,
A method for assembling a cartridge for a smoking article is also provided. As illustrated in
In some embodiments the method may further comprise assembling the atomizer at operation 906. Assembling the atomizer at operation 906 may comprise providing a plurality of heater terminals, a liquid transport element extending between a first liquid transport element end and a second liquid transport element end, and a heating element. Further, assembling the atomizer at operation 906 may include wrapping the heating element at least partially about the liquid transport element and connecting the heating element to the heater terminals such that the heating element extends therebetween and a first distal arm of the liquid transport element and a second distal arm of the liquid transport element extend along the heater terminals. In some embodiments wrapping the heating element at least partially about the liquid transport element may comprise winding a wire about the liquid transport element to define a plurality of coils wound about the liquid transport element extending between a first wire end and a second wire end. Further, winding the wire about the liquid transport element to define the coils may comprise winding the wire such that a spacing of the coils of the wire is less proximate the first wire end and the second wire end.
In some embodiments assembling the atomizer at operation 906 may comprise coupling a plurality of connector rings to the heating element at the first wire end and the second wire end, wherein connecting the heating element to the heater terminals comprises connecting the heater terminals to the connector rings. In some embodiments connecting the heating element to the heater terminals may comprise connecting the heating element to the heater terminals directly. Further, connecting the atomizer to the base at operation 902 may comprise connecting the heater terminals to the base. Additionally, inserting the atomizer through the cavity at operation 904 may comprise positioning the atomizer such that the heating element is proximate the second reservoir end, the first distal arm and the second distal arm of the liquid transport element and the heater terminals are at least partially received in the cavity, the first liquid transport element end and the second liquid transport element end are proximate the first reservoir end, and the first reservoir end of the reservoir substrate is proximate the base. Inserting the atomizer through the cavity at operation 904 may further comprise inserting the first distal arm and the second distal arm of the liquid transport element in a plurality of grooves extending between the first reservoir end and the second reservoir end of the reservoir substrate at the cavity.
The method may further comprise providing an electronic control component and a control component terminal at operation 908, connecting the control component terminal to the base at operation 910, coupling the electronic control component to the control component terminal at operation 912, and inserting the electronic control component into the cavity of the reservoir substrate at operation 914. Connecting the control component terminal to the base at operation 910 and connecting the heater terminals to the base may comprise inserting the control component terminal and the heater terminals to a plurality of different heights within the base. Further, connecting the control component terminal to the base at operation 910 and coupling the electronic control component to the control component terminal at operation 912 may be conducted before connecting the heater terminals to the base. The method may further comprise inserting the atomizer through a retainer clip configured to retain the liquid transport element in contact with the heater terminals at operation 916. Additionally, the method may include providing an external shell and a mouthpiece at operation 918 and coupling the external shell to the base and coupling the mouthpiece to the external shell at operation 920.
In some embodiments the method described above and various other embodiments of methods for assembling a cartridge for a smoking article may be substantially automated. For example, an assembly line may employ a plurality of substations to automatically assemble the cartridge. A first substation may provide the base. A second substation may insert the control component terminal into the base. A third substation may insert the heater terminals into the base. A fourth substation may couple the electronic control component to the control component terminal. A fifth substation may attach the flow tube to the electronic control component and the heater terminals. A sixth substation may cut the heating element and the liquid transport element and laser weld the heating element to the heater terminals. A seventh substation may bend the distal arms of the liquid transport element into contact with the heater terminals. An eighth substation may electrically test the atomizer to determine whether it defines a desired resistance. A ninth substation may flow test the assembly to determine if it defines a desired pressure drop. A tenth substation may couple the reservoir substrate to the assembly and couple a sleeve around the reservoir substrate. An eleventh substation may couple the sleeve to the base, for example by crimping the sleeve thereon. A twelfth substation may flow test the assembly to determine if it defines a desired pressure drop. A thirteenth substation may couple a shipping plug to the base to protect the base during shipment.
Thereafter, the assembly created by the above-described substations may be transported to a second assembly line. The second assembly line may include a first substation that brings a mouthpiece into contact with the sleeve. A second substation may press the mouthpiece into the sleeve. A third substation may crimp the sleeve to retain the mouthpiece in place. A fourth substation may laser mark the sleeve and visually inspect the assembly. A fifth substation may wrap a label around the assembly and visually inspect the assembly to determine if the label is properly positioned. A sixth substation may insert a shipping plug into the mouthpiece. A seventh substation may off-load the completed assemblies and separate out rejects. However, it should be understood that the above-described operations may be performed in other manners by other combinations of substations, in other orders, and/or with a greater or smaller number of assembly lines.
In the various embodiments described above, the heating element is generally described as comprising a wire wound about a liquid transport element and defining a plurality of coils thereon. However, various other embodiments of heating elements may be employed. In this regard, various other embodiments of heating elements and methods and inputs for the production thereof are provided below.
By way of example,
In some embodiments the carrier 1002 and the heating elements 1008 may be integrally formed from a sheet of a material. The material defining the sheet may comprise a material configured to produce heat when an electrical current is applied thereto. For example, the material may comprise Kanthal (FeCrAl), Nichrome, Molybdenum disilicide (MoSi2), molybdenum silicide (MoSi), Molybdenum disilicide doped with Aluminum (Mo(Si,Al)2), or ceramic (e.g., a positive temperature coefficient ceramic). However, various other materials may be employed in other embodiments.
Various embodiments of operations may be performed to produce the input 1000. For example, the sheet of the material may be cut (e.g., die or laser cut), stamped, and/or various other operations may be performed thereon. Accordingly, the input 1000 may be produced in a relatively simple manner, which may be repeated on a large scale to produce a number of the inputs, or a continuous roll of the input.
As further illustrated in
In some embodiments the carrier 1002 may further comprise a plurality of connecting strips 1014 extending between the first side strip 1010a and the second side strip 1010b and separating the access windows 1004. For example, in the illustrated embodiment the connecting strips 1014 are configured perpendicularly to the side strips 1010. The connecting strips 1014 may provide the input 1000 with support and stability. As illustrated in
The heating element 1008 may comprise the first end 1016, the second end 1018, and a plurality of interconnected loops 1022 connected to the first end and the second end through a first connector section 1023a and a second connector section 1023b (collectively, “connector sections 1023”). The connector sections 1023 may couple the ends 1016, 1018 to the loops 1022. As illustrated in
As further illustrated in
As noted above, the input 1000 as a whole, including the heating elements 1008 may be formed from a single sheet of a material. In this regard, the first end 1016, the second end 1018, the connector sections 1023, and the interconnected loops 1022 may be integrally formed from the sheet of the material. As noted above, various embodiments of materials may be employed. For example, the sheet may comprise Kanthal (FeCrAl), Nichrome, Molybdenum disilicide (MoSi2), molybdenum silicide (MoSi), Molybdenum disilicide doped with Aluminum (Mo(Si,Al)2), and ceramic (e.g., a positive temperature coefficient ceramic). In this regard, the material may be configured to produce heat when electrical current is applied therethrough. Further, in some embodiments the material may be configured to bend, as described below. In some embodiments the material of the sheet may be a metal material.
In some embodiments the first end 1016 and the second end 1018 of the heating element 1008 may define a width 1028 that is greater than a width 1030 of the material defining the interconnected loops 1022 and the connector sections 1023. Providing the first end 1016 and the second end 1018 of the heating elements 1008 with a greater width 1028 than the width 1030 of the material defining the interconnected loops 1022 and the connecting sections 1023 may provide the first end and the second end with a relatively larger surface area that may facilitate connection of the heating elements to heater terminals. For example, welding and/or other methods of coupling the heating elements 1008 to the heater terminals may be employed, as described elsewhere herein.
The heating elements 1008 may be at least partially bent around a liquid transport element in order to form an atomizer. In some embodiments the heating elements 1008 may be pre-bent prior to coupling to a liquid transport element such that they me received partially about the liquid transport element prior to completion of bending thereabout. In this regard,
Regardless of whether the interconnected loops 1022 are pre-bent to the intermediate configuration, the interconnected loops may ultimately be wrapped at least partially around a liquid transport element. By way of example,
As illustrated in
A second embodiment of an input 1100 for production of a plurality of atomizers is illustrated in
In this regard, as illustrated in
The carrier 1102 may further comprise a plurality of connecting strips 1114 extending between the first side strip 1110a and the second side strip 1110b (e.g., perpendicularly thereto) and separating the access windows 1104. In the embodiment of the input 1000 described above and illustrated in
Further, a plurality of longitudinal axes 1120 of the heating elements 1108 may be perpendicular to the longitudinal axis 1106 of the carrier 1102. Each of the longitudinal axes 1120 of the heating elements 1108 may be parallel with one another in some embodiments. A plurality of interconnected loops 1122 may be respectively connected to the first end 1116 and the second end 1118 by a first connector section 1123a and a second connector section 1123b (collectively, “connector sections 1123”). The interconnected loops 1122 may be oriented transversely to the longitudinal axes 1120 of the heating elements 1108 and the connector sections 1123 and alternatingly disposed with respect thereto.
A first portion 1134 of the input 1100 is illustrated with the interconnected loops 1122 of the heating elements 1108 in an unbent, planar configuration. In contrast, a second portion 1136 of the input 1100 is illustrated with the interconnected loops 1122 in a pre-bent configuration. As described above, the input 1100 may be provided in either the planar or pre-bent configurations prior to being wrapped about a liquid transport element.
A liquid transport element 1226 may also be provided. In some embodiments the liquid transport element 1226 may be at least partially engaged with the heater terminals 1206 prior to coupling the heating element 1108 thereto. In this regard,
The cartridge subassembly 1200″ may then be moved into proximity with the input 1100. More particularly, one of the heating elements 1108 may be brought into proximity with the center section 1240c of the liquid transport element 1226. Thereby, the interconnected loops 1122 of the heating element 1108 may be at least partially wrapped around the liquid transport element 1226. For example, a pair of actuators may extend into one of the access windows 1104 and compress the interconnected loops 1122 against the liquid transport element 1226. In some embodiments the actuators may define a profile configured to match a profile of the liquid transport element 1226. For example, the actuators may define actuating surfaces configured to engage the heating element 1108 that define a radius substantially equal to a radius of the liquid transport element 1226. However, the liquid transport may define cross-sectional shapes other than rounded in other embodiments, and the actuators configured to bend the heating element may be appropriately configured to match the particular cross-sectional shape. During the bending operation of the heating element 1108 about the liquid transport element 1226, the ends 1116, 1118 of the heating element may remain connected to the carrier 1102. Accordingly, the heating element 1108 may be supported by the carrier 1102 during the bending operation such that issues with respect to retaining the heating element in the proper position may be averted.
Thereafter, the ends 1116, 1118 of the heating element 1108 may be decoupled from the carrier 1102 and the ends of the heating element may be connected to the heater terminals 1230 to form an atomizer 1208, as illustrated at cartridge subassembly 1200′″. Additional cartridge subassemblies 1200′″ with atomizers 1208 may be produced by repeating the procedures noted above and incrementing the position of the input 1100 such that the next heating element 1108 may be provided in an appropriate position. For example, in the embodiment illustrated in
Accordingly, use of the above-described embodiments of heating elements formed from a sheet of a material may be beneficial in that it may eliminate the need to conduct winding operations in which a wire is wound about a liquid transport element. In this regard, winding a wire about a liquid transport element to form a heating element may require a relatively high degree of precision. Further, handling of the wire, which may define a relatively small diameter, may be difficult. In contrast, the formation of heating elements from a sheet of material may only involve relatively simple cutting operations, which may allow for repeatable mass production thereof. Further, the attachment of the heating elements to the liquid transport element may be simplified by employing the carrier to hold the heating elements. Thus, the heating elements may be easily transported to a desired position by moving the carrier. Further, the carrier may support the heating element during attachment to the liquid transport element. Accordingly, use of heating elements formed from a sheet of a material may simplify production of cartridges for a smoking article.
A method of forming a plurality of atomizers is also provided. As illustrated in
In some embodiments the method may further comprise providing a liquid transport element at operation 1306. The method may additionally include bending the interconnected loops about the liquid transport element at operation 1308. A plurality of tips of the interconnected loops may be positioned adjacent one another and the interconnected loops may define a substantially cylindrical void extending parallel to the longitudinal axis of the carrier in which the liquid transport element is received in some embodiments. The method may additionally include decoupling the heating elements from the carrier at operation 1310 and connecting a first end and a second end of each of the heating elements to a plurality of heater terminals at operation 1312.
In some embodiments of the method, forming the sheet of the material into the carrier at operation 1302 may comprise forming a first side strip and a second side strip extending parallel to the longitudinal axis. Further, forming the sheet of the material into the carrier at operation 1302 and forming the sheet of the material into the heating elements at operation 1304 may comprise retaining a plurality of connections between a first end and a second end of the heating elements and the first side strip and the second side strip. Additionally, forming the sheet of the material into the carrier at operation 1302 may comprise forming a plurality of apertures extending through at least one of the first side strip and the second side strip.
In some embodiments of the method, forming the sheet of the material into the carrier at operation 1302 may comprise forming a plurality of connecting strips extending between the first side strip and the second side strip and separating the access windows. Further, forming the sheet of the material into the carrier at operation 1302 and forming the sheet of the material into the heating elements at operation 1304 may comprise retaining a plurality of connections between a first end and a second end of each of the heating elements and the connecting strips. Additionally, forming the sheet of the material into the heating elements at operation 1304 may comprise forming a plurality of interconnected loops oriented transversely to a plurality of longitudinal axes of the heating elements. Forming the sheet of the material into the heating elements at operation 1304 may also comprise forming the heating elements such that the longitudinal axes thereof are coaxial with the longitudinal axis of the carrier. In another embodiment, forming the sheet of the material into the heating elements at operation 1304 may comprise forming the heating elements such that the longitudinal axes thereof are perpendicular to the longitudinal axis of the carrier.
In an additional aspect, a controller configured to execute computer code for performing the above-described operations is provided. The controller may comprise a processor that may be a microprocessor or a controller for controlling the overall operation thereof. In one embodiment the processor may be particularly configured to perform the functions described herein. The controller may also include a memory device. The memory device may include non-transitory and tangible memory that may be, for example, volatile and/or non-volatile memory. The memory device may be configured to store information, data, files, applications, instructions or the like. For example, the memory device could be configured to buffer input data for processing by the processor. Additionally or alternatively, the memory device may be configured to store instructions for execution by the processor.
The controller may also include a user interface that allows a user to interact therewith. For example, the user interface can take a variety of forms, such as a button, keypad, dial, touch screen, audio input interface, visual/image capture input interface, input in the form of sensor data, etc. Still further, the user interface may be configured to output information to the user through a display, speaker, or other output device. A communication interface may provide for transmitting and receiving data through, for example, a wired or wireless network such as a local area network (LAN), a metropolitan area network (MAN), and/or a wide area network (WAN), for example, the Internet.
The controller may also include atomizer forming module. The processor may be embodied as, include or otherwise control the atomizer forming module. The atomizer forming module may be configured for controlling or executing the atomizer forming operations described herein.
The various aspects, embodiments, implementations or features of the described embodiments can be used separately or in any combination. Various aspects of the described embodiments can be implemented by software, hardware or a combination of hardware and software. The described embodiments can also be embodied as computer readable code on a computer readable medium for controlling atomizer forming operations. In this regard, a computer readable storage medium, as used herein, refers to a non-transitory, physical storage medium (e.g., a volatile or non-volatile memory device, which can be read by a computer system. Examples of the computer readable medium include read-only memory, random-access memory, CD-ROMs, DVDs, magnetic tape, and optical data storage devices. The computer readable medium can also be distributed over network-coupled computer systems so that the computer readable code is stored and executed in a distributed fashion.
Thus, an embodiment of a non-transitory computer readable medium for storing computer instructions executed by a processor in a controller for an apparatus configured to form atomizers is provided. The non-transitory computer readable medium may comprise computer code for providing a sheet of a material, computer code for forming the sheet of the material into a carrier defining a plurality of access windows spaced apart along a longitudinal axis of the carrier, and computer code for forming the sheet of the material into a plurality of heating elements that are coupled to the carrier and respectively received in the access windows.
In some embodiments the non-transitory computer readable medium may further comprise computer code for providing a liquid transport element and computer code for bending the interconnected loops about the liquid transport element such that a plurality of tips of the interconnected loops are positioned adjacent one another and the interconnected loops define a substantially cylindrical void extending parallel to the longitudinal axis of the carrier. The non-transitory computer readable medium may further comprise computer code for decoupling the heating elements from the carrier and computer code for connecting a first end and a second end of each of the heating elements to a plurality of heater terminals.
Additionally, in some embodiments the computer code for forming the sheet of the material into the carrier may comprise computer code for forming a first side strip and a second side strip extending parallel to the longitudinal axis. Computer code for forming the sheet of the material into the carrier and computer code for forming the sheet of the material into the heating elements may comprise computer code for retaining a plurality of connections between a first end and a second end of the heating elements and the first side strip and the second side strip. Computer code for forming the sheet of the material into the carrier may comprise computer code for forming a plurality of apertures extending through at least one of the first side strip and the second side strip. Computer code for forming the sheet of the material into the carrier may comprise computer code for forming a plurality of connecting strips extending between the first side strip and the second side strip and separating the access windows.
In some embodiments computer code for forming the sheet of the material into the carrier and computer code for forming the sheet of the material into the heating elements may comprise computer code for retaining a plurality of connections between a first end and a second end of each of the heating elements and the connecting strips. Computer code for forming the sheet of the material into the heating elements may comprise computer code for forming a plurality of interconnected loops oriented transversely to a plurality of longitudinal axes of the heating elements. Computer code for forming the sheet of the material into the heating elements may comprise computer code for forming the heating elements such that the longitudinal axes thereof are coaxial with the longitudinal axis of the carrier. Computer code for forming the sheet of the material into the heating elements may comprise computer code for forming the heating elements such that the longitudinal axes thereof are perpendicular to the longitudinal axis of the carrier.
Many modifications and other embodiments of the disclosure will come to mind to one skilled in the art to which this disclosure pertains having the benefit of the teachings presented in the foregoing descriptions and the associated drawings. Therefore, it is to be understood that the disclosure is not to be limited to the specific embodiments disclosed herein and that modifications and other embodiments are intended to be included within the scope of the appended claims. Although specific terms are employed herein, they are used in a generic and descriptive sense only and not for purposes of limitation.
This application is a continuation of U.S. application Ser. No. 16/020,677, filed Jun. 27, 2018, which is a continuation of U.S. application Ser. No. 14/944,434, filed Nov. 18, 2015, and which issued as U.S. Pat. No. 10,143,236 on Dec. 4, 2018, and which is a continuation of U.S. application Ser. No. 13/841,233, filed Mar. 15, 2013, and which issued as U.S. Pat. No. 9,220,302 on Dec. 29, 2015, each of which applications is hereby incorporated by reference in its entirety in this application.
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Number | Date | Country | |
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20190364976 A1 | Dec 2019 | US |
Number | Date | Country | |
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Parent | 16020677 | Jun 2018 | US |
Child | 16545988 | US | |
Parent | 14944434 | Nov 2015 | US |
Child | 16020677 | US | |
Parent | 13841233 | Mar 2013 | US |
Child | 14944434 | US |