News Column

"Heating Smokable Material" in Patent Application Approval Process

July 26, 2014



By a News Reporter-Staff News Editor at Investment Weekly News -- A patent application by the inventors Egoyants, Petr Alexandrovich (St. Petersburg, RU); Volobuev, Dmitry Mikhailovich (St. Petersburg, RU); Fimin, Pavel Nikolaevich (St. Peterburg, RU); Abramov, Oleg Jurievich (St. Petersburg, RU); Saleem, Fozia (London, GB); Woodman, Thomas (London, GB), filed on August 24, 2012, was made available online on July 10, 2014, according to news reporting originating from Washington, D.C., by VerticalNews correspondents.

This patent application is assigned to British American Tobacco (investments) Limited.

The following quote was obtained by the news editors from the background information supplied by the inventors: "Smoking articles such as cigarettes and cigars burn tobacco during use to create tobacco smoke. Attempts have been made to provide alternatives to these smoking articles by creating products which release compounds without creating tobacco smoke. Examples of such products are so-called heat-not-burn products which release compounds by heating, but not burning, tobacco."

In addition to the background information obtained for this patent application, VerticalNews journalists also obtained the inventors' summary information for this patent application: "According to the invention, there is provided an apparatus comprising a heating chamber configured to heat smokable material in the chamber, the apparatus being operable in a first configuration to allow a gaseous flow between an interior of the chamber and an exterior of the chamber and operable in a second configuration to prevent the gaseous flow by hermetically sealing the chamber.

"The apparatus may comprise a heater configured to heat the smokable material inside the chamber to volatilize at least one component of the smokable material.

"In the first configuration the at least one volatized smoke component may be allowed to flow out of the heating chamber for inhalation and in the second configuration the at least one volatized smoke component may be sealed inside the heating chamber.

"The apparatus may be configured to operate in the first configuration in response to an indication of a puff at a mouthpiece of the apparatus and may be configured to operate in the second configuration in response to an indication that the puff has ended.

"The heating chamber may comprise an inlet which is open in the first configuration and hermetically sealed in the second configuration, the first configuration allowing gaseous flow through the inlet and the second configuration preventing gaseous flow through the inlet.

"The inlet may be configured to open in response to a force exerted on the inlet due to a gaseous flow caused by a user puffing at a mouthpiece.

"The inlet may be configured to hermetically seal in response to a lack of said force.

"The inlet may be configured to open in response to a signal from a puff sensor indicative of a puff and may be configured to hermetically seal in response to an end of the puff.

"The inlet may comprise a one-way valve configured to allow a gaseous flow into the heating chamber in the first configuration and to prevent a gaseous flow out of the heating chamber in the second configuration.

"The inlet may be provided in insulation, such as vacuum insulation, which is configured to thermally insulate the heating chamber.

"The apparatus may comprise an outlet which is open in the first configuration and hermetically sealed in the second configuration, the first configuration allowing gaseous flow through the outlet and the second configuration preventing gaseous flow through the outlet.

"The outlet may be configured to open in response to a force exerted on the outlet due to a gaseous flow caused by a user puffing at a mouthpiece.

"The outlet may be configured to hermetically seal in response to a lack of said force.

"The outlet may be configured to open in response to a signal from a puff sensor indicative of a puff and to hermetically seal in response to an end of the puff.

"The outlet may comprise a one-way valve configured to allow a gaseous flow out of the heating chamber in the first configuration and to prevent a gaseous flow into the heating chamber in the second configuration.

"The outlet may be provided in insulation, such as vacuum insulation, which is configured to thermally insulate the heating chamber.

"The apparatus may be configured to heat the smokable material without combusting the smokable material.

"According to the invention, there is also provided a method for heating smokable material in a heating chamber, comprising: operating in a first configuration of the chamber to allow a gaseous flow between an interior of the chamber and an exterior of the chamber; and operating in a second configuration of the chamber to prevent the gaseous flow by hermetically sealing the chamber.

"According to an aspect of the invention, there is provided an apparatus configured to heat smokable material to volatilize at least one component of the smokable material, comprising an infra-red heater.

"The infra-red heater may comprise a halogen infra-red heater.

"For exemplary purposes only, embodiments of the invention are described below with reference to the accompanying figures in which:

BRIEF DESCRIPTION OF THE FIGURES

"FIG. 1 is a perspective, partially cut-away illustration of an apparatus configured to heat smokable material to release aromatic compounds and/or nicotine from the smokable material;

"FIG. 2 is a perspective, partially cut-away illustration of an apparatus configured to heat smokable material, in which the smokable material is provided around an elongate ceramic heater divided into radial heating sections;

"FIG. 3 is an exploded, partially cut-away view of an apparatus configured to heat smokable material, in which the smokable material is provided around an elongate ceramic heater divided into radial heating sections;

"FIG. 4 is a perspective, partially cut-away illustration of an apparatus configured to heat smokable material, in which the smokable material is provided around an elongate infra-red heater;

"FIG. 5 is an exploded, partially cut-away illustration of an apparatus configured to heat smokable material, in which the smokable material is provided around an elongate infra-red heater;

"FIG. 6 is a schematic illustration of part of an apparatus configured to heat smokable material, in which the smokable material is provided around a plurality of longitudinal, elongate heating sections spaced around a central longitudinal axis;

"FIG. 7 is a perspective illustration of part of an apparatus configured to heat smokable material, in which the regions of smokable material are provided between pairs of upstanding heating plates;

"FIG. 8 is a perspective illustration of the apparatus shown in FIG. 7, in which an external housing is additionally illustrated;

"FIG. 9 is an exploded view of part of an apparatus configured to heat smokable material, in which the regions of smokable material are provided between pairs of upstanding heating plates;

"FIG. 10 is a flow diagram showing a method of activating heating regions and opening and closing heating chamber valves during puffing;

"FIG. 11 is a schematic illustration of a gaseous flow through an apparatus configured to heat smokable material;

"FIG. 12 is a graphical illustration of a heating pattern which can be used to heat smokable material using a heater;

"FIG. 13 is a schematic illustration of a smokable material compressor configured to compress smokable material during heating;

"FIG. 14 is a schematic illustration of a smokable material expander configured to expand smokable material during puffing;

"FIG. 15 is a flow diagram showing a method of compressing smokable material during heating and expanding the smokable material for puffing;

"FIG. 16 is a schematic, cross-sectional illustration of a section of vacuum insulation configured to insulate heated smokable material from heat loss;

"FIG. 17 is another schematic, cross-sectional illustration of a section of vacuum insulation configured to insulate heated smokable material from heat loss;

"FIG. 18 is a schematic, cross-sectional illustration of a heat resistive thermal bridge which follows an indirect path from a higher temperature insulation wall to a lower temperature insulation wall;

"FIG. 19 is a schematic, cross-sectional illustration of a heat shield and a heat-transparent window which are moveable relative to a body of smokable material to selectively allow thermal energy to be transmitted to different sections of the smokable material through the window; and

"FIG. 20 is schematic, cross sectional illustration of part of an apparatus configured to heat smokable material, in which a heating chamber is hermetically sealable by check valves."

URL and more information on this patent application, see: Egoyants, Petr Alexandrovich; Volobuev, Dmitry Mikhailovich; Fimin, Pavel Nikolaevich; Abramov, Oleg Jurievich; Saleem, Fozia; Woodman, Thomas. Heating Smokable Material. Filed August 24, 2012 and posted July 10, 2014. Patent URL: http://appft.uspto.gov/netacgi/nph-Parser?Sect1=PTO2&Sect2=HITOFF&u=%2Fnetahtml%2FPTO%2Fsearch-adv.html&r=7314&p=147&f=G&l=50&d=PG01&S1=20140703.PD.&OS=PD/20140703&RS=PD/20140703

Keywords for this news article include: Investment and Finance, British American Tobacco (investments) Limited.

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Source: Investment Weekly News


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